No Comments

New Revolutionary Door Technology by Sing Core

We offer our services to support door manufacturers in building stronger, lightweight, high precision and warp-free (AWI warp standard) insulated doors using our patented and patent pending Sing Door Blanks and Sing Stile and Rail frames.

Sing Core’s specialty is assisting to create incredibly large and extremely wide door panels which door manufacturers can utilize to build the most challenging high-end doors.

Large Quantity Production Runs

We can also assist in the high-quantity production runs for doors using our facility to pre-build base doors which might otherwise create a bottleneck for common door manufacturers. We love taking over the assembly line bulk of your large door orders with rapid turnaround times.

You choose your method of building your Sing Core door blanks:

1. Sing Door Core Panel

You specify the length, the width, and thickness of your Sing door blank, built to your specifications. You determine the insulation value and skin material, and we do the rest. The Sing door core panel method is the strongest and best Eco-friendly insulated door solution for any sized door, even large oversized wooden doors, available in almost any style.

Click Thumbnail to View Photos

2. Stile and Rail Door Frame

For our customers and their clients who prefer the standard design of stile and rail doors, we provide the manufacture of a stile and rail formatted frame made of any combination of Sing panel, post and beam configurations to create the most sustainable stile and rail doors, which are finished by only the best millworks and custom door manufacturers. Sing Core provides the most significant improvement to stile and rail technology (besides automation) in the last 100 years to create the strongest, lightweight, most high-precision, and warp-free performance in the history of the door industry.

Doors of Almost Any Style Could be Made with Sing Core Inside

1. Pivot Doors

Pivot doors are the highest and best use of Sing Core because for the most part, pivot doors are quite large in size and are often much thicker than a standard door. If your intention is to feature a real wood finish, you know you’re going to be in trouble, that’s when the warp-free attributes of patented Sing Core shines through as the only way to build a large wood door which can be guaranteed to offer warp-free performance over time: 50 years, guaranteed, on professional grade doors.

2. Sliding Doors / Pocket Doors

Sliding Doors often present problems when they are very large due to their sensitivity and tendency to move, bend, or cup in response to changes in the environment, for which Sing Core is the perfect solution.

Large bypass sliding doors are likely to deface, scar, or otherwise damage themselves if they are not kept straight and true by being built with Sing Core inside in advance of bypass door failure.

Pocket doors, which are the most problematic of all sliding doors, because they hide within a cavity are highly benefited from being built with Sing Core inside. If warped, the finish of the door may be compromised as it brushes against the frame or cavity’s interior, and if it cups or bends too far, may become lodged either inside or outside of the pocket unable to open and close as a door. Sing Core keeps them straight and true.

3. Hinged Doors

Hinged doors are for the most part manageable even when facing a certain degree of warp, which is normal in normal sized doors. Problems arise when doors are very large, especially if over 7 ft. tall or 3.5 ft. wide. Any movement or change in the door’s being compromised is increased exponentially in relation to the dimensions of the door. Not a problem with Sing Core’s professional door blanks.

Diverse types of hinged doors, such as French doors, sliding folding doors, front entry doors, and carriage doors (among other types of hinged doors), all present varying challenges when migrating from the drawing board to the real world, and Sing Core makes the difference.

Door Sizes

While Eco-friendly insulated Sing door blanks could be used in doors of any size, the efficacy is maximized in door performance in any door over 7 ft. tall and 3.5 ft. wide. This is why you find Sing Core inside the largest doors in high-end homes, businesses, and industrial sites, because it’s the only way to build a large door which can remain straight and true, regardless of the size of the door, while still remaining lightweight.

Door Shapes

Since every door slab manufactured by Sing Core is likened unto a one-of-a-kind piece of art, architects and designers are free to create a door of any size and shape using any available flat building material.

Sing door slabs can be created to accommodate any shaped design in any thickness, and so it goes for any shaped light cutout for glass openings.

Skin Options

Sing door slabs are available in almost any skin you want, limited only by flatness (surface material must be flat), ability to be laminated, and availability.

Some examples include, paint grade plywood, aluminum, brass, cement board, cold rolled steel, concrete, diamond plate steel, fiberglass, FRP, galvanized steel, glass, hot rolled steel, LVL, Masonite, stainless steel, any wood species including exotic species, and many more.

Our most common specialty includes the cold pressing of solid wood stave to our patented and patent pending core material, resulting in natural wood doors that can be guaranteed to remain warp-free for 50 years. Unheard of in the wood working industries. We also supply high end millworks with hot-press-ready warp-free substrates to apply their skins to.

Light Openings

Available in any size and any shape, based on your drawing(s).

STC-rated Sound Doors

We assist in the creation of sound reducing or sound proof doors which can be STC-rated at our local world-renowned pro sound testing lab. Some typical composite configurations include combinations of steel, sheetrock, MDF, and other materials to achieve the sound proof results to meet your specifications.

Fire Proof Doors

We build fire proof doors to your specs and can have them rated at the fire-rating facilities selected by our fire proof door clients.

And that’s just scratching the surface…

Imagine all the possibilities… Click Here for More

Don’t Get Stuck with a Fake Sing Door

Does Your Door Have Sing Core Inside?

If your door has Sing Core inside it can come with a full 50-year warp-free guarantee. No other door can be guaranteed like that, unless it has Sing Core inside.

It is rare, but there have been occasions when a door has warped, when someone thought it had Sing Core inside, but it did not.

For instance, last year, an architect in Florida specified a large wooden door with Sing Core inside. The contractor contacted Sing Core and received an initial price quote.

Nine months later, we received a call from the architect who had been contacted by the building department that reported that a large wooden door with Sing Core inside had warped.

We searched our records and could not find any record of the job. We did discover the initial price quote request from the contractor who must have found a different way to make the large door.

Your large door with Sing Core inside comes with a certificate of authenticity and guarantee.

Be forewarned, if your large wooden door doesn’t have Sing Core inside, you can expect it to warp.

Make sure your large doors have Sing Core inside.

Daniel Sing Core No Comments

How to Join Sing Doors

Gorilla polyurethane glue is an effective glue for joining Sing panels. We recommend consulting the glue manufacturer website for instructions on use of the adhesive. For Gorilla Glue, look here.

Failure to follow the joining instructions or the manufacturer adhesive instructions could void the
warranty on your panels.

Before you begin

Attention: Please read all instructions before starting to assemble your panel
Follow the acclimatization instructions before joining panels

1. Lay Your Door Panels Flat

It is crucial that all of your panels are resting on a flat surface and are completely level. If you attempt
to glue the panels together against a wall, or any way other than flat, you will end up with a crooked
joint and “warped” door.

The first step to join a Sing Core sectional door is to lay the panels on a flat surface.

For very large door panel assembly please place straight guide beams on top of sawhorses so the
bottom of the panel can be accessible.

Assemble on a Flat Work Surface

To ensure best results, it is critical that you assemble your panels on a flat surface. If you do not
have a work surface large enough, the best way is to build your own.

The best way to level your work surface is to lay guide beams end to end, then use shims to level
each beam. It is important to lay your beams perpendicular to the joints on your panel.

Uneven Floor Surface

For wider panels you will need more rows of beams to distribute the weight more evenly and to ensure flatness of the joined panel. Make sure to level each additional row of beams with your initial row that you have already leveled. Once your work surface is level, you are ready to join your panels.

 

2. Glue and insert Your Biscuits or Spline into the Edge of One Panel

Each biscuit and slot are precisely cut to join with the greatest strength. After applying the glue to the slot and biscuit, do not use an excessive amount of glue. If the air is very dry a light misting of water can help the bond and cure time of the glue. Carefully push or hammer each biscuit lightly in place into the edge of one panel. Tap in with a rubber mallet.

 

3. Joining the Panels

The final step in joining your panels is to press the sides together. This can be accomplished a variety of ways, including gentle application of a sledgehammer, a few ratchet straps, clamps, or any other means you have of providing joining force.

 

4. How to Clamp at the Join

When you want perfect alignment for very high tolerance applications, it’s best to sandwich each joint with a straight guide temporarily during the gluing process. Polyurethane Glue expands during the cure process. You will be ensuring the glue does not expand and bow the joints.

You will need:

Flat boards to clamp or screw to (depending upon the size of your panels); Clamps or screws to create pressure on the joint while the glue cures; and a flat surface. If your panels are so large that you need to use rows of screws to clamp the joints you will need to putty the holes before finishing.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

—Old Instructions—

 

When your beautiful new Sing Core door sections arrive, it is important to take the time to glue the door together properly using polyurethane adhesive. Although Sing Core panels are guaranteed warp-free, we cannot guarantee work done on site. Failure to properly follow these directions may result in a poor final product.

Sing Splines Don’t Crack

Sing Core uses our patented core material as a spine to join several panels on site. Unlike solid wood, the stability of the core material means that there is no danger of cracking or splitting of the seam at the join location.  When Sing Core fabricates your door as a single panel it is almost seamless.  When a door is splined, it is not as high precision as a single panel due to the tolerance of glue, which is roughly 0.01-0.02 inches.

Join on Site in Three Steps

1. Lay Your Door Panels Flat

It is crucial that all of your panels are resting on a flat surface and are completely level.  If you attempt to glue the panels together against a wall, or any way other than flat, you will end up with a crooked joint and a “warped” door.

The first step to join a Sing Core sectional door is to lay the panels on a flat surface. Any flat clean surface will work. For very large doors we like to use two straight beams laid on the ground along to hold the top and bottom of each door segment.

2. Insert Your Biscuits or Spline into the Edge of One Panel

Each biscuit and slot are precisely cut to join with the greatest strength. Carefully, push or hammer each biscuit lightly in place into the edge of one panel. Then your panels are ready for joining.

3. Joining the Panels

The final step in joining a modern sliding or pivot door is to press the sides together. This can be accomplished a variety of ways, including gentle application of a sledgehammer, a few ratchet straps, clamps, or any other means you have of providing joining force. Once joined, the door is strong and secure, built to last, and can be finished and installed as any other Sing Core door.

 

 

Joining Large Sliding Pocket and Pivot Doors

Joining Large Sliding Pocket and Pivot Doors-Animated

Joining in Action

How to Clamp at the Join

When you want perfect alignment for very high tolerance applications, it’s best to sandwich each joint with a straight guide temporarily during the gluing process.

In order to make your process easier, Sing Core offers construct custom true straight guides for your application and ship them with your order. These guides are made with the same high precision core material as our other products and offer superior ease and performance.

Specify you would like clamping guides when you place your order and we will gladly include them for you.

No Comments

Cracks in Wood Stave Doors

Here, at Sing Core, we get calls all the time about problems associated with wood stave doors, especially if they are large, oversized wood stave doors. These problems, such as bending, twisting, cupping, and warping should be celebrated as wood’s natural tendency to adapt to it’s environment. Unlike other synthetic materials, wood stave is sourced from a previously live authentic tree unique unto itself, a valuable resource in the eco structure of our planet.

A tree is a living, breathing part of our environment, made of the same atomic stuff we are, a sort of shirt-tailed cousin, which survives consciously for years by continuously adapting to its environment.

Even following the harvesting of a tree’s wood, the wood’s independent slices fight for their right to continue to acclimate and survive, expressing their individuality and uniqueness.

That’s why designers, architects, and pretty much the rest of us love the look and feel of real wood. We appreciate the look of it, the design of the individual expression of the tree’s growth rings, and it makes you have a comfortable sense of being home in a virtual hug from Mother Nature.

When wood stave (natural slices of wood) is applied to a door core material, the wood will move to accommodate the environmental challenges and circumstances which it is presented with.
In the case of cracking wood stave doors, the surface crack is the nature of the wood to adjust to the tension of the door’s core. The wood is still trying to provide you with the best door ever, so it sacrifices the surface finish and moves to accommodate the needs of interior core of the door. A crack-resistant finish will result in the tension being spread over a larger surface area, developing a warped or cupped door which can be more problematic to deal with than a surface crack.

Natural wood stave doors will move, warp, bend, twist, and crack, unless they are uniquely engineered with the proper composite materials to result in a wood door that does not move.

Sing Core provides architects, custom door manufacturers, and millworks with the best structurally sound composite door core which is lightweight, insulated, dimensionally stable, and stronger than steel pound-for-pound. Properly laminated materials, including the application of the natural wood stave to the patented torsion box composite core in concert with patent pending straighteners, delivers to clients a natural wood stave door which can be guaranteed to remain warp-free, including a full structure warranty, for an unprecedented 50 years.

A cracked natural wood surface door is likely due to a moisture problem, which varies in intensity between interior wooden doors and exterior wooden doors. Any wood door needs to be properly acclimatized to avoid cracking and excessive movement, also contributing to a wood’s tendency to move would be considering the way in which the wood was sliced, cut, or sawn.

Wood stave is a much higher concept in wood-faced doors than wood veneer as wood veneer which is not susceptible to cracking or warping, it is very thin and cannot easily be repaired when slightly damaged. Wood stave is a thicker natural wood product which can easily be maintained using basic woodworking skills.

No Comments

How to Measure a Warped Door

How can you tell if you have a warped door or not?

There is an industry standard method of determining whether your door is warped or not.

To determine whether you have a warped door or not you will need a length of string (longer than the length or height of your door) and a measuring stick or tape measure.

a) Tape one end of the string to the edge of the door and the other end to the opposite edge of the door.

The string should be straight. If there is a gap between the string and the door’s surface, you may have a warped door.

b) Measure the gap between the string and the door’s surface area.

If the gap is greater than ¼” your door is warped (according to AWI standards for 1-3/8 to 1-3/4 inch doors 3’-0” to 3′-6″ x 7’-0”).

c) If the length exceeds 7 ft. AWI standard applies to any 7 ft. section. Apply string to any 7 ft. span.

Contact your door maintenance company and send them two photos.

d) [1] Photo of the length of the string which shows as much of the door in its entirety, or at least from one end of the string to the other. Then [2] a closeup photo of your measurement of the gap.

Armed with these two photographs, which can easily be emailed to the millwork or door maintenance company of your choice, the recipients will be able to determine how best to approach the repair or replacement of your warped door.

You might consider replacing your warped door with a professional door which has Sing Core inside which can be guaranteed not to warp, bend twist or otherwise fail so as to avoid this pitfall in the future.

For more information, see: Door Warping vs. True Flat

Storing SingCore Doors

After you’ve received your patented Sing products, if you will have to store them prior to finishing and/or installation, try to store them standing upright, on edge, with plenty of space in between, to allow air flow. Do not lean them against a wall. If you must store them stacked, wrap in plastic and place one or two sheets of plywood underneath and on top of the stack of Sing products. This will help keep the entire stack similarly acclimatized while not in use, otherwise, you may have to re acclimatize the top and/or bottom Sing products later, when you are ready to use them.

 

How to Store SingCore Doors

What if my door with Sing Core inside is warped?

The same standard method of determining and measuring any door with Sing Core inside is used just like any other door (as noted above).

Contact Sing Core about your concerns about your door being certain to include the two photos as noted above.

If you have purchased a professional door with Sing Core inside, you may be the recipient of a replacement Sing door.

Note that upon arrival and un-crating of a door with Sing Core inside, a door may appear warped (and indeed it will be measurable). This is normal for a door which has been packed and in transit. Stand your door on its edge at least twelve inches away from any adjoining surface area, allowing it to acclimatize for up to 72 hours. Measure your door again and you will find it to be straight and true. If not, document for warp (as above) and contact Sing Core.

In the event that a professional door with Sing Core inside is warped (which is highly unlikely) your help in determining the cause of the door’s warping is appreciated. Please assist documenting the chain of custody of your professional door with Sing Core inside, including the millwork or door company which finished the door, and the installers who installed the door, to help us insure your replacement door remains warp-free.

No Comments

Standard 3-0 x 7-0 Door Specs

General Specifications

Standard Sing Core 3 0 7 0 doors are manufactured with patented Sing Core material as the base interior substrate of the door. The Sing Core substrate material is created using a vertical grain natural wood torsion box design while the traditionally empty voids are filled wall to wall with recycled foam. The standard foam material is recycled rigid EPS foam. A 10-inch natural wood lock block is positioned centered at 37 inches for door knob and locking mechanism placement on both sides of the door. The core material is wood framed by 2-inch natural wood for finishing strength and attaching hardware. The torsion box is completed by adhering an exterior surface material (skin) in your choice of paint grade (Birch ply), wood veneer(s), or natural wood stave. Bonding agent used in adhesion of the entire composite material is formaldehyde-free.

Standard Sing Core 3 0 7 0 Doors include frame perfectly suited for the door of your choice and ready to hang. Specify either 2×4 or 2×6 wall thickness to determine frame size for door installation (not supplied by Sing Core).

Every Sing Core manufactured door is finished to specifications and guaranteed for 5 years for structural integrity.

Detailed Specifications:

Scope: Subject to local building codes, the standard Sing Core door is intended for use in:

  • Single family dwelling interior applications
  • Multifamily dwelling, low-rise professional office, library and low-rise motel interior applications
  • Lighter use industrial building and factory, hotel and retail sales building interior applications

Product Description: Standard 3 0 7 0 door panel manufactured by Sing Core available in 1 3/8” or 1 3/4″ thickness is designed for side-hinges (not supplied).

  • Door component includes paint-grade door panel, wood veneer, or wood stave for 2×4 or 2×6 wall installation

Door Panel Materials: Sing Core standard 3 0 7 0 doors are manufactured using Eco-friendly cold-press process. Composite materials include:

  • Sing Core vertical wood-grain torsion substrate filled with recycled EPS foam
  • Core material is framed with 2-inch wood stiles and rails
  • Facings are your choice of paint grade (Birch ply), wood veneer, or natural wood stave
  • Formaldehyde-free bonding agent is used for adhesion of all components

Interior Door: Features R 3.5 per in. insulation, available in 1 3/8″ or 1 3/4″ door thickness.

Exterior Door: Features R 6.5 per in. insulation, available in 1 3/4″ door thickness only

Interior Blocking: Solid wood implant is inserted for door knob and/lock block hard points on both sides of door.

Delivery: Reasonable care is taken to ensure safe transportation of your Sing Core 3 0 7 0 door from factory to door shop for finishing and pick-up or deliver to your location.

Storage and Protection: Store your Sing Core standard 3 0 7 0 door in an upright position and allow to acclimate to room temperature following shipment receipt or prior to finishing or installation.

Preparation: Per manufacturer’s specifications, ensure that door frame openings are constructed plumb, true and level prior to installation. Select fasteners of adequate type, number and quality to assure proper function.

Installation: Installer shall be specialized in the installation of the type of work that is associated with the project and will comply with manufacturer’s installation policies and procedures to ensure proper end use.

  • Verify that hinging and latching assemblies operate freely and correctly

Finishing: The standard finishing and sealing of the Sing Core standard 3 0 7 0 door includes paint grade (Birch ply), wood veneer, or unfinished natural wood stave. Additional finishing options include your specifications at additional charge.

Machining: Sing Core standard 3 0 7 0 doors are easy to work with in the millwork shop for CNC machining or on-site for finishing, sawing, sanding, cutting and fastening. No specialized skills or equipment is necessary, other than standard woodworking tools are necessary. Treat Sing Core doors just like you would any other standard wooden door blank.

Strength Performance: Patented Sing Core has an unsurpassed strength as compared to other lightweight substrate materials tested at 660 PSI (based on 2″ x 2″ grids and 3/4″ thick) for superior structural integrity and is resistant to warp, twist and crack when compared to other materials.

Light Weight Performance: Sing Core weighs much less than other traditional building materials, as much as 50% less; or more, as little as 4 lbs. per sq. ft. yet sustainable and true green technology.

Insulation Performance: Standard Sing Core 3 0 7 0 doors feature built-in insulation value with an R3 rating per inch.

Acoustical Performance: Sing Core standard 3 0 7 0 doors have a natural sound-deadening quality for noise control. Standard sound transmission class (STC) is 30.

Eco-friendly: Sing Core is manufactured using natural wood fibers, no formaldehyde, or toxic chemicals, is created using less energy than any other core material with little or no waste. The structure of Sing Core is 100% renewable (nature-grown) clean fiber and/or recycled material.

Warranty: Sing Core manufactured doors are structurally guaranteed for 10 years under normal conditions.

 

Basic Sing Door Spec Drawings: Click here

See also: Door Technical Information

Appearing regularly in Contemporary Architecture Design

* Note: STC rating varies according to size, thickness, skin, and other factors. Sing Core does not rate doors, although we are fortunate enough to have one of the best sound testing labs in the world, here in the Pacific Northwest. If you require a specific STC rating, Sing Core can build a door to your architectural specifications and have the resulting door tested at our rating facility for an official rating.

 

Ian Sage No Comments

Door Finishes

There are many ways to build large doors with Sing Core inside, the only doors that can be,

Guaranteed Warp-free for 50 Years


When it comes to oversize doors, one door stands out above the rest for high-end applications; see comparison. Look for these features in your door for the most discriminating taste(s):

  • Available in any size
  • Lightweight
  • Strong (stronger than steel pound for pound)
  • Insulated
  • Sound-deadening
  • Guaranteed True Flat
  • Resistant to warp, twist, crack & rot
  • Standard 10-year warranty
  • Professional 50-year warp-free guarantee

For more detailed information on our doors, see our Architectural Specifications.

Though Sing Core Doors are available in nearly any wood species, our standard varieties include:

sing-maple sing-cherry sing-oak sing-vg-fir sing-walnut
MAPLE CHERRY OAK VG FIR WALNUT

Note: Door designs can be modified to meet your specifications and requirements an may include the application and bonding of any flat building material. Please feel free to inquire for more information.

1. Paint Grade Door

2. Wood Grain and Wood Stave Door

3. Hardwood Plywood Door

1 Paint Grade Door

Our most popular door blanks are paint grade, and can be made to your specs including surface materials of,

  • Birch ply (most common)
  • Wood plywood
  • MDO
  • HPL
  • Other material, as specified

 

2 Wood Grain and Wood Stave Door

Besides paint grade for the surface, we also provide solid wood stave laminate on both sides of the sliding door. Wood stave is easy to work with and will last. Your Sing wood stave door will be more high precision than solid wood door (less warping, and twist and crack) due to Sing Core’s extremely high tolerance (+/- .006 inch) and, rigidity and high strength (660+ PSI) and professional grade wood grain and wood stave doors are certified and guaranteed not to warp, bend, twist, or otherwise fail for 50 years.

Sing Core provides hot-press ready door blanks to door manufacturers who add wood veneer on both sides of Sing door blanks which are made of Luan skin or marine grade plywood sandwich with patented Sing Core in the middle, solid wood around 4 edges and wood block implants where needed for hardware.

oversize-panel-edge-glued-together-planks-5ftx10ft Sing-Hardwood-Panels-Variety

Note: Veneer has to be handled very carefully every step of the way during production (we prefer to let the millworks handle this delicate procedure) and it is easy to damage by users over the years (but wood stave can be easily sanded and repaired).

We offer a very good price for wood stave doors, the cost is not much more than wood veneer doors.

3 Hardwood Plywood Door

We could make door with hardwood plywood as an effective way to make super large doors that you can stain any color. Up to 4×8 doors have no seam, but by orienting the grain horizontally, you can achieve a nearly seamless presentation on really big doors or extraordinary size.

Available in any available wood species, most common are Sapele, Oak, and Maple ply.

Sing Hardwood ply door has excellent strength, yet is lightweight, features good insulation and better sound deadening qualities than solid wood plank doors.

 

variety-of-design-options-for-architectural-doors-illustration-sing-core

 

Applications -> Building Components -> Doors -> Door Finishes

 

 

 

Paint Grade Door

No Comments

Wooden Door

See: How to Build The Perfect 16 ft. Tall White Oak Door

Sing wooden doors make the best wooden doors in the United States and around the world. No other Eco-friendly lightweight wooden door core is stronger. Weighing in at a fraction of the weight of solid wood door core, patented Sing Core is stronger than steel pound for pound (660 PSI). This is the only way to make a large oversized wooden door that can be guaranteed not to warp, bend twist or otherwise fail for 50 years.

Wood Stave

AB-Plywood-Trimmed-Skin

American Plywood

Plywood-Panel-Mahogany-Hard Wood Beautiful Skin

Solid Veneer

 

Black Oak Doors

Cedar Doors

Sing Core Wooden Doors

Each professional Sing wooden door can be guaranteed to remain warp-free for 50 years, including a full structure warranty. This is why Sing Core wood doors are making such a huge impact on the door industry across the USA and abroad.

Any type or style of wood door can be made with Sing Core inside, such as exterior wooden doors, wooden barn doors, interior wood doors, wooden sliding patio doors, wood sliding room dividers, wooden French doors, wood stile and rail doors, just to name a few.

Patented Eco-friendly wooden doors with Sing Core inside are proudly made in the USA, using sustainable manufacturing methods using less energy, with responsible use of recycled and renewable resources, including natural wood fiber, producing little or no waste or loss of energy, leaving a negligible carbon footprint.

There is just no other way to make 20 ft. tall wooden doors that will not warp. Wood is a very difficult resource to use for anything over 7 ft. tall because of its tendency to move, especially in exterior wood doors. For instance a wood door that faces the elements on one side and the structure’s interior on the other is going to warp. That’s why no door company guarantees warp resistance of a wooden door for more than one year, that is, unless it has patented Sing Core inside.

So, how can you get wood doors with Sing Core inside? It’s easy, just go to your favorite architect, door manufacturer, mill work, or custom door company, and tell them what size door you want and be sure to ask for, “Sing Core inside.” We cannot sell or ship Sing Core doors directly to consumers or do it yourselfers, as we are the manufacturer supplying Sing Core door core only to door manufacturers and builders of custom doors.

Big Oak Doors

Here’s an example of a pair of 10 x 12 big oak doors, 3-inches thick. These are made using solid oak wood stave (or planks) trimmed thin at 1/8-inch and applied to patented Sing Core engineered substrate.

10×12 ft 3″ thick warp-free 1/8″ oak 520 lbs

The face staves or planks are expertly applied and nearly seamless. If done any other way, these face staves will separate or crack due to movement of the surface area, but because Sing Core does not move, this surface area will remain in pristine condition thanks to inventor Peter Sing’s warp-free contribution to the large wooden door industry.

Close up example of oak wood stave (plank) lamination

The secret to making a big oak door, like this, look like a solid oak door is to use matching oak grain stiles and rails for framing. So instead of edge-banding on the panel sides, you see solid oak wood edges which gives this the impression of being a big solid oak wood door.

extreme close up of corner revealing solid oak stile and rail frame

 

Choose any available type of wood for your wooden doors with Sing Core inside, such as,

Wood Stave vs. Wood Ply

Wood stave doors can be very costly to make, especially if you’re looking for a lightweight high strength solution for a warp-free guarantee for 50 years. Using Sing Core inside your wood stave door featuring wood planks from 1/8-inch to 1/2-inch will create more potential for warp due to the nature of natural wood grain. This is the beauty of the more economical wood ply option for building your wood door. Wood ply is far less expensive and has alternating grain orientation which also helps to keep the door straight. Wood plywood is just like any other plywood except for its featuring a particular wood grain predominantly on the surface, and it offers far more strength and reparability over time than a less expensive wood veneer. So, if you’re looking to attain similar visual results of a solid wood door at a fraction of a price you might consider having Sing Core inside your wood plywood door. Be certain to specify what type of natural wood plywood your want, if it is available, you can save thousands of dollars on your beautiful wood door. The most popular wood plywood features woods such as white oak plywood, maple plywood, oak plywood, mahogany plywood, walnut plywood, Douglas fir plywood, knotty pine plywood, and birch plywood just to name a few.

Large Wooden Doors

Large oversized wooden doors are the greatest hurdle facing architects and designers, because though there is little more impressive than a huge wooden door to catch your attention, so the bigger the better, but then there’s the issue with warping, which is a constant struggle for the owner to secure regular maintenance of such a beautiful wood door, likely at least seasonally.

Thanks to having Sing Core inside, you will never have to worry about warping wood doors again. While they are built to last for centuries, each professionally guaranteed Sing wooden door can be non-warping and include a full structure warranty for 50 years. No other Eco-friendly, lightweight, high strength wood door can have such a guarantee in the world.

And what if you’re looking to build a large door out of a material other than a natural wood grain? No problem, your doors could be made out of any available flat building material, such as aluminum doors, cement, concrete, fiberglass (FRP), glass, HPL, Kevlar, LVL, MDF, steel (cold rolled steel, steel diamond plate, galvanized steel, hot rolled steel, etc.) as well as the only unbreakable mirror doors, just to name a few.

Wooden Door Gallery

Maple Doors

Mahogany Door

Oak Doors

Walnut Doors

Sing Core Wooden Doors

Each professional Sing wooden door can be guaranteed to remain warp-free for 50 years, including a full structure warranty. This is why Sing Core wood doors are making such a huge impact on the door industry across the USA and abroad.

Any type or style of wood door can be made with Sing Core inside, such as exterior wooden doors, wooden barn doors, interior wood doors, wooden sliding patio doors, wood sliding room dividers, wooden French doors, wood stile and rail doors, just to name a few.

Patented Eco-friendly wooden doors with Sing Core inside are proudly made in the USA, using sustainable manufacturing methods using less energy, with responsible use of recycled and renewable resources, including natural wood fiber, producing little or no waste or loss of energy, leaving a negligible carbon footprint.

There is just no other way to make 20 ft. tall wooden doors that will not warp. Wood is a very difficult resource to use for anything over 7 ft. tall because of its tendency to move, especially in exterior wood doors. For instance a wood door that faces the elements on one side and the structure’s interior on the other is going to warp. That’s why no door company guarantees warp resistance of a wooden door for more than one year, that is, unless it has patented Sing Core inside.

So, how can you get wood doors with Sing Core inside? It’s easy, just go to your favorite architect, door manufacturer, mill work, or custom door company, and tell them what size door you want and be sure to ask for, “Sing Core inside.” We cannot sell or ship Sing Core doors directly to consumers or do it yourselfers, as we are the manufacturer supplying Sing Core door core only to door manufacturers and builders of custom doors.

Big Oak Doors

Here’s an example of a pair of 10 x 12 big oak doors, 3-inches thick. These are made using solid oak wood stave (or planks) trimmed thin at 1/8-inch and applied to patented Sing Core engineered substrate.

10×12 ft 3″ thick warp-free 1/8″ oak 520 lbs

The face staves or planks are expertly applied and nearly seamless. If done any other way, these face staves will separate or crack due to movement of the surface area, but because Sing Core does not move, this surface area will remain in pristine condition thanks to inventor Peter Sing’s warp-free contribution to the large wooden door industry.

Close up example of oak wood stave (plank) lamination

The secret to making a big oak door, like this, look like a solid oak door is to use matching oak grain stiles and rails for framing. So instead of edge-banding on the panel sides, you see solid oak wood edges which gives this the impression of being a big solid oak wood door.

extreme close up of corner revealing solid oak stile and rail frame

 

Choose any available type of wood for your wooden doors with Sing Core inside, such as,

Wood Stave vs. Wood Ply

Wood stave doors can be very costly to make, especially if you’re looking for a lightweight high strength solution for a warp-free guarantee for 50 years. Using Sing Core inside your wood stave door featuring wood planks from 1/8-inch to 1/2-inch will create more potential for warp due to the nature of natural wood grain. This is the beauty of the more economical wood ply option for building your wood door. Wood ply is far less expensive and has alternating grain orientation which also helps to keep the door straight. Wood plywood is just like any other plywood except for its featuring a particular wood grain predominantly on the surface, and it offers far more strength and reparability over time than a less expensive wood veneer. So, if you’re looking to attain similar visual results of a solid wood door at a fraction of a price you might consider having Sing Core inside your wood plywood door. Be certain to specify what type of natural wood plywood your want, if it is available, you can save thousands of dollars on your beautiful wood door. The most popular wood plywood features woods such as white oak plywood, maple plywood, oak plywood, mahogany plywood, walnut plywood, Douglas fir plywood, knotty pine plywood, and birch plywood just to name a few.

Large Wooden Doors

Large oversized wooden doors are the greatest hurdle facing architects and designers, because though there is little more impressive than a huge wooden door to catch your attention, so the bigger the better, but then there’s the issue with warping, which is a constant struggle for the owner to secure regular maintenance of such a beautiful wood door, likely at least seasonally.

Thanks to having Sing Core inside, you will never have to worry about warping wood doors again. While they are built to last for centuries, each professionally guaranteed Sing wooden door can be non-warping and include a full structure warranty for 50 years. No other Eco-friendly, lightweight, high strength wood door can have such a guarantee in the world.

And what if you’re looking to build a large door out of a material other than a natural wood grain? No problem, your doors could be made out of any available flat building material, such as aluminum doors, cement, concrete, fiberglass (FRP), glass, HPL, Kevlar, LVL, MDF, steel (cold rolled steel, steel diamond plate, galvanized steel, hot rolled steel, etc.) as well as the only unbreakable mirror doors, just to name a few.

Wooden Door Gallery

Ian Sage No Comments

Metal Doors

When it comes to metal doors, Sing Core is one supportive resource behind the scenes that you may not be aware of, and is the proud creator of some of the best metal doors in the industry.


Although metal doors are traditionally incredibly heavy, Sing Core technology gives architects and door manufacturers the ability to create lightweight doors without compromising strength. This is especially true if you are looking for security doors. Additionally, our doors also have the added benefit of being eco-friendly, made in the USA, insulated, and sound-deadening.

It’s very important that doors be operable, especially pocket doors, bypass sliding doors or double sliding doors. If your metal doors are large in size, or in use as steel security doors, then other challenges must be taken into consideration in the architectural design and specification of your metal doors.

Metal Automatic Sliding Door

When looking for the best metal automatic sliding doors, you want hassle-free installation, low maintenance, and high-quality doors. If your sliding door is missing any of these components, it causes undue stress on the automatic sliding door hardware and the structure that houses the hardware. This can lead to more expensive maintenance issues over time. However, Sing Core doors can avoid these issues by providing lightweight, high-strength, and warp-free door cores that are guaranteed to last for up to 50 years.

Large metal automatic sliding doors with Sing Core inside

Warp-free Metal Doors

Only metal doors with Sing Core inside can be guaranteed to remain warp-free for 50 years. This means your metal doors can be guaranteed not to warp, bend, twist or otherwise fail for 50 years, including the full structure warranty of the door. Plus, the lightweight and high strength characteristics of the door, means less maintenance necessary over time, truly a breakthrough in architectural metal door design specs.

Hot Rolled Steel Sliding Doors

These Hot Rolled steel doors are among the lightest weight hot rolled steel doors for the ultimate architectural panel.

Any Type of Metal Doors

At Sing Core we specialize in creating metal doors that weigh a fraction of other metal doors while providing all the added benefits of having Sing Core inside. We can create custom metal doors in a variety of door skins. These could include beautiful materials like brass, bronzecopper, and traditional materials like steel and aluminum. Our two most popular types of metal doors are aluminum sliding doors and steel sliding doors.

Aluminum Doors

Sing aluminum doors are made to the highest degree of accuracy and precision by supporting the best architects, custom metal door artisans, door manufacturers, millworks, and metal work companies. Many types, styles, and weights of aluminum are availability. One favorite material of Sing Core is anodized aluminum. As seen in the image below, the anodized aluminum creates a beautiful work of art that is both functional and unique.  Anodized aluminum can be created in a variety of colors like gold, red, blue, silver, green, or black to create a door that is high strength, lightweight, and visually gorgeous

 

Metal doors large hot rolled steel sliding door being finished

Large hot rolled steel sliding door being finished

Steel Doors

Our most popular metal doors are created using a variety of different steels. All of our processes create high-tech, ultra-exclusive, and beautiful metal doors. See examples of our cold rolled steel doors, diamond plate steel doors, galvanized steel doors, hot rolled steel doors, or stainless-steel doors in our galleries below. These doors can be custom manufactured to your architectural specifications with Sing Core inside.

 

An architect demonstrating the ease of closing a Sing Core steel door.
Sing Core steel door recently installed at Nike headquarters.
Unfinished Sing Core steel sliding door. Check below to see it finished.

Cold Rolled Steel Doors

Hot Rolled Steel Doors

Metal doors large hot rolled steel sliding door

Large hot rolled steel sliding door

Galvanized Steel Doors

Lightweight one-inch galvanized steel door panel strength demonstration

Lightweight one-inch galvanized steel door panel strength demonstration

Diamond Plate Steel Doors

Metal doors modern diamond plate steel door lightweight stronger than steel

Modern diamond plate steel door lightweight stronger than steel

Stainless Steel Doors

Multiple steel panels can be joined on site to create large stainless steel doors

Multiple steel panels can be joined on site to create large stainless steel doors

Metal Exterior Doors

Metal exterior doors can pose additional challenges, especially if one side of the door is 100% exposed to the elements. Without Sing Core door cores, doors are prone to warping because of the changes of environment. However, by using Sing Core you avoid the issue of warping. The patented Sing Core design can guarantee your door’s structural integrity for up to 50 years

Metal doors with closed edges

Metal doors with closed edges

Metal Kitchen Door

Whether your application is interior or exterior, Sing Core can help your favorite metal door company to build the best metal doors to your specifications and expectations. We can create metal kitchen doors, cold storage metal doors, or insulated metal doors.

Serving the Top Metal Door Manufacturers in the World

Sing Core provides professional Sing Core metal door core to the top four metal door manufacturers in the world enabling them to create a high precision, high performance custom metal doors. All our products are Eco-friendly, made in the USA, lightweight, and high strength. Our  metal doors are guaranteed not to fail for 50 years. You get the ultimate door and core that the planet has to offer.

See also: Metal Sliding Door Gallery

Ian Sage No Comments

The Best Million Dollar Homes’ Best Doors

The best million dollar homes have the best doors, not unlike this $38.5 Million dollar spec home which was recently picked up by Sir Tom Hunter. Doors like these custom 16 ft. tall teak pivot doors could be in your home, and you don’t have to be a billionaire to have them.

The Only 50 Year Warp-free Guarantee and full structure warranty

This luxurious former James Woods $38.5 Million dollar spec home in the hills of Beverly Hills is an example of the kind of home which features Sing doors throughout. While featuring art by Picasso and Warhol, the art pieces were not included in Hilton & Hyland’s sale price.

Located at 1520 Gilcrest Dr Beverly Hills, CA 90210, this a Single family located in Beverly Crest, CA, in Los Angeles county the doors are large in size and may have electronic controlled operation which makes the lightweight and high strength of SingCore the perfect match for high precision and longevity throughout the life of a project as glamorous as this one.

Designed to impress, this newly built 15,000 square-foot modernist home certainly stands out from the crowd with it’s 210-foot infinity edge pool, art gallery, 22-person home theater, wine room and outdoor entertaining pavilion. Along with that comes six bedrooms, ten bathrooms, a spectacular guest house, all the furnishings and three fully stocked bars.

You will see this home featured in the media including this article in the Wall Street Journal and featured on Houzz thanks to the experts working on the project including Bonura Building Inc. – Architects and General Contractors.

“I feel like the door kind of represents the house and you want that to be a big impact… we went with a big door.” ~ C.J. Bonura

Here’s a clip of designer C.J. Bonura taking about this large pivot entry door with Sing Core inside:

 

See full episode below.
Existing 5,000 sq. ft. Craftsman remodeled and added an additional 10,000 sq. ft. of master suite/family/theater and guest house, plus Gazebo.

1520 Gilcrest Drive, Beverly Hills from Abode Entertainment on Vimeo.

For more information, see:

http://www.1520gilcrest.com/

http://www.houzz.com/projects/1982894/gilcrest

http://la.curbed.com/2016/7/27/12287648/beverly-hills-mansion-picasso-warhol

http://www.wsj.com/articles/beverly-hills-spec-house-asks-48-million-1469464710

https://www.facebook.com/Bonura-Building-Inc-Architects-and-General-Contractors-175093799195825/