sliding-door-perfectly-straight-gap-high-performance-pocket-door-true-flat-high-end-guaranteedSing products have hundreds of applications but sliding doors and oversize doors are the most popular.

Why does Sing Core make more oversize sliding and big doors than anything else?

Because only Sing Doors are

1. True flat

It’s a challenge for people in the building industry to build oversize large doors and big sliding doors that are true flat and stay flat (especially sliding door if it is not straight, then it’s easy to see the failure by examining the door gap with the naked eye) for years to come with little or no deflection. Sing Core even achieves the highest precision in flatness in doors up to 50 feet in length.

2. Lightweight

Compared to other door material that is insulated, sound-deadening, and has some structural integrity, Sing Core weighs much less, weighing in at only 4 to 5 pounds per cubic foot!

3. High Strength

Once you’ve experienced a Sing Core Door, there is no doubt that it is the most rigid high-strength building material available, and most are astonished at how something so lightweight could be so strong. In fact, Sing Core has been tested by the University of Washington to withstand 660 PSI without fail.

And More…

As if true flat, lightweight and high-strength weren’t enough, Sing Core has many other attributes, like insulation and sound-deadening properties as well as being resistant to warp, twist and rot.

Your Eco-Friendly American Made Solution

Sing Core is proudly manufactured in the USA and is an important advancement in building technologies for the green-minded individuals who, like inventor Peter Sing, want to make the world a better place.

Virtually Limitless

Sing Core can be transformed into nearly any flat building material by laminating to its surface, increasing its potential attributes exponentially.

If Sing Core makes the best door, then think about how it might affect other industries… because a door without a frame is a wall, laid flat is a floor, ceiling or table top and it can be cut and ripped for furniture and unlimited applications, including post and beam.

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

To order Big Sliding and Oversized Doors submit an order form either by email,, 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 Big Sliding and Oversized 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.