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Oversized Front Door

When it comes to big doors, no one does it better than Sing Core. Who else can make an Eco-friendly oversized front door that is made in the USA, fully insulated, lightweight, stronger than steel pound for pound, and guaranteed not to warp or fail for 50 years? Nobody, unless the door in question has “Sing Core inside.”

Front doors are not only the first thing that you see when approaching a structure, but they have a unique challenge as one side of the front door faces the interior and the other faces the exterior. This is the perfect storm for the warping of exterior doors.

A warped entry door is a problem because it is a huge security issue if the front door cannot be secured because the locking mechanism does not line up correctly. This can also be a problem for climate control for certain times of the year when weather can be extreme in some geographic locations.

Sing Core oversized front doors could be made of any available flat building material but the most problematic entry doors are wooden front doors. Wooden front doors cause the most challenge for warp due to the nature of the natural wood grain to move as it adjusts to changes in the surrounding environment.

Sing Core’s ability to provide a warp-free solution for this type of elegant oversized front door includes the use of patented and patent-pending technologies which are keenly created and suited for the particular door, taking into consideration the height of the door, the width and thickness. Other factors include the wood species used and how much of the wood is featured on the exterior wood doors, as well as taking into consideration the overall seasonal climate where the door is installed, which direction the door is facing, and whether the door is 100% exposed, or not.

All these things factor into the unique creation of a warp-free oversized front door substrate which considers all the aspects of the door. This is a process which is unique only to Sing Core and it’s what makes each door with a 50-year warp-free guarantee an individual work of art.

Many of the best and largest door manufacturers call on Sing Core to assist them in building an oversize front door of integrity and long-lasting performance. Prior to working with Sing Core, many of the largest companies would just refuse to make the big front doors because they knew these big entry doors were going to be problematic.

Custom door manufacturers and the most proficient millwork companies and craftsmen might build out the door to your specifications, but no one would be willing to put their name on the bill more than once, guaranteeing any degree of well-maintained straightness, as prior top Sing Core, this was just not possible. You might be compelled to sign your name the first time due to your level of confidence in your abilities, but after the first time, you’d use the waiver.

Contractors routinely excluded the big front entry doors from their warranty rider(s) for the same reason. It’s like, “if you want a big door, then fine. We’ll find someone to build it for you, but good luck trying to keep it straight.” If you want a big door, you can have it, but the regular maintenance for large wooden front doors is on you, and you can count on it.

weatherproof exterior oversized doors 50 year guarantee

Making a large Eco-friendly, lightweight, high strength door that is fully insulated and stronger than steel pound for pound, just cannot be done without Sing Core.

Do you want more from your door?

How about

• 10 ft garage door oversized doorsEco-friendly
• Any size
• Any material
• Lightweight
• High strength
• Fully insulated
• Use indoor or outdoor
• 50-year Warp-free guarantee
• Structure guarantee
• Made in the USA

The sky is the limit (and beyond, if you are our client, like NASA) as we build your architectural oversize front door to your specifications. Any size, any light cut out, any material, such as aluminum, blackboard, brick, cement, cold-rolled steel, concrete, diamond plate steel, fiberglass, FRP, galvanized steel, glass, HPL, Kevlar, LVL, magnetic board, MDO, stainless steel, whiteboard, even the most difficult material to keep perfectly straight over long spans:

Natural wooden front doors

Sing Core can provide the biggest and best millworks and custom door manufacturers with a superior warp-free oversized front door made of any available natural wood species, such as alder, ash, birch, cedar, cherry, cypress, dogwood, Douglas fir, elm, eucalyptus, fir, hemlock, hickory, mahogany, maple, oak, okoume, pine, poplar, spruce, or walnut, just to name a few.

All perfectly flat and guaranteed warp-free for 50 years.

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Temporary Wall Panels

Temporary wall panels are an excellent way to take charge and become the master of your space of any size, or any environment. If you have large open spaces, these can easily be redesigned or divided in separate spaces quickly and easily using insulated Sing temporary wall panels.

For obvious reasons, inventor Peter Sing’s temporary wall panels are found mostly in the Greater New York area and are used primarily as insulated room dividers. Space is a premium commodity in this part of the country and Sing Core helps make the best use of available space.

Temporary wall panels can be a little tricky, so if you’re not the owner of the property, you need to be sure to check with the owner to see if it’s okay to erect wall dividers in your space, also there may be local building codes that may prevent you from using a room separator.

For those who are creative enough to exploit a loophole, while there may be local code restrictions for room partitions, or hanging room dividers, furniture is unrestricted. Many people are using Sing temporary wall panels as the backside of a bookcase by installing bookshelves on one side of the temporary wall panels. Now you have a bookcase, which is a piece of furniture which sits on the floor, and is not considered a wall, as long as it is not anchored to the ceiling.

That’s how you find Sing temporary wall panels installed in many buildings in the New York area providing more privacy and maximized use of available space as a DIY room divider bookcase built by the avid do-it-yourselfer, though some companies who specialize in New York room dividers, use Sing Core inside their temporary walls.

And if you have the bandwidth, in terms of excess wall space on either side of your opening, sliding room dividers, are an excellent way to open a full space and separate it into divisible space instantly. The sliding room dividers are always in place as the wall slides open or close on demand, perfect for a permanent installation. You see these in retail and entertainment space establishments around the New York area.

As portable room dividers, the most popular configuration in office settings in and around New York state appears to be hanging room dividers, where room dividers are hung side by side from commonly used and easily obtainable barn door hardware. Because temporary wall panels with Sing Core inside are so lightweight in comparison to other solid door core doors. The entire door, even outfitted with barn door hardware, can easily set in place or removed altogether by one person.

When not in use, they can be stored out of the way, to the side, or off-site. Then easily snapped into place and slidden back and forth to your heart’s content.

Then there are folding room dividers which consist of bi fold doors which are hinged together and fold atop each other to one side.

For years, Sing Core has been at the top of the top in the field of doors of magnitude, especially Pivot Doors, Sliding Doors, Pocket Doors, and Metal Doors of enormous size. Now you can have this same high-ranking technology inside your temporary wall panels, not just in New York, where we are very popular, but even in your hometown.

We serve the world with the only Eco-friendly insulated, lightweight, and high strength solutions built to last centuries without fail, but can be guaranteed for 50 years.

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Wooden Sliding Doors that Don’t Warp

When you need a large door that doesn’t warp, especially a sliding door made of wood, then look to Sing Core for you salvation.  No one is able to guarantee our wooden sliding doors don’t warp like we do, with a warp free 50 year guarantee.

How do you stop a wooden door from warping?

The easy answer is to buy Sing Core for your door. Our patented light weight torsion box material is able to withstand extreme conditions and maintain perfect straightness over the life of the door. Wood can always warp but sing core never will, despite being a wood and foam core. The aerospace inspired construction methods push the capability of wood to beyond the strength of steel pound per pound and lighter than an equivalent wood door of traditional construction

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

How do you straighten a warped interior door?

There is no easy way to straighten a typical wood warped door. But Sing Core’s patented and patenting pending aluminum stiffener technology, found in all “professional” grade wooden sliding doors we make, allows warped doors to rebound.

The process is simple to un-warp a Sing Core wooden sliding door that may have warped during transport or during storage before finishing and installation.

  1. Support the wooden sliding door on it’s side in a dry area
  2. Allow the panel to sit with equal circulation on both sides for 3-5 days
  3. Enjoy your perfectly straight sliding door panel

Once sealed and installed, perfect straight Sing sliding door panels will never warp.

JB Duke Hotel Doors Perfect Straight Light Weight Super HIgh Strength

Does staining wood prevent warping?

Staining wood does not prevent warping. Sing panels, once sealed with an appropriate wood sealer, will never warp. Traditional wood doors, however, are prone to warping even after sealing due to aging effects of the wood.

What causes cabinet doors to warp?

Traditional cabinet doors generally warp because of uneven moisture infiltration due to near by water sources such as sinks, showers, and steam from cooking. Everyone knows that wet wood tends to warp.

Similarly, if the wood used in the cabinet is not perfectly dry or has natural imperfections then the panel will warp no matter how it is treated.

Unlike traditional cabinets, Sing Core does not derive it’s strength from lumber, but from our patented core. This core is impervious from warping, is much lighter than a traditional wood cabinet door, and provides better insulation.

Barn doors that won’t warp

If you want a barn door that stays perfectly straight no matter what, you will have extra difficulty if you use a pure wood door. Barn doors only have 2 points of contact per panel, and therefor cannot benefit from mechanical stability of 3 or more points of contact.

Sing Doors, although not the cheapest on the market, can save time and money because you can be confident that our attractive natural wood panels are backed inside with a space age technology.

How to build a barn door that won’t warp

To build barn door that won’t warp:

  1. Order a sing core panel of your chosen length, width, and thickness
  2. Choose your skin thickness and finish
  3. Finish to you choice of color the raw wooden sing panel
  4. Mill out and install hardware

Why do doors warp

Doors warp because of uneven humidity causing dimensional change in the panel. Additionally, imperfections in the wood and stress on the door over time can lead to warpage.

Sing doors combat all these issues with out patented Sing Core material that is stronger than steel by weight and the times lighter than wood. All our “professional” grade panels come with a pure lifetime 50-year structural guarantee. Doors with excessive warpage will be replaced, with only minimal questions asked.

Order Today

If you have any questions about how Sing Core can help with your project, please contact us directly!

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Fiberglass Swing Out Garage Doors

Sing Core helps the most contemporary garage door companies break out of the mold of traditional garage door design and engineering to build new garage doors in ways that are cutting edge, highly unconventional, lightweight, high strength, and fully insulated. We produce the best fiberglass swing out garage doors.

This new generation of garage doors features groundbreaking technology allowing garage door designers and engineers to reimagine their garage door possibilities exponentially by using new garage door panel surface materials for evolutionary wooden, fiberglass, HPL, aluminum, or other metal garage doors.

fiberglass swing out garage doors

Fiberglass Swing Out Garage Doors

Swing out garage doors of fiberglass are a rudimentary approach to creating fiberglass garage doors which swing on hinges anchored to the sides of the garage door frame.  The most common format for side hinged swing garage doors is as a pair of opposing doors.

This double garage door configuration is traditionally considered as carriage garage doors as this was the initial design for carriage house garage doors.  The only problem with these carriage style garage doors was that the doors were wide and being made of wood meant being heavy, putting a heavy weight load on those side hinges.

As beautiful a design as carriage garage doors were, the sheer weight and width of the swinging garage doors led to early deterioration of the hinges charged with trying to carry out the requirements of the garage doors over time.  Carriage garage doors saw regular declines due to higher maintenance costs over time, only to be featured on the homes of those wealthy enough to see to their regular repair or replacement as necessary.

The use of fiberglass garage doors helped to overcome the weight issue, though the sacrifice was in strength, as the masses began to embrace less expensive roll up garage doors which could be easily operated by automatic garage door openers which also became available at value pricing.

Then, recently, the best garage door companies started to provide their high-end clientele with top drawer swing out garage doors in fiberglass, which excelled in being highly weatherproof as well as being insulated, lightweight, and stronger than steel pound for pound.

The secret to building such a brilliant modern garage door is using patented Sing Core inside.  For years the top contemporary architects and designers have been specifying Sing Core inside their large door designs, mostly in extremely large wooden or hot rolled steel pivot doors which were massive undertakings, where only Sing Core could solve the problems associated with weight and dimensional stability.

Sing Core has long been known for its unprecedented 50-year warp free and full structure guarantee, unheard of in the garage door industry today.

This is why Sing Core is the hottest garage door replacement in upper-budget-ranged projects in the garage door industry.  Plus, while you’re replacing those old doors, you can make an entirely new fashion statement by using almost any garage door facing material that you like.

Bifold Garage Door

An alternative twist to the swing out garage doors fiberglass is the use of the bifold garage door which reduces the size of each swing out garage door panel to half its size with alternating hinge orientations creating a collapsible set of doors to either side of the garage door opening. This is highly effective in reducing the wide swing of carriage garage doors, to the dimensions of each individual panel.

For instance, the outswing area for a 16 ft. garage door would easily be 8 ft., this could easily be reduced to only 4 ft. by using a set of folding garage doors, a huge reduction of outswing footprint.  In this manner, a 40 ft. garage door opening could be reduced to 4 ft. outswing foot print with the incorporation of folding stacking garage door panels.

HPL is a standout resource for industrial, professional, high trafficked hospitality, and government projects due to it’s being nearly impervious to damage even in heavily used areas.  Imagine having HPL garage doors, which can take on the appearance of any available surface material, without the expense or fragility of those building materials. This is the beauty of exploring the HPL garage door possibilities.

Garage doors with Sing Core inside are not limited to any size restrictions and can be up to 50 feet or more in any or both directions, (50 ft. tall and/or 50 ft. wide) and still qualify for Sing Core’s 50-year warp-free and structure guarantee, and you get to select whatever surface material you heart desires (subject to availability).

Garage Door with a Man-Door

It’s not uncommon for those huge oversized garage doors to have feature another door built into the big garage door.  This walk through garage door allows one access to the interior of the garage without having to open or operate the entirety of the garage door opening.  You could feature this pass-through feature in any garage door of any size, simply by specifying that you want a garage door with man door access.

Currently, standard sizes of swing out garage doors fiberglass growing in popularity include 16×7 ft. garage door, 16×8 ft. garage door, 12×10 ft. garage door, 12×12 ft. garage door, 18×8 ft. garage door, 10 x 9 ft. garage door, and 16×10 ft. garage door, in that order.  But the Sing Core specialty is that large custom one-of-a-kind classic art piece that you won’t find anywhere else.

The most popular surface materials today at Sing Core include wooden garage doors followed by black garage doors, wooden garage doors (like fiberglass or HPL garage doors), aluminum garage doors, brown garage doors, metal garage doors, cedar garage doors, steel garage doors, and white garage doors.

How can you get swing out garage doors fiberglass with Sing Core inside?

It’s easy.  Just go to your favorite garage door company or custom millwork and tell them your door’s dimensions, specifying the style you might like, and which surface material you want, and make sure to tell them you want, “Sing Core inside,” then leave the rest to us.

If you don’t already have a favorite garage door company, you could simply Google: “garage door companies near me” or if you’re a qualified do-it-yourselfer you might visit 247coop.com and source your materials and related services from there.

You can have your own swing out garage doors in fiberglass built to your specs in no time and have the pride of ownership which comes from having one of a kind garage door backed by the only 50-year warp free and structure guarantee.

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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

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.

Just an ordinary exterior wall. Right?

Extraordinary exterior bi fold doors!

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.

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Exterior Steel Doors

Exterior steel doors are becoming more commonplace in upscale communities where safety and security are top concerns. Steel doors are a strong defense against intruders and can withstand just about anything compared to other metal doors.

An aluminum door is probably the most economical way to approach a metal door, but exterior steel doors are in a category all their own.

Modern architecture and design are incorporating more exterior steel doors in their designs, though they could run the gamut from an architectural stainless-steel door to a galvanized steel door, depending on the nature of the project at hand.

Also note that the bronze door is now making its way into the minds of designers and are on the lips of those who want something particularly unique, to in a sense, stand out from the crowd. It is this uniqueness that has them coming back for more.

If your exterior steel door is fully exposed to the elements, you’ll want to take that into consideration when you’re designing the door. Your door engineer will know what challenges you will be facing, for if this is for a high-end project, then you don’t want to leave your client straddled with long-term maintenance at every change of the season.

Solid exterior steel doors are not practical as they are far too strong, and hollow core exterior steel door provide little protection from the elements or intrusion. And when that direct sunlight hits that steel door, look out… There’s no telling what shape it will take on.

The Sing Core Exterior Steel Door Solution

Sing Core provides the perfect solution by delivering a lightweight solid composite cored exterior door that is extremely high precision, impact resistant, insulated for both climate control and sound deadening capabilities.

 

And you’re never limited to the type of steel door that you want, as each Sing Core exterior steel door that they are involved in is more often than not a unique piece of artwork, the culmination of a visionary idea, with the engineers, in cooperation with Sing Core’s true Flat Team, which results in an unparalleled steel door that can be guaranteed for structural integrity and warp-free performance for 50 years!

For instance, stainless steel doors, galvanized steel doors, hot rolled steel doors, cold rolled steel doors, and diamond plate steel doors are among our most popular steel entry doors. Residential steel doors come in many shapes and sizes, but when your exterior steel doors are found as part of a multi-million-dollar home, these residential steel security doors could be enormous in size.

Large exterior steel doors leave the biggest impact on those who have cone the extra mile in contemporary architecture design, where the imagination and visualization of the architect is brought to life by creating large exterior steel doors, often floor to ceiling spans.

While your steel door could be in any style, shape, or feature any light opening cut out, these big steel doors are mostly operated as steel pivot front doors.

The whole idea about having steel security doors is the possession of a door that makes a huge security advantage with the largest number of features and benefits you’d be hard-pressed to find in other security steel doors.

Whether you’re looking for residential steel doors, steel garage doors, or commercial steel doors, Sing Core gives you the decided advantage because if your steel doors have Sing Core inside, they are,

• Eco-friendly
• Lightweight
• High strength
• Fully insulated
• Sound dampening
• Increased climate control
• Dimensionally stable
• Any style
• Any size (up to 50 ft.)
• 50-year structure
• 50-year warp-free guarantee

Isn’t it time you started specifying your exterior steel doors have, “Sing Core inside?”

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Large Sliding Doors in Stable Renovation

Take a look at what our friends over at SHED Architecture did when they combined Eco-friendly insulated lightweight high strength patented Sing Core with a horse stable repurpose transforming the site into an elegant workspace studio and extra bedroom thanks to a few large sliding barn doors with Sing Core inside.

BEFORE

AFTER

 

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Architectural Sliding Doors and Walls

JB Duke Hotel Doors Perfect Straight Light Weight Super HIgh StrengthNothing 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.

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AB Ply or MDF Paintgrade

There are 2 of the most popular types of paintgrade options available for your architectural door specs from Sing Core, and each includes patented Sing technologies to maximize the potential of these formats, ensuring you can enjoy the only

50-year Warp-free Guarantee

Sing Core Paintgrade Door Blanks

WARP-FREE AB PLYWOOD WARP-FREE MDF
  • Made from multiple layers of wood veneer, AB plywood is a strong wood fiber material.
  • AB plywood is water resistant and good for use in exterior door applications.
  • AB plywood face grain can be easily stained.
  • AB plywood holds screws very tightly since the varying grains of wood on each layer give the screws something to hold onto.
  • AB plywood is an excellent substrate for applying natural wood stave, wood planks, or other materials.
  • Warp-free MDF is lighter in weight and stronger than other MDF.
  • The surface of MDF is very smooth which makes it great surface for painting.
  • MDF is very consistent throughout, so cut edges appear smooth and won’t have voids or splinters.
  • Because of the smooth edges, you can use a router to create decorative edges.
  • Warp-free MDF is excellent substrate for applying veneers or other thin laminates.

.020 Walnut Veneer over extremely smooth Warp-free MDF

The most popular and least expensive is AB Ply.

Warp-free AB Ply

Our AB Ply is used in oversized exterior door applications and is constructed using water resistant adhesive using an A-grade veneer face, C-grade inner plies, and a B-grade back which is used for securing patented Sing Core. AB plywood, is a better grade of plywood, commonly used in cabinetry, where the backside need not be presentation quality.

16 ft Tall Billionaire’s Teak plank front Door on Warp-free AB plywood

Only AB plywood door blanks with Sing Core inside can be guaranteed not to warp, bend, twist, or otherwise fail for 50 years.

Generally, “AB” designation means that it will be free of knots in their outer layers, though color variations and a few healthy intergrown knots may occur infrequently. If there are any pin knots, they would only a few mm in diameter.

The A refers to the best side which is a furniture grade veneer and B the opposite side. Plywoods with grades A and B are used for finishing purposes.

The A-grade side is the highest quality veneer and most sheets will be free of flaws resulting in a plywood surface that is smooth and can be prepped and painted easily.

Warp-free MDF Guaranteed True Flat for 50 Years

Warp-free MDF

Sing Core’s MDF is not your father’s MDF. Inventor Peter Sing has developed a method or creating a perfectly smooth surface, which is a well-known characteristic of MDF, which is lightweight MDF and will not warp. Moving due to lack of strength, especially amidst long spans, is also a well-known characteristic of MDF.

Sing uses a combination of patented and patent-pending technologies which result in the only large warp-free MDF door blanks in the door industry. That’s why Sing Core is known for creating the highest grade MDF in the door industry.

When making big doors, like the large oversized doors which Sing Core is famous for, to try to use MDF without Sing Core inside would be like building a door with a giant noodle, granted the surface would still be smooth as can be.

Because MDF is not water resistant it is not recommended for exterior applications, so avoid specifying MDF for large entry doors due to its inherit weakness, instead spec AB plywood as your base material instead.

Due to the smoothest surface area material, MDF can easily be painted, or used as underlayment for thin veneers, vinyl, or other laminations.

16 ft tall White Oak veneer pivot doors on warp-free MDF top floor World Trade Center

In fact, all the most high-end veneer-work done by Sing Core uses this warp-free MDF solution as underlayment for the perfect veneering for which they are known. See: How to Make the Best High-end Veneer Doors. Likewise, their high-end millworks and door companies who apply their own laminates, they order this material as their gold standard.

On the other hand, if your intention is to add natural wood planks, then AB plywood is preferred substrate, especially for exterior doors.

While AB plywood and MDF are the most popular there are many other skin types for plywood, paintgrade, and others.

Now, maybe you have a better idea about why architects spec Sing Core