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How Sing Core supports contemporary millworks and brings original architectural doors to life. Join top door producers in the country like Pella and Anderson Window and Doors to get on board with the SingCore revolution.

What we do:

We have helped millworks and high end door manufacturers to solve their production problems by providing massive amounts of door substrate to increase their productivity. Sing Core has the best and most efficient machines and technologies to provide the fastest delivery of the highest quality door panels in large quantities for our customers to build high end wood veneer doors, wood stave doors, even the strongest, lightweight, impact resistant, warp-free stile and rail door can start with Sing door substrate, then adding door trim molding to create this new generation of highly advanced door. Stronger, lightweight, warp-free, insulated, sound deadening doors in quantity at a much lower cost than your high-end conventional stile and rail door. Get a price quote, we will help you to improve your productivity without having to hire large production crews to meet your deadline. This is a much better solution as an alternative to conventional stile and rail door.

“We are here to support you.”

Our main business is building very large door substrates that are guaranteed to meet or exceed AWI standards.
You know everything. You know what you can do and you know where trouble is lurking. You don’t want your customers coming back to you, complaining about their door that has warped. 
You’re careful to exclude certain items, such as those largest of doors on your door schedule. You’ve been in the business to know that you are competent and courageous enough to build a magnificent big door, but you also know that problems are just around the corner.
You also know you have nothing to worry about if you take advantage of the

50-year Sing Core Warp-free Solution

Our relationship with our millworks is a tight bond, where we both work with and trust each other. We do our part: to provide you with the best, most efficiently engineered warp-free substrate, with the skin of your choice or not. You decide how much work you want to do on the door in your shop. And you: Make our product look so beautiful.
Neither of us could do this kind of work without the other. This is a symbiotic relationship that we only share with the biggest and best millworks in the world with honor and integrity every day.
We make the best team ever, and you can now offer your clients the best in large doors of any kind with the best guaranteed results in the world.

How to get a price quote:

It’s as easy as 1, 2, 3: Length, Width and Thickness of the door substrate. In one click you can see a shop drawing of the Sing Panel that you are looking to purchase.

Sing Core supplies valuable components to the construction process. Patented Sing panels, posts and beams are integrated into projects where the characteristics of lightweight, high strength, insulation and alternative Eco-friendly manufacturing options are either sought after or used in solving the problems associated with large scale projects.

The process works something, like this:

  1. The Architect specifies, “SingCore” inside the products, let’s say, a large pivot door
  2. The General Contractor seeks out a qualified Millwork who obtains unfinished pivot door from Sing Core
  3. Sing Core manufactures the pivot door blank to architectural specs and ships to millwork
  4. Millwork finishes and installs hardware and provides finished pivot door to the job site
  5. Installers hang and or install the pivot door
What we do the best…the best in the world:
We provide the  best substrate for the millwork and door industries to build the best door in the world. The core makes all the difference. If you use LVL core, wood stave core, particle board core, aluminum core, or paper core you should try Sing Core. Millworks know LVL and wood stave is too heavy and warps, aluminum honeycomb core has no precision  once the core is stretched, paper core is similar and offers very little support and no sheer strength. 
We supply our Sing Core door substrate to the largest door manufacturers to replace their door cores as mentioned previously. One of our largest customers said,

“Since we switched to Sing Core, we never have any warping issue, which was the biggest problem for recalls no matter how hard we tried to make our LVL cores work.”

1. For a highly smooth paint grade surface, such as lacquer finish. 1 with MDF skin, 2 with AB plywood as surface skin. They have one thing in common; no matter which skin you select, as long as it is artisan grade, it will be guaranteed for the flatness, lightweight, and high strength, which is the highest standard in the industry.
2. Veneer-ready artisan grade Sing substrate panels for doors or high end millwork.
3. Wood stave-ready.  By adding 1/8-inch to 3/8-inch hardwood to create a panel which looks and performs better than any solid wood or any other type of door core, guaranteed.
4. Metal door. Almost any metal, or non-metal skin can be use as Sing door finish material. It functions and looks better than any other method, such as welding, or use other type of frame technology. Sing metal panels are stronger pound for pound than any solid material, lighter in weight, and with the highest precision which means longer life span of the products.
5. Increase your productivity by using Sing door panels to replace stile and rail doors.
If you have a job with 10 different sizes and more than 40 doors which could easily jam up your production for days, if not for weeks, contact Sing Core. We could do it in less than 2 or 3 days and ship to you to add veneer, or add trim to make it look like stile and rail doors. Even the professional door maker could not tell the difference, but we guarantee your new type of veneer or stile and rail door will be stronger, lighter, and true flat. No other stile and rail door could perform like Sing Core. This is the reason Sing Core works with the most succesful high-end door manufacturers across the USA. 

Get Things Done Right the First Time

Millworks and door manufactures are rightfully wary about building and installing large or oversize wooden doors using traditional techniques. That’s why the top millworks in the country choose SingCore for challenging projects where they need to get things right the first time.

Guaranteed Warp-free for 50 Years

Here at SingCore we set the bar exceptionally high with a lengthy full structural guarantee that exceeds any other offered in the industry. This covers not only standard size door panels but oversize door panels exceeding 30′ in length.

Renowned for non-warping large doors, inventor Peter Sing’s patented and patent-pending building materials can do so much more. Patented SingCore is suitable for use in unsupported spans of almost any length with proper design support from our “True Flat” estimating team.

Strength of Sing Panel

Peter Sing’s miraculous material just boggles the mind, and is something that you have to get in your hands, or under your feet, to truly understand. Just look at this 13′ span, easily supporting the weight of a man without deflection at only 1″ thick. By including Sing Core in your next project, you may for the first time have complete confidence that your oversize door installation will stand the test of time, with no complaints from your clients.

The SingCore factory, located in the pristine forests of the Pacific Northwest, also builds posts and beams for use in other types of construction applications. They are just as lightweight and strong, if not stronger, than SingCore doors. Our specialty is devising a way to make your next project in to a success, no mater what it takes


Click photo to see 10 ft tall accordion door project details

Lightweight of Sing Panel

How Strong is Sing’s Core?

Independently tested, Sing’s core is 660 PSI, many times stronger when compared to any other lightweight honeycomb-type building material which usually clocks in at between 10 and 110 PSI.

That’s why you will find Sing Core inside impact doors. Sing says, “If you kick other doors, they will crash,

“Kick my door and you will break your leg.”

While lightweight and fully insulated, Sing Core is stronger that steel pound for pound.

Finish to Match Any Style

SingCore offers a huge variety of skin materials, that allows you to achieve any design goal or match any existing element to perfection. Our specialty is in door panels, no necessarily door finishing, which is why we prefer to work with millworks on expensive projects. And, we often refer our clients to local millworks when possible.


Surface lamination types include:

  • Veneer, any species
  • Wood stave, any species
  • Metal – cold rolled steel, hot rolled steel, aluminum, copper, other
  • HPL composites – Formica and Wilson Art
  • Specialty such as white board, black board, magnetic marker board
  • Veneer yourself (hot press ready)
  • Paint grade panels

Every lamination is eligible to receive Peter Sing’s iron clad 50 year guarantee.

Window Openings, French Doors, Man Doors, and Exotic Styles

Our perfectly straight true flat material is capable of fitting in to any form of door. Door openings are flexible and fully custom. Need a curved door? We can make you a custom curved door. Man doors? French Door? Other?


Any Size

Due to the incredible light weight of Sing Core and super strong resilience, the largest doors in the tallest buildings in the United States are built with Sing Core inside.

Perfect edges ready for the top floor of the World Trade Center



us-navy-singcoreThe last thing you want on the top floor of the World Trade Center, is a warped door, and that’s why you’ll find Sing Core inside those doors.

You could find Sing Core from beneath the depths of the sea (US Navy) to outer space (NASA) and everywhere in between.


Low VOA and Warp Free

Our friends at Crestmark Architectural Millwork found SingCore to be particularly useful in large cabinet doors for the Museum of Modern Art. Our warp free oversize panels combined perfectly with the museums need for low VOA materials for archival room use.


SingCore has been used by the Seattle AIA for their flat back style office furniture. Unlike overseas competitors, who focus on quantity of quality, or furniture panels are designed and built to last a century or more. This makes sing core the go to companion for high end yet functional furniture installations. Coming it at 1/3rd the weight of all wood panels, SingCore is extremely popular in the modular or moveable furniture space.

A variety of travel industries are benefited by using Sing’s technologies, including, but not limited to hospitality, aircraft, aerospace, marine, rail, trucks, trailers, and RVs.

Most Sustainability of Any Other Building Material

Peter Sing’s gift to the world is this highly sustainable product which can virtually last forever with little or no deterioration, and can be repurposed on the fly, making it possibly the most sustainable building material in the world.

Can you afford to go without SingCore on your next project?


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See: AWI Millworks

C T Finishing, Inc. Pomona, CA (909) 629 7402
Crestmark Architectural Millworks Arcata, CA (707) 822-4034
Mission Bell Architectural Millwork Morgan Hill, CA (408) 778-2036
A. Secondino & Son, Inc. Branford, CT (941) 639 7188
Amerifix West Haven, CT (203) 931 7290
Adams Group North Port, FL (203) 481 3496
Akira Wood, Inc. Gainesville, FL (352) 375 0691
Andy’s Cabinets and Millwork Inc. Tallahassee, FL (850) 562 3536
Blumer & Stanton, Inc. West Palm Beach, FL (561) 585 2525
Bruce Matson Company, Inc. Honolulu, HI (808) 380 9414
Advanced Woodworking Industries (AWI) Hayden, ID (208) 772 2377
Anderson Cabinet & Millwork Rigby, ID (208) 538 7415
Ameriscan Designs, Inc. Chicago, IL (773) 542-1291
Benchmark Cabinets & Millwork, Inc. Peoria, IL (309) 697 5855
Bernhard Woodwork, Ltd. Northbrook, IL (847) 291 1040
ONSITE Woodwork Loves park, IL (815) 633-6400
Advanced Cabinet Systems Marion, IN (765) 677 8000
Antreasian Design, Inc. Indianapolis, IN (317) 546 3234
A.F. Johnson Millwork Company West Des Moines, IA (515) 277 7222
Allen Millwork Company Wichita, KS (316) 943 5151
America’s Finest Woodworking Team Inc Lexington, KY (859) 254 8999
C & C Millworks, Inc. Baton Rouge, LA (225) 273 1258
Woodward Millwork Group Goodbee, LA (985) 871-7723
Duratherm Corporation Vassalboro, ME (207) 872-5558
Baker & Kerr, Inc. Upper Marlboro, MD (301) 390-1090
Sterling Architectural Millwork Springfield, MA (413) 732 2131
South Shore Millwork, Inc. Norton, MA (774) 225-6300
Woodmeister Master Builders Holden, MA (774) 345-1000
Advantage Millwork Wyoming, MI (616) 248 7908
Allen Bradley Interiors Inc. Rhodes, MI (989) 689 4133
BJC Services Inc Chesterfield, MI (586) 783 4559
Burke Architectural Millwork Livonia, MI (734) 744 9492
Aaron Carlson Corporation Minneapolis, MN (612) 789-8885
A to Z Laminating Specialists Inc Wentzville, MO (636) 332 9961
New Mexico
Antix, Inc. Las Cruces, NM (575) 526 2398
New Jersey
B & M Custom Cabinetry Blackwood, NJ (856) 227 9248
New York
Bauerschmidt & Sons, Inc. Jamaica, NY (718) 528 3500
Beaver Creek Industries, Inc. Canaseraga, NY (607) 545 6382
Deerfield Millwork Water Mill, NY (631) 726-9663
Jim Illingworth Millwork Adams, NY (315) 232-3433
Reilly Windows & Doors Calverton, NY (631) 208-0710
North Carolina
Carolina Top Shelf Charlotte, NC (704) 376-5844
Caseworx Hudson, NC (828) 212 0000
Amtekco Industries, Inc. Columbus, OH (614) 228 6590
Advance Cabinet Designs, Inc. Eugene, OR (541) 465 3394
McFarland Door & Millwork Lakeview, OR (541) 947-5136
Allegheny Millwork & Lumber Pittsburgh, PA (401) 721-5500
Beam’s Custom Woodworking Inc. Morgantown, PA (610) 286-9040
Bristol Millwork Inc. Philadelphia, PA (215) 533-1921
Rhode Island
All State Fabricators Cranston, RI (401) 785 3900
Artisan Millwork Pawtucket, RI (412) 431-4224
ANA Woodworks, LLC Chattanooga, TN (423) 867 3171
21st Century Manufacturing Houston, TX (832) 593 0123
3V Company Houston, TX (281) 717 1200
Abilene Millwork Abilene, TX (325) 677 8856
Acacia Originals Porter, TX (832) 256-9631
AEP Millwork Arlington, TX (817) 522-4542
Bespoke Millwork Houston, TX (281) 598 4880
Brochsteins Houston, TX (713) 666 2881
HEWN – Joinery + Mastercraft + Fabrication Austin, TX (512) 386 6404
Maverick Door and Millwork, Inc. Schertz, TX (210) 659-5553
Robert Shaw Manufacturing Fort Worth, TX (817) 927-2557
Boswell Wasatch Mill Springville, UT (801) 489 7527
Annandale Millwork and Allied Systems Winchester, VA (540) 665 9600
AAA Cabinets & Millwork Inc. Airway Heights, WA (509) 484 7152
Interior Environments Seattle, WA (206) 432-8800
West Virginia
Allegheny Restoration & Builders Inc. Morgantown, WV (304) 381-4820
Eggers Industries Two Rivers, WI (920) 793 1351
Kolbe and Kolbe Milllwork Co., Inc. Wausau, WI (715) 842-5666


Harvest Creek Millwork London, ON (519) 680-7482
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Looking for a millwork to finish your SingCore project?
Find an AWI Millwork Near You

patented Sing sliding non warp large doorOur primary affiliation is with the millworks that are highly skilled and qualified to deliver an end product which exemplifies the highest and best use of our patented SingCore building materials. In fact, when we receive inquiries about our products, our first question is, “Who is your millwork company?” If they do not have one they are working with, we suggest they get one and have them contact us directly.

SingCore is an extraordinary building material that left to itself is not much more glamorous than any other engineered plywood, even though nothing can compare to SingCore’s unparalleled light weight and strength. Yet, in the hands of a skilled millwork, their specialized craftsmanship is what makes Eco-friendly SingCore shine with the beauty and elegance SingCore products are known for.

Millworks face many challenges when bringing the architect’s vision to life. In some cases, the limitation of available building material can render a potential job impractical or even impossible.

Click Here to Get an Estimate


Large non warp exterior sliding doors guaranteed for 50 years lightweight high strengthFor instance, a particular project might include a large wooden door. If the large wood door is an exterior door over seven feet tall or over four feet wide (as is the case for most modern pivot entry doors) millworks and custom door manufacturers will simply pass on the large door portion of the job, forfeit the entire job altogether based on the oversized exterior door, or if they do take the job may agree to build the large door according to the architectural specifications but will not offer a warranty on the performance of the big door.

Large exterior doors, especially large wood doors, are a problem because millworks and door manufacturers know the doors will fail due to warping. It’s nothing personal; it’s just the nature of the beast being the wood grain itself which tends to move according to changes in temperature, moisture or other environmental conditions.


Building warp-free wood doors of any size with SingCorePatented SingCore when engineered by the warp-free team can prevent any large door from failing over time. Millworks are confident they can provide a solution for any project including large doors of any size if they have SingCore inside, guaranteed.

Clients may ask for a warranty on the large doors (that without SingCore inside could not be warranted) and the millwork can now offer the professional SingCore guarantee – in writing – that the doors with professional SingCore inside are guaranteed not to warp, bend, twist or otherwise fail for 50 years.

Working with SingCore


Easy to CNC router

Millworks use either open edge or closed edge Sing Panel, whichever works best for the project at hand, as well as many options for skin types, solid blocking, custom lite cut outs, solid and exterior edging options.

SingCore is easy to machine and work with using traditional woodworking tools, CNC and edge –banding machinery and equipment.

Used as substrate material, SingCore can be delivered to the millwork ready for cold press or hot press lamination. Alternatively, millworks may desire exterior surfaces to be applied in our factory, which makes their job easier.

Standard door width door blanks with SingCore inside for added strength and lightweightSingCore Durability

Products made of Sing panels are easy to repair damage to its original condition simply and easily by cutting a hole (you can even use a chain saw without compromising the structure due to its unique Sing Core torsion box/foam and stress skin composition). Any repairs will have the strength, integrity and durability of the original structure.

Professional Sing Panel Product

All Professional Sing products are guaranteed warp-free and structure guaranteed for 50 years. We can accommodate your specifications, just let us know your required tolerances for flatness, and Sing Core can provide the solution guaranteeing your customer’s satisfaction and your peace of mind.

SingCore Expertise

DSC_0721We specialize in providing solutions for high-end applications and millworks, based on the requirements of our customers, meeting or exceeding their expectations and those of their clients by using the right materials and years of warp-free solution experience. Add to that, our commitment to you, to do everything in our power to support you in your efforts to remain competitive and win the bid.

If you are a millwork operation serving high-end clients, our 50 year guarantee for Sing products build both you and your customers’ high levels of confidence.

Services for Millworks

1. Oversize

stacks of lightweight high strength trade show display panels ready to shipSingCore excels at creating warp-free oversize doors blanks or substrates in almost any exterior surface material; most popular is wood and/or aluminum up to 50 feet long in almost any thickness.

2. Production Work

We can custom manufacture to your specifications large quantities of door planks or panels in odd sizes for millworks used for doors, tabletops, room dividers, temporary walls, cabinetry, countertops, etc…

3. Custom Accommodations

We can provide the customizations that you desire, like lock blocks, solid wood implants, anchor points for fastening, custom lite cut outs, a full range of skin and edging options.

Sing Core Team Guarantees:

1. On-Time Delivery
New technology enables higher production at lower costs, perfect for large quantity orders in least amount of time and shipping is much quicker and easier than other methods.
2. On Budget
Our simple pricing method makes it easy to track your bottom-line, plus our commitment to help you, “Win the Bid,” for large quantity orders and lower cost of shipping due to being so lightweight.
3. Highest Quality
We only build the best door for the best clients in the world. High-end clients rely on us because we deliver only the best. Rest assured, your clients will be getting only the best doors backed by our 50 year guarantee.

How is it possible?

High Technology
Best Price
Best Doors
Increased Capacity
SingCore uses the latest and most sophisticated, yet Eco-friendly technology to build the best doors in the world. Our specialty is the most challenging oversized doors for the most high-end clients in the world, with pride. SingCore door with our modern facility and new door building technology is 5 times more efficient than conventional door manufacturing. Fill out the simple price quote then you will see how together we can win the bid. SingCore doors are the only doors among the door industry that can be guaranteed warp-free for 50 years, lightweight, stronger than steel pound for pound, insulated, sound deadening, Eco-friendly, long-lasting and resistant to rot over time. Thanks to SingCore, you can bid on jobs that may have been considered previously to be too large for you. No reason to be intimidated by door jobs of more than 50 doors, as we can easily make 300-door-blanks-a-day for you.

See: Door Specifications

Example Sing Solution

One of our most prestigious clients in the Mid-West needed 700 specific door blanks to fulfill an order. Rather than dedicate their resources to this order, they reached out to SingCore. We made the door blanks in three days, so the client was able to go on about their business as usual without having to bear the cost of adding staff, equipment and re-tooling.


Fast turnaround time – It took less than 3 days for SingCore to complete the order

High quality – Each door was manufactured with patented SignCore technology in Washington state, ensuring the end user guaranteed strongest true flat and lightweight doors. Note that the light weight of these doors saved more than half on shipping costs.

Easy to fabricate – Due to the patented SingCore process and our factory’s design and dedication to high quantity production, we are able to make more Eco-friendly doors in less time at less cost.

“…we were unable to compete for large quantity orders.”

true-flat-doors-in-quantity-fast-delivery-coast-to-coast-compareMany of our partners report, “Before teaming up with SingCore, we were unable to compete for large quantity orders,” admitting that they simply stopped bidding on large quantity jobs (anything over 50 doors), because they knew they were no match for the major players; until SingCore.

SingCore routinely provides 200-to-300 doors blanks a day to distinguished door manufacturers, enabling them to compete even against companies that provide cheap import doors. With the majority of the work done in advance (Sing door blanks are easy to work with to build all types of sing doors) you can concentrate on finishing, adding hardware, delivering and installing the doors, knowing that they are receiving a superior product that guarantees satisfaction and longevity.

Sing Core Wood-based Foam Aluminum Balsawood Nomex Plastic Cardboard
Insulation x x x x x
Sound Deadening x x x x x
Lightweight x x
Strength x x x
Solid x x x x
Eco-friendly x x x x
Renewable x x x x
Oversize x x x x x x
Dimensionally Stable
Affordable x x x x x
Waterproof Upgrade? x x
Fire Retardant Upgrade? x
Bullet-proof Upgrade x x x x x
Thickness Available x x x x x x
Skin Options x x x x x x
Easy to Machine x x x x x x
Fast Turnaround x x x x x x

Building Components



More Applications


Best Sellers


Important News


Meet some of our Mill works

Client List

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Solid Wood Stave Door Blanks

Applications -> Building Components -> Doors -> Solid Wood Blank Doors
solid wood stave sliding door wood planks composite honeycomb panels

Click on picture to see our wood skin gallery!

Our panels make doors!

Patented Sing Core solid wood stave door blanks feature the newest technology in the door industry for composite doors yielding the only eco-friendly, lightweight, fully insulated, high-strength doors with wood blanks of any size (up to 40 ft.) that can be guaranteed true flat and to stay flat for 50 years.

Large door versus regular-size door challenge (i.e., over 4 feet wide and over 8 feet in length):

Large doors are heavy, dimensionally unstable, require more strength due to the heavy weight, and are a challenge to manufacture, ship and install.  High-end jobs require precision and true flatness to please the customer.  A homeowner’s architect, general contractor and mill worker must solve the problem of warping doors.  The solution to the challenge is to use patented professional true flat Sing panels to make your doors.

Sing Core wood stave door planks are the only solid wood doors that will not warp, bend, twist or cup following installation.  This means no more continuous service calls for maintenance of big doors that cannot possibly stay straight due to the limitations of solid wood – or any other door core – that is subject to failure.  Sing panels have a patented honeycomb/torsion box interior which gives lightweight yet unsurpassed strength (pound-per-pound stronger than steel) and stability to any door, and allows Sing Core to provide a 50-year guarantee

Interior Doors:

Sing panels make amazing designer doors in any style.  With Sing panels, fragile doors such as French doors are made lightweight yet strong, not warping or breaking hinges, which will last for many decades.

Exterior Doors:

Sing panels make sturdy exterior doors in any style.  With Sing panels, exterior doors are lightweight and strong, even when oversized.  Our professional doors are guaranteed to stay true flat and not warp or twist for 50 years

When is a door not a door? When it fails to function as a door.

The problem is that all door core materials are either not high precision, too heavy or will move when exposed to moisture, humidity or change in temperature resulting in door failure.

Heavy solid metal or steel will not warp, bend or twist, but is not high precision due to welding (sing core tolerance is + or –  .006 inch!) and is often impractical due to the overweight issues causing excess strain on both the hardware and structure, causing continued maintenance issues.  The solution is our patented lightweight yet strong Sing core technology.

Finishing a door blank:

There are two types of finish for door blanks:  paint grade and wood grain.  Paint grade includes such finishes as metal, Masonite, marine plywood, etc.  Wood grain finish includes such finish as solid wood stave and thin veneer.

Why Use Solid Wood Instead of Veneer?

solid wood composite door planks any size thickness true flatNever settle for substandard veneer doors again. Door engineers prefer to use inexpensive veneer as opposed to real solid wood facings because veneer is thought to be less likely to warp, bend or twist.  But thanks to the super-strength of patented Sing Core technology, you can use solid wood stave and wood blanks with confidence knowing that your door can be guaranteed true flat and will stay flat.

How can a solid wood-faced door stay true flat? As every woodworker knows, when using a solid wood surface, the grain will move according to moisture or temperature change causing the door to fail. When using our patented Sing Core as a substrate you can safely use solid wood because the solid torsion box/honeycomb patented material is continually keeping the wood grain straight and true.  Whereas wood stave has more wood fiber giving it more of a chance to warp than thin veneer due to the unbalance of the both side of the door moisture contents, patented Sing technology solves this problem by combining stiffing skin on both side of our patented Sing core.  This Sing panel technology eliminates the troublesome movement of the door blank — warping is no longer a concern when wood stave is combined with patented Sing core.

In addition, solid wood is easy to work with, install (no need to hot press), repair and remodel.  That’s why professionals trust Sing Core’s years of expertise in helping to design the only wood stave doors (that look just like solid wood doors) that can stay straight and true for many decades while respectfully honoring the beauty and elegance of solid wood, which far outlasts easily-damaged veneers, yet can be sanded and repaired if necessary.

Celebrate your real wood!

solid wood stave door planks lightweight honeycomb guaranteed 50 yearsOur Eco-friendly lightweight, high strength alternative is the best   solution for combating the issues associated with weight and size,   especially large doors.  Only our patented Sing torsion box/foam   composite core combined with our years of experience provides   guaranteed solutions for oversize doors.

That’s why this technology is found everywhere, from beneath the sea   (US Navy) to outer space (NASA) and everywhere in-between.

Sing panels may be finished in almost any wood species, like   mahogany, redwood, teak wood, cherry wood, walnut wood, cedar   wood, Ipe wood, sapele wood, poplar wood, ebony wood, ash wood,   oak or any other hardwood or exotic wood types available.

This same wood blank composite technology is also a common solution for high-end projects like engineered hardwood flooring, shiplap, wood furniture, wood shelves, decking, shed doors or any other application demanding high precision and exemplary performance over time.

How is wood stave/veneer added to Sing panels?

Wood stave is added directly to the metal or wood skin our patented Sing cores.  Wood veneer is added to an 1/8-inch mdf attached to the metal skin.  Call us for a free consultation on the best option for your project.

How to BuyMetal Composite Sing Core panels are true straight, light and strong.

To order Sing Large Door panels see our pricing page  and submit an order form either by email,  info@singhome.com, or print and fax it to: 360.495.4585. We’ll provide a quote within one business day. If you have questions, please contact us.

Easy Ordering

All we need to know is the length, width, thickness and what you desire on the exterior, and your custom specialty panels are made to order. Getting a quote for your specialty product, is easy, thanks to our simple online order system.

Bulk Discounts

If you’re looking for a bargain price, remember, the more you order, the less expensive your total order will be per piece. Quantity and wholesale inquiries are encouraged. Feel free to contact us for more information. Click here for Closeout specials.

Fast turnaround: In you’re in a rush, only Sing Core can be custom made within 24 hours and is proudly manufactured for you in the USA.

Fast delivery: Any thickness and almost any length, less than 5 ft wide, can be made with in 48 hours if it is rush order.

SINGCORE Large Doors are easy to order. You may choose from our stock panels or order custom sized panels. Our price is based on the length, width, thickness, and quantity. Submit a Work Order by fax or email, and we will give you a quote within one business day. If you have a tight budget, give us a call, we might have an alternative solution tailored to your needs.

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Sing Core Metal-Skinned Panels

lightweight panel honeycomb high strength sing aluminum

Click on picture to see our aluminum page.

Click on picture to see our cold-rolled steel page.

Click here to see our galvanized steel page.

Click on picture to see our galvanized steel page.

Click here to see our stainless steel page.

Click on picture to see our stainless steel page.

Our patented Sing Core honeycomb/torsion box panels can be covered in a metal skin of either aluminum , cold-rolled steel, galvanized steel, stainless steel, etc., depending on the desired effect and/or use.  (See applications.)  When covered in metal skin, our lightweight 2 x 2 inch grid panels include the following features to order:1)          Inch per inch stronger than steel (tested at 660 PSI);2)          True flat to 1/16” per 8’ (for 50 years with our professional guarantee);3)          Lightweight;

4)          Flutter/rattle resistant;

5)          Rust resistant:

6)          Non-combustible;

7)          Highly resistance to moisture corrosion/waterproof/water resistant/storm proof;

8)          Resistant to fungi;

9)          Available in a variety of finishes, thicknesses and densities with numerous panel edge options;

10)        Sound deadening;

11)        Insulated from R3 to R6.6;

12)        Standard panels come embedded with solid wood edges for easy assembly;

13)        Available in almost unlimited custom shapes and designs; and

14)        Many more custom features.

In addition, our Sing panel cores are made with our patented, formaldehyde-free, non-toxic eco-friendly glue and recycled foam.  Overall, metal Sing panels are the superior choice for strong yet lightweight building materials and are proudly made in the USA.

For projects requiring long panels, Sing Core’s special invisible seam technology creates extremely long/tall panels with unsurpassed strength and rigidity that still remains true flat up to 50 feet. Thus, metal-skinned Sing Core panels exceed AWI standards.  Our large Sing panels stay dimensionally stable regardless of temperature and moisture changes.

For projects requiring special features, our metal Sing panels can be specially upgraded. For example, Sing core panels can be made fire retardant, bullet-proof, radiation-proof, etc, according to need.  Sing panels can also be manufactured up to 6 inches in standard thickness (custom thickness available).

Metal-skinned Sing panels can be used to make projects ranging from kitchen tables to walls to doors to metal roofing to metal floors to truck panels to electrical towers to outdoor benches to magnetic panels to modern art.  The possibilities are virtually unlimited!

Rush jobs can be custom made within 24 hours with material availability and delivered within 48 hours if less than 5 feet wide.

To determine pricing and to order see our pricing page.

Compare the available gauge:

(click to enlarge)

Metal guage weight table
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With Our Free Consultation, Professional True Flat Doors are Guaranteed Not to Warp for 50 Years!


True Flat ChallengeSing-panels-lightweight-high-strength-honeycomb-core

We do not sell finished doors, but provide door planks to door industries and mill workers with patented Sing Core panels to build the most true flat, insulated professional doors in the world guaranteed.

Warping is a challenge for high-end door makers.  However, professional Sing Doors are highly insulated doors that will NOT warp, bend or twist. 

Professional Sing Doors made of patented Sing Core materials and special skin are the only Eco-friendly, lightweight, high-strength, insulated doors that are true flat and will stay true flat for 50 years guaranteed (with our free consultation and an additional cost) regardless of application or size.  Professional Sing doors will remain true flat even if they are garage doorspanel doorssliding doors, carriage doors, or oversized large doors!

True Flat Guarantee premium certified true flatProfessionalSing furniture, such as conference tables, will also remain true flat.  Our guarantee means you do not have to be afraid of warping, bending, twisting or expensive maintenance.

The secret is our patented Sing Panels combined with appropriate skin (even wood), length, thickness and knowledge of years of experience in handling thousands of over-sized, challenging doors (for example see our Warehouse door).  See our coast-to-coast clients list. 

Patented Sing Core panels are about 15% the weight of particleboard, pound per pound stronger than steel and cost less, but more dimensionally stable than any wood core, a great advantage in your factor-in shipping costs.

 This technology has endless applications.  Click here to see how:  Door News Archive

Only certified-professional (with free consultation) true flat Sing Doors qualify for our 50-year guarantee.  For other true flat doors, we may be able to make them more flat than the industry standard by adding more thickness and strong skin with a proper Sing core in order to build a true straight but less costly door plank. 

Sing Panels are changing the way doors are made.  Any type, style or appearance of any door with any shape, size or number of window-light openings, CNC cut-outs to offset the high labor cost of traditional style and rail doors.  One more reason that Sing doors are making record sales.

You can Google search our lightweight, high strength, true flat door to see our expertise:  Google Images

New and Improved Large Sing Doors

Our most recent developments include our highest performance large door solutions yet. Take for instance our most precision lightest weight and highest strength large wood pivot door that is not only true flat but guaranteed to stay flat without warping, bending or twisting for 50 years!

12 ft x 10 ft wood pivot door lightweight high strength non warping 50 year guarantee

This large wood pivot door is 10 ft. x 12 ft. and perfectly flat. Now, wood is normally a problem for any door, especially a large door, but used in conjunction with Sing Core door technology, we have taken large pivot door technology to a whole new level.