Tables
The sky’s the limit when it comes to creating your sing table to meet your specifications, whether it is an extravagant dining room table, lightweight high-strength folding table or high-end custom butcher block table.
- Microsoft Table
Throughout the Hospitality Industry, Sing Core’s tables are making a huge impact, making it possible to have a lightweight, high-strength table that – even if extremely oversize – will not warp, bend, twist and can easily carried, stored away or reconfigured on-the-fly. These unparalleled new technology tables are turning up in the finest hotels, motels and resorts in the United States.
- Sing in your favorite coffee shop
Proudly made in America, fine dining establishment are embracing the Eco-friendly table top materials in their restaurants, banquet rooms, nightclubs and luxurious casinos.
We are proud to serve the most prestigious millworks in helping them to achieve their highest and best for their discerning clients.
How to Make Lightweight Quick Table
True Flat 25 Foot Long Conference Table
How to Build Lightweight Folding Table
- Kitchen Islands
- High Strength Work Tables
- Beautiful Wood Floors
Surface Material Suppliers Links
Products -> Material Options -> Supplier Links ->
Surface Material Suppliers
Boulter Plywood Corp.Wood Veneer Supplier and IndustryCrane CompositesPaperStone |
Qualified Sing Core Builders Aaron Carlson Architectural Woodwork |
Oversized Doors | Warp-Free Door Cores | SingCore
About SingCore
SingCore manufactures a patented lightweight, warp-free door cores and oversized door slabs used by architects, millwork shops, and builders across North America.
As door designs continue to grow larger, traditional construction methods often struggle with weight, warping, and size limitations. Large solid wood doors can become extremely heavy and difficult to keep flat over time, especially as heights exceed eight or ten feet.
SingCore door cores allow fabricators to build larger, lighter, and more stable doors without the problems associated with conventional door construction.
Our technology makes it possible to produce oversized pivot doors, tall entry doors, and large flush doors that remain flat while weighing significantly less than traditional solid wood doors.
50-Year Warp-Free Guarantee
SingCore doors are backed by a 50-year warp-free guarantee, providing long-term confidence for architects, builders, and property owners.
Warping is one of the most common problems in large doors. As doors increase in size and weight, traditional construction becomes more susceptible to twisting, bowing, and structural movement.
SingCore door cores are designed specifically to maintain long-term stability, allowing large doors to remain flat and functional for decades.

No Maximum Door Size
Most door manufacturers impose strict limits on door dimensions. These limits are often driven by weight, structural stability, or hardware constraints.
SingCore removes those limitations.
Because SingCore door cores are lightweight and structurally stable, architects and millwork shops regularly use them to build doors that exceed the typical size restrictions found in traditional door manufacturing.
Common applications include:
• oversized pivot doors
• 19-foot doors and taller
• large entry doors
• wide pocket doors
• architectural flush doors
• custom interior doors
Instead of designing around limitations, architects can design doors that match the scale of the space.
Lightweight Oversized Doors
Large doors constructed from solid wood or traditional cores can weigh hundreds of pounds, placing enormous strain on hinges, pivot systems, and structural framing.
SingCore doors can weigh 50 to 70 percent less than comparable solid doors, making them significantly easier to install and easier for hardware systems to support.
Reducing door weight also improves long-term performance by reducing stress on pivots, hinges, and frames.

Built for Architects and Millwork Professionals
SingCore manufactures unfinished door slabs supplied to trade professionals. Millwork shops and fabricators apply their own veneers, laminates, or finishes to complete the door to project specifications.
This approach allows SingCore to support a wide range of architectural door applications, including:
• oversized pivot doors
• flush interior doors
• entry doors
• sliding doors
• pocket doors
• custom architectural doors
Because every door is custom manufactured, SingCore can accommodate unusual sizes, thicknesses, and design requirements.
Custom Door Manufacturing
Every SingCore door slab is built to order.
Doors can be produced with:
• custom dimensions
• custom thicknesses
• MDF, plywood, or laminate-ready surfaces
• Suitable for any hardware
• oversized architectural formats
This flexibility allows architects and builders to create doors that would otherwise be impractical using conventional construction.
Made in the USA
SingCore doors are manufactured in the United States, McCleary, WA and supplied to architects, builders, and millwork companies working on residential, commercial, and institutional projects.
By focusing on high-performance door slabs and cores, SingCore allows fabricators to complete the finishing and detailing required for each project while benefiting from a door core designed for large-scale architectural doors.
Our Mission
SingCore exists to help architects and builders create larger, lighter, and more stable doors without the limitations of traditional construction.
With a 50-year warp-free guarantee and no maximum door size, SingCore continues to expand what is possible in modern architectural door design.
Tiny House Builders
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Architectural Specification Substitutes
Due to being the newly invented and possibly the most significant improvement in building materials in the last century, it is not uncommon to see Sing products recommended as substitutes for products in the original specifications initially specified by architects. Even though Sing Core is new, we are not that new and have years of experience to assure or most demanding clients that they only deliver the best to their clients.
Why would you substitute Sing Core?
Eco-friendly
In this day and age, it is of primary importance to take into consideration that the impact of your project will have on the earth. Everything we do to help preserve our precious planet is a step toward providing a better world for all life for generations to come. Sing Core’s true green technology is a huge step toward responsible sustainability.
Lightweight
One of important advantages of sing Core is its lightweightedness when compared to other building products. Other traditional building components that can even come close to matching the lightweight characteristics of Sing Core are extremely weak and have little or no structural integrity. This might be acceptable for visual representation upon installation, but may deteriorate rapidly over time, something that you might need to consider in the design process.
Extremely High Strength
Sing Core is super strong, so strong, in fact, that independently tested results from the University of Washington revealed a PSI of 660-to-over-1,100 pounds per square inch of compression strength, which is stronger than steel pound for pound. This is why you see Sing Core substituted in extreme weather, under heavy loads, maintain strength over long spans, blast and bullet proof applications.
True Flat
Prior to the invention of Sing Core it was nearly impossible – or extremely expensive and laborious – to build a true flat door (or any other surface desired to be flat over a long span with little or no framing). In fact, current regulations for flatness allow for a ¼” of deflection over a 6 foot span. Sing Core outperforms any other material and can be combined with wood and other products and still be guaranteed true flat.
Inexpensive
You might be surprised that a building material that is made in the USA cost much less than other composite materials and is so affordable, that it is not priced much more than particle board and can end up being much more inexpensive especially when you factor-in savings in shipping, handling, installation and maintenance costs.
Guaranteed for Life
Sing Core is such a structurally sound building material that it is possibly the only material that can be guaranteed for life, but is designed and built to last for centuries, with little or no deterioration over time, when product is used as specified. When product is properly matched to application, sing Core will not warp, bend, twist or rot, like other materials.
And that only comprises the top half-dozen reasons that people are switching to Sing Core.
As the project owner, you may have just found us on the Internet and want to see Sing Core featured in your project due to all the added benefits. We work hand-in-hand with designers, architects, contractors and homeowners to make sure that you have the right Sing products to match your requirements and specifications. This makes the job safer and more efficient for your general contractor and your architect will thank you for being diligent and for introducing them to Sing Core which they will continue to include in future designs.
How to Specify Sing Core Inside Your Doors
When specifying Sing Core inside your doors, you can specify “Sing Core” as the manufacturer but note that the doors will need to be finished by a millwork or custom door manufacturer. This about how this might impact the price (important for contractor during price estimations). It would also be helpful to also specify weight ratio of “3 to 4 pounds per square foot” and “50 year warp-free guarantee,” to prevent substitution by the contractor. You don’t want your client to end up with a substituted non-Sing door and be unaware of it until it warps later (see example).
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.
Not Just for Doors
Certainly, we are best known for our door applications, and for many years, people thought of us as a door company because of how superior this material is in that specific application. While we have established ourselves as the perfect door builders – especially when addressing challenging door specifications for oversize, sliding or hinged applications – Sing Core has nearly limitless applications and is featured in many of the most high-end homes. We are the only door that can be guaranteed even after being exposed to weather conditions and no other wood door can be guaranteed true flat.
Rarely does a day go by where we don’t see someone versed in contemporary architecture design who reaches out to Sing Core to solve another issue of strength vs. weight, saving economically by reducing shipping, handling, installation, repair and maintenance costs, and upgrading the overall green value of a project.
If you have just discovered Sing Core, it is not too late to substitute sing products for the traditional products that were originally specified by your architect. We work with architects and designers to make sure that you have the right sing product to match your specifications, meeting (or exceeding) any expectations that you might have.
We can help you with the substitution submittal process and we have staff on-hand with the experience to make sure that your needs are met or exceeded, and the results can be guaranteed for life (per warranty certificate accompanying your guaranteed Sing product).
If you are like many of our users, you will find that once you discover Sing Core, you will start finding solutions to your dreams and ideas that may have been limited by available building materials of the past.
Join the revolution and see our clients list to see some of the most successful business staying on the leading edge of building technologies by embracing the Sing Core advantage.
Steel Doors
Applications -> Building Components -> Doors -> Door Links -> Steel Doors
Core Value of Steel Doors
It is how steel door shapes the future by invention of Sing Core.
See: Steel Door Gallery
Steel door technology has not made any major improvements since the development of EPS core which has higher insulation for replacing the paper core and wood based core used previously. Sing Core uses reinforced EPS or urethane foam to fill the voids of the structural torsion-box-like vertical veneer in those highly insulated Sing products, and… Viola! You have the strength which is approximately 30 times stronger than any other regular door made of foam. Steel doors made of patented Sing Core is the leading edge door technology that provides more insulation, strength and extremely lightweight. The end result is more Eco-friendly door; stronger and lighter weight without using heavy gauge steel but creating an even stronger steel door. Click here to see the steel panel regular foam vs. Sing core
Achieve the security, safety and elegance of the most economical, advanced steel door technology to your entryway with Sing Metal Doors made in your choice of high quality stainless steel, galvanized steel or cold rolled steel.
This photo features a fully insulated 13 ft. x 3 ft. x 1 inch steel door with 20 gauge metal under 160 lbs. of load with hardly any deflection. No steel studs, no welding. See pix of steel panels ready for door applications.
Sing Steel Doors are the only insulated Eco-friendly steel doors that can be guaranteed true flat thanks to patented Sing Core’s torsion box/foam composite base material that not only ensures flatness at the time of manufacture but stays flat for centuries.
Lightweight
You get it all; Huge savings in heavy weight when compared to solid steel while exceeding standards of high-strength and built-in insulation backed by our limited lifetime guarantee at a fraction of the cost. It’s why we say, “Heavy does not mean strong – and light does not mean weak.” Sing Steel Doors weigh much less than other steel doors and do not require heavy steel reinforcement studs to achieve the high strength. Steel doors made Sing Core do not need expensive, heavy duty hardware required by regular heavy steel doors.
High Strength
Compared to solid steel doors, Sing Core is stronger than steel pound for pound. Patented Sing core could reach 1000 PSI strength vs. paper honeycomb core traditionally used in the steel industry and is changing how steel doors are made. Sing steel doors will not dent or kink like regular hollow core, paper core or foam core steel doors.
Economical
Patented Sing Core costs a fraction of high-end honeycomb substrates, like those used in traditional aerospace applications, and still outperforms any of them in lightweight, high-strength, eco-friendly economical solutions bar-none. And that does not even take into consideration the reduction in transportation/installation costs and reduction in maintenance and repair costs over time.
No Welding
Sing Steel Doors are manufactured without welding which reduces labor costs, environmental and health hazards and our patented method will not compromise the integrity of the steel surface of the steel door, like welding does. No need to compromise the integrity of your steel doors by incorporating the most high precision Sing Core (+/- .006 inch) material and our patented metal fabrication process.
Custom Lite Openings
Sing Steel Doors can come complete with custom lite opening cutouts for adding glass to your door. You are not limited to the type, shape or style of cutout for your glass opening. Other steel door companies offer a variety of window openings to select from. Sing Steel Doors allow you to create any glass enhancement that you can imagine.
Steel Door Replacements
Sing Steel Doors are the number one replacement steel doors specified by architects and designers who demand high-quality and longevity backed by our rock-solid limited lifetime warranty. See our Clients List.
Steel Door Hardware
When it is of primary importance to achieve high-end security and stability of a steel door, one invariably runs into the issue of heavy steel doors causing additional strain on the structure and hardware. Patented Sing Core eliminates the heavy weight of solid steel while out-performing solid steel.
Service Industries
Sing Steel Doors are replacing other steel doors used in commercial, healthcare, educational industries as they are being retrofitted in schools, hotels, storm shelters and retail installations.
More Options to Meet Your Specifications
Sing Steel Doors are completely customizable to your specifications. For years the design teams have been working with architects, designers and contractors to solve the problems associated with pre-existing steel door technologies. There is nearly no limit to composite options that can be adapted to the sing Steel Door that will satisfy your requirements.
Variety of Applications
The versatility and customizable attributes of Sing Steel Doors offers almost unlimited applications including (but not limited to) bullet proof, lead lined, extreme weather, tornado, hurricane**, fire door, STC rated* and acoustical applications.
Available in Any Size or Configuration
Sing Steel Doors are available to meet your specifications and are not limited to a catalog of available items. Commercial steel doors are the best steel entry doors that are available in any configuration including steel double doors and commercial exterior steel doors.
Fast Turnaround Time
Special rush orders for custom size doors can takes less than one day if we have the materials required in stock.
Eco-friendly Sing Steel
Only Sing Steel Doors are a composite of patented Sing Core embracing our true green technology for a better world and steel which is one of the most recycled materials on our green earth.
Added Security and Benefits
Sing Steel Doors have the added benefits of increased security for vandalism-proofing, protection against windstorm or other acts of god, water proofing, increased fire protection and sanitation.
Substitute Architectural Spec # 08 13 19 Stainless-Steel Doors
Hot Rolled Steel Large Sliding Doors
- insulated patented metal Sing door
* 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.
**Customer will need to perform lab tests to certify hurricane rating for local code compliance.
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