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Patio Doors

When you’re not just looking for any patio doors, there’s a good chance you’re looking high and low for the best patio door to suit your needs, your particular taste(s) as well as beautiful patio doors. Normal, off the shelf patio doors are not going to suit what you want in a patio door. Chances are you’re looking for the best patio doors, doors that are not your run of the mill patio doors, but unique one of a kind patio doors.

The Only 50 Year Warp-free Guarantee and full structure warranty

If you really want the best patio doors, you will need to enlist the skills and artistry of a local millwork or custom patio door manufacturer.

Sliding Patio Doors

Sliding patio doors are the most prevalent and sought after styles of patio doors, which can and often do include several sliding patio doors in succession including overlapping sliding patio doors which are also called bypass sliding doors because one door slides over another door panel, which may or may not be a sliding patio door. Depending on the design, one or more patio doors may be stationary.

The best sliding patio doors featured in high end homes are made with wooden sliding doors that feature large glass window lite cutouts. It stands to reason, if you’re going to have a nice patio, you’re going to want to enjoy it both from the inside and the outside of your home. So, unless you’re primary concern is high security level patio doors made of Kevlar or featuring Lexan clear polycarbonate, you’re going to want sliding patio doors with a view (glass installed).

French Patio Doors

Those sliding patio doors with the big glass cutouts? We call them French patio doors. By definition a French door is a usually a wood door featuring a large window glass pane. Sliding French doors allow you to enjoy the beauty of the outdoors regardless of the time of year. French doors are Eco-friendly in that they maximize the availability of the natural lighting.


If your French patio doors have Sing Core inside, they are lighter in weight and also insulated for climate control and also sound deadening qualities, maximizing your investment for the most Eco-friendly French patio doors.

While the sliding French patio door is intended to provide access to and from the patio area, they are also elementally and visually impressive enhancing the overall appearance of any patio access area. Sliding French patio doors are by far the most elegant patio doors, and backed with Sing Core’s 50 year warp-free and structure guarantee, are by far the most sustainable patio doors.

Wooden Sliding Doors

Since wooden sliding doors are the preferential choice of designers, architects and owners of the most expensive homes ($20 Million & up) chances are these are going to be wooden sliding doors which are featuring large lite cut outs and are likely to be very tall, which could be 16 ft. tall wooden sliding doors, or taller sliding French patio doors. Wooden sliding doors (especially if they are large wooden sliding doors) present a number of challenges for the architects, designers and millworks or custom door manufacturers who build them. The number one problem with any long span of wood is that it will warp. It’s not a matter of if the large wooden sliding door will warp, but when it will warp.

That’s why it’s so important to have Sing Core inside your large wooden sliding doors, because a warped wooden sliding door which does not open of close is not a door at all. Although, if your door has a large window glass pane lite cutout, you will still have the view, even if the door fails, your wood French patio door can be a French patio window.

The wisest most efficient designers and architects increasingly are specifying that all their large wooden sliding doors and wooden French patio doors have “Sing Core inside.”

Sliding Door Design

The design of sliding door, and sliding doors in particular, can be complex and may require a true team approach to the sliding door design. The architect can specify the sliding doors, and the designer (who may also be the architect or the owner) knows what they want. The concerted efforts of the custom patio door builder or manufacturer, the millworks, (as well as Sing Core, if specified) and the install team, must work in tandem to solve all the pending challenges that may arise from the sliding door design.

Extra care must be taken in the selection of the sliding patio door hardware, ensuring that it is rated for exterior use, and also matched to the weight of the sliding patios door as it was designed. The weight of the sliding patio doors dictates the types and styles of sliding patio door hardware which will be necessary for improving performance and reducing maintenance over time.

For patio doors that have solid warp-free Sing Core composite core inside, these patio doors will be lighter in weight than other solid core doors, reducing the cost of what otherwise might require heavy duty sliding door hardware, which can cost many times the cost of the sliding doors themselves.

Modern Patio Doors

In this day and age, modern sliding doors need not adhere to the same design characteristics as their sliding patio door forerunners. In the most contemporary architectural designs custom lite openings can be designed which contrast wildly in comparison to earlier traditional designs.

It is common for Sing Core to pre-cut custom lite openings in modern patio doors based on the visionary drawings of the contemporary architect, designer or owner.

By altering and creatively designing the glass openings in an otherwise sliding French door configuration, a unique glass design and install can increase the effective curb appeal and radically enhance the perceived value of a home, when the owner desires to be uniquely separated from the pack.

Plus, high end modern patio doors need not be limited to being manufactured of wood. You might see these highly individualized, one-of-a-kind patio doors made of hot rolled steel, copper, or concrete, because custom patio doors with Sing Core inside could be made of any available flat building material.


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Sliding Door

Sing Core is the new way to design your door

Solid like a rock, light like feather so you don’t smash your finger.

Wood sliding patio doors, sliding glass doors, and even the most high-fashion vinyl sliding patio door can be expertly engineered with patented Sing Core technology. Strengthening outdoor sliding doors and reducing the weight helps to protect and reduce maintenance to expensive sliding door hardware as well as added stress and strain on the structure. See our new C Series line of Affordable Barn Door and Sliding Closet Doors.


The Sing Core sliding door offers so much more than luxury, but also increases safety and security of the homeowner’s family, the contractors and workers, as traditional overweight sliding doors have been known to be unsafe and can cause injuries threatening life and limb. Reduce liability of your contractors and commercial clients by reducing on-the-job injuries and help to protect the lives of your clients and their families in residential settings.

Even the best health insurance cannot replace a finger that has been crushed by a heavy sliding door.


When it comes to sliding doors for walk in closets, most people don’t recognize the importance of remaining true flat inside the pocket door frame. Whether you’re looking for a pocketed door system, wall-mounted system, hanging or floor track system, you can experience the superior performance of your single French door, fiberglass French door or exterior French door because you’ve been introduced to the best sliding French doors for sale on the market today.

Sing Honeycomb Oversized Door Finger PushExterior sliding barn doors can be beautiful following installation, but after time, problems develop due to door failure. They tend to expand and contract due to weather exposure causing them to warp, twist, and crack, compromising the overall performance of your sliding barn door system. Even a 1/4″ deflection can compromise an otherwise aesthetically pleasing completed project. Sing Core’s true flat guarantee is why high-end millworks and designers seek out Sing Core for extreme weather and temperature-controlled environments.

For the do it yourselfer, DIY sliding closet doors can also be a challenge, and Sing Core can help to bridge the gap between the solo sliding door project.

Sliding closet doors are gaining popularity amongst discerning builders and designers, while wooden sliding closet doors are extremely attractive, infusing Sing Core technology can save your interior sliding doors from warping, twisting and/or cracking, so that you can enjoy the elegance and functionality of your sliding door for lifetimes with little or no maintenance.

No company excels in building sliding doors that are much larger than the standard 8 foot sliding patio door. Sing Core specializes in building extreme oversize, large sliding doors that are true flat and guaranteed (see testimonial).

When you’re designing a double sliding door system, the true flat advantages of Sing Core helps to maintain the structural integrity, keeps the sliding of the doors from interfering with the perfect functionality and long-term efficiency.

And increase in interior design trends, like the wall mounted sliding door, Sing Core is the sliding doors company that can get your from here to there whether you are looking for a sliding door for bathroom, sliding barn door kits, sliding door dividers. Sing Core is your preferred resource if you want to avoid cheap sliding patio doors.

Large Sliding Door Perfectly Straight Strong Flat

Sliding fire doors and refrigerator/freezer sliding doors are gaining popularity in the Sing Core sliding door lineup.Regardless of the wide variety of types of sliding doors, Sing Core is the greater sliding sliding door that offers the elegance and excellence in barn door sliding door, sliding office doors, and exotic sliding doors, like, Chinese sliding doors, sliding French doors exterior, Shoji screen sliding doors and/or Japanese style sliding doors.

Barn door interior sliding doors come in a variety of materials that are virtually unlimited to match your aesthetic tastes including, aluminum patio sliding doorsSing Core makes the best real sliding door that solves the challenges that face architects and designers around the world for the best results, guaranteed.chalk wall2

sliding door

Your sliding door could be a giant chalk board or magnetic display

How to BuyMetal Composite Sing Core panels are true straight, light and strong.To order Sing Sliding Doors submit an order form either by email,, or print and fax it to: 360.495.4585. We’ll provide a quote within one business day. If you have questions, please contact us.

Easy Ordering

All we need to know is the length, width, thickness and what you desire on the exterior, and your custom specialty panels are made to order. Getting a quote for your specialty product, is easy, thanks to our simple online order system.

Bulk Discounts

If you’re looking for a bargain price, remember, the more you order, the less expensive your total order will be per piece. Quantity and wholesale inquiries are encouraged. Feel free to contact us for more information. Click here for Closeout specials.

Fast turnaround: In you’re in a rush, only Sing Core can be custom made within 24 hours and is proudly manufactured for you in the USA.

Fast delivery: Any thickness and almost any length, less than 5 ft wide, can be made with in 48 hours if it is rush order.

SINGCORE Sliding Doors are easy to order. You may choose from our stock panels or order custom sized panels. Our price is based on the length, width, thickness, and quantity. Submit a Work Order by fax or email, and we will give you a quote within one business day. If you have a tight budget, give us a call, we might have an alternative solution tailored to your needs.

Sliding Doors


If your sliding doors are large, you probably have to deal with the issues of added weight that can be problematic. Lightweight Sing Core’s torsion-box substrate is the answer to dealing with the issues of weight of large sliding doors yet adds high structural integrity, and helps to prevent injury to the end-user(s).
When considering your sliding door ideas, think about the size, the weight and the structural integrity of your sliding door system over time.