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Large Interior Doors

Masters of oversized doors, Sing Core has been enabling the biggest door manufacturers in the USA to make the best biggest doors that can be made and guaranteed to remain warp-free for 50 years. For 50 years, the major door companies opted out of the large interior door marketplace because the rate of complaint and return was too high, easily eating up year-end profits.

So, the door companies would supply all the standard-sized door while referring the large exterior doors, large pocket door, large interior doors, large glass sliding doors, large garage doors or large wooden doors to a millwork who specializes in one-off specialty doors and let them deal with the service calls.

Then, about 20 years ago the millworks started making doors with Peter Sing’s patented Sing Core inside. Now they could make huge exterior doors and large interior doors, including large wooden doors that would stay straight and true for 50 years, guaranteed. Until the invention of Sing’s core, this was never possible in the large interior door industry.

It took a few years for the standard door manufacturers to come around, but they did. Now you can do to just about any door company and get the entire door schedule for any project including the huge mammoth-sized doors all sourced from one company, plus the entire package could be covered by the manufacturer’s warranty without having to have a rider to exclude the big interior doors or enormous exterior doors.

Sing supplies the warp-free door blanks for each door company’s designer oversized doors which are available in any custom size large doors up to 50 ft. Sing’s interior doors come in a wide variety of styles to accommodate any size or style, allowing architects and designers to freely express themselves in terms of door sizes with unlimited large interior door options.

Floor to ceiling doors are reaching new heights of interior door designs for everything from custom interior to wine cellar doors in contemporary architecture and design projects across the USA. These large luxury interior and exterior doors are available in any flat building material such as wood, steel, and fiberglass exterior, and interior doors, including storm, and patio doors.

No job is too challenging for patented Sing Core. Sing has a specialized True Flat Team which reviews every job that would otherwise be too challenging to consider for any conscious project manager. The team reviews all the data of the fashioned interior door designs and comes up with the best solution(s) to provide a door that is

Lightweight (a fraction of the weight of other solid core doors)

High strength (Sing Core is rated at 600+ PSI, stronger than steel lb. for lb.)

Fully insulated (for sound deadening and climate control)

High precision (Sing’s core +/- .006 in. tolerance)

Warp-free (guaranteed for 50 years)

As many of Sing’s clientele has admitted,

“There is just no other way to do it.”

Sing’s Core doesn’t have too much advantage for use in standard sized doors, though companies who specialize in impact doors, sound proof doors, and high end refrigeration applications do build smaller doors with Sing Core inside.

Where Sing’s core really shines is in doors that start at 48″ x 96″(4′-0″ x 8′-0″) doors and go up from there (to 50 feet?). You probably want to know,

How to buy the best large interior doors for your home

It is easy if you have an architect onboard, your architect simply specifies a door with “Sing Core inside” then the rest of your team just makes it happen. If not, you can contact any of your favorite local door companies or millwork (just Google “millwork near me”) and tell them what you want. Peter Sing and his True Flat Team will use all their resources, patented and patent pending, to create for you the warp-free large interior doors of your dreams.

How can Sing deliver such large doors?

Military and government agencies are able to coordinate transfer of items that are too large for average transport, otherwise Sing designs them as modular big interior doors that can be assembled onsite, with all the precision of being assembled in his factory. This is another piece of the puzzle that Sing has mastered.

So, whether you are looking for the highest quality exterior doors or the widest range of interior door styles then and you desire only the best doors ever made with the best warranty in the United States, then made in the USA premium doors with Sing Core inside are the only doors that will do.

Accept no substitutes. (Don’t get caught trying to switch a regular door with one that has been specified as having Sing Core inside, because when it fails, the customer will contact Peter Sing, and everyone will know that you tried to cut corners… true story.)

Everything from impact resistant slab doors to premium and unique interior doors because every door with Sing Core inside is an individual work of art, which is guaranteed not to warp, bend, twist, cup, or otherwise fail for 50 years.

Make sure your handcrafted beautiful custom wood doors and beautiful solid wood interior and exterior doors have Sing Core inside.

 

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Standard-sized Doors for Retail

You asked for it, and Sing Core delivers, and as always, goes the extra mile.

For years, Sing Core has been providing the most exclusive solutions for large high-end door manufacturing, made available to only the best custom door manufacturers and millworks. Since we started supporting the door industry rarely does a day go by when we aren’t dealing with many requests for standard-sized doors for retail installations.

Unfortunately, since our factory is only set up for one-off custom large doors, the cost of making a standard-sized door with Sing Core inside is just too cost prohibitive, except in the most high-end jobs with a large budget for architectural doors. That is, until now.

Introducing Retail-ready 3-0 x 7-0 Sing Doors

Financed by our success of building high precision Eco-friendly one-of-a-kind warp-free doors that can be guaranteed not to warp, bend, twist or otherwise fail for 50 years (no other door company in the world can do that without having Sing Core inside), we have created a new division at our factory to build standard-sized 3-0 x 7-0 doors with Sing Core inside.

These warp-free flush doors are priced to sell, so that you can now provide the best doors to your retail clientele featuring Sing Core inside at a price point that is attractive and affordable.

Priced for Retail Kick-off Event

We are kicking off this new line of retail-ready doors in the most requested size: 3-0 x 7-0 doors, available for either interior or exterior applications. You also get to choose from paint grade, veneer, or natural wood stave Sing flush doors starting at $xx.xx each, with no minimum order.

Standard lite cut outs are available (8 styles to choose from). Doors with window openings cut require a 10 piece per cut out design minimum order.

Strongest Lightest Weight Doors in the World

Kick My Door

As we kick off this event, inventor Peter Sing invites you to kick his door, which is so strong, “You will break your leg before you crash my core.”

Sing Core is renowned world-wide as the only way to build a lightweight door using high precision (+/- .006 in. tolerance) core material which is stronger than steel pound for pound (660 PSI) for building doors that can be guaranteed not to warp or fail.

Note: Kick doors with Sing Core inside at your own risk.

Ready to Ship Unfinished Doors to You

As always, Sing Core does not finish, provide hardware, or pre-hang doors. Prices are for unfinished door slabs only.

To sweeten the deal even more, we will ship to your company direct. Sing custom doors are only shipped to millworks and custom door manufacturers only, because finishing and creating the ultimate warp-free door depends highly on the craftsmen who create the finished product.

Since these are standard 3-0 x 7-0 sized doors, there is plenty of hardware and retail-ready framing material available over-the-counter, so these doors do not require the same attention to details as our custom-sized doors. The only thing is, we need to trust your skills in finishing the door.

5-year Warp-free Guarantee

Assuming the door is adequately sealed and finished, Sing Core guarantees every one of these doors, both interior and exterior doors, to remain warp-free for 5 years, including full structure warranty.

Now you can order with confidence and at special retail-ready pricing your choice of 3-0 x 7-0 doors with Sing Core inside.

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Door Interior

Applications -> Building Components -> Doors -> Door Links -> Interior Doors

Interior Door Panels

 

It’s so easy to use Sing Panels to make beautiful doors of any size. All Sing Door Panels are the same price, $8 per board foot.  Sing Door Panels have a ten year warranty for internal use. For external use, we offer marine grade plywood. If you need strength, lightweight, insulation, and true flatness, Sing has the answer!

torsion box, sandwich panel, honeycomb panel, lightweight panel

Patented Sing Core: We put a torsion box in the SIP panel to make it better. The other names for our panels include sandwich panel, honeycomb panel and lightweight panel.

How to Buy

 

Sing Door Panels 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.

How to Build

Carriage Doors

Sliding/Pocket Doors

Sliding Glass Doors & French Doors

Interior

Exterior

Overhead

 


 

We offer many different styles of door blanks, when you receive your blank, it is ready for the final millwork touches. Perfect for the DIY projects and our panels are lightweight and easy to attach trim and hardware to give your home the final touch. Available in any size and thickness for your project.

 

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Door Sliding

Applications -> Building Components -> Doors -> Door Links -> Sliding Pocket Doors

Sliding and Pocket Doors

Products > Door > Sliding Door

Gallery

Sliding/Pocket Doors

Sing Honeycomb Oversized Door Finger PushIt’s so easy to use Sing Panels to make beautiful sliding doors of any size. Sing Door Panels have a ten year warranty for internal use. For external use, we offer marine grade plywood. If you need strength, lightweight, insulation, and true flatness, Sing has the answer!

torsion box, sandwich panel, honeycomb panel, lightweight panel

Patented Sing Core: We put a torsion box in the SIP panel to make it better. The other names for our panels include sandwich panel, honeycomb panel and lightweight panel. See our new C Series line of Affordable Barn Door and Sliding Closet Doors.

How to Buy

 

Sing Core door panels 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.

Custom doors without the custom pricing!

Sing Core door panels are available at a fraction of the price of conventional sliding door/pocket door panels. Sing Door Panels are insulated, lightweight, stronger and more dimensionally stable than solid wood panels – at less than half the price!

When using Sing Panels, you design your own door by adding the trim, paint, and hardware. Sing Core door panels are great for millwork shops and door manufacturers. Exclusive pricing is available to distributors and retailers.

 

Door Assembly Instructions: 

You can combine these to make almost any size door you desire. Once your door panels have arrived, place them in the room where they will be installed and do the following:

1. Arrange your door panels on a level plane so that they can be joined precisely.
2. Join the panels in the horizontal position and applying glue in the grooved “biscuit” pocket.
3. Insert biscuit joint into one side of panel, apply glue to groove in second panel that will be attached to the first panel
4. Slide panel so that the other half of the biscuit is inserted into the biscuit groove and apply adequate pressure to the glued area. (We recommend formaldehyde-free, urethane glue)
5. Once all of the panels have been assembled together and the glue has completely dried, your Sing Core door is ready to install.

Check out the tutorial videos at the bottom of this page. Contact us if you have further questions/concerns on how to install our Sing Core door panels.

Order Custom Sizes:

To order custom door sizes, please submit a work order form. We’ll respond to you with a quote within two business days.

Installing a Sliding Factory Door

Step 1: Install the sliding door track.

 

Step 2: Prepare door for hardware installation.

 

Step 3: Install hardware and hang the door to make sure of fit and function.

 

Step 4: Finish and paint the doors.

 

Step 5: Admire your newly install Sing Sandwich Panel Sliding Doors.

 

Gallery    |    Technical Info         |      FAQ    |     Order Form     |     Standard Pricing


 

Case Studies

 

Title: Steam Room Door

Client: Pizza Company

Product: Sing Panels

Challenge:The client needed doors that resist moisture and close securely. He also needed the doors to withstand frequent use at a business.

Sing Solution:Sing Core doors are flat and straight enough to keep humidity from leaving the steam room. Water resistant coating was applied to protect the door, preventing it from warping and rotting.

Customer Quote:

“We had purchased two of your panels to use as sliding doors for one of our steam rooms. To date they are working great.” Kenny B.


 

Title: Children’s Room

Client: Tremain Construction

Location: Washington State

Product: Sing Panels

Challenge: The family needed a large divider for their living room. It needed to be lightweight so that the kids could open and close it easily.

Sing Solution:Sing Core panels are light enough for a small child to move and easy to assemble.  The family finished the doors with chalkboard paint to make it kid-friendly.

Customer Quote:

“As you can see, the photo below was taken right after install and finishing completed, still construction stuff in the area. The other picture is after the owners moved in and their kids started using the door, which is covered with blackboard paint; it becomes a moving mural in the space.” -P

 

chalk wall2

sliding door

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

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Sing Honeycomb Sliding and Pocket Doors

Applications -> Building Components -> Doors -> Sliding Door

Sliding/Pocket Doors

Sing Honeycomb Oversized Door Finger PushIt’s so easy to use Sing Panels to make beautiful sliding doors of any size. Sing Door Panels have a ten year warranty for internal use. For external use, we offer marine grade plywood. If you need strength, lightweight, insulation, and true flatness, Sing has the answer!

torsion box, sandwich panel, honeycomb panel, lightweight panel

Patented Sing Core: We put a torsion box in the SIP panel to make it better. The other names for our panels include sandwich panel, honeycomb panel and lightweight panel. See our new C Series line of Affordable Barn Door and Sliding Closet Doors.

How to Buy

 

Sing Core door panels 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.

Custom doors without the custom pricing!

Sing Core door panels are available at a fraction of the price of conventional sliding door/pocket door panels. Sing Door Panels are insulated, lightweight, stronger and more dimensionally stable than solid wood panels – at less than half the price!

When using Sing Panels, you design your own door by adding the trim, paint, and hardware. Sing Core door panels are great for millwork shops and door manufacturers. Exclusive pricing is available to distributors and retailers.

Door Assembly Instructions:
Due to shipping limitations, our largest panel is 40” x 96”. However, you can combine these to make almost any size door you desire. Once your door panels have arrived, place them in the room where they will be installed and do the following:

1. Arrange your door panels on a level plane so that they can be joined precisely.
2. Join the panels in the horizontal position and applying glue in the grooved “biscuit” pocket.
3. Insert biscuit joint into one side of panel, apply glue to groove in second panel that will be attached to the first panel
4. Slide panel so that the other half of the biscuit is inserted into the biscuit groove and apply adequate pressure to the glued area. (We recommend formaldehyde-free, urethane glue)
5. Once all of the panels have been assembled together and the glue has completely dried, your Sing Core door is ready to install.

Check out the tutorial videos at the bottom of this page. Contact us if you have further questions/concerns on how to install our Sing Core door panels.

Order Custom Sizes:
To order custom door sizes, please submit a work order form. We’ll respond to you with a quote within two business days.

Installing a Sliding Factory Door

Step 1: Install the sliding door track.

 

Step 2: Prepare door for hardware installation.

 

Step 3: Install hardware and hang the door to make sure of fit and function.

 

Step 4: Finish and paint the doors.

 

Step 5: Admire your newly install Sing Sandwich Panel Sliding Doors.

 

Gallery    |    Technical Info         |      FAQ    |     Order Form     |     Standard Pricing


 

Case Studies

 

Title: Steam Room Door

Client: Pizza Company

Product: Sing Panels

Challenge:The client needed doors that resist moisture and close securely. He also needed the doors to withstand frequent use at a business.

Sing Solution:Sing Core doors are flat and straight enough to keep humidity from leaving the steam room. Water resistant coating was applied to protect the door, preventing it from warping and rotting.

Customer Quote:

“We had purchased two of your panels to use as sliding doors for one of our steam rooms. To date they are working great.” Kenny B.


 

Title: Children’s Room

Client: Tremain Construction

Location: Washington State

Product: Sing Panels

Challenge: The family needed a large divider for their living room. It needed to be lightweight so that the kids could open and close it easily.

Sing Solution:Sing Core panels are light enough for a small child to move and easy to assemble.  The family finished the doors with chalkboard paint to make it kid-friendly.

Customer Quote:

“As you can see, the photo below was taken right after install and finishing completed, still construction stuff in the area. The other picture is after the owners moved in and their kids started using the door, which is covered with blackboard paint; it becomes a moving mural in the space.” -P

chalk wall2

sliding door

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