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Create The Best Doors with Windows Using Sing Core

Doors with windows in them offer a myriad of benefits, from enhancing natural light to improving aesthetics. However, designing and constructing such doors pose unique challenges. In this article, we will explore these challenges and discuss why Sing Core is the leading choice in the industry for creating custom doors with windows.

Structural Integrity and Stability

One of the primary challenges in manufacturing doors with windows lies in maintaining structural integrity and stability. The addition of a window weakens the door’s core, making it prone to warping, bending, or even breaking. Traditional materials like wood or metal struggle to address this issue effectively, leading to compromised durability.

Sing Core, on the other hand, employs a patented honeycomb core that utilizes torsion box construction. This design consists of high quality hardwood and industrial insulation in a perfectly crafted core that is unlike anything else on the market. The resulting core is lightweight yet incredibly strong, ensuring optimal stability and minimizing the risk of warping or bending. In addition, every Sing Core door comes with a 50 Year Warp-Free and Structural Guarantee, so you never have to worry about your door warping or failing on you.


Insulation and Energy Efficiency

Windows inherently pose challenges to insulation and energy efficiency. They are susceptible to air leakage, resulting in increased energy consumption and decreased comfort levels. In addition, low end doors provide little to no insulation themselves, which compounds the issue. Maintaining a consistent temperature and preventing drafts is crucial in achieving energy-efficient doors with windows.

Sing Core’s composite core technology excels in insulation properties. Its honeycomb structure provides an exceptional thermal barrier, significantly reducing heat transfer and air leakage. This insulation prowess helps maintain desired indoor temperatures, resulting in reduced energy costs and enhanced comfort.

Acoustic Performance

Another challenge faced in creating doors with windows is maintaining acoustic performance. Noise transmission through the window can disrupt privacy, productivity, and overall tranquility. Traditional doors often struggle to provide adequate sound insulation, especially when windows are incorporated.

Sing Core’s unique construction offers remarkable sound deadening properties. The combination of its core and the high-quality materials creates a barrier that effectively absorbs sound vibrations. While a glass window will lessen the sound reduction in general, improving this quality throughout the rest of the door improves the overall effect compared to traditional materials. This superior acoustic performance helps maintain quiet and peaceful environments, making Sing Core doors with windows ideal for offices, bedrooms, or any space that requires noise control.

Design Flexibility

Crafting doors with windows also involves the challenge of achieving design flexibility. Customization options are vital to match diverse architectural styles, interior aesthetics, and functional requirements. Balancing aesthetics, functionality, and structural integrity can be demanding.

Sing Core doors excel in offering design versatility, especially when integrating components into the surface such as a window. It can accommodate various window sizes and shapes, allowing for creative design possibilities. Whether it’s an expansive glass panel or a series of smaller windows, Sing Core’s composite core technology ensures the door’s stability and integrity, regardless of the chosen window configuration.


Crafting doors with windows presents unique challenges that require innovative solutions. Sing Core’s composite core technology provides the ideal answer, offering exceptional structural integrity, insulation, acoustic performance, and design flexibility. With Sing Core, manufacturers and consumers can enjoy the benefits of doors with windows without compromising on quality or durability.

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Sing Core in the Summer: How Does Sing Core Hold Up to the Heat?

Summer is a season that brings fun and adventure, as well as extreme weather and heat. While many people are out basking in the sun, few rarely consider the effect that it has on their home. The intense heat and increased sun exposure can be a nightmare for structures, particularly doors. Increased heat can cause doors to warp and increased sun exposure leads to peeling and separation of layers.

With a Sing Core door, however, these worries become a thing of the past. Unlike the other options, Sing Core doors will never warp, bend, or become otherwise deformed. Temperature and moisture fluctuations are often what causes this warping, but due to our patented honeycomb core, all Sing Core panels are completely safe from warping. In addition, other doors may peel or delaminate in the heat due to poor quality adhesives used during their application. Sing Core uses high grade industrial adhesives for our panels, so you can be certain our doors will not start to separate in the heat.

It is also important to consider the heat inside your house, not just outside of it. Climate control is an important aspect to comfort and, in some areas, safety. Being able to accurately adjust the temperature inside your home is crucial to healthy and comfortable living. Unfortunately, most doors simply are not made with this in mind. They are either hollow or filled with poor quality materials, meaning they do not properly insulate your home. This means that when you cool your home, a large portion of the cool air will flow outside, wasting energy and lowering the effectiveness of your air conditioning. Proper insulation is essential to a quality climate control system for this reason. The honeycomb core inside every Sing Core panel consists of hardwood and high quality insulation, providing a much more effective barrier for your home and keeping your controlled climate inside and the hot air outside.

Another benefit of Sing Core panels during the summer heat is how easy they are to transport and install due to their lightweight nature. While this may be a more minor, short term benefit, it is still significant in those processes. A Sing Core door weighs a fraction of the other doors on the market, and yet doesn’t sacrifice any strength in order to do so. This makes transportation less costly and easier, and installing can be done far less difficult and taxing.

Summer is many people’s favorite season, and understandably so. It can quickly become an issue, though, if your home or office isn’t built to handle it. If your client lives in a region where summers get incredibly hot or humid, they are at an even greater risk of door related problems in the heat. Consider using Sing Core for year-round quality doors, and for the only 50 Year Warp-Free and Structural Guarantee on the market. We look forward to hearing from you!

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The Troubles of Warping Doors and the Sing Core Solution

Doors are an essential part of our everyday lives, providing security, privacy, and aesthetics to our homes and businesses. However, a persistent problem that many of us have encountered is door warping. In this article, we will explore the common issues associated with warped doors and shed light on how Sing Core doors offer a revolutionary solution to this age-old problem.

The Problem with Warping Doors

Warping is a natural phenomenon that occurs when doors, typically made from solid wood or other materials, expand or contract due to changes in temperature, humidity, or poor manufacturing techniques. As a result, the door may twist, bend, or bow, leading to misalignments, gaps, and difficulty in opening or closing. This not only compromises the door’s functionality, but also affects its appearance, causing a lack of visual appeal and reducing the overall value of the property.

Traditional solutions such as reinforcing with extra material or bracing can provide temporary relief, but they often alter the door’s aesthetics and fail to address the root cause of the problem. Homeowners and business owners alike have long sought a more effective and durable solution to combat door warping.

The Sing Core Difference

Sing Core doors have emerged as a game-changing solution to the persistent problem of door warping. Developed using our patented techniques, these doors are constructed using a unique honeycomb core that combines torsion box technology with a lightweight, rigid foam core.

The secret to their success lies in the Sing Core’s patented honeycomb core. This creates an incredibly resilient and stable base which is not only warp free, but also incredibly strong and durable. This innovative construction technique ensures that Sing Core doors remain flat and resist the effects of temperature and humidity changes.

Additionally, the lightweight core minimizes stress on the door, reducing the risk of warping altogether. By using this advanced composite material, Sing Core doors achieve remarkable structural integrity without sacrificing weight or compromising on aesthetics. In addition, every Sing Core door comes with a 50 Year Warp-Free and Structural Guarantee, so you can trust that you’ll never have to worry about your door warping on you again.

Benefits and Applications

Sing Core doors offer a range of benefits to homeowners, architects, and builders. Firstly, their exceptional stability means that they require less maintenance and repair over time, saving time and money. Secondly, their lightweight nature allows for easier installation, reducing labor costs and effort.

Sing Core doors are suitable for a wide range of applications, including residential homes, commercial buildings, and industrial settings. Whether it’s an interior or exterior door, Sing Core offers customization options to suit various design preferences and project requirements.


Warping doors have long plagued homeowners and businesses, compromising functionality and aesthetics. However, the revolutionary Sing Core technology provides a much-needed solution. With their unique construction and resistance to warping, Sing Core doors are a reliable, long-lasting investment, ensuring peace of mind and adding value to any property. Say goodbye to warping doors and welcome the stability and durability of Sing Core doors.

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Modern Designs with Sing Core

Modern design trends are all about clean lines, simplicity, and functionality. As such, many architects and designers are turning to Sing Core for their modern door designs. Sing Core door panels are a revolutionary product that offers unparalleled strength, durability, and insulation properties, in addition to vast customization potential. Here are some reasons why Sing Core panels are the perfect choice for modern door designs.

Lightweight and Strong

Sing Core door panels are incredibly strong and durable, yet surprisingly lightweight. They are made from a patented honeycomb core that is sandwiched between two layers of material, providing exceptional strength while remaining lightweight and easy to install. Our panels are pound-for-pound stronger than steel, and yet can often be lifted by only one or two people depending on the panel’s size.

Customizable Options

Sing Core door panels can be customized to fit nearly any design style. Whether you’re looking for a sleek, modern look or a more traditional design, Sing Core door panels can be customized to fit your needs. They are available in a wide range of materials, finishes, and styles, allowing you to choose the perfect panel for your project.

Energy Efficient

One of the main benefits of Sing Core door panels is their energy efficiency. They are highly insulated, helping to keep your home or building cool in the summer and warm in the winter. This can lead to lower energy bills and a more comfortable living or working environment.

Durable and Long-Lasting

Sing Core door panels are incredibly durable and long-lasting, making them an excellent choice for modern door designs. They can withstand harsh weather conditions, including extreme temperatures, high winds, and heavy rain, without warping or bending. In fact, our panels have the only 50 Year Warp-Free Guarantee in the industry. This means that they can provide long-lasting protection and insulation for your home or building, without the worry of failure down the road.

Easy to Install

Finally, Sing Core door panels are easy to install, making them a convenient and hassle-free solution for modern door designs. They can be built for nearly any size frame and easily installed, and a skilled installation team can have the door up and working in no time. This means that you can start enjoying the benefits of Sing Core doors right away.

In conclusion, Sing Core door panels are the perfect choice for modern door designs. They are lightweight, customizable, energy-efficient, durable, and easy to install, making them an excellent investment for any homeowner or designer. Whether you’re looking to update your interior doors or create a stunning entrance for your home or building, Sing Core door panels can help you achieve your design goals. So why not consider using Sing Core door panels for your next modern door project?

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Sing Core’s 50 Year Guarantee

Sing Core’s Famous 50 Year Guarantee

At Sing Core, we are well known for the high quality door and wall panels we manufacture. Their many qualities allow them to speak for themselves, though our famous 50 Year Guarantee is what really sends them to the top. Our panels are strong, lightweight, and make beautiful doors, but without a warranty those traits are far less valuable. Sing Core panels, however, come with a 50 Year warp-free and structural guarantee. This turns those fancy words into a real promise, which is more than most other panels on the market can claim.

Why 50 Years?

50 years is a long time, longer than any other custom panel manufacturer is willing to claim. It comes with significant risk, as over the course of 50 years, a lot can happen to the product. Temperature and weather exposure can cause it to warp, frequent use can cause faults in the structure, and more. With Sing Core panels, this isn’t a concern. We don’t just promise 50 years and hope the panel survives, we promise 50 years because we know it will. In fact, Sing Core panels are designed to last far longer than 50 years, though we feel 50 years is a good amount of time to prove the durability and quality of our product, and is far more than what the rest of the industry is willing to offer.

Warp-Free Guarantee

Part of the 50 Year Sing Core Warranty is a promise that our panels will never warp. Warping presents a huge concern for doors and walls, and particularly large doors are at higher risk of warping just due to their size. A warped door can lead to all kinds of issues, such as sealing problems, difficulty opening and closing, and even up to full failure of the structure or function. Sing Core panels are built using our patented and patent-pending designs that guarantee they will never warp, so this completely eliminates the risk of your door or wall failing in that way.

Warping may seem unlikely, but it is incredibly common and can happen for a number of reasons. In areas with volatile temperatures and harsh weather warping is more likely to occur, especially when regularly exposed to moisture such as rain or snow. Even in regions with calmer weather, warping can happen seemingly for no reason. Sing Core panels will never warp, and that is what our 50 Year Guarantee is built on.

Structural Guarantee

In addition to never warping, our panels also come with a structural guarantee. This means that if the door fails in a way related to the manufacturing process, we will make it right. Our panels are crafted of high quality materials in a controlled environment and are solid as a rock, while still being lightweight. We also inspect them all before sending them out, so they should never fail. However, while we are confident in our product, we want you to be confident in it, too. That’s why we offer a structural guarantee as a part of the warranty, so that you know you’ll be covered if your panel ever does fail.

How to Use Your Warranty

In the unlikely event that you need to make use of your warranty, the process is very easy. All you have to do is contact us with the information about the initial panel order and what went wrong, and we will get the process started. During the process you may be asked to provide pictures and information, but rest assured that we will make it right.

Thank you for using Sing Core!

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Sing Solution Considerations

What should you consider when seeking out the Sing solution?

1. Dimensions Affect Price


Sing Core can build anything that can be panelized, from large pivot doors to hangar doors and panelized structures such as warehouses or even Sing Log Homes. Very large panels or walls can reach enormous proportions and can be made modular for near seamless assembly on site. Other factors which affect the overall price of your project will be,

2. Importance of Surface Material


The skin material used on your panel’s exterior greatly affects how the substructure is built. Basically, the greater the tendency for the exterior surface material to move, the more of Sing’s True Flat engineering is required to create a hybrid substrate which will counteract the panel’s tendency to warp, bend, twist, or otherwise create a challenge in the field over time.

Cutaway shows detail of patented reinforced vertical grain torsion box core

3. Sing Core Inside

The core of the panel in question can come in many different variations besides the patented and fully insulated, reinforced vertical grain torsion box core to match the high precision performance expectations of your project. Many considerations are made to determine the size of the patented structure grids as well as integration of patent-pending counter-warp materials to achieve desired results.

4. Thickness

Thickness of your panel and each of its features affects everything. For instance, it is much easier to keep a panel straight and true the higher the percentage of patented Sing Core is inside your panel proportionally. Even if your surface material is natural wood, your client might desire 3/8” thick material, when using 1/8” material is far more effective, and the difference is not noticeable on the end product.

All of these things play a part in the design and engineering of your panel in terms of

Giant Factory Door Extremely Light Weight


The overall weight of your custom panel(s) is determined by the sum of all the components which are necessary to create a one-of-a-kind solution which meets your required specifications. The greater the amount of Sing Core inside your panel, the less it will weigh and the stronger it will be.


No other substrate in the world is more lightweight or high-strength than inventor Peter Sing’s Sing Core, which provides for a solid composite core based on Sing’s patented insulated and reinforced torsion box structure, which is stronger than steel pound for pound (660+ PSI). By doubling the among of patented Sing Core, you multiply the strength of the panel four times.


Besides being Eco-friendly and made in the USA, patented Sing Core is the only substrate which can guarantee your panel will not warp, bend, twist, or otherwise fail. In fact, this revolutionary building material enables the best door companies in the world to build large doors of any size which can be guaranteed warp-free for 50 years (a first in the industry).

Affordable Sing Core Made in USA exported to Thailand

Affordable Sing Core Made in USA exported to Thailand


Sing solutions for problems and challenging projects can be costly, but they may also be extremely affordable depending on your performance expectations.

If you are on a budget and flexible about some of the elements of your design, there is a good chance that Sing’s True Flat Team may be able to reengineer a solution for you that will both meet your budget and your performance expectations.