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The Biggest Door Secret in the USA

The most highly regarded secret of the largest door manufacturers in the United States is that their most high-end doors have Sing Core inside.

 

These are among the most profitable privately held companies in the country, and there was a time when they avoided taking on the hard jobs; those jobs that included large doors over 7 ft tall. Why? Because of customer complaints and returns. They were better off excluding that part of the job, and let the individual millworks fight over trying to deliver those big doors.

Then, the millwork that won the job would have to deal with the complaints of having to replace or continually service large oversized doors that were bound to warp and fail periodically over the life of the door.

That is, until these dominant door manufactures learned the true secret; that Sing Core empowers them to create the high-end doors which allowed them to expand and evolve into even more profitable door companies in the USA.

Why?

Because they could now provide the largest and most unique door creations with the highest precision (+/- .006-in) and the best guarantee, bar none, thanks to inventor Peter Sing’s patented and patent pending large door building technologies.

50-Year Guarantee

Whether they pass the guarantee onto their end users or not (as their company policy might be only to provide a 1-year guarantee, if any at all, as large doors are normally exempt from any guarantee) the resulting doors with Sing’s core inside are guaranteed for 50-years.

For fifty years they are guaranteed not to warp, bend, twist, delaminate, or otherwise fail for 50 years.

Zero Complaints

For many years, these companies who use this highly guarded secret, they have not had a single complaint, completely eliminating rejects, returns, and replacement doors, all because when necessary, they make sure their high-end doors have Sing Core inside.

We have been told that before Sing Core they constantly had complaints and recalls for these specialized large doors because they would fail due to warping or door or structure being compromised due to materials used or heavy weight.

The reason?

Sing Core is the only way to do it (that’s what they say) and they are backed by the best guarantee in the door industry without fail.

So, we highly recommend that you look into this if you would like to be counted among the best high end millworks and door companies.

How to Build the Best Wood Stave, Veneer, and Paint Grade Doors

Click the following links to discover how to build the best:

Secrets of high-end door building photos

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Double French Doors Exterior

Exterior French doors are all the rage because if they’re done right, they offer superb safety and security while being Eco-friendly, lightweight, and fully insulated for increased sound deadening and climate control. The only way to create a sustainable lightweight pair of large double front doors that possess these double French doors exterior characteristics, which are also stronger than steel and guaranteed not to warp for 50 years, is with Sing Core inside.

Why is Sing Core so important for the most particular door afficionados in the world?

Granted doors with Sing Core inside may not be necessary for the masses, as standard doors available in standard door sizes are less expensive and adequate for normal everyday use. “Normal” doors move. The AWI standard for a normal 3-0 7-0 door is one-quarter-inch of movement, and the normal door industry from the door manufacturing companies, the hardware industry, and installation contractors all follow the guidelines of allowing a quarter-inch of movement without affecting normal door operation.

FRENCH DOORS

While you may think that glass is fairly stable, the frame which holds the glass (the French door) is subject to movement. It is the unforgiving glass which makes French doors more prone to failure, for if one corner is the slightest bit out of plum, the opposing diagonal corner will stick out like a sore thumb.

DOUBLE DOORS

Multiply the potential for failure times two, if you have two times the doors. A double door, two doors side by side, can potentially have uncooperative movement, even in normal-sized doors of 7 ft heights, double doors can have up to one-half inch of potential movement and still not be considered officially as warped doors, yet this exceeds the efficacy of the hardware, rendering the double doors inoperable.

EXTERIOR DOORS

To further complicate the problem with door movement over the life of a door which is more likely to move more often according to changes in the environment, and even more so, if one side of the door faces the structures interior and the other is exposed to the elements. This is the recipe for the perfect door disaster. That is why interior doors cannot be used as exterior doors. Exterior doors need to be made to different specifications to maintain the same “normal” quarter-inch movement allowed.

DOUBLE FRENCH DOORS EXTERIOR

As you may have guessed, by putting all these elements together in one set of doors, you have the makings of the greatest numbers of challenges associated with a single point of entry. Incredibly special attention should be in place when considering double French doors in an exterior front door application.

DOOR MATERIALS

While French doors may look like there is little at risk of compromising your egress point, there is much to take into consideration as each of the materials used in the construction of your exterior French doors has its own unique set of challenges as in integrates with the glass and its response to changes in environmental surroundings.

BIG DOOR PROBLEMS

The biggest problem with the door industry is with size. Normal movement of a door may be tolerable in a door that is 7 ft tall but once the door exceeds the 7 ft height, the rate of movement increases exponentially. The biggest problem with bigger doors is this increased movement which is referred to as door warp.

THE BIGGEST DOOR SOLUTION

Solving the problems associated with double French doors exterior is not a one-size-fits-all solution. Inventor Peter Sing’s patented and patent-pending door technologies are changing the way door are made around the world, and his True Flat Team is prepared to take on any unique and challenging combination of sizes, styles, and materials.

WHO TRUSTS THE SING SOLUTION?

The largest door companies in America trust Sing Core with their modern double front door solutions to provide their customers with the best in high-end double French doors exterior or interior, especially if they are very large in size, and they are backed by the best guarantee in the door industry: 50-years of flawless service.

50-YEAR GUARANTEE

Double front doors made with Sing Core inside can be guaranteed not to warp, bend, twist, or otherwise fail for 50 years, including full structure warranty and guaranteed not to delaminate. 50 years! No other door company can do that.

SUSTAINABILITY

No other lightweight Eco-friendly exterior double door promises flawless longevity like Sing Core, and while it is lighter in weight than other solid core doors, Sing’s patented core is high precision (+/- .0006-in. tolerance) and stronger than steel pound for pound.

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Hollywood News

End Your Warped Door Nightmare

A predominant actor has sold his $40 million dollar home and is moving across the continent to a penthouse suite. He loves the flat but the first thing he noticed was that the new 8 ft. tall doors were already misaligned and starting to warp. Unacceptable to this multiple academy award nominated actor whose star can be found on the walk of fame.

Sing Core to the Rescue!

All these doors have to go!” Sing Core is helping to create replacement doors that will aesthetically match the previous doors. “Admittedly,” says inventor Peter Sing, “we usually only get called on by the rich and famous to do big doors. I mean, 16 foot or taller doors. But in this case, we were summoned for 8 ft. tall replacement doors.”

As everyone in the door industry knows the standard 7 ft. tall door is the standard door height, which is determined by its warpability. According to AWI standards a ¼” warp is allowable and considered normal in a 3-0 7-0 door, and all door hardware is manufactured to take this variance into consideration.

Not so with doors that have Sing’s patented core technologies embedded inside. These doors are

Guaranteed Not to Warp for 50 Years!

Why do the biggest and best door companies, millworks, and high-end custom door makers seek out Sing Core?

Not only is it,

“The only way to build a large warp-free door,”

according to Sing’s long list of discriminating clienteles, but you also get a lengthy list of advantages from having a door with Sing Core inside. Such as,

Eco-friendly – Lightweight – High Strength

Fully Insulated – Sound Deadening – Increased Climate Control

Impact Resistant – Weatherproof – Sustainable

Even though they are so lightweight, only 2 to 3 lbs. per square foot, they are stronger than steel pound for pound.

As much as you might doubt Sing’s ability to deliver the goods when it comes to a 50-year warp-free guarantee? You know, if it wasn’t true, that would be the end of Sing Core, and for 20 years, the most important door makers of the most high end doors in the world depend on the patented Sing Core technology to do it. And to this day, they say,

“It’s the only way to do it.”

Shouldn’t you be doing it too?

Do You Have a Warped Door Story?

Sing Core has been helping the high-end door builders make warp-free super large doors for many years, and to date, not even one of them has warped.

One of the largest high-end door companies has been known to say,

“Since we started ordering large door panels from Sing Core, we have never had any problems with doors warping.”

Sing Core has endless applications… See Here

All doors made with Sing Core are structure guaranteed for 50 years, yet lightweight, 2 to 3 lbs. per square foot average, but if you try to breach the door, you will know it is solid as a rock, yet packed with insulation and sound deadening material.

Please tell your friends, especially if they are architects, millworkers, door manufacturers, or general contractors. They will thank you for introducing them to Sing Core.

Life is Short

The best you can do is to hope to leave something good behind, to try to make the world a little bit better than before you came, for your family, their families and the world at large.

Inventor Peter Sing has made his mark by introducing his patented invention of Sing Core to us which is changing the way big doors are made all around the world. One day the world will know that using Sing’s Core is the only way to build an Eco-friendly large door that will not warp.

The nearly unlimited possibilities of Sing Core boggles the mind, in the endless applications where Sing’s lightweight, true flat building material that is stronger than steel pound for pound could be used for anything from cutting boards, to entire homes built of Sing Core.

But there is no doubt, that Mr. Sing enables the biggest and best door companies to build the biggest and best doors in the world that can be guaranteed to remain

Warp-free for 50 Years

No other company can match Sing’s unparalleled high precision, performance, and longevity, guaranteed for 50 years.

See for yourself: https://www.pinterest.com/SingCoreOfficial

That’s what Sing’s clients say,

“There’s no other way to do it.”

And Peter Sing could not say these things about his true flat doors it if they were not true.

This is Peter’s legacy: To change the way things are made to last forever (or 50 years, whichever comes first).

No Other Way

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Extra Wide Front Door

The inventor of patented Sing Core invites anyone to challenge his claim to fame being,

“The only way to build an extra wide front door that does not warp.”

Peter Sing’s revolutionary lightweight high strength extra wide front door core is what makes it possible for all the biggest and best door companies in the world, millworks, and specialty custom architectural door builders to build extra wide front doors that can be guaranteed not to warp for 50 years.

What?

Peter Sing, the inventor of patented Sing Core and many patent pending anti-warp and composite technologies associated with the creation of extremely large door blanks (up to 50 ft. or more) which are high tolerance (within +/- .006 in.) and dead flat.

Sing’s True Flat Team reviews every extra wide front door spec and assists in the engineering of a door blank that can stay straight and true for 50 years.

Finally, thanks to Sing’s door building technologies, the biggest and best door companies, millworks, and custom door manufacturers are able to build enormous extra wide doors of nearly any material, which would otherwise be highly problematic to use, like solid wood for example, that are Eco-friendly and will not warp.

Plus, there’s more…

If your wide front door has Sing’s core inside the result will be a door which possesses these exciting characteristics:

  1. Eco-friendly
    1. Responsible use of natural materials
    2. Includes recycled materials
    3. Long lifespan
    4. High sustainability
    5. Reusable/easy to repurpose
  2. Lightweight
    1. Weighing in at a fraction of other solid core doors
    2. Less expensive hardware (based on door weight)
    3. Easy and less expensive to ship, handle, and install
    4. Less wear and tear on hardware and structure
    5. Fewer door-related injuries
  3. High strength
    1. Stronger than steel pound for pound
    2. More dimensionally stable
    3. Impact resistant
    4. Will not cup, bend, or twist
    5. Can span unsupported distances without fail
  4. Fully insulated
    1. Built-in insulation provides sound deadening
    2. Excellent separation between adjoining spaces
    3. Increased climate control
    4. Provides safety and security from the elements
  5. Warp-free
    1. Perfectly flat
    2. Meets or exceeds AWI standards
    3. Patented and patent pending warp prevention technologies
    4. Sing Core is the only way to do it, guaranteed
  6. Any Material
    1. Natural wood grain, including exotic woods subject to availability
    2. Aluminum
    3. Cement/concrete
    4. Fiberglass/FRP
    5. HPL (high pressure laminate)
    6. Laminates (including Formica, Masonite, etc.)
    7. Other Metals
    8. Steel (cold rolled steel, hot rolled steel, galvanized, stainless)
    9. Any other flat building material to specs
  7. 50-year Guarantee
    1. Warp-free guarantee
    2. Full structure guarantee
    3. Includes lamination guarantee
    4. Only doors with Sing Core inside can be guaranteed 50 years

So, if you’re looking for a wide entry door (“How wide?” you might ask? Up to 50 ft. wide or more), then you will be miles ahead with a low maintenance long life extra wide front door with Sing Core inside.

For some people, a door that is 42 inches wide or 60 x 80 front doors are considered as extra wide front doors, but here at Sing Core, our wide entry doors start at 48-inches and go up to 600-inches or more, so handling your wide front door is not going to be a problem for Sing Core.

How to Build an Extra Wide Front Door

You start with Sing’s patented hybrid torsion box composite wide door core, which is made of natural vertical grain wood fiber metric structure grids filled wall to wall with rigid foam sandwiched between two structure skins to complete the torsion box.

This creates an impervious warp-free surface to which you may apply nearly any flat building material to your specs to create any result you care to achieve.

All the biggest and best door companies, millworks, and large custom door manufacturers know this is the,

“Only way to build a large door that will not fail.”

Only the best extra wide contemporary front doors are made with Sing Core, and yours should be too, especially if it is an extra wide contemporary front door, to make sure you don’t get stuck having to repeatedly fix your door over time, saving you the headaches and costly maintenance costs.

Sing Core is the only way.

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Sacred Horizontal Grain Wooden Doors

Designate Sacred Space

12 ft tall horizontal grain walnut door

A wooden door can be used to designate sacred space. By orienting the wood grain horizontally instead of vertically, a clear separation between two differing domains is indicated. For instance, the “world” may exist on the outside of the door, while the inside space on the other side of the door is deemed as separate, protected, or sacred.

Feng Shui enthusiasts are attracted to wooden doors with Sing Core inside as entry doors, for the strongest doors are those which also separate two domains, that of the world from the structure’s interior, in a sense, keeping unwanted energies from intruding upon inhabitants.

This idea of preserving or honoring personal or sacred space is a concept which is fully embraced by inventor Peter Sing and his patented Sing Core technologies. This combination of horizontal oriented wood grain, superior strength, and sound deadening capabilities in a front door adds to the creation of a respectful barrier.

This method of creating separation is powerful and one can find clues to support the preferential dictates of such a door. Buddhist and Japanese barriers known as “kekkai” are low profile horizontal markers which indicate a barrier which should not be trespassed upon, and to do so dishonors those who have set aside the space on the other side of the maker as consecrated.

You might see these honorable markers on the ground, so as not to obstruct the view, such as a horizontally placed length of bamboo, rope, chain, or other material placed in this manner. In Japan, these barriers are more effective than fencing-off an area, without disturbing the symbiotic resonance of the surrounding environment.

The onus is on you to respect such a discreet boundary and to honor it yourself, just as evil spirits may. This horizontal kekkai may also mark an area as “private property.” Alternatively, a stone may be placed in the center of a walkway (this is referred to as a sekimori ishi) or garden path indicating that you are unwelcomed to pass into this particular area.

In some traditions, chopsticks are placed horizontally between the meal and the recipient of the meal as a boundary separating the host (he or she who would partake of the meal) from the sacred gift (the food).

In this way, a horizontal wood grain door with Sing Core inside fully supports these philosophies and are increasingly being found in spiritual applications in temples and other sacred spaces.

An added benefit of using horizontal wood grain on your large entry door, is that it is a responsible use of natural resources, as a very tall door (over 10 ft tall) would require special considerations as very long lengths of natural wood are often difficult to find and might require the sacrifice of an otherwise healthy, growing tree. Plus, as custom door builders know, solid wood will move, warp, and crack, unless the door has Sing Core inside.

16 ft. warp-free horizontal grain teak front entry door

For exterior doors, it is generally advised to use a little more material because wood veneer is too thin to offer much protection, is easily damaged, and may be difficult to repair. While a layer of wood (referred to as wood stave) which is between 1/8th of an inch and 1/4-inch is about perfect for any door with Sing Core inside. You might be surprised to discover that 1/8th-inch wood stave is far more dimensionally stable and looks like solid wood.

Exterior doors made with Sing Core inside are guaranteed not to warp, bend, twist, or otherwise fail for fifty years. No other door can offer such a guarantee, further sustainably honoring you and your sacred space.

3x warp-free horizontal grain hemlock doors 14 ft tall

Horizontal oriented wood grain honors the sacredness of Mother Nature’s gift of wood, maximizing its benefits to the world, while offering a sacred protection adding to safety, security, and peace of mind to you and yours. Elements difficult to find in any ordinary large entry door.

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Solid Core Door Blanks

The new generation of solid core door blanks delivering high precision results for the most sustainable doors of any size, even exceptionally large doors, which are lightweight, stronger than steel, and guaranteed to remain warp-free for 50 years.

Inventor Peter Sing supplies the biggest and best door companies with his patented and patent pending warp-free door solid core door blanks which enables them to deliver what are commonly referred to as “the best doors in the world” to their clients who demand the top of the line for their homes and projects.

Sing’s solid core door blanks are unlike any other solid core door blank thanks to Sing’s inventions combined with the expertise of his True Flat Team which works hand in hand with architects, door companies, engineers, millworks, and custom door manufacturers, to achieve stellar results which are impossible to do any other way.

Sing’s clientele is often overheard gladly admitting that,

“There is just no other way to do it.”

To make a large door lightweight, so strong, that is fully insulated for sound deadening and climate control, and be guaranteed not to warp for 50 years, is inconceivable by any other known method besides using Sing’s unique inventions, science, and technology.

Until now, traditional solid core wood doors were destined to be heavy, especially if large in size, and most likely to fail not long after installation. Wood solid core doors in particular because, well, wood’s natural inclination, being a natural product that moves in response to changes in the environment in which it resides.

That’s why it is standard practice for door companies to exclude large oversized doors from the standard warranty which covers the rest of the door schedule. Large solid core wood doors are generally included on a waiver which exonerates the designers, creators, contractors, installers, and anyone else associated with those big, heavy doors from any responsibility for the door’s performance whatsoever.

Because until now, there was no way to make commercial grade solid core wood doors that had such high performance. For instance, a solid core wood slab door with Sing Core inside,

Moisture content is the main enemy for any large solid core MDF door slab, so proceed with caution when approaching the integration of any MDF door where moisture may be present. Areas to be avoided include bathrooms, laundry rooms, and kitchens, and MDF is not recommended for use as exterior doors.

In terms of high precision, Sing’s unfinished solid core door are straight and consisted with .006-inch tolerance and 660 PSI for strength. Its statistical data, like this, which makes Sing’s solid door core break the boundaries set by traditional building methods.

The most popular wood solid core prehung interior doors are found at Home Depot and Lowes Home Improvement, though you will not find solid core door blanks with Sing Core inside at those locations because Sing Core does not actually make doors. But what they do make is the only Eco-friendly lightweight solid core door blanks that will not warp, and Sing’s factory also provides a premiere unfinished solid core veneer composite door slab that outperforms anything else available.

At present, the Sing Core factory does not create any solid core door prehung but they do provide their exclusive warp-free solid core door blanks to the very best high-end door companies, millworks, and large custom door manufacturers in the world.

That might leave you asking,

How can I get a Sing Core door?

Even though you can not just run down to your local Home Depot or Lowes Home Improvement Warehouse and pick one up, its not as difficult as you might think. If you are working with an architect, he can simply spec a door “with Sing Core inside,” then Sing works in concert with the entire team to bring your dream door(s) to life.

If you are working with a local millwork, they will order up the solid core exterior wood door blanks that they need to get the job done and take it from there.

Your local door company is the best way to get a Sing solid core door prehung, because in most cases that is what they do. Unless they are a highly custom door manufacturer, most door companies get their doors made off-site (most of those doors are not made in the USA), then they (if necessary) finish and prehang them on site.

In this case, the door company will order up whatever Sing solid core door slab they need, finish, and hang the door, then you can pick it up, or you can arrange for door installation at your desired location.

The best way to get to the next level in the world’s best solid core door blanks by Sing Core, Submit a Price Quote Request. You will be assigned to a salesperson who can help you work out all the details of helping bring your dream door come to life.

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We Will Make It Together

Times are tough in the unprecedented times, as we all try to figure out what we are going to do to continue to get things done during the current pandemic.

9 ft tall warp-free walnut veneer doors

We are proud to be able to relieve the burden our clients might experience having to deal with those difficult projects, especially those concerned with large doors which could be either too heavy to be practical or too flimsy to be effective, and large quantity door orders.

Warp-free walnut pivot door 50 yr guarantee

We are grateful to serve you in helping to create doors of enormous size which can be guaranteed not to warp, bend twist, or otherwise fail for 50 years, as well as door companies with large door runs, which cannot be filled by import doors at the moment.

We can help you fill those large quantity door orders with rapid turnaround Made in USA doors at a price which will enable you to finish those jobs without having to wait for offshore delivery channels to reopen. We’re doing it for our other clients, we can do it for you, too.

We’re open, working hard to ensure all orders are shipped on time, and empowering you to do what you do best, in any way we can.

Together we can make it through this crisis.

If you know somebody, or you yourself, need the solution for all your big door problems, we can help you achieve your goals with our patented and patent pending lightweight high-strength warp-free solution.

Our exclusive solutions have a warranty that is unmatched. In an industry where even a 2-year warranty is desirable, our 50-year warp-free guarantee is unprecedented.

Please keep in mind that we also fabricate standard sized doors in large quantities. We can help your production capabilities when you win those large door orders without having to bear the costs of handling, such as a production run on your own.

Click here to see types of doors and skins.

We make requesting an estimate simple, Get a price quote, which includes free instant 3D rendering of your door and shop drawing, today.

Please visit our web site to see what we do that can help you.

We are not a door manufacturer, but the best door companies in the world use our patented and patent pending Sing panels to build the best doors.

Sing Core is the only way to build doors which will never fail, and that is why the largest door companies in the world trust us for their oversized door building solutions.

Visit Sing Core, where there are pictures or all types of doors, all kinds of designs, and of course, size is not limited. We can help you build the largest doors to remain warp-free for 50 years, better than AWI standards.

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Wooden Door

See: How to Build The Perfect 16 ft. Tall White Oak Door

Sing wooden doors make the best wooden doors in the United States and around the world. No other Eco-friendly lightweight wooden door core is stronger. Weighing in at a fraction of the weight of solid wood door core, patented Sing Core is stronger than steel pound for pound (660 PSI). This is the only way to make a large oversized wooden door that can be guaranteed not to warp, bend twist or otherwise fail for 50 years.

Big Oak Doors

Here’s an example of a pair of 10 x 12 big oak doors, 3-inches thick. These are made using solid oak wood stave (or planks) trimmed thin at 1/8-inch and applied to patented Sing Core engineered substrate.

10×12 ft 3″ thick warp-free 1/8″ oak 520 lbs

The face staves or planks are expertly applied and nearly seamless. If done any other way, these face staves will separate or crack due to movement of the surface area, but because Sing Core does not move, this surface area will remain in pristine condition thanks to inventor Peter Sing’s warp-free contribution to the large wooden door industry.

Close up example of oak wood stave (plank) lamination

The secret to making a big oak door, like this, look like a solid oak door is to use matching oak grain stiles and rails for framing. So instead of edge-banding on the panel sides, you see solid oak wood edges which gives this the impression of being a big solid oak wood door.

extreme close up of corner revealing solid oak stile and rail frame

Choose any available type of wood for your wooden doors with Sing Core inside, such as,

Wood Stave vs. Wood Ply

Wood stave doors can be very costly to make, especially if you’re looking for a lightweight high strength solution for a warp-free guarantee for 50 years. Using Sing Core inside your wood stave door featuring wood planks from 1/8-inch to 1/2-inch will create more potential for warp due to the nature of natural wood grain. This is the beauty of the more economical wood ply option for building your wood door. Wood ply is far less expensive and has alternating grain orientation which also helps to keep the door straight. Wood plywood is just like any other plywood except for its featuring a particular wood grain predominantly on the surface, and it offers far more strength and reparability over time than a less expensive wood veneer. So, if you’re looking to attain similar visual results of a solid wood door at a fraction of a price you might consider having Sing Core inside your wood plywood door. Be certain to specify what type of natural wood plywood your want, if it is available, you can save thousands of dollars on your beautiful wood door. The most popular wood plywood features woods such as white oak plywood, maple plywood, oak plywood, mahogany plywood, walnut plywood, Douglas fir plywood, knotty pine plywood, and birch plywood just to name a few.

FYI See: Patented Sing Paint Grade Doors

 

Wood Stave

AB-Plywood-Trimmed-Skin

American Plywood

Plywood-Panel-Mahogany-Hard Wood Beautiful Skin

Solid Veneer

 

Black Oak Doors

Cedar Doors

Maple Doors

Mahogany Door

Oak Doors

Walnut Doors

Sing Core Wooden Doors

Each professional Sing wooden door can be guaranteed to remain warp-free for 50 years, including a full structure warranty. This is why Sing Core wood doors are making such a huge impact on the door industry across the USA and abroad.

Any type or style of wood door can be made with Sing Core inside, such as exterior wooden doors, wooden barn doors, interior wood doors, wooden sliding patio doors, wood sliding room dividers, wooden French doors, wood stile and rail doors, just to name a few.

Patented Eco-friendly wooden doors with Sing Core inside are proudly made in the USA, using sustainable manufacturing methods using less energy, with responsible use of recycled and renewable resources, including natural wood fiber, producing little or no waste or loss of energy, leaving a negligible carbon footprint.

There is just no other way to make 20 ft. tall wooden doors that will not warp. Wood is a very difficult resource to use for anything over 7 ft. tall because of its tendency to move, especially in exterior wood doors. For instance a wood door that faces the elements on one side and the structure’s interior on the other is going to warp. That’s why no door company guarantees warp resistance of a wooden door for more than one year, that is, unless it has patented Sing Core inside.

So, how can you get wood doors with Sing Core inside? It’s easy, just go to your favorite architect, door manufacturer, mill work, or custom door company, and tell them what size door you want and be sure to ask for, “Sing Core inside.” We cannot sell or ship Sing Core doors directly to consumers or do it yourselfers, as we are the manufacturer supplying Sing Core door core only to door manufacturers and builders of custom doors.

 

Large Wooden Doors

Large oversized wooden doors are the greatest hurdle facing architects and designers, because though there is little more impressive than a huge wooden door to catch your attention, so the bigger the better, but then there’s the issue with warping, which is a constant struggle for the owner to secure regular maintenance of such a beautiful wood door, likely at least seasonally.

Thanks to having Sing Core inside, you will never have to worry about warping wood doors again. While they are built to last for centuries, each professionally guaranteed Sing wooden door can be non-warping and include a full structure warranty for 50 years. No other Eco-friendly, lightweight, high strength wood door can have such a guarantee in the world.

And what if you’re looking to build a large door out of a material other than a natural wood grain? No problem, your doors could be made out of any available flat building material, such as aluminum doors, cement, concrete, fiberglass (FRP), glass, HPL, Kevlar, LVL, MDF, steel (cold rolled steel, steel diamond plate, galvanized steel, hot rolled steel, etc.) as well as the only unbreakable mirror doors, just to name a few.

Wooden Door Gallery

 

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Wooden Doors

The most popular application for wooden doors is accentuated by their prevalence as interior doors. There are a number of reasons why it is common for wood doors to be used as interior doors, the number one reason is that as exterior doors, wood front doors are less stable due to the nature of wood grain to move resulting in warped doors. But not anymore, thanks to warp-free wooden doors by Sing Core.

The two biggest problems with big wooden doors are the (1) heavy weight and (2) tendency of wood to move due to changes in the environment leading to warped doors. Inventor Peter Sing has introduced to and made available his patented and patent-pending warp-free technologies to all industries. The industry which his technological breakthroughs have had the most impact is on the door and window industry.

Known the world over for his contribution to his warp-free wood and the strongest metal in the world which are both lightweight and Eco-friendly, the biggest and best door companies, millworks, and high end custom wooden door manufacturers are seeking out Sing’s emerging lightweight high strength core solutions to enable them to build doors that were either impractical or impossible to build without inviting a host of complications and problems over time.

Door engineers and contractors who would pass on even considering building large wooden doors would pass on that part of the project due to the exposure of not being able to offer a warranty on a large wooden door that would warp not long after installation.

Sing’s core helps empower purveyors of doors to boldly and confidently embrace the idea of providing large wood doors which Sing backs up with his

50-Year Warp-free Wooden Door Guarantee

This is not a misprint or typographical error. Peter Sing personally guarantees each large oversized wooden door that he helps his clients to build to remain warp-free for 50 years. That is to say that if your door has Sing Core inside, it will not warp, bend, twist, or otherwise fail (including lamination) for a full 50 years.

This is a guarantee which is unheard of amidst the door industry, as most wooden doors are not covered by any guarantee, and for those that are, the standard is 1 year and could include a limited warranty of up to 10 years. There is only one way to build a lightweight large wooden door that will not warp, and to do so you must have Sing Core inside.

How to Build Warp-free Wooden Doors

The secret behind Sing’s ability to build a warp-free door is not as easy as it sounds, as he has a team of warp-free wooden door engineers who he refers to as his True Flat Team which reviews every door, its size and active components such as hardware and surface material, as well as its location within the project or structure, and on the planet earth. The True Flat Team helps to design the perfect substructure to keep the door from warping, so every wooden door is a one-off individual work of art.

1. Hybrid Solid Core

Basically, Sing’s patented hybrid solid core includes a torsion box grid, where the grid size is relatively small, two to three inches, which is constructed of vertical grain wood fiber (many times stronger than standard horizontal grain). Each void of the torsion box is filled with a rigid (recycled) foam insert, and this reinforced grid structure is cold-pressed between two stress skins using formaldehyde-free adhesive. This is Sing’s base material, which is the basis of the core used within his strongest metal in the world.

2. Anti-wood-warp Technologies

Depending on the size of the wooden door, the wood species (and its thickness) hosted on the wood door’s exterior, the application, hardware, and location of the door, additional anti-warp and strengthening material may need to be added to the warp-free substrate to compensate for the additional concerns and challenges. Note that types of door hardware, such as side hinge, pivot hinge, or sliding door hardware, all have different inner configurations, specially designed for each application.

3. Solid Wood Doors

For that “looks like solid wood” effect for which Sing is renowned, solid wood edges matching the natural wood grain featured as the door’s surface material are added to give the appearance of solid wood doors when finished. You can see why doors built with the solid wood edges are featured at the top of the World Trade Center.

4. Apply Surface Natural Wood Grain Material

Sing’s factory has a unique expertise in the area of applying different surface materials to his warp-free substrate though since he supplies his patented products to door companies and millworks, more than half of them ship without door skins, and these are applied at the door company’s factory or in the millwork’s shop. Some will feature solid wood stave planks, others will host various wood veneers.

As is the rule, Sing’s factory does not finish the doors, apply hardware, or pre-hang the doors. This is all done by the companies that make Sing’s door look so magnificent in the field.

What to Expect from Sing’s Wooden Doors

When your wooden door with Sing Core inside is completed and installed you can expect to enjoy all the benefits of owning such a door.

1. Eco-friendly 2. Increased sustainability
3. lightweight 4. High strength
5. Dimensional stability 6. Warp-free technology
7. Sound dampening 8. Increased climate control
9. Save on maintenance cost 10. 50-year no-fail guarantee

You will agree, just as all the other door companies now know,

“There’s no other way to do it.”

Get a free drawing and Price Quote today.