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True Flat Challenge

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

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Note:
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.