- Plywood, MDF, Masonite
- Formica, HPL, or other plastics
- Metal such as steel (cold rolled / hot rolled), aluminum, copper
- Dry wall
- Other interior finishes
Walnut Sliding Doors
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Looks matter! For a super light weight cutting edge modern door design, Sing Core is your best bet.
This beautiful walnut sliding door is 148 1/8″ tall x 53″ wide x 2″ thick. Solid 1/8″ walnut wood stave skin gives a natural look that is both modern and stylish. Yet our panel is one third the weight of wood yet stronger than steel by weight
Exterior Sliding Walnut Doors
Our panels look amazing outdoors and in doors. Strength of Sing Core panels include:
- Core is mostly highly insulated foam with an internal wood structure
- Sound deadening characteristics
- Weather proof (when properly finished).
- True Flat means door remains easy to operate and tightly sealed for the lifetime of the door
Interior Sliding and Pocket Doors
The beauty and sound deadening properties of sing core doors are doubly appreciated when used as an interior sliding. Furthermore, interior sliding doors can be frequently operated, such as closet doors or large room dividers. Such frequent use is facilitated by the light weight nature of the panels. Yet the dense and strong construction feels like a solid piece of wood to the user.
Walnut Double Sliding Patio Doors
If your are in need of a distinctive, one of a kind, custom made patio door for your project, look no further than Sing Core. Every one of our panels is made custom — to order — to meet your precise specifications.
Custom blocking, light cut outs, edging, and other features can be included or removed to meet your needs and pricing concerns.
Panels can be used in any door application, including sliding and double sliding doors. The same panel, with different internal support and blocking, works perfect for pivot doors, hinge doors, overhead garage doors, carriage doors, pocket doors, and hidden doors.
Walnut Sliding Door Hardware
SingCore doors do not come with hardware, but are designed to work with the hardware of your choice. Any commercially available hardware or custom hardware package can work with our doors provided they support the weight required.
In order to match with the hardware of your choice, SingCore embeds custom solid wood blocking in the core of the panel around the edges, measured precisely to meet with your hardware configuration.
SingCore panels can be worked just like wood. And, will be familiar to millworks, cabinet makers, wood workers, and contractors who have experience with traditional doors.
SingCore is the best choice for your project!
Sliding French Walnut Patio Doors
Sliding french patio doors offer a distinctive look for the discerning home owner.
Sing panels are uniquely suited for french doors because of their ability to be cut in to any configuration of windows or light openings to suit your need without loss of strength.
Consider our panels to be the clay for your sculpture. We can form them to meet almost any need, any size, any thickness, and any surface material.
Contact SingCore today and request a free consultation and estimate for your project.
Pivot Door Gallery
- Walnut Pivot Door Edge View
- Walnut Pivot Door Edge View
- Walnut Pivot Door
- Walnut Pivot Door Edge View
Jib Doors
About Jib Doors
Jib doors are also known as hidden or invisible doors because they are decorated to look like the wall with concealed hinges and hardware. It’s very important for your jib door to remain perfectly straight so as to maintain the seamless appearance in the wall hosting the jib door.
Little more is important in the creation and operation of a jib door than maintaining high precision over the life of the door. If the door warps, you lose the advantage of having a secret door that gives access to an otherwise inaccessible area. That’s when a door is no longer a door, as it just becomes another part of the wall, or will not secure properly, or exposes the otherwise invisible door because the material is either twisted or bent.
There’s one way to build a perfectly straight jib door, even if it is very large, and remain perfectly straight. In fact, inventor Peter Sing has been doing just that by providing the biggest and best door companies, millworks, and high end custom door manufacturers with his patented and patent-pending warp-free jib door materials. And that might leaving you to ask, “How good could they be?”
They are by far the best warp-free materials on the planet used to build the very best Eco-friendly lightweight high strength in the world, which can be
Guaranteed Warp-free for 50 Years
Let there be no mistake that Mr. Sing could not make a claim if even one of his high end clientele reported that his material failed, after being in service for more than 20 years. Sing has not had one such claim. This is his specialty.
Sing has created his top shelf True Flat Team, which designs and creates each custom door core which is built using his patented and patent-pending warp-free technologies to make incredible doors, even of enormous size, which will not warp, bend, twist, cup or otherwise fail, including delamination, for 50 years.
There is no other way to accomplish such a feat, and as you might have guessed, if there were such a way, those big door companies would be doing it. To this day, they admit,
There’s just no other way to do it.


Jib doors must maintain the seamless appearance of just being a part of the wall, except in the instance of a bookshelf doorway, where the door itself is also a functional bookcase on one side of the door using the same concealed hinge and door securing mechanisms as the invisible or hidden door, like these classic hidden hallway doors.
Of course, it all depends on the size of the opening and the construction of the existing wall that will host the jib door, too. The hidden door will have two vertical seams which need to remain flawlessly straight and true to remain invisible to the naked eye. Unless the doorway will span from floor to ceiling, there will be a horizontal seam at the top of the door which may also need to appear the be seamless.
Hailing from the Old World, jib doors have made there way to the Americas. While no longer used to conceal clandestine activities, including one or more jib doors in your contemporary architecture design project is growing in popularity and is influencing the design, engineering, and building of invisible jib doors. There is no longer any suspicion or negative implications, or having to answer the question, “Why do you have a jib door?” Jib doors are a growing segment among modern doors.
If your jib door is warped, the seam will become visible thereby defeating the purpose of having a hidden door if it no longer appears to be an invisible door at all, and the door’s secret is blown. That’s where Sing Core comes in.
Millworks and high-end custom door manufacturers know they can rely on Sing Core’s ability to provide a warp-free job door blank which will remain straight and true enough to protect the hidden door’s secret of invisibility over time.
If you’re dreaming about having a very large jib door, like a floor to ceiling full moveable wall, Sing Core’s light weight (weighing-in at a fraction of other solid jib door cores) and high strength (660+ PSI, stronger than steel pound for pound) enables architects, designers, and engineers to realize a full articulating wall, which can pivot, swing, or slide open and closed easily via cell phone. Where there once was a wall, there is none and you have full access to the space.
Make a Whole Wall Disappear
Then there’s this case; What if you wanted the whole wall to be a door. Here’s a job where the client wanted to whole exterior wall converted to bifold jib doors. No problem, if they have Sing Core inside.
Plus, if your invisible door has Sing Core inside, you get the added safety and security of having a fully insulated sound deadening jib door which is also highly effective in maintaining consistent temperature control on either side of the wall door.
And if that’s not enough to make you insist on specifying Sing Core inside your next architectural jib door, consider this:
Your jib door could be backed by inventor Peter Sing’s unparalleled 50-year warp-free guarantee. Sing’s jib door cores are guaranteed not to warp, bend, twist, or otherwise fail (including full structure and delamination) for a full 50 years.
No other Eco-friendly lightweight high strength door can compare in terms of weight vs dimensional stability.
- Invisible Door
- Hidden Hallway Doors
- Secret Compartment Door
New Generation of Wood Doors
New Generation Wood Doors are the new generation of wood grain doors available with patented Sing Core inside.
- Butcher Block Maple
The perfect combination of durable damage resistant beautiful wood grain surfaces and rock solid lightweight insulated vertical grain torsion box interiors, resulting in the most versatile Eco-friendly warp-free doors, guaranteed for 50 years!
There’s never been a better wood grain door to hit the streets with such beauty and grace with the highest precision and long-standing performance records, while being guaranteed not to warp, bend, twist, or delaminate for 50 years.
New Generation Doors are high pressure laminate doors which have incomparable value in comparison to other HPL doors available thanks to using patented Sing Core as the expert door core. Sing door core is the same product used in multi-million-dollar mansions, by the military, in the tallest building in the United States’ Freedom Tower, by Ivy League universities, and NASA. Now you can have your piece of the good life, and rest at ease knowing your New Generation Wood Door has Sing Core inside.
New Generation Wood Doors are perfect for owners and managers of high-end high traffic establishments such as hotels, government facilities, universities, schools, medical buildings, hospitals, and the health-care industry as double egress doors, or as patient room doors.
- mahogany wood grain
Nearly impervious to damage, New Generation Wood Doors have all the elegance of solid wood doors, featuring a solid composite door core material that is lightweight and will withstand the test of time. They make the perfect replacement doors for hospitality industries, and high traffic entertainment venues such as stadiums, and casinos.
In comparison to her shirt-tailed cousins, the natural wood laminate doors, which are prone to deterioration and easily damaged, New Generation Wood Doors are HPL laminate doors that are known for their long service life and are nearly impervious to surface damage.
In factories and intense production facilities, New Generation Wood Doors are resistant to heat, steam, moisture, and water, making them the hands-down door solution in industrial environments.
For use in Multi-family dwellings, condominiums, and apartments, cleanup is quick and easy business, as New Generation Wood Doors sport a smooth, non-porous surface which can easily be cleaned by wiping them down with a damp cloth for superior functionality and hygienic regular everyday use.
- pear wood grain
- teak wood grain
No other door has such superior performance in terms of durability and strength. New Generation Wood Doors feature unparalleled impact resistance and resistant to surface damage, shock, scratching, denting, gouging, or otherwise scarring.
In keeping with Sing Core’s commitment to helping to create a better future world for all earth’s creatures, New Generation Wood Doors feature HPL laminate made from renewable resources and manufactured in an environmentally friendly process, preserving precious timber for other applications, thus protecting domestic and exotic trees.
If you’re cost conscious, HPL laminate doors are a fraction of the price of their natural wood stave alternatives, without having to sacrifice a thing, in fact, you get so much more with New Generation Wood Doors designed and build to last for centuries, and,
“The first 50-years is on me.”
-Peter Sing, President and Inventor of Sing Core
New Generation Wood Doors, the new generation of wood doors with all the beauty and elegance of solid wood doors at a fraction of the price, which are lightweight, stronger than steel, and guaranteed warp-free for 50 years.
Step into the next generation of wood doors with New Generation Wood Doors.
High-end clientele, see our authentic wood doors, which also carry our 50 year guarantee.

Architectural Sliding Doors and Walls
Nothing says “professional” like the unique quality of Sing Core’s patented custom architectural sliding doors and walls. When other manufacturers see our product, they wish they could provide the highest quality in terms of lightness, strength, and straightness that we deliver. Unfortunately for them, we must humbly say, our product is the better of the two.
Designed for High Budget Projects
By design, our panels work best for high budget projects that need something exceptional for their project. Our panels comes unfinished and potentially untrimmed, with the custom skin variety of your choice, ready for finishing and hardware.
Sometimes customers ask us, “should I use this panel in high-end 10+ million dollar house projects?” Our answer is yes!
When it comes to architectural doors of any variety, including sliding, pivot, carriage, moveable wall, hinge, or anything else.
Modern Solutions for Sliding Doors with Volume Based Pricing
With commitment to clean design, premium materials, and high quality craftsmanship in every architectural sliding door panel we manufacture to your specification.
Featuring monumental panels, the Sing Core door system allows for stackable or pocketed configurations with a practically unlimited numbers of panels. With almost unlimited frame material choices, Sing Core samples complement any architectural style helping you meet the design goals and performance criteria of your project.
Sing Core offers our clients a range of options and materials for every type of high volume, medium volume, or low volume project. Along with our excellent customer service, we can guarantee your projects success.
Custom Size Patio Doors
We make doors of any size based on your specification. Architects, millworks, and contractors of all varieties can benefit from our flexible manufacturing methodology that excels where others fail and exceeds where others cannot!
Successful Client Relationships Begin with Mutual Satisfaction
In business, just like life, both parties must be happy after the interaction. That is why Sing Core operates under the philosophy of fair exchange. This is what we call “fair.”
To make sure you are left smiling after we are done, we offer an unprecedented and unparalleled 50-year structural guarantee on every professional level panel that we make. That way you and your clients have no fears of the future with our product. Should the unthinkable happen, we will replace your panel no questions asked once proved unworkable.
Find the Right Fit For Your Next Project
Sing Core knows that high end products required a wide variety of materials to be successful, and we have you covered. No matter whether you need:
- Wood Stave: oak, alder, cedar, mahogany, teak, pine, fir, or anything else you can imagine
- Wood Veneer: oak, alder, cedar, mahogany, teak, pine, fir, or anything else you can imagine
- Metal: Cold Rolled Steel, Hot Rolled Steel, Aluminum, Copper, or anything else you can imagine
- Formica: any color, glossy, matte, marker board, chalk board, or other
Find the Sing Core Panel that Best Meets Your Needs
Ordering with Sing Core is simple: just provide us with length, width, thickness, skin material, blocking requirements for you door, shipping destination, project budget, project timeline, and contact information. Then we get back to you quickly with a fair price on custom panels to meet you specifications. See our new C Series line of Affordable Barn Door and Sliding Closet Doors.
Hinged Door Gallery Pictures Photos
- Peek-a-Boo (SO-P)
- Thin Slat Door (SO-T)
- Slat Door (SO-S)
- French door (SO-F)
- Insulated Walnut Door
- Lightweight Ceramic Door
- Paint ready with lite cut outs
- Finish and/or paint doors to specs
- Honeycomb sandwich unfinished door panel
Pocket Door
Pocket doors have become an integral part of modern architectural design. Despite the many advantages of pocket doors, they do present unique challenges in both the manufacturing and the installation process.
About Pocket Doors
Pocket doors are desirable as they are invisible in the opened position as the pocket sliding doors are hidden away in cavities within the walls in one, or two opposing, wall(s). Pocket doors serve as a retractable room divider, functioning as an elegant and effective method to separate one large space or two adjoining spaces, while the sliding door divider(s) disappear(s) into the wall.
Proceed with caution, as pocket doors can be hugely problematic if they move according to changes in the surrounding environment. A warped pocket door will damage the finish as it rubs against neighboring surfaces and if it bends or cups too much can get lodged inside the wall, and the bigger the pocket door, the greater likelihood of warping.
There are many reasons to have your pocket doors made with Sing Core but the number 1 reason is to stop worrying about warped pocket doors once and for all by specifying
Sing Core Inside Your Pocket Door
Thanks to inventor Peter Sing’s patented and patent-pending large pocket door technologies, you can have an Eco-friendly pocket door that is lightweight, high strength, fully insulated for sound deadening and climate control, covered by Sing’s
50 Year Warp-free and Structure Guarantee
There is no other way to build a high precision (Sing Core tolerance is +/- .006 in.) sustainable pocket door that can remain straight and true, spanning the test of time.
The Best Pocket Doors
Sing Core has become known for making some of the largest, most impressive sliding doors on the market. Pocket doors are sliding doors that slide into a pocket in the wall. Certain customers have come to know Sing Core, not only for our sliding doors, but also for our magnificent pocket doors. Introducing the best pocket doors!
Pocket Door Challenges
The concept of pocket doors seems simple very simple. They are similar to sliding doors in that they slide on tracks and typically use rollers to open and close. The big difference is that they slide into a pocket that has fixed dimensions inside the wall. If the door warps or skews, the door cease to function. You will not be able to open or close the door because warping will change the dimensions of the door.

Warp Free Pocket Door
Over decades, we have developed our patented and patent pending materials that allow for super strong, light weight, warp free door construction. Warping and skewing present significant problems for pocket doors, because pocket doors must slide into a fixed space inside the wall. Any deviation from specifications will prevent the door from fitting into the space. When this happens, your door will cease to function. You will need to buy a new door, change out your hardware that may bend or break as a result of door malfunction. In some cases, you also need to rebuild your door frame or your walls when they are ruined from doors being opened and closed.

But we have solved all of the problems associated with large pocket doors and large sliding doors. When you use Sing Core products, you not only get a door that exceeds AWI standards in terms of warpage, you also get a door that’s guaranteed against warping for 50 years. Because of our special design methods, you will get a door that ensures proper functionality for decades.
Large Pocket Doors
The larger the door the bigger the challenge. Large pocket doors are more susceptible to warping. In order to function properly, they must be specially designed to resist warping. Larger doors must be specially constructed so that they are warp free on installation, as well as, over time.
Ultra High Strength – A large pocket door must be exceptionally strong to stand up to the most rigorous use. At Sing Core, we have revolutionized door strength with Peter Sing’s patented and patent pending technology that allows us to build doors that are very high strength, tested independently at over 660 PSI.
Super Light Weight – Up to 90% lighter than solid wood doors. Sing Core’s specially engineered core uses Peter Sing’s revolutionary design to bring a solid door strength to doors that allows for super light weight performance.
Straight/Warp Free – Specially designed stiffeners built into our doors make sure your doors are warp free over the long haul for better performance and function.
Structurally Stable – With our groundbreaking process, we can make doors that are built exactly to your specifications, and will not skew or shift over time. That way, you have a door that functions worry free for decades.
Eco-friendly – We support sustainability by using renewable, eco-friendly materials, so our products are better on the environment.
Guaranteed – When it comes to guarantees, no company on the market can do better. Our Sing Core Professional Panels are used for doors and other high end applications where stability and precision are of the utmost importance. All of our Sing Core Professional panels come with a whopping 50 Year Guarantee against warping, cracking, breaking, and skewing. Name one other company who can do this. Most companies don’t even offer a one year guarantee, but we can do this because our products have such a strong track record of performance.
No one can make panels as large, yet warp free like we can! You have our guarantee on that.
All of our products are 100% made in the USA. We take pride in supporting our country. That’s why you won’t find any products that aren’t made in America here. We also use high quality inputs that are sourced from local suppliers.
Door Skins
Our door system allows you to specify almost any skin for your doors. We specialize in high quality wood and metal doors. We have several options depending on your budget. Our paint grade ply option is our most economical option. Next is our hardwood veneer option. Mahogany, oak, walnut, and alder are popular. We also use 1/8″ wood stave on our highest end option, which gives you a solid wood appearance, but has our specially engineered core to maintain the light weight feature our doors are famous for. We also make metal doors. In our metal doors category, we specialize in cold rolled steel, but we also have a very popular aluminum option.
The Best Large Doors in the World
Built to last centuries, guaranteed for 50 years
Sing Core helps the best door companies, architects, and millworks build the best doors. Doors with Sing Core inside are built to last centuries, and they are guaranteed for 50 years.
We are proud to provide one of the longest lists of happy customers in the world. All of those customers now possess the most prestigious large size doors, which are guaranteed not to warp, bend, twist, or otherwise fail for 50 years.
The most successful, biggest, best, and most well-known door companies and millworks in America rely on Sing Core to provide them with the lightweight warp-free door cores that can support extreme over-sized doors, accommodate added materials (for sound proofing or fire rating), and offer strength ratings which are, pound for pound, stronger than steel.
Sing Core could not make such claims, unless we backed up our words with the highest performance results in the industry.

You can rest assured that your door with Sing Core inside will forever be the best investment you will make, with many years of sustained performance and sustainability.
Eco-friendly Sing Core is fully insulated for sound deadening and climate control.
The best doors in the world have Sing Core inside
When you’re looking at an extravagant large pivot door, sliding door, pocket door, or an elegant French door that towers over your head, remember that we don’t build doors.

We get calls everyday from homeowners wanting to add Sing Doors to their own homes, magnificent over-sized, large doors like the ones they see on our Website or in the most luxurious, over the top, locations all over the world, where Sing Core doors have been finished and installed. We do not do this, because we do not finish or install the doors. Only the best door companies in the world do this. You need to contact your favorite door company.
What we do is to supply the best millworks and door manufacturers, and the most prestigious architects in the United States with our handcrafted warp-free custom door blanks, ready to finish and install. Their expert finishing touches are a major part of why doors with Sing Core Inside look so beautiful. Without their expertise, Sing Core looks just like plain wood panel.

Homeowners who would like Sing Core doors in their own homes can contact an architect or millwork to order, finish, and install the doors for them.
What Makes Sing Core Doors Different?
We have the best patented and patent-pending methods to create the largest, most lightweight, most insulated Eco-friendly most doors that can be guaranteed not to warp, bend, twist, or otherwise fail for 50 years. Sing Core uses the only door manufacturing methods which can deliver these extreme results in the largest, most high precision modern doors featuring any contemporary material, because conventional large wood grain doors are prone to warping and a host of other problems, including excess weight.
How Do You Build a Sing Door?
If you’re a custom door manufacturer, you start with a Sing Core door blank and build your large pivot door, large sliding door, large pocket door, or huge French door just like you would any other door that you build. Having Sing Core warp-free door substrate inside your door makes all the difference in the world.


Our modular door system is by far the best in the world!

Before finishing

We aren’t able to show the final door because of copyright information.
One of a Kind Sing Doors
Keep in mind that no two doors with Sing Core inside are exactly the same (except in the case of large bulk door orders).
Every door with Sing Core inside features a uniquely engineered base door material which is manufactured to exacting standards taking into account all the details of the application associated with each door.
Attention to Detail
Attention to detail is the method of ensuring that each Sing Door can be guaranteed for flawless performance and longevity by taking into account where the door will reside when it is installed. What will the climate conditions be? Will it be installed inside, outdoors, or will it be a front door with one side exposed to the elements and the other to the structure’s interior?
Will your large exterior door be facing North, South, East, or West? What materials will be used on the exterior of the door? Will the surface material need to match other doors featured in the project?
Large over-sized wooden doors present their own set of challenges because every different species of wood grain has its own propensity to shift with changes environmental changes, like temperature and humidity. Sing Core inside as well as the stiffening and anti-warp configuration in the door substrate will have to be uniquely matched to any difference in door size.
Sing Core is not a one size fits all solution
That’s why you find Sing Doors featured inside the most expensive homes, commercial, and industrial locations in the United States and around the world.

It’s no easy job to make a warp-free large door, especially if it is door of enormous proportion which needs to remain dimensionally stable and warp-free over time, but as the most prestigious millworks and custom door manufacturers already know, Sing Core is the only way these results can be achieved.
Sing Core Solved the Problem
Sing Core has solved all of the problems associated with manufacturing large over-sized doors of all kinds. Door designers and engineers no longer have to deal with the problems of weight to strength ratios, or having to worry about how to transport, handle, or install large heavy doors.

Doors with Sing Core inside are not only lighter in weight than other solid core doors but they are high precision (hosting .006 inch tolerances) and stronger than steel (660 PSI or more) pound for pound.
How Can You Get a Sing Door?
All you have to do is to go to your favorite custom door manufacturer or local millwork and tell them what kind of door you want being sure to tell them you want,
“Sing Core inside your door.”
We will work with them hand-in-hand to design the perfect door to your specifications.

With Sing Core
You Can Have Your
Dream Door
Make your door dreams come true with Sing Core inside your door.
























































































































