True Flat Oversize Doors
Applications -> Building Components -> Doors -> True Flat Oversize Doors
True flat technology is based on expertise in building any big door that can be guaranteed true flat and stay flat. This composite science includes the proper proportions of Sing Core, aluminum and/or other materials and bonding agents based on your requirements or specifications.
One of the biggest challenges we see from designers and developers is that of the oversize door. Sure, anyone could make an oversize door, but can you make one that is true flat, maintaining structural integrity over long spans?
3 Types of Oversize Doors
There are three types of oversize door solutions, and in terms of meeting or exceeding the needs of the most high-end clients in the world. Our specialty is solving the problems associated with large oversize doors, while maintaining true flatness under extreme circumstances is unheard of, Sing Core helps us achieve the results that no one else can and remain lightweight and Eco-friendly, too.
1. Large Oversize Wood Door
The large oversize wood door has been a challenge for centuries because regardless of your expectations or requirements, the very nature of wood itself will provide additional challenges for both designer and the design. Not until the invention of Sing Core has there been a perfect solution for the issues associated with large oversize wood doors. See more information on Large Oversize Wood Doors.
2. Large Oversize Aluminum Door
For more extreme oversize solutions the Sing Aluminum Door is the better solution, especially when doors are expected to remain true flat under varying conditions. Aluminum has certain attributes that help us reach and exceed the requirements of the most demanding high-end clients. See more information on Large Oversize Aluminum Doors.
3. Large Oversize Wood/Aluminum Composite
The best solution for battling the issue of oversize without compromising the look, feel, beauty and elegance of solid wood is to call in the specialists at Sing Core to help design the perfect solution to your strictest concerns and requirements. See more information on Large Oversize Wood/Aluminum Composite.
4. Large Oversize FRP Composite Door
If your large oversize door will be facing extreme weather conditions, temperature variations, or some other kind of added stress that might be above what would be considered normal exposure.
In a hurry?
No problem. Sing Core can build your true-flat oversize doors for you in less than 3 days, even though our normal turnaround is 6 to 10 weeks.
Sing Core’s got your back.
We make you look good.
When your client demands only the best… You can confidently use Sing Core as your resource, because when it comes to oversize, true flat, nothing else even comes close.
Any look you desire…
Oversize Sing Core doors can achieve any exterior surface your customer desires, including (but not limited to) any wood species you customer desires, concrete, fiberglass, aluminum, stainless steel, fire-resistant Magnesium Oxide (MgO) Board, bullet-proof Kevlar, etc…
How do we do it?
Oversize and true flat is a challenge that we take on every day. We know the perfect combination of patented sing core and aluminum, to maintain light weight, superior strength and true flat construction.
This is how we build sustainable, high-end, true flat doors consistently and guaranteed.
- Large honeycomb sandwich door
- Insulated Sing sandwich door
- oversize lightweight high strength honeycomb door
- large oversize lightweight high strength sing sandwich door
- lightweight high strength large honeycomb door
Sing Timber
What is Sing Timber?
Sing Timber is a large mass of wood that can be milled to any specification. Its versatility is exemplified by wood shops who saw the large timber masses in more specific smaller planks as needed. Sing Timber can come in 12 inches wide by 12 inches tall and 96 inches in length, or you can get it already cut-to-order as Sing Hardwood.
Sing Timber can be broken down into any thickness and width, to create your own wood plank. You do not have to inventory all size of plank just by sawing Sing Timber to the desired thickness. You can slice the Sing Timber to any desired width, all you have to do is to seal the deal by gluing an exterior skin on the fresh sawed side to finish your new plank.
How Can I Use Sing Timber?
Sing Timber is manufactured with a heart of Sing Core, coverd with exterior skins on at least two sides form a large box like timber mass. It can be sawed horizontally, sanded and glued to form a smaller wood plank. It will create any dimensional wood and it cabn be covered any hardwood species, metal, plastic or even cement to create a new generation of ulitmate lightweight, high strength products.
Sing Timber is Better than Hardwood
Sing Timber’s Sing Core makes this the only hardwood material that is better than hardwood, for a integrous building material that is just a beautiful as solid natural hardwood with far superior structural integrity.
Sing Timber’s high-strength is due to Sing Core that is less expensive than solid hardwood. When Sing Timber is produced, the energy savings are impressive, as the actual production process uses less energy, man hours and equipment usage and produces little or no waste. Sing Timber is also sonstructed of low cost, renewable natural wood fiber and recycled EPS foam. Patented Sing Core is many times stronger than most of the core materials used in modern aircraft with much less weight and a fraction of the cost of core used in the aircraft industry. The cost can be less than 10% of the inefficient core used in aircraft design.
Compare other type of honeycomb or core materials , sing core is the only core physically and cost effective to build Sing timer which will turn to hundreds of different products for many industries.
How does Sing Timber work?
Simply stated, Sing Timber can be used as any regular lumber, cut to fit your appropriate application, as in shelving, Or you could add a solid wood edge to enforce the strength and add fastening anchor point for mechanical fastening.
When working with Sing Timber with a router, be certain to attach wood strips to the area to be routed, as the exterior wood surface along the face is minimal.
Sing Timber is versatile
Our most popular format in Sing Timber is the 4×12 in 8- and or 10- foot lengths. It can be used as a stand-alone post and/or beam as is, or (here’s the exciting part) can be turned into so many different products for multiple applications. For example…
Sing 4×12 lumber can be easily sliced into alternate widths and thicknesses to suit your needs. No need to make multiple trips to the store to pick up the lumber you need, simply slice Sing Timber 4x12s into the size that you want on-site; Perfect for the millworker or ambitious do-it-yourselfer.
By sawing the sandwich panel cross the Sing core to form two pc of sing sandwich without skin on one side than add new skin or add new solid wood to build a two sandwich panel or two Sing panels at different thickness. Sing Timber is easily broken down into any dimension wood plank or hardwood. Sing Timber can be easily sliced to substitute for standard 2×4 lumber.
How Do You Add Hardwood Stave?
It is easy to add a sardwood stave to any cut or sawed section of Sing Timber.
Firstly, all you have to do is to sand the surface of your freshly-cut exposed Sing Core section of your plank. Apply urethane glue or white glue to the smooth surface, then press. It’s that simple to turn a selection of Sing Timber into your own Sing Beam that is just as visually impressive as solid wood, but lighter weight and stronger than steel pound for pound.
Sing Timber is Strong and Straight
It is very hard to find straight hardwood without bowing, twisting or cracking. Solid hardwood is heavy, and hard to work with.
Sing Timber is an eco-friendly solid wood composite material with a patented Sing Core interior that results in lumber that is straight and flat, unlike any other building material on the planet.
Sing Timber is also available pre-cut as Sing Hardwood.
Sing Core Strength
The Strongest Core Makes the Strongest Door
Our panels have the extreme strength to support large amounts of weight with little to no flex.
Sing Core has become known for our ability to produce panels that are exceptionally strong, yet light weight, warp-free, and more versatile than any other panel on the market.
Our panels have the extreme strength to support large amounts of weight with little to no flex. There is no other door we know of that allows you to support multiple people without compromising the structure of the door.

The secret ingredient in any Sing Core product is the extreme strength of the core material. Peter Sing created the formula for the strongest and the straightest door core material which allows you to make panels that are super strong, super light weight, super, straight, visually appealing, and allows you to apply almost any skin, because the substrate is so structurally stable.
Outperforming the competition
No other lightweight building material compares to patented and patent pending Sing Core.
The core is a comprised of natural wood grain fiber arranged in a honeycomb pattern tightly supported by eco-friendly, recyclable EPS foam, sandwiched between to skins consisting of nearly any building material completing the torsion box design.
We have extensively tested doors made with Singtech against competing doors. The results were clear that our doors are able to withstand far more pressure compared to doors made by the competition.
This creates a structurally sound material that has superior strength. Sing Core has been independently studied at Washington State University and concluded to be stronger than steel in strength tests.
This grown man can actually stand in the middle of this 12 foot span with merely one support on each side. As you can see, there is practically zero flex on the panel with the weight of a full grown man.

This short video demonstrates the extreme strength and lightweight attributes of our eco-friendly, sustainable material.
It is an example of a lightweight, nearly indestructible, modular collapsible table, featuring a guest appearance by Inventor, Peter Sing, and also includes a short furniture demonstration.
The Patented Sing Core material can host any exterior surface, like (but not limited to) concrete, ceramic, fiberglass, aluminum, stainless steel, fire-resistant Magnesium Oxide (MgO) Board, bullet-proof Kevlar, etc.
Sing Core is your only choice when it comes to substrate that is strong, light in weight, warp free, offers sound deadening capability, and guaranteed warp free for 50 years. No other panel can do this!
Hammer Strength
Independently tested to be able to withstand force of up to 660 PSI, our panels are vying for the absolute top spot among the strongest of the strongest panels on the market.
When using a hammer on our doors to test them, you will see how strong they sound. Try it for yourself.
“Like solid steel.”
Peter Sing, Founder, Owner
Note: hitting our doors with hammers may void your guarantee.
Our Panels are Hand Made and Guaranteed
In this day of outsourcing and importing, very few products in America are truly hand made anymore. American products are well known for their exceptional quality and precision. Sing Core products are the pinnacle of that philosophy, bringing you top of the line panels that are 100% handmade in the USA, using materials that are nearly 100% sourced from America.

- Deflection test of a finished high pressure laminate trailer deck.
- Lightweight Strong Tables
Door Dealers and Door Manufacturers
WHOLESALE DOORS
Join the new revolution of door making that is changing how doors are made.
High quality doors made in USA can be affordable due the Sing Core door building technology.
There are limited certified Sing Core door manufacturing available; please contact us to secure your dealership of these leading edge fine door making methods.
NO EQUIPMENT NECESSARY
It doesn’t require any new machines, besides your existing basic door shop equipment. The only tool you need might be a cold press. If you don’t have that, we will help you get that piece in place, for free, as long as you are a Sing Core distributor.- GUARANTEED
Doors made of Sing Core are guaranteed true flat, lightweight, high strength, fully insulated and we offer 10 years structure guarantee for door made of Sing Core. This high level of confidence can be enjoyed by your end users also. - INCREASED PRODUCTION
Experience the high production with low labor cost if you are using Sing door building technology, You be able to compete with other major door manufacturers stateside, and even cheap import doors from overseas. - HIGHER PROFIT MARGINS
Higher production means less labor, which is the major cost of conventional door making. The lower cost of Sing core means higher profit margin. Of course, you do not have to market them as low priced doors, but you have the flexibility to reach high end, high ticket priced doors and/or affordable doors. - LOW COST RAW MATERIALS
Sing core purchases wood veneers (birch, maple, oak) by the truckload, wood staves of many different species, cut to size aluminum and urethane glue at discount prices and we pass these savings onto you in an effort to help you make your Sing Core door price more competitive.
If your shop is set up for door finishing or pre-hung doors, or if you have access of those two major elements, then all you need is the actual Sing Core or Sing Sandwich Panels to start your Sing door manufacturing business.
90% of Sing core that we product are used to build doors, even though Sing Core it has endless applications.
We will provide full details and pictures of processes used in building standard Sing doors measuring less than 4 ft x 8 ft in size, We assure you will be a top door maker just by seeing these pictures.
We’d be glad to build your large door plank if it is over 4 ft x 8 ft and up to 6 inch thick door which might be a challenge for regular certified Sing door manufacturers, and we ship to any location. It takes special set up and skills to build large, oversize doors and you can select from many skin choices, such as metal, wood, plywood, MDF, ceramic, concrete board, etc… Our special custom oversized doors can be built in one solid piece, if you’re not set up to manufacture super large doors.
We often time build door substrate (Plank) as tall as 37 ft in one piece; our large doors have shipped by container overseas and by train and truck from coast to coast.
With the Sing door building system you will easily be building your own regular size interior and exterior solid core doors, French doors. sliding doors, pocket doors, pivoted doors. raised panel doors, garage doors, carriage door, and more…
Now is time to make your own Sing doors. We guarantee you will be able to build any doors mentioned above at large quantity with less than handful of people.
This email or web page is designated for people in door business producing large quantities of doors with less than handful of people, contact us we will prove it for you.
Lightweight High Strength Eco Friendly Metal Pivot Doors
Lightweight High Strength Eco Friendly Metal Pivot Doors
When professionals seek out extraordinary, unique and/or oversized modern steel doors the most conscientious purveyors settle on a Sing Core metal pivot door.
While exquisitely masterful in their design, modern metal pivot doors present many challenges. The first challenge to overcome is that of excess weight. Due to the size of the door – if it is constructed simply of metal – the door is just not practical due to its excessive weight.
Extraordinary metal pivot door with a unique, bold and striking appearance
(see samples of contemporary metal pivot door finishes to the right…)
That has these characteristics:
- Lightweight
- High strength
- Eco-friendly
- Affordable
To combat this challenge door manufacturers seek out composite materials to incorporate into the design of the metal pivot door to deal with the heaviness of the door that causes a strain on the structural integrity of the frame, the hardware and project overall.
Solid steel pivot doors, while impressive, are just not practical, yet engineers have found ways to circumvent the obstacles in an effort to retain the appearance of being a solid steel pivot door.
The next challenge to overcome is that of strength. By compromising the metal pivot door’s integrity by not being constructed of solid metal, other cores are considered to reduce the weight of the metal pivot door.
Normal alterations include, using a lesser-strength metal core. Using a metal tube substrate or honeycomb core will match the structure of the metal door, but compromises the overall strength, while resulting in a metal pivot door that is still extremely overweight.
Engineers in search of a more lightweight solution, then consider composite materials to fill the core of your metal pivot door. These include natural solutions, like wood, or manufactured solutions, like foam. While wood products are an option, if solid, are still too heavy to result in a lighter weight solution, and still cannot compare to the strength of a solid steel door. And though foam is lightweight, it simply has no structural integrity and fails the test of strength altogether. Also, over time, these core components tend to lose their integrity, and rarely (if ever) produce an end product that is true flat.
Another consideration is that of excessive energy and harm to the environment expended in the creation of your metal pivot door. The process of creating a metal pivot door with metal interior components requires a lot of wasted energy consumption and highly-skilled laborers (welders) that not only makes the door non-eco-friendly, but results in a very expensive end product.
Sing Core can host any metal material, like stainless steel, iron, copper or aluminum and is the solution for all these considerations, providing the designer, contractor and end-user with all these benefits, and more…
Sing Core, when used as the substrate of your metal pivot door will not compromise the exterior metal beauty and magnificence of your door, which is the primary concern of this exciting, bold design choice.
LIGHTWEIGHT, HIGH-STRENGTH & TRUE FLAT
Sing Core is extremely lightweight, yet stronger than steel over any given spans and is the primary reason why it is selected over other types of composite core materials by high-end users; solving both the challenges of lightweight and high strength. It also creates a surface that is true flat, and retains its flatness over time. Every Sing Core metal pivot door comes with a 10 year warranty.
ECO-FRIENDLY, MADE IN THE USA
Sing Core is also eco-friendly. As Sing Core is manufactured, the process uses very little energy, utilizes renewable materials and produces little or no waste. Sing Core is also proudly manufactured in the USA.
Sing Core is economical to use. Using less-skilled labor to create Sing Core makes it an affordable option. Not to mention the reduction in costs of hardware and installation.
Don’t we all want a beautiful metal pivot door that is a bold design feature revered in modern architectural circles?
Shouldn’t yours be lightweight, have high strength and be earth-friendly?
Certainly, we would expect to pay more for this technology, but Sing Core is so affordable, think of what more good you could do for the world by saving costs of production and installation, let alone your bottom line.
Sing Core’s lightweight, high strength, eco-friendly metal pivot doors are the unequivocal answer for the discriminating modern pivot door designers today.
- lightweight high strength sing honeycomb door
- Oversize wood grain pivot doorlightweight
Refrigerator-Freezer Sliding Doors (Cold Storage)
Applications -> Building Components -> Doors -> Cold Storage
Sing Core excels in temperature-controlled environments. When it comes to eco-friendly building materials, Sing Core is the superior decision for discerning clients seeking unsurpassed strength (stronger than steel, pound for pound), lightweight, insulation and sustainability.
You will find our Sing Core components in the best walk-in coolers, refrigeration units and temperature-controlled environments. By using an eco-friendly, insulated component, like Sing Core, you not only save money by reducing energy costs, but you’re also doing your part to save the planet.
How can you improve your existing commercial refrigeration facility?
Certainly, there are the ceiling and wall applications, but those are assumed to be pre-existing… What is your floor made out of? If it’s not Sing Core, you’re losing energy through the floor. Sing Core floors are insulated and strong enough to withstand repeated traffic of forklifts. No other flooring component can compare. Put Sing Core on your floor today.
In new installations, when Sing Core is used as the flooring substrate, the benefits are exponential. Not only is the strength off-the-charts, but uncoupling floor, insulation and when covered with concrete, will not crack, like standard concrete floors.
REDUCE DAMAGE
Sing Core components are not easy to dent or damage in comparison to other traditional building materials.
Sing Core refrigeration doors are unparalleled in the industry and outlast other doors commonly used in temperature controlled environments, and come with a 10 year warranty!
Even refrigerated trucks and trailers can benefit from Sing Core. Sing Core floored trailers are more energy efficient and are stronger than traditional plywood floors. And those back doors on your refrigerated trucks that keep taking a beating? Why not install Sing Core doors that can take all the abuse that your transportation team can dish out.
Click Here fore more detail information on Sing Core Metal components.
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