Interior sliding doors have come a long way, and now you have so many choices available in the most modern sliding door ideas that anyone could have the most stunning side-sliding entry point. From the sliding barn door to the sliding pocket doors, these space-saving sliding interior doors are among the best sliding doors in the world.

The best exterior and interior sliding doors made in the United States of America all have patented Sing Core inside and are guaranteed to remain warp-free for 50 years, including a full structure warranty, and this is not to be found in any other interior sliding doors.

Sliding interior doors may not sound like a complicated job when it comes to including architectural details or incorporating large sliding doors in your designs, but if you’ve had your feet in the clay for some time, you should be aware of the problems which may be presented by internal sliding doors, especially if they are large in size.

First off, the most desirable material for sliding interior doors is any number of natural wood species. Wood sliding interior doors can be a challenge, if not at the outset, then definitely over time. Why? Because wood moves. It may no longer be a part of a tree, but it still responds to changes in the environment, which causes your sliding interior doors to warp.

Thanks to inventor Peter Sing and his inventions at Sing Core, door manufacturers (some of the largest and most prestigious door companies in the world) can create warp-free indoor sliding doors that can be guaranteed to remain straight and true for 50 years.

How to Make Warp-free Sliding Interior Doors

Sing’s patented and patent-pending warp-free wooden door technologies are based on a basic well-known wood crafting technique called torsion box, which is a respected technique for building things out of wood that will resist warping as well as reducing the overall weight of large wooden items such as conference tables and internal wooden sliding doors.

Though Sing’s invention does stop there, his warp-free-door technology goes so much further beyond standard wood working techniques. For instance, he started out by reorienting the direction of the torsion box frame from horizontal to vertical. That, in itself, was a huge improvement for warp resistance and increasing shear strength. But he didn’t stop there, either.

Next, he filled all the individual rectangles (hollow spaces left open in traditional torsion box designs) with rigid foam and secured these metric components between two stress skins using formaldehyde-free glue in the most Eco-friendly manner for the most sustainable substrate known for use in sliding interior doors.

Sing unveiled his truly modern barn door, and the biggest and best door companies, were all over it. Prior to Sing’s invention, the big door companies had all but eliminated the production of oversized doors of any kind due to their propensity to warp, making them impossible to warranty, and repeated service calls made them impractical to offer. If they did take on one or two large sliding interior doors, they would add a rider to the contract indemnifying them from any responsibility due to warp.

Keep in mind that even though the best sliding interior doors have Sing’s core inside, his company does not actually build doors, even though Sing is well known for making some of the most perfect doors, he only supplies the raw product, the door blanks or sliding door core, to the door companies, millworks, and high end custom door manufacturers, who actually create the masterpieces on his canvases for which he is so well known.

They are in the process of expanding their large custom sliding interior door divisions because they can confidently deliver a high precision, high-end solution which includes Sing’s 50 year structure and non-warping guarantees.

So, now you can get large sliding interior doors that are lightweight, insulated, stronger than steel, and made in the USA that are guaranteed not to warp for 50 years. All you must do is to contact your local door provider, and tell them you want, “Sing Core inside.”