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Swinging Doors the Best Hinged Door

Sing Core has been assisting the best high end custom door manufacturers create the most magnificent swinging doors using the best hinged door known. Only the best, most exclusive upscale architects, designers and ultra-custom door makers know if you want the best hinged door for the highest degree of precision, performance and prestige, you want your door to have Sing Core inside.

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

Hinged Door Warp-free Hinged Door Guarantee

Building a door with Sing Core inside is the only way to create a door that can be guaranteed not to warp, bend, twist or otherwise fail for 50 years, including a full 50 year structure strength warranty. While other doors may be guaranteed for 10 years, most or one or two years, if they are guaranteed at all. Doors over seven or eight feet tall are normally excluded from any warranty due to their tendency to warp the next season.

With Sing Core you can create Eco-friendly swinging hinged doors that are insulated, lightweight, high strength. No need to add extra door hardware to help keep the door straight over time (door manufacturers add extraneous hinges in an effort to keep the door straight). But warp-prone hinged doors, even if they have a full length piano hinge, still warp on the side that latches, and a door that does not operate and cannot be secured is not much of a door at all.

Airtight Hinged Door Seals

Maintaining a perfect airtight seal is of primary importance, plus the added insulation characteristics of any door with Sing Core inside increases climate control while adding sound-deadening qualities not found in other doors, especially in high end laboratories, industrial environments, commercial applications, and homes.

Superior Exterior Hinged Door Applications

Exterior hinged doors often cause problems (especially if they are over 7 ft tall) because one side of the door faces the interior of the structure while the other side of the door faces the elements.

Hinged Panel Doors

Panel doors are assembled of wood (or other material) with separate pieces oriented in cross grain patterns to help mitigate the potential door warping. While this method is somewhat effective, the resulting door does not offer much in the way of high precision, insulation, or performance, but they are pretty. The craftsmanship of a well-made stile and rail door is very elegant and the way the different pieces are joined together offers a certain intrigue when examining the door, especially if it is a wood grain door. But consider the Sing solution…

Sing Raised Panel Door

The Eco-friendly Sing raised panel door is a huge improvement over the traditional stile and rail door, in that it is extremely high-precision (+/- .06 in.) lighter in weight (a fraction of the weight of those solid wood panel doors), insulated for climate control and sound deadening, and stronger than steel pound of pound enabling professional raised panel doors with Sing Core inside to be guaranteed warp-free (will not warp, bend twist, cup or otherwise fail) for 50 years, including full structure warranty. No other door can do all that, and be so versatile.

While a Sing raised panel door can look just like a standard 6 panel door made via the old-fashioned stile-and-rail door manufacturing method, making a raised panel door with Sing Core inside is quite different.

The most important component of the Sing raised panel door is the patented Sing Core material which consists of a hybrid composite of vertical grain torsion box grid filled with rigid recycled foam insulations sandwiched between two stress skins and superiorly bonded with formaldehyde-free adhesive. This gives your door the strength and integrity you’ve always dreamed about. Install the door, and no worries about service calls due to door warp.

The Best Millworks and Custom Door Manufacturers

The best millworks and custom door manufacturers know that the only way to deliver a truly premium product to their high end clientele is to provide them with doors which they make with Sing Core inside, enabling them to guarantee their doors for 50 years, backed by Sing Core’s written guarantee. We take all the hassle and risk out of delivering the best base materials for the best companies and their best customers, bar none.

The Best Flush Doors

Sing Core provides door manufacturers with the best door blanks and flush doors to be used as the best canvases to showcase the artistry and craftsmanship of the finest custom door makers in the world.

Again, if you want to make your Sing flush door look like a panel door, like, say a 6 panel door, the door artisan simply adds the 6 panels and trim to the door’s surface. This is a common approach, especially in door replacement of historically preserved architecturally challenging maintenance and upgrades.

Sing doors are often considered the best replacement doors, especially in exterior door replacement due to the weatherproof door’s characteristics.

Your flush doors with Sing Core inside can easily be modified by adding custom molding, trim or cutting custom lite  cutouts for glass installation in any shape at any location to achieve your desired results.

“How can I get doors with Sing Core inside?”

It’s easy. All you have to do is to contact your favorite millwork or custom door manufacturer and tell them what kind of door you want, including the height, width, thickness, style and look you want (you can even bring in a picture of one that you’ve found in a book, magazine, or on the Internet. They will work in concert with Sing Core to make all your door dreams come true.

You can be among the growing many who can proudly proclaim that their doors have, “Sing Core inside.”

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Basic Sing Door Spec Drawings

The following are standard drawings of doors which you can print and/or modify for marking up your specifications as an alternative to paying for professional shop drawings.

Hinged Door

Pivot Door

Sliding Door

Splined Door

Doors with Professional Sing Core inside are the only Eco-friendly doors that can be guaranteed to remain warp-free for 50 years, including full structure warranty.

Thank you for trusting Sing Core with all your lightweight high-strength door needs for any type or style of door in any size made of any flat building material.

 

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Large Cold Rolled Steel Door Modular Assembly Specifications

General Specifications

 

Standard Sing Core Cold Rolled Steel Door Blanks are manufactured with patented Sing Core material as the base interior substrate of the door. The Sing Core substrate material is created using a vertical grain natural wood torsion box design while the traditionally empty voids are filled wall to wall with recycled foam. The foam material is available in various forms depending on your specification. The default is recycled EPS foam. Natural wood lock blocks can be positioned at locations as necessary for locking mechanism placement or as anchor points. The core material is framed by 1.25-inch wood stiles and rails for finishing strength and attaching hardware. The torsion box is completed by adhering 16 gauge cold rolled steel as exterior material (skin) according to your specifications.

Cold Rolled Steel Door Surface Material

The door blank surface material is made of 16 gauge cold rolled steel unless otherwise specified. Bonding agent used in adhesion of the entire composite material is formaldehyde-free.

Click here for tips on How to Create the Right Sing Panel for your specific project.

Every Sing Core manufactured door blank is unfinished (unless specified otherwise) and professional grade is guaranteed for 50 years for warp-free and structural integrity.

Detailed Specifications:

Scope: Subject to local building codes, the standard Sing Core door blank is intended for use in:

  • Single family dwelling interior applications
  • Multifamily dwelling, low-rise professional office, library and low-rise motel interior applications
  • Lighter use industrial building and factory, hotel and retail sales building interior applications

 

Cold Rolled Steel Door Materials: Sing Core cold rolled steel door blanks are manufactured using Eco-friendly cold-press process. Composite materials include:

  • Sing Core vertical wood-grain torsion substrate filled with recycled EPS foam
  • Core material is framed with solid wood stiles and rails
  • Facings are 16 gauge cold rolled steel
  • Formaldehyde-free bonding agent is used for adhesion of all components

Large Door Component Assembly: The largest doors (see 10×10 example drawing tot he right) may not be easily transported from the factory to the job site. In cases such as these doors are divided into two or more modular components and joined together on site using patented Sing biscuit joining method. This method results in a near seamless joining of two or more door blanks without compromising flatness or structural integrity.

Architectural Specifications Substitutes

For information on some of our architectural substitutes click here.

Interior Blocking: Solid wood implants can be inserted as lock blocks or anchor points. Also additional stiles (vertical wood implants) or rails (horizontal wood implants) can be positioned at any desired location inside the cold rolled steel door. (Note: Depending on your expectations, solid wood implants should be supported by at least 12 inches of Sing Core material to maintain true flatness.)

Delivery: Reasonable care is taken to ensure safe transportation of your Sing Core cold rolled steel door from factory to your location including proper crating to protect the natural beauty of your cold rolled steel doors during transport.

Storage and Protection: Store your Sing Core cold rolled steel doors in an upright position and allow to acclimate to room temperature following shipment receipt or prior to finishing or installation.

Preparation: Per manufacturer’s specifications, ensure that openings or attachment walls are constructed plumb, true and level prior to installation. Select fasteners of adequate type, number and quality to assure proper function.

Installation: Installer shall be specialized in the installation of the type of work that is associated with the project and will comply with manufacturer’s installation policies and procedures to ensure proper end use.

Verify that attachment, hinging and latching assemblies operate freely and correctly

Finishing: The finishing of the Sing Core standard cold rolled steel doors is the responsibility of the client due to the product being delivered in unfinished condition unless specified otherwise in writing for use in interior applications only. Any exterior use must be approved in advance to avoid warranty exception and sealing must be in accordance with manufacturer’s specifications to protect against a variety of environmental conditions as necessary. In reference to exterior applications:

  • Seal all 6 surfaces with two coat minimum on operable panel(s)
  • Finishing or re-finishing must be completed following acclimatization and installed within 7 days
  • Avoid finishing after rain (or damp) or during periods of higher than average humidity
  • At least once a year, conduct periodic inspections of coating to ensure no wall panel components are exposed
  • Reseal the surface as necessary

Machining: Sing Core cold rolled steel doors are easy to work with in the metal shop for machining or on-site for finishing, and fastening.

Strength Performance: Patented Sing Core has an unsurpassed strength as compared to other lightweight substrate materials tested at 660 PSI (based on 2″ x 2″ grids and 3/4″ thick) for superior structural integrity and is resistant to warp, twist and crack when compared to other materials.

Light Weight Performance: Sing Core weighs much less than other traditional building materials, as much as 50% less; or more, as little as 4 lbs. per sq. ft. yet sustainable and true green technology.

Insulation Performance: Standard Sing Core door blanks feature built-in insulation value with an R3 (can be upgraded to to R6.5 or more) rating per inch, depending on architect’s specifications.

Acoustical Performance: Sing Core standard wall panels have a natural sound-deadening quality for noise control. Standard sound transmission class (STC) is 30*. Additional noise control specifications can be met at the behest of the customer or designer and must be noted in advance.

Eco-friendly: Sing Core is manufactured using natural wood fibers, no formaldehyde, or toxic chemicals, is created using less energy than any other core material with little or no waste. The structure of Sing Core is 100% renewable (nature-grown) clean wood fiber and/or recycled material.

Warranty: Sing Core standard door blanks come with a 10-year warranty, while professional manufactured door blanks can be structurally guaranteed and warp-free for 50 years under normal conditions.

Basic Sing Door Spec Drawings: Click here

variety-of-design-options-for-architectural-doors-illistration-sing-core
Custom-cut Window/Lite Openings: Lite openings for glass inserts can be custom cut per your specifications (drawings above show examples of standard openings) for glass insertion.

Door Specifications

Door Width
Rough Opening Width
Rough Opening Height 6/8
2/0 (Single) 26″ 82-1/2″
2/4 (Single) 30″ 82-1/2″
2/6 (Single) 32″ 82-1/2″
2/8 (Single) 34″ 82-1/2″
3/0 (Single) 38″ 82-1/2″
4/0 (Double) *50″ 82-1/2″
4/8 (Double) *58″ 82-1/2″
5/0 (Double) *62″ 82-1/2″
5/4 (Double) *66″ 82-1/2″
6/0 (Doulble) *74″ 82-1/2″

See also: Door Technical Information

Appearing regularly in Contemporary Architecture Design

* Note: STC rating varies according to size, thickness, skin, and other factors. Sing Core does not rate doors, although we are fortunate enough to have one of the best sound testing labs in the world, here in the Pacific Northwest. If you require a specific STC rating, Sing Core can build a door to your architectural specifications and have the resulting door tested at our rating facility for an official rating.