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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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Modern Steel Doors

When architects and designers are looking for the best Eco-friendly modern steel doors, even if they are exceptionally large steel doors, only one company can assist in the creation of a modern steel door that is fully insulated, lightweight, high strength and Eco-friendly.

A large modern stylish steel metal sliding door made with warp-free SingCore matertial

Modern steel doors take on a whole new set of characteristics using patented SingCore as the composite component material inside a modern steel door imbuing this new generation of steel doors with the highest precision (+/- .006 in.) and performance standards ( a fraction the weight and stronger than steel pound for pound).

Modern Steel Doors

What makes modern steel doors so unique? When you create a modern steel door with SingCore inside you can have any look, any contemporary design you want. You’re not selecting a design from a limited number of standard options. You modern steel door with SingCore inside is custom built to architectural specifications in any design that you can imagine, without risk of failure.

Whether you want a truly unique modern steel door with custom lite cut outs for intriguing window openings or your choice of steel, such as cold rolled steel doors, diamond plate steel doors, galvanized steel doors, hot rolled steel doors, stainless steel doors, and more.

Large Modern Steel Doors

With SingCore’s history of Eco-friendly metal working higher precision modern steel doors are possible with incredibly high performance even if your project includes oversized large modern steel doors. Patented SingCore helps to overcome the challenges of heavy weight and tendency to fail by using a unique combination of insulated reinforced vertical grain torsion box core, along with patent-pending modern steel door stiffeners to create large steel doors that can be guaranteed not to warp, cup, bend, twist, or otherwise fail for 50 years regardless of size (up to 50 ft.).

Modern Steel Exterior Doors

No more worrying about the failure of modern steel exterior doors which present challenges due to one side facing the exterior elements and the other side facing a climate controlled interior. If you want to possess a modern steel exterior door that will not fail, then you need modern steel entry doors with SingCore inside to meet or exceed your performance expectations.

The high performance true flat team at SingCore is on standby, waiting to help you design the modern steel exterior door you’ve been waiting for, guaranteed.

Modern Door Design

Architects and custom modern door designers are able to exercise their creative skills, empowering their imaginations with the most unique one-of-a-kind designs. Modern door design is allowed to go beyond that which was previously possible thanks to the strength and lightweight of patented SingCore.
In terms of strength and weight in large moderns steel doors, now a very tall, very wide modern steel pivot door can be massive as well as being an impressive thick steel pivot door, without compromising the project or structure due to heavy weight and can be guaranteed not to fail for 50 years.

Modern Metal Doors

The Eco-friendly metal door division of SingCore is not restricted to just modern steel doors, your custom modern metal doors could be made of any available flat metal surface materials, including (but not limited to) modern aluminum doors, anodized aluminum doors, brass doors, copper doors, lead doors and modern tin doors, just to name a few.

Hot Rolled Steel Large Sliding Doors

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Lightweight High Strength Eco Friendly Metal Pivot Doors

Pivot Door Line DrawingLightweight High Strength Eco Friendly Metal Pivot Doors

When professionals seek out extraordinary, unique and/or oversized modern steel doors the most conscientious purveyors settle on a Sing Core metal pivot door.

While exquisitely masterful in their design, modern metal pivot doors present many challenges.  The first challenge to overcome is that of excess weight. Due to the size of the door – if it is constructed simply of metal – the door is just not practical due to its excessive weight.

Contemporary modern steel doors are available in many colorsWhat you want is an

Extraordinary metal pivot door with a unique, bold and striking appearance

(see samples of contemporary metal pivot door finishes to the right…)

That has these characteristics:

  • Lightweight
  • High strength
  • Eco-friendly
  • Affordable

To combat this challenge door manufacturers seek out composite materials to incorporate into the design of the metal pivot door to deal with the heaviness of the door that causes a strain on the structural integrity of the frame, the hardware and project overall.

Solid steel pivot doors, while impressive, are just not practical, yet engineers have found ways to circumvent the obstacles in an effort to retain the appearance of being a solid steel pivot door.

Modern steel pivot door finish exampleThe next challenge to overcome is that of strength. By compromising the metal pivot door’s integrity by not being constructed of solid metal, other cores are considered to reduce the weight of the metal pivot door.

Normal alterations include, using a lesser-strength metal core. Using a metal tube substrate or honeycomb core will match the structure of the metal door, but compromises the overall strength, while resulting in a metal pivot door that is still extremely overweight.

Engineers in search of a more lightweight solution, then consider composite materials to fill the core of your metal pivot door. These include natural solutions, like wood, or manufactured solutions, like foam. While wood products are an option, if solid, are still too heavy to result in a lighter weight solution, and still cannot compare to the strength of a solid steel door. And though foam is lightweight, it simply has no structural integrity and fails the test of strength altogether. Also, over time, these core components tend to lose their integrity, and rarely (if ever) produce an end product that is true flat.

Another consideration is that of excessive energy and harm to the environment expended in the creation of your metal pivot door. The process of creating a metal pivot door with metal interior components requires a lot of wasted energy consumption and highly-skilled laborers (welders) that not only makes the door non-eco-friendly, but results in a very expensive end product.

Beautiful red hot metal pivot door finishSing Core can host any metal material, like stainless steel, iron, copper or aluminum and is the solution for all these considerations, providing the designer, contractor and end-user with all these benefits, and more…

Sing Core, when used as the substrate of your metal pivot door will not compromise the exterior metal beauty and magnificence of your door, which is the primary concern of this exciting, bold design choice.


Sing Core is extremely lightweight, yet stronger than steel over any given spans and is the primary reason why it is selected over other types of composite core materials by high-end users; solving both the challenges of lightweight and high strength. It also creates a surface that is true flat, and retains its flatness over time. Every Sing Core metal pivot door comes with a 10 year warranty.


Sing Core is also eco-friendly. As Sing Core is manufactured, the process uses very little energy, utilizes renewable materials and produces little or no waste. Sing Core is also proudly manufactured in the USA.

Stainless steel diamond plate pivot doorINEXPENSIVE

Sing Core is economical to use. Using less-skilled labor to create Sing Core makes it an affordable option. Not to mention the reduction in costs of hardware and installation.

Don’t we all want a beautiful metal pivot door that is a bold design feature revered in modern architectural circles?

Shouldn’t yours be lightweight, have high strength and be earth-friendly?

Certainly, we would expect to pay more for this technology, but Sing Core is so affordable, think of what more good you could do for the world by saving costs of production and installation, let alone your bottom line.

Sing Core’s lightweight, high strength, eco-friendly metal pivot doors are the unequivocal answer for the discriminating modern pivot door designers today.