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-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.
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.
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.
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.
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.
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.
* 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.
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):
Though Sing Core Doors are available in nearly any wood species, our standard varieties include:
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.
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).
Sliding door
Black walnut sliding door
Black Oak
Bi-directional Walnut
Bi-directional Walnut
Oak
Oak
rift white oak pivot door
Teak
Cedar
Walnut
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.
Birch Plywood
Plywood
Marine Grade Ply
Sing Hardwood ply door has excellent strength, yet is lightweight, features good insulation and better sound deadening qualities than solid wood plank doors.
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
American Plywood
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.
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.
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, bronze, copper, 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
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
Large hot rolled steel sliding door
Galvanized Steel Doors
Lightweight one-inch galvanized steel door panel strength demonstration
Diamond Plate Steel Doors
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
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 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.
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.
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.
Sing Core has been assisting the best high end custom door manufacturers create the most magnificent swinging doors using the best hinged door known. Only the best, most exclusive upscale architects, designers and ultra-custom door makers know if you want the best hinged door for the highest degree of precision, performance and prestige, you want your door to have Sing Core inside.
Hinged Door Warp-free Hinged Door Guarantee
Building a door with Sing Core inside is the only way to create a door that can be guaranteed not to warp, bend, twist or otherwise fail for 50 years, including a full 50 year structure strength warranty. While other doors may be guaranteed for 10 years, most or one or two years, if they are guaranteed at all. Doors over seven or eight feet tall are normally excluded from any warranty due to their tendency to warp the next season.
With Sing Core you can create Eco-friendly swinging hinged doors that are insulated, lightweight, high strength. No need to add extra door hardware to help keep the door straight over time (door manufacturers add extraneous hinges in an effort to keep the door straight). But warp-prone hinged doors, even if they have a full length piano hinge, still warp on the side that latches, and a door that does not operate and cannot be secured is not much of a door at all.
Airtight Hinged Door Seals
Maintaining a perfect airtight seal is of primary importance, plus the added insulation characteristics of any door with Sing Core inside increases climate control while adding sound-deadening qualities not found in other doors, especially in high end laboratories, industrial environments, commercial applications, and homes.
Superior Exterior Hinged Door Applications
Exterior hinged doors often cause problems (especially if they are over 7 ft tall) because one side of the door faces the interior of the structure while the other side of the door faces the elements.
Hinged Panel Doors
Panel doors are assembled of wood (or other material) with separate pieces oriented in cross grain patterns to help mitigate the potential door warping. While this method is somewhat effective, the resulting door does not offer much in the way of high precision, insulation, or performance, but they are pretty. The craftsmanship of a well-made stile and rail door is very elegant and the way the different pieces are joined together offers a certain intrigue when examining the door, especially if it is a wood grain door. But consider the Sing solution…
Sing Raised Panel Door
The Eco-friendly Sing raised panel door is a huge improvement over the traditional stile and rail door, in that it is extremely high-precision (+/- .06 in.) lighter in weight (a fraction of the weight of those solid wood panel doors), insulated for climate control and sound deadening, and stronger than steel pound of pound enabling professional raised panel doors with Sing Core inside to be guaranteed warp-free (will not warp, bend twist, cup or otherwise fail) for 50 years, including full structure warranty. No other door can do all that, and be so versatile.
While a Sing raised panel door can look just like a standard 6 panel door made via the old-fashioned stile-and-rail door manufacturing method, making a raised panel door with Sing Core inside is quite different.
The most important component of the Sing raised panel door is the patented Sing Core material which consists of a hybrid composite of vertical grain torsion box grid filled with rigid recycled foam insulations sandwiched between two stress skins and superiorly bonded with formaldehyde-free adhesive. This gives your door the strength and integrity you’ve always dreamed about. Install the door, and no worries about service calls due to door warp.
The Best Millworks and Custom Door Manufacturers
The best millworks and custom door manufacturers know that the only way to deliver a truly premium product to their high end clientele is to provide them with doors which they make with Sing Core inside, enabling them to guarantee their doors for 50 years, backed by Sing Core’s written guarantee. We take all the hassle and risk out of delivering the best base materials for the best companies and their best customers, bar none.
The Best Flush Doors
Sing Core provides door manufacturers with the best door blanks and flush doors to be used as the best canvases to showcase the artistry and craftsmanship of the finest custom door makers in the world.
Again, if you want to make your Sing flush door look like a panel door, like, say a 6 panel door, the door artisan simply adds the 6 panels and trim to the door’s surface. This is a common approach, especially in door replacement of historically preserved architecturally challenging maintenance and upgrades.
Sing doors are often considered the best replacement doors, especially in exterior door replacement due to the weatherproof door’s characteristics.
Your flush doors with Sing Core inside can easily be modified by adding custom molding, trim or cutting custom lite cutouts for glass installation in any shape at any location to achieve your desired results.
“How can I get doors with Sing Core inside?”
It’s easy. All you have to do is to contact your favorite millwork or custom door manufacturer and tell them what kind of door you want, including the height, width, thickness, style and look you want (you can even bring in a picture of one that you’ve found in a book, magazine, or on the Internet. They will work in concert with Sing Core to make all your door dreams come true.
You can be among the growing many who can proudly proclaim that their doors have, “Sing Core inside.”