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Martha’s Vineyard Pivot Door

94 1/2″ x 31 3/4″ pivot door at Martha’s Vineyard Passamaquoddy by Tate Builders

As part of SingCore’s long march to excellence, we sustain our resolve with the knowledge of the role that our humble panels can play, when combined with the intrepid skills of our millwork partners and comrade contractors from the East coast to the West and back again. Here, we would like to take a moment to congratulate our friends at Tate Builders Inc on their successful finishing and installation of SingCore door panels at Martha’s Vineyard Passamaquoddy.

The magnitude victory of our in this combined struggle is evident at first glance, even to the untrained eye. But in this regard, we must defer to the skill and commitment of the builders.

Our contribution is not clearly visible to the eye, but immediately evident to everyone who has the luxury to work with our product. We manifest three virtues, which are part of our seemingly endless “structural revolution”:

  • The perfectly straight and narrow
  • Unbreakably strong
  • Will not give up for 50 years or more.

Case Study

Technical details about elements of this installation.

  • Finishing and Installation: Tate Builders Inc
  • Location: Martha’s Vineyard Passamaquoddy
  • Type: Pivot Door
  • Hardware: concealed FritzJurgens pivot hardware
  • Dimensions: 94 1/2″ x 31 3/4″
  • Structural Skin: 1/4″ Luan Ply
  • Finish Skin: Textural wallpaper
  • Weight: ~50 lbs

More that Just a Door – An Ideal

At SingCore, we are not in the door business, we are in the People business. Our profound vision is to architects, liberate millworks, construction companies, and all workers of the world from the shakes of large door manufacturing. For use, every door is unique and built directly to suit the purpose at hand.

Our process permits no waste, and very little slow moving. Working with a central goal in mind, every one of our factory workers pours their blood, sweat, and tears in to the realization of our monolithic vision. A new and glorious beginning, and a superior door.

This ideal originated in the mind of one man, who germinated it in the bustling cities of the East, but grew to maturity in the seclusion of the West. Now, it has succeeded in assaulting the very bastions of American capitalism, including Seattle, Los Angeles, and New York.

Yet the vision ever grows stronger through constant turmoil and continual rebirth. This is not the dominion of any one man, but rather the manifest will of humanity, as realized by our benevolent founder, inventor, and SingCore president Peter Sing.

Up Next – The World

SingCore is constantly expanding its vision and authority. There is no one in the door space that can match our prowess and capability. Yet, we are not content to rest on our laurels.

Sing’s star is rising in the east to ever grander apexes of large, custom doors, architectural panels, high end furniture panels, home construction, SIPs, alternative housing. The future is ripe for the taking. We hope there will soon be no room to hide from our reach, which will extend across the planet to touch the lives of every day individuals.

SingCore is ready to spring to action in defense of your next project. With custom, built to spec panels, all we need is length, width, and thickness to manifest your utopian fenistary vision.

Contact us today!

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Pivoting Door

If you’re looking for the best pivot door system in the world, the Sing pivoting door might be just what you’re looking for. When it comes to large panels and pivoting doors nothing is better than a pivoting door with Sing Core inside.

Pivoting Front Doors

Pivoting front doors are a challenge for most pivot door manufacturers because in most cases, pivoting doors are taller, wider, and thicker than other types of front doors. Due to the size, your pivot front door is likely to be very heavy requiring expensive hardware and installation expense, as well as continuing expensive maintenance costs because the nature of this door is to fail due to warping, or stress and strain exerted on the hardware and structure if used regularly.

If your pivoting front door has Sing Core inside, you don’t have to worry about these expenses, because you are the proud owner of an Eco-friendly lightweight, high strength pivot front door that can be guaranteed not to warp or otherwise fail for 50 years!

Pivoting Metal Doors

Pivoting metal doors are making their mark by appearing more regularly in modern architecture and design channels. A metal pivot door is going to be extremely heavy and if welded will compromise high precision, this is a recipe for expensive regular maintenance over time, unless your metal pivot door has Sing Core inside.

Your perfect pivoting door would possess all the visual cues offered by the design your creativity birthed, without all the headaches, and pivoting metal doors are far more high precision based on the precision of Sing Core (+/- .006 tolerances) and the fact that inventor Peter Sing’s factory uses patented and patented-pending pivot door manufacturing processes which are welding-free.

Sing Core provides the top door manufacturers in the world with all types of metal doors. By far, the most popular metal doors are aluminum pivot doors, which is the most economical and high-performance metal which can be used in metal doors. If that’s what you’re looking for, then the aluminum pivot door with Sing Core inside might be the perfect match for you.

Next up are steel pivoting doors, which come in a variety of steels, such as cold rolled steel, galvanized steel, hot rolled steel, diamond plate steel, and quilted steel. Of all the different kinds of steel available, hot rolled steel is climbing the charts at an incredible rate, and the hot rolled steel pivot door is expected to be the number one selling custom-made modern pivoting doors soon.

Custom-made Modern Pivoting Doors

Long known for their custom-made modern architectural pivoting doors, this is the mainstay of the success of Sing Core. Inventor Peter Sing’s custom high-end pivot entry doors are featured in the most expensive multi-million-dollar homes across the United States and can even be found on the top floor of the highest building in America (the 89th floor of the Freedom Tower at the World Trade Center).

Interestingly enough, even though Sing’s Eco-friendly factory is nestled in the serene Pacific Northwest in a remote area of Washington State, most of the products are shipped out or exported, with nearly 80 percent of inventory being shipped to the greater New York-area.

Warp-free Wood Pivoting Doors

And if that wasn’t enough, inventor Peter Sing seems to have conquered the most prevalent of problems with wooden pivoting doors, which is widely known as warping. With the proprietary knowledge of non-warping technologies supported by hybrid patented and patent pending reinforced torsion box inventions, Sing’s True Flat Team is able to create a wood pivot door which can be guaranteed not to warp, bend, twist, or otherwise fail for 50 years.

50-year Guarantee

It’s the only way we know of to make a large pivoting door (up to 40 ft.) that can be guaranteed to remain warp-free for 50 years, including a full structure warranty. Prior to the invention of sing Core, such a feat was just not possible, especially for a large pivoting door made of wood.

Thanks to Sing’s invention, the way large pivot doors are built is changing all over the world, and you can be counted among the many who can enjoy the sense of peace which comes from owning a pivoting door with Sing Core inside, helping to make the world a better place one door at a time.

 

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Modern Steel Door

As time keeps on slipping into the future, a new generation of modern steel door was born with an Eco-friendly approach to conservation and sustainability, a true evolution in the modern steel door industry with revolutionary implications, changing doors made of steel in the USA as we move well beyond traditional modern steel door manufacturing.

These are not your parents modern steel doors. This new generation of modern front doors uses a combination of patented and patent-pending contemporary steel door manufacturing processes to build the lightest weight, hybrid solid core steel door that is fully insulated and stronger than steel pound for pound.

This new door making technology has empowered architects and door engineers to design the most intriguing custom modern architectural steel doors that nearly defy the laws of physics, allowing the creation of extremely large modern steel doors to be used as a one-of-a-kind signature front door, all while preserving the valuable resources of Mother earth.

These unique custom modern steel doors were introduced to us by inventor, Peter Sing, who garnered national attention by offering us his patented Sing Square Log Homes which revolutionized the log home building industry, his square log invention opened the door to the new generation of modern steel doors which would follow.

Sing’s handcrafted front doors are made in the USA in his factory located in the heart of the serene Pacific Northwest without the use of welding which leads to being able to create a high precision modern steel door core material which is not only fully insulated but boasts +/- .006 in. tolerances and is stronger than solid steel pound for pound.

It is this patented modern door technology which allows Sing to partner with the biggest and best door manufacturers in the world, as well as the high-end millworks and metal fabricators to build the best architectural steel doors in the world which are not limited in size.

With this huge reduction in weight the creative impulses of eclectic visionaries are expressing themselves in the form of large modern entry doors which were just not possible to manufacture with the technology of the past. To attempt to build such a feature would have resulted in manufacturing a steel door which was very heavy, expensive to operate and maintain, and potentially dangerous throughout the manufacturing process as well as amidst the service life of the front door of yesteryear.

Not to fear, Sing Core is here. Now, you too, can have lightweight, fully insulated modern steel panel doors which are of the highest precision, stronger than steel, and are guaranteed not to warp, bend, twist, or otherwise fail for 50 years.

All you have to do is to go to your favorite manufacturer of steel entry doors, tell them the height, the width, and the thickness of the steel exterior doors, being certain to tell them you want, “Sing Core inside.” Then Sing’s factory will work together with your favorite builder of modern metal doors (residential, commercial, or industrial) to deliver to you the best modern and contemporary steel exterior doors made in the USA.

And you’re not limited to using patented Sing Core just for your modern front door, because contemporary entry doors, are not the only modern doors which are manufactured with Sing Core inside.

As you may have guessed, the next logical step for these contemporary exterior doors is to revolutionize the way modern steel garage doors are made. Not unlike our large contemporary doors, modern steel garage doors can also be made with Sing Core inside.

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16′ Tall Doors in Partnership with Miller Blaker

14' Tall Oak Doors in One World Trade CenterSingCore is very proud of the work that our clients, and partners in the “Platinum Club,” are able to accomplish. Together we are working to push the limits of what is possible in the realm of custom, large, architectural doors.

 

In particular, we are pleased to present the work of our friends over at Miller Blaker and their success on the 14′ tall oak doors installed in the One World Trade Center in New York. The crown jewel of American industry, it is an honor for SingCore to take even a small part in the resurrection of this iconic building.

Top of the One World Trade Center

These 16 ft tall 3 ft wide 2.25-inch thick warp-free door panels are among the only Eco-friendly lightweight, high strength, insulated doors made in the USA that can be guaranteed not to warp, bend, twist, cup or otherwise fail for 50 years.

Features of the 14′ Tall Oak Doors

The most outstanding feature of these doors is the extreme size. Many door manufacturers will not even consider building a door at this size, because of the myriad difficulties. Without an advanced technology such as SingCore, a 14′ wood door would be extremely heavy and have the potential to warp over time.

These White Oak doors weight in at a slight 220 pounds each, around a third the weight of a similar door made without SingCore inside. Our patented and patent pending proprietary construction process allowed these doors to be not only extremely light,  but also extremely straight. We guarantee  all our “professional” grade doors last for 50-years.

Not only functional, these amazing door panels have the look and feel of solid wood. Our “green” technology means that we reduce overall resource usage and primarily use renewable resources such as wood for the construction of our panels.

Technical Features of the Millar Blaker Doors

Like all our doors, these panels were custom designed and manufactured by SingCore to meet client specifications. The design we came up with, and offer to all our clients, includes the following revolutionary features:

  • Integrated solid wood edging
  • Sound deadening
  • Internal aluminum support structs
  • Custom solid wood blocking for hardware

A Note About Success

If you’re one of the top contractors in America, when you’re called on to deliver the best tall doors to the top of the World Trade Center, you want to make sure you’re not embarrassed when your sleek white oak doors fail due to warping.

When your reputation depends on it, you need the backing of a professional company that can deliver the goods and have your back, and there’s only one company in the United States that builds large doors which can be guaranteed for 50 years.

The most exclusive architects in the world specify, “Sing Core inside,” their doors when nothing less than the very best will do, and you want your customer to be on the top of the world.

What Can We Do For You?

SingCore is constantly looking for the most challenging and rewarding jobs to test our one of a kind technology. If you are looking to advance the world doors, then contact SingCore today!

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Sliding Metal Doors

Sliding metal doors were all the rage in commercial, industrial, and residential applications in the fifties and sixties. The only problem with these doors was that they were costly to maintain because these sliding metal doors were so heavy. It’s a lot of extra weight to add to a structure, especially if the structure isn’t manufactured primarily of concrete and steel.

Rollers would breakdown, bearing would fail, tracks would deteriorate, as the maintenance costs piled up over the lifespan of the door. Now, thanks to Sing Core, there is a solution for making Eco-friendly sliding metal doors which are lightweight, with Sing’s patented solid hybrid core.

The classic design and look of sliding metal doors are making a comeback in modern contemporary architectural designs and it is having huge impact, especially if the sliding metal doors are very large in size.

This new resurgence in metal sliding door design is implementing all types of metal, primarily focused upon aluminum door, stainless steel door, galvanized steel door, cold rolled steel door, and hot rolled steel door, in that order of popularity among modern architects and designers.

When contemplating the incorporation of a large metal sliding door into your design, there are many considerations to take into account. Will there be maintenance required regularly over the life of the door? In most cases, large doors will need regular maintenance to keep them functioning properly, and to repair or replace them if they either become damaged or start to warp.

Any metal door could be made of any type of available metal, though some types may be cost prohibitive, and others may be too soft to deliver consistent high performance over time, so it’s best to know your metals before you specify the material, unless, of course, price and regular maintenance are not an issue.

Aluminum and steel sliding doors definitely lead the pack over all metal sliding doors, and exterior steel doors are a hot item, and when they encounter direct sunlight, that’s when things start moving. That’s a problem which could prevent the steel sliding door from operating correctly and may cause undo stress on hardware, leading to all kinds of other problems.

When a warping metal sliding door is of concern, Sing Core is the solution, especially for modern metal doors over three-and-a-half feet wide and seven feet tall. Inventor Peter Sing can help architectural door designers to create large metal doors which can be guaranteed warp-free for fifty years.

In fact, if you have a large metal door with a 50-year warp-free guarantee, that door has Sing Core inside and it was designed, engineered, built, and finished to achieve those special results.

While Sing Core is found inside the best metal sliding doors in the world, Sing Core does not make sliding doors. Sing Core works hand-in-hand with the best millworks and metal door fabricators in the world. The result of this massive team effort to achieve such high-end sliding metal doors. No detail is overlooked.

It takes a village to build a lightweight, high strength, metal sliding door that is a one of a kind piece of work which is made to last for centuries and guaranteed to remain warp-free for at least 50 years.

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Real Wood but 1/3 the Weight of Solid Wood

Sing Core is a patented and patent pending real wood material. With a real wood exterior, and an environmentally friendly wooden torsion box core, you get the look of real wood, with one third the weight and a strength greater than steel by weight. Further, our custom panels do not warp.

Our material can be worked with ordinary woodworking tools. And, is in almost every respect a superior light weight alternative to wooden planks, beams, and sheets.

What Kind of Wood is Lightweight?

When you think of light woods, your mind typically goes to Spruce, Balsa, Box Wood, or some other exotic tropical variety.

But, here at SingCore, we specialize in super lightweight wooden panels with almost any wood finish. Need a walnut panel that weighs less than spruce, then we can make one custom just for your project. Wood skins can supply include, but are not limited to:

  • lightweight-panelPine
  • Cedar
  • Cottonwood
  • Alder
  • Ash
  • Oak
  • Walnut
  • Beech
  • Maple
  • Birch
  • Teak
  • Mahogany
  • Fir
  • Cherry
  • Rosewood
  • Elm
  • Larch
  • Ebony
  • Hickory
  • Spruce
  • Purpleheart

 

 Is Balsa Wood the Lightest Wood in the World?

No! SingCore is the lightest wood in the world! Our lightweight and super strong core is both 1/3 the weight of typical wood or less, yet stronger than Oak. If you need something that exceeds every other material that you have worked with in the past, then you need SingCore.

Which Wood is the Strongest?

The strongest wood in the world is SingCore. Our wooden torsion core, with custom exterior faces with any wood veneer, wood stave, metal, plywood, plastic, or other finish, is stronger than steel by weight. Yet remains surprisingly light for its size.

Lightweight Wood Sheets

Sing Core makes the lightest and strongest wood sheets on the market. All our panels are made directly to order. All we need from you is the desired length, width, thickness, and desired skin finish.

Our wood sheets are guaranteed not to warp, and are covered by a 50-year structural warrantee. Although we are not the cheapest, we stand by our product the longest of any manufacturer in the market.

Lightweight Wood Board

Sing Beam and Sing Board can be custom made for you application. Easy to move. Perfect straight. Lighter than wood. But, stronger than steel.

What Kind of Wood is Light but Strong?

For a light board or panel that has the look of wood, with solid wood staves, but is much lighter than wood should ever be, then you have come to the right place. SingCore makes custom, to order, panels that exceeds the strength of any other wood on the market.

Lightest Wood for Shelves

Sing core panels make amazing shelves. With little to no VOC, they can be used in almost any sensitive situation.

The panels are so strong that they can easily support the weight of a morbidly obese man, yet they remain remarkably light to the touch.

Lightweight Wood Panels

If you are in the market for lightweight wood panels for — doors, general construction, furniture, cabinets, architectural use, trade shows, or other special purpose, contact our estimates department today.

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SingCore Curved Door — Custom Oversized Warp-Free Curved Door Panels

SingCore Curved Door

Bring your architectural vision full circle with the SingCore Curved Door — the only custom curved door system engineered to combine lightweight construction, warp-free performance, and a 50-year structural guarantee. Built for the world’s most ambitious architectural spaces, it delivers unmatched precision and long-term reliability at any size or radius.
Veneered curved door in hospital

 

The Ultimate Warp-Free Custom Curved Door

Bring your design vision full circle with the SingCore Curved Door — the only lightweight, warp-free curved door system backed by a 50-year structural guarantee. Whether for a luxury residence, commercial lobby, or museum installation, SingCore’s patented torsion-box core makes it possible to achieve any radius, size, or finish with unmatched strength and stability.

Painted Curved door with severe radius

Why Architects and Builders Choose SingCore

  • Warp-Free for 50 Years – Our patented core eliminates the twisting and distortion that affect traditional curved doors over time.

  • Lightweight, Strong, and Rigid – Up to 80 % lighter than solid wood or metal while maintaining exceptional structural performance.

  • Custom Radius Options – Built to your exact curve or arc specifications — concave or convex.

  • Compatible with Any Skin – Choose veneer, paint-grade MDF, marine plywood, HPL, metal, or other specialty materials.

  • Sustainable and Eco-Friendly – Made in the USA using renewable materials and minimal adhesives.

 

Painted curved door in residence

Curved Door Installed (Photo courtesy of Wirth Woodworking)

Custom Curved Doors for Specialty Architectural Applications

SingCore curved doors are engineered for architectural and high-performance environments where precision and reliability are essential. Each door is manufactured to exact specifications — radius, thickness, size, and finish — ensuring perfect integration with complex design elements and demanding installations.

Typical applications include:

  • Curved pivot doors

  • Curved sliding doors

  • Arched entryways

  • Radius wall systems and structural feature walls

  • Specialty architectural enclosures

Engineering Excellence Inside Every Panel

At the heart of every SingCore curved door is our patented torsion-box honeycomb core, providing a superior strength-to-weight ratio and warp resistance unmatched by traditional construction methods.
Unlike foam or solid cores that can swell, split, or distort under environmental stress, SingCore maintains precise curvature and structural integrity for decades — even in large or complex configurations.

Technical Highlights:

  • Custom-engineered thickness and radius to meet your design requirements

  • Exceptionally lightweight while maintaining structural rigidity

  • Compatible with standard or custom hardware systems

  • Fabricated for both interior and exterior environments

    Frequently Asked Questions

    What is the maximum size for a SingCore curved door?
    There are no fixed limitations — each panel is custom-engineered to your specifications.

    Can you build both concave and convex doors?
    Yes. Our process accommodates any radius curvature, including compound shapes.

    Can I apply my own veneer or finish?
    Yes. A hot-press-ready option allows you to apply veneer or laminate locally.

    Do you build exterior-grade curved doors?
    Yes. Exterior versions are fabricated with marine-grade materials and weather-resistant bonding systems.

    How do I request pricing?
    Provide your dimensions, thickness, radius, and skin preference to receive a custom quote.

 

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Oversize Custom Fire Resistant Doors

Sing core material is not naturally fire retardant, but gain the fire retardant properties of their skin materials. Sing panels can be made with almost any skin, common varieties include:
  • Plywood, MDF, Masonite
  • Formica, HPL, or other plastics
  • Metal such as steel (cold rolled / hot rolled), aluminum, copper
  • Dry wall
  • Other interior finishes
We make our panels directly based on your exact specifications, so all you need to do is choose the skin with your desired level of retardation, and we will deliver.
For a highly fire-resistant door with the surface skin of wood, we have the option of layering several skin materials with outward facing wood stave or wood veneer. Therefor you can have the look of beautiful  wood on the outside but the safety of highly fire resistant materials on the inside.
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Pivot Doors

There’s no better way to make a lasting impression than with a big pivot door. Large pivot doors as entry doors are the best way to garner attention.  Plus your guests will remember and talk about that “big pivot door” long after they’ve visited your home or structure.

Pivot doors make an impact which does not fade quickly. We specialize in working together with the elite high-end millworks and exclusive custom door manufacturers to create breathtaking custom high-end pivot entry doors for the most discerning clients in the United States and abroad.

Specializing in large opening doors is a craft which until recent years presented immense challenges for architects, designers, and engineers when it comes to creating large pivot doors which are taller than eight feet or wider than four feet due to the limitation of the building materials available at the time.

Now, Sing Core presents a pivot door blank which empowers any visionary pivot door company to bring their large pivot door dreams to life. This has ushered in a whole new series of highly individualized one-of-a-kind pivot doors, each one is a specially crafted pivot door which may be similar to, but clearly unlike any other door, making their way into the most exclusive designs and structures around the world.

You can find pivot doors with Sing Core inside just about anywhere from beneath the sea (US Navy) to outer space (NASA) and everywhere in between. This is no surprise when you take into consideration that this is the only way to make large pivot doors which are lightweight, fully insulated, and fully resistant to warp.

Sing Core’s hinged doors and pivot doors are a growing trend among modern door companies, contemporary architecture, and design aficionados who are on the leading edge of the wide range of industries which they represent.

Large pivot entry doors are a symbol of elegant superiority, demanding the attention of anyone who approaches them to focus upon them. There is no hiding their effect on guest who encounter them. It’s hard not to pass through such a large opening without expressing one’s self, with something, like, “Wow.”

Until the advent of Sing Core, the resounding challenge facing pivot door manufacturers was the fact that pivoting doors were warping. Thanks to inventor, Peter Sing, his factory is able to build warp-free pivot door blanks custom-designed and built to host any flat building material. This non-warping substrate enables any pivot door company to build a pivot door that does not warp.

In fact, custom built doors, built in tandem with Sing Core’s true flat team can provide clients with pivot doors which can be guaranteed not to warp, bend, twist, or otherwise fail (including full structure) for 50 years; guaranteed in writing. No other door builder can do that, unless their doors have Sing Core inside.

Unlike hinged doors which are firmly anchored on one side of the door to help prevent warping, pivot doors only have two points of contact where the door swings freely from side to side, in some cases all the way around, pivoting on one anchor point on the doors base and the other on top of the pivoting door.

That’s it. Therefore, it’s very hard to keep pivot doors straight. Sing Core provides pivot doors such as aluminum pivot door and steel pivot doors, but also dares to build and create warp-free versions of wood pivot doors, which are by far the most problematic.

Glass and metal pivot doors provide the least amount of problems, yet architects and designers still specify Sing Core to reduce the weight and increase the insulation value of the metal and glass pivot doors to reduce sound and increase thermal capabilities for the best of all pivot doors available today.

And when it comes to pivot front doors, these pivoting doors can be the perfect solution for doors which face the sun and/or may be fully exposed to the elements. Sing’s modern pivot doors are featured in the most expensive homes and industrial locations, enabling your or your client to possess the most beautiful pivot door system.

Thanks to the true flat team at Sing Core, pivot doors are an excellent choice for addressing those large door openings. Having a guaranteed precision designed and engineered pivot door makes all the difference, especially for those with the highest expectations and attention to detail.

While perusing the pages of sincore.com you will find photos of pivot doors that will challenge your otherwise sound sensibilities, and you will start thinking outside the box as your start to imagine the new possibilities as inspiration for pivot door ideas which you may not have dared to conceive of previously.

You are not limited to using pivot doors as front entry doors because the look and feel of pivot doors can be seen across a variety of settings including used as outdoor pivoting gates made from unique materials including cement gates and pivoting HPL gates.

Specially designed and engineered pivot door, fiberglass and HPL pivot doors are quite common in industrial and hospitality applications where they are exposed to high traffic environments.

Sing Core’s custom-clad pivot doors can host any available flat building material, such as aluminum, brass, brick, cement, cold rolled steel, concrete, diamond plate steel, fiberglass, galvanized steel, FRP, hot rolled steel, HPL, Kevlar, Masonite, MDF, metal, stainless steel, and wood. Any type of wood species.