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Sing Core Update

We produce patented and patent-pending door blanks for high end door manufacturers and mill works in the industry.
Sing Core door blanks are most popularly used for large sliding doors, pocket doors, pivot doors, hinge doors, and carriage doors. Most commonly we create door blanks for doors that are 8 ft. to 20 ft. tall, and range from 4 ft. to 25 ft. wide.

On average, how much do Sing Core panels weigh?
approximately 2-3 lbs. per square foot. If you double the thickness, you quadruple the strength while increasing the weight by only 5-10%.

How straight is a Sing Core panel really?
We guarantee the same or better than the AWI standard. We are always able to achieve the most dimensionally stable reinforced insulated panel than any other door core. This includes very large and thin doors which pose the most challenge to remain straight. Only our patented and patent-pending technology is able to achieve this. If other door manufacturers are unable to guarantee your doors, please contact us. We will be able to ensure your doors will be straight before we even produce it for you. We are the most experienced non-warp, high strength, and lightweight door panel manufacturer in the world.

What kind of skins do you offer?
The most popular skins we offer include veneer, wood stave, metal, MDF/paintgrade, or marine plywood for exterior applications.

What type of style or design door can you make with Sing Core?
You can add trim or moulding to create a design or can use a CNC machine to carve any design you can imagine, from classic 6 panel styles to complex artistic designs with or without light openings. The possible designs are endless, but Sing Core creates the strongest lightweight and non-warping door panels in the industry. Every door comes guaranteed by inventor Peter Sing.

What type of home uses Sing Core door panels?
Our door panels are used in a wide variety of applications, but most commonly in high-end luxury homes; homes over 8 million dollars for our extremely large door panels.

What type of trade professionals does Sing Core service?
Architects for luxury homes, high-end millworks, nationwide high-end door manufacturers, and general contractors with access to a millwork. We do not sell our products to home owners.

What’s new besides providing the best large door blanks?
We are starting to build standard sized unfinished door blanks for door manufacturers for them to build affordable high-end stile and rail doors. We have been producing MDF skinned paintgrade door blanks in large quantities. Our production line is capable of building hundreds of standard door blanks per day. If interested, send us a schedule of the doors for your project and we will be able to make your door panels at an affordable price; including your large doors. We don’t and are not capable to build doors, we just supply the most straight, non-warping, high strength, lightweight door panel for door manufacturers or millworks to build the highest quality doors at an affordable price.

Who does Sing Core sell their products to?
Most Sing Core door panels are sold because they are specified by high-end architects while designing their multi-million dollar projects or by top millwork companies building high-end doors for very demanding luxury homes.  Luxury homes often require large doors for various applications in the home; Sing Core large door panels could be used for sliding doors, pocket doors, or pivot doors that need high precision, high-strength, lightweight, and non-warping door cores.

A millwork company that has been using our patented door technology for over 10 years told us, ‘We have not had any issues with our doors since switching to Sing Core.’  Before, even if they are the top door company in the USA, oftentimes they would face recalls which is their worst nightmare.  With our Sing Core innovations and revolutionary technology, we can offer the only 50 year guarantee in the door industry.  They love our 50 year guarantee, as most manufacturers in the industry only offer 1 year guarantee or no guarantee at all.  Call us if you would like to have that peace of mind.  We provide the best door panels and peace of mind in the high-end large door industry.

We also work with general contractors to provide Sing Core unfinished door panels to their designated millwork to properly finish their doors.

We do not sell finished doors.  We do not sell our door panels or substrates to people outside of the building industry’s door designers and manufacturers.  We do not sell to homeowners or door distributors.

Architects Love Sing Core
Architects spec Sing Core in their huge doors because they trust Sing Core to provide the high-precision, lightweight and dimensional stability, which makes them look good when it comes to these oversized egress points, building credibility with their clients. They know there is no known door construction method that can accomplish such a feat.

Let us know if you are interested to learn how to build any style or design of door with Sing Core panels using a CNC machine subcontractor. You can find CNC subcontractors by searching the internet with phrases like “CNC wood co-op” or “CNC wood shop for rent.” You can find CNC shops to be rented if you are or know a CNC operator. See picture of possible doors you could build by using other wood working machines and talents.

Besides very large doors, standard doors in large quantity, Sing Core technology proves to be useful for all different industries. Click here to see the endless applications of patented and patent pending Sing Core.

High-end doors are often sold for tens of thousands of dollars and should last a lifetime. Door companies usually do not offer any guarantees for doors over 10 ft., the most they offer could be 1 year only. Sing Core will provide a written guarantee for 50 years. This is why Sing Core is recommended by our fellow door manufacturers to use our products. Let your friends and associates know that we are ready to service your needs if you are looking for peace of mind for any large door project you may have.

Sing Core is the best lightweight, high strength, non-warping material. Our product uses our patented and patent-pending technology to solve the issues associated with high-end large doors; not only in the US but in the worldwide – especially Europe. Often times, when a customer is building a $10 million and up house and use other door technologies, they tend to warp over time. This same customer then comes to Sing Core to solve their problems. No one else can create a door like this that can remain straight, and we guarantee it for 50 years.

When talking to a door company you have to ask questions like, “What is your guarantee against warping?” or “How long is your guarantee?”

Warping is the biggest issue in large doors besides weight issues or insufficient strength.

Often times you find out that the other doors companies do not offer guarantees for doors over 10 ft. and sometimes they have an issue guaranteeing doors that are less than 10 ft. The best guarantee they may offer is for only one year.

Lets say you have a $15-25 million dollar home and the doors are only guaranteed for one year. If you have problems with them and call the company after one year they will tell you that you no longer have any guarantee.

Do you want to deal with that kind of door or do you want to rest easy with Sing Core?

We guarantee our doors for 50 years. If the door does not last 50 years, then why would you want to spend tens of thousands of dollars for doors that aren’t reliable?

Sing Core has a deal with most high-end door companies in the US.

Our performance shows. We haven’t had a single door fail.

When a door fails, everyone panics; from the architect to the millwork to the general contractor and especially the high-end clientele. ‘It’s not just about the money, but the reputation.’

At Sing Core, we keep your reputation. No body else in the world can the issues with large doors.

You are a high-end professional, you do not want people to call you and complain that their doors have failed. We know how you can panic if a high-end customer complains. We can help you sleep better by avoiding the trouble a head of time.

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Sing Core Referral Program Pays $500+

Sing Core Referral Program

Introducing the Sing Core referral program. After you sign up as an affiliate, you will receive a special tracking code which enables you to invite others to take advantage of either of two offers which appeal to separate target audiences.

Referral Program Pays $500+

refer-a-friendWhen our affiliates refer a customer to Sing Core via their coded link, we track your referral for 90 days. If your referral submits a price quote at any time within 90 days of your click, you get full credit for that sale, after the product(s) have been paid for and received by the client.

There are two Sing Core affiliate opportunities. 

#1 – Promote Sing Doors and/or Panels

#2 – Make $500 for Recruiting Sing Mfg

#1 – Promote Sing Doors and/or Panels

Pays $500 or 10% (whichever is greater) per first time sale made by first-time buyer.
Sing Doors and Panels are the only Eco-friendly lightweight (1/3 or less the weight of other wood-based products) and high strength (660+ PSI, stronger than steel pound for pound) made with Sing Core inside which are high precision (+/- .006 in.) and can be guaranteed to remain warp-free for 50 years, regardless of the size (could be huge).
Primarily used in high-end residential (multimillion-dollar homes), military applications, security, commercial, industrial, and scientific industries.
Affiliates paid on client’s first order, following shipment and receipt of order.

#2 – Make $500 for Recruiting Sing Furniture Maker

Pays $500 per person recruited as a Sing Furniture Manufacturer.
Sing Furniture Makers are home-based businesses. The incorporate the basic woodworking skills of local craftspeople to assemble, sell, and distribute patented Sing furniture made of modular furniture components.
Participants desiring to participate in the Sing Furniture Maker Program, pay $4,000 for kit to start, affiliate gets paid $500 for referring new Sing Furniture Maker. Sing Furniture Makers gets $12,000 (or more) worth of furniture to assemble and get paid, as many times as they want, with new incentives to pay less or make more along the way.
3 to 4 weeks delivery. Referral fee paid following receipt of kit by SFM.

Contact Sing Core


Whether you are participating in our referral Reward Program or acting as a Sing Core Customer Representative, you must contact Sing Core prior to referring or representing to ensure that you receive the proper credit for your efforts.

referral-program

 

 

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Standard Door Widths

How wide is a typical interior door?

Standard interior doors in the United States are 80″ tall (6′-8″) and between 28″ and 36″ wide. The most common width is 32″, but an increased width of 36″ is recommended due to increased accessibility for the disabled.

SingCore offers a variety of custom made door panels to fit any size and requirement. From very large, to standard size interior / exterior doors, and even high end cabinet designs.
Don’t let the “standard” constrain your design when you can be free with the amazing door panels offered by SingCore.

What is the width of a normal door?

Typical interior doors are 32″ wide in the United States, although they may range from 28″ to 36″. Exterior doors are often 36″ wide, but can vary from 30″ to 48″.

For wide doors in a limit space, on increasingly popular option are pivot doors, which offer the grand feel of a wider than average door while maintaining space savings and usability.

What is the standard width of a bathroom door?

The most common size for a bathroom door is 32″. Although, in tight spaces they can be as little as 28″ or 24″ inches. For space that require wheel chair access, doors should be at least 36″ wide to accommodate all ability levels.

When building a bathroom door, be sure that you have considered every eventuality. Particular to bathrooms are concerns about moisture and sound penetration. SingCore panels are particularly suited to harsh environments. We guarantee the structure of our panels for 50-years, which means you are able to count on your bathroom door functioning flawlessly for years to come.

Further, we offer patented foam and wood cores that significantly reduce noise propagation compared to commonly found door designs. Keep your private time private with SingCore.

What is a standard interior door width?

Standard interior doors in the United States are 80″ tall (6′-8″) and between 28″ and 36″ wide. The most common width is 32″, but an increased width of 36″ is recommended due to increased accessibility for the disabled.

Standard exterior door size

Typical exterior doors in the United States are 80″ tall and 36″ wide. There is some variation in width from 30″ to 36″ inches. 36″ wide doors are recommended to allow for easy access for the disabled.

SingCore also offers “standard oversize” doors at 8′ by 4′ that are suitable for designs that stand above the crowd without excessive expense. In particular, we are well know for our work with oversize pivot doors, sliding doors, metal skin doors, and solid “wood stave” doors for higher end applications.

Standard bathroom door size

Although there is no standard door size, many bathroom doors in the US are 80″ tall and 32″ wide. Some doors vary between 28″ and 36″ wide.

American standard door size

Although there is no accepted standard size, interior doors are typically 80″ tall and 32″ wide, while exterior doors are typically 80″ tall and 36″ wide.

Proudly Made in America

Standard door height

Most doors are 80″ tall in the United States.

For a unique or above average look, SingCore recommends 47.5″ tall doors for installation in a typical residential home, and taller for multimillion dollar homes or commercial spaces with high ceilings.

What Can We Do for You?

SingCore offers a wide variety of finishes and completely custom sizing for high end door panels, and other architectural panels. Contact us today with details about your next project to see how SingCore can help you!

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Sing Solution Considerations

What should you consider when seeking out the Sing solution?

1. Dimensions Affect Price

 

Sing Core can build anything that can be panelized, from large pivot doors to hangar doors and panelized structures such as warehouses or even Sing Log Homes. Very large panels or walls can reach enormous proportions and can be made modular for near seamless assembly on site. Other factors which affect the overall price of your project will be,

2. Importance of Surface Material

 

The skin material used on your panel’s exterior greatly affects how the substructure is built. Basically, the greater the tendency for the exterior surface material to move, the more of Sing’s True Flat engineering is required to create a hybrid substrate which will counteract the panel’s tendency to warp, bend, twist, or otherwise create a challenge in the field over time.

Cutaway shows detail of patented reinforced vertical grain torsion box core

3. Sing Core Inside

The core of the panel in question can come in many different variations besides the patented and fully insulated, reinforced vertical grain torsion box core to match the high precision performance expectations of your project. Many considerations are made to determine the size of the patented structure grids as well as integration of patent-pending counter-warp materials to achieve desired results.

4. Thickness

Thickness of your panel and each of its features affects everything. For instance, it is much easier to keep a panel straight and true the higher the percentage of patented Sing Core is inside your panel proportionally. Even if your surface material is natural wood, your client might desire 3/8” thick material, when using 1/8” material is far more effective, and the difference is not noticeable on the end product.

All of these things play a part in the design and engineering of your panel in terms of

Giant Factory Door Extremely Light Weight

A. WEIGHT

The overall weight of your custom panel(s) is determined by the sum of all the components which are necessary to create a one-of-a-kind solution which meets your required specifications. The greater the amount of Sing Core inside your panel, the less it will weigh and the stronger it will be.

B. STRENGTH

No other substrate in the world is more lightweight or high-strength than inventor Peter Sing’s Sing Core, which provides for a solid composite core based on Sing’s patented insulated and reinforced torsion box structure, which is stronger than steel pound for pound (660+ PSI). By doubling the among of patented Sing Core, you multiply the strength of the panel four times.

C. WARP-FREE

Besides being Eco-friendly and made in the USA, patented Sing Core is the only substrate which can guarantee your panel will not warp, bend, twist, or otherwise fail. In fact, this revolutionary building material enables the best door companies in the world to build large doors of any size which can be guaranteed warp-free for 50 years (a first in the industry).

Affordable Sing Core Made in USA exported to Thailand

Affordable Sing Core Made in USA exported to Thailand

BUDGET CONSIDERATIONS

Sing solutions for problems and challenging projects can be costly, but they may also be extremely affordable depending on your performance expectations.

If you are on a budget and flexible about some of the elements of your design, there is a good chance that Sing’s True Flat Team may be able to reengineer a solution for you that will both meet your budget and your performance expectations.

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Real Wood but 1/3 the Weight of Solid Wood

Sing Core is a patented and patent pending real wood material. With a real wood exterior, and an environmentally friendly wooden torsion box core, you get the look of real wood, with one third the weight and a strength greater than steel by weight. Further, our custom panels do not warp.

Our material can be worked with ordinary woodworking tools. And, is in almost every respect a superior light weight alternative to wooden planks, beams, and sheets.

What Kind of Wood is Lightweight?

When you think of light woods, your mind typically goes to Spruce, Balsa, Box Wood, or some other exotic tropical variety.

But, here at SingCore, we specialize in super lightweight wooden panels with almost any wood finish. Need a walnut panel that weighs less than spruce, then we can make one custom just for your project. Wood skins can supply include, but are not limited to:

  • lightweight-panelPine
  • Cedar
  • Cottonwood
  • Alder
  • Ash
  • Oak
  • Walnut
  • Beech
  • Maple
  • Birch
  • Teak
  • Mahogany
  • Fir
  • Cherry
  • Rosewood
  • Elm
  • Larch
  • Ebony
  • Hickory
  • Spruce
  • Purpleheart

 

 Is Balsa Wood the Lightest Wood in the World?

No! SingCore is the lightest wood in the world! Our lightweight and super strong core is both 1/3 the weight of typical wood or less, yet stronger than Oak. If you need something that exceeds every other material that you have worked with in the past, then you need SingCore.

Which Wood is the Strongest?

The strongest wood in the world is SingCore. Our wooden torsion core, with custom exterior faces with any wood veneer, wood stave, metal, plywood, plastic, or other finish, is stronger than steel by weight. Yet remains surprisingly light for its size.

Lightweight Wood Sheets

Sing Core makes the lightest and strongest wood sheets on the market. All our panels are made directly to order. All we need from you is the desired length, width, thickness, and desired skin finish.

Our wood sheets are guaranteed not to warp, and are covered by a 50-year structural warrantee. Although we are not the cheapest, we stand by our product the longest of any manufacturer in the market.

Lightweight Wood Board

Sing Beam and Sing Board can be custom made for you application. Easy to move. Perfect straight. Lighter than wood. But, stronger than steel.

What Kind of Wood is Light but Strong?

For a light board or panel that has the look of wood, with solid wood staves, but is much lighter than wood should ever be, then you have come to the right place. SingCore makes custom, to order, panels that exceeds the strength of any other wood on the market.

Lightest Wood for Shelves

Sing core panels make amazing shelves. With little to no VOC, they can be used in almost any sensitive situation.

The panels are so strong that they can easily support the weight of a morbidly obese man, yet they remain remarkably light to the touch.

Lightweight Wood Panels

If you are in the market for lightweight wood panels for — doors, general construction, furniture, cabinets, architectural use, trade shows, or other special purpose, contact our estimates department today.

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How to Join Sing Doors

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.

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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.

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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.

 

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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 (up to 16 ft.)
  • 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.

 

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

 

 

 

Paint Grade Door