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Sing Structure Grid Specs

Applications -> Building Components -> Doors -> Sing Structure Core Specs

General Specifications

Standard Sing Core composite structure consists of inventor Peter Sing’s reinforced vertical grain torsion box grids at small sizes for increased strength and performance, often compared to honeycomb core, but so much stronger than any other lightweight structure core. This enables door manufacturers to design and build massive doors which have increased dimensional stability.

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

Every Sing Core manufactured door is unfinished (unless specified otherwise) and is guaranteed for structural integrity for 10 years or more. See details on written guarantee that came with your door that has Sing Core inside.

Detailed Specifications:

Scope: Subject to local building codes, the standard Sing reinforced torsion box composite core is featured inside doors 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

Product Description: Patented Sing composite structure core

 

Structure Core Materials: Sing Core composite structure is manufactured using Eco-friendly cold-press process. Composite materials include:

  • Natural vertical wood fiber, with gain orientation vertical (not horizontal)
  • Grid voids are filled with recycled EPS foam (default) or other architecturally specified material
  • Facings to complete the torsion box are wood, or other specified flat building material
  • Formaldehyde-free bonding agent is used for adhesion of all components

Architectural Specifications Substitutes

For information on some of our architectural substitutes click here.

Interior Blocking: Solid wood implants are 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 door prior to the door’s manufacture. (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 composite torsion box door core from factory to your location including proper crating to protect the natural beauty of your door during transport.

Storage and Protection: Store any door with Sing Core inside 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 door frame openings 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 hinging and latching assemblies operate freely and correctly

Add-stiles-and-rails-to-your-sing-door-as-anchor-points-drawingFinishing: The finishing of the Sing Core standard door is the responsibility of the client due to the product being delivered in paint-grade quality unless specified otherwise in writing. Any sealing must be in accordance with manufacturer’s specifications to protect against a variety of environmental conditions as necessary.

  • Edge-band edges to encapsulate Sing Core (see T-molding)
  • 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 door components are exposed
  • Reseal the surface as necessary

Machining: Sing Core doors are easy to work with in the millwork shop for CNC machining or on-site for finishing, sawing, sanding, cutting and fastening. No specialized skills or equipment is necessary, other than standard woodworking tools. Treat Sing Core doors just like you would any other standard door blank.

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 doors 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 doors 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 fiber and/or recycled material.

Warranty: Sing Core professional manufactured doors can be structurally guaranteed and warp-free for 50 years under normal conditions.

Basic Sing Door Spec Drawings: Click here

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 (Double) *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.

 

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Standard 3-0 x 7-0 Door Specs

General Specifications

Standard Sing Core 3 0 7 0 doors 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 standard foam material is recycled rigid EPS foam. A 10-inch natural wood lock block is positioned centered at 37 inches for door knob and locking mechanism placement on both sides of the door. The core material is wood framed by 2-inch natural wood for finishing strength and attaching hardware. The torsion box is completed by adhering an exterior surface material (skin) in your choice of paint grade (Birch ply), wood veneer(s), or natural wood stave. Bonding agent used in adhesion of the entire composite material is formaldehyde-free.

Standard Sing Core 3 0 7 0 Doors include frame perfectly suited for the door of your choice and ready to hang. Specify either 2×4 or 2×6 wall thickness to determine frame size for door installation (not supplied by Sing Core).

Every Sing Core manufactured door is finished to specifications and guaranteed for 5 years for structural integrity.

Detailed Specifications:

Scope: Subject to local building codes, the standard Sing Core door 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

Product Description: Standard 3 0 7 0 door panel manufactured by Sing Core available in 1 3/8” or 1 3/4″ thickness is designed for side-hinges (not supplied).

  • Door component includes paint-grade door panel, wood veneer, or wood stave for 2×4 or 2×6 wall installation

Door Panel Materials: Sing Core standard 3 0 7 0 doors 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 2-inch wood stiles and rails
  • Facings are your choice of paint grade (Birch ply), wood veneer, or natural wood stave
  • Formaldehyde-free bonding agent is used for adhesion of all components

Interior Door: Features R 3.5 per in. insulation, available in 1 3/8″ or 1 3/4″ door thickness.

Exterior Door: Features R 6.5 per in. insulation, available in 1 3/4″ door thickness only

Interior Blocking: Solid wood implant is inserted for door knob and/lock block hard points on both sides of door.

Delivery: Reasonable care is taken to ensure safe transportation of your Sing Core 3 0 7 0 door from factory to door shop for finishing and pick-up or deliver to your location.

Storage and Protection: Store your Sing Core standard 3 0 7 0 door 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 door frame openings 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 hinging and latching assemblies operate freely and correctly

Finishing: The standard finishing and sealing of the Sing Core standard 3 0 7 0 door includes paint grade (Birch ply), wood veneer, or unfinished natural wood stave. Additional finishing options include your specifications at additional charge.

Machining: Sing Core standard 3 0 7 0 doors are easy to work with in the millwork shop for CNC machining or on-site for finishing, sawing, sanding, cutting and fastening. No specialized skills or equipment is necessary, other than standard woodworking tools are necessary. Treat Sing Core doors just like you would any other standard wooden door blank.

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 3 0 7 0 doors feature built-in insulation value with an R3 rating per inch.

Acoustical Performance: Sing Core standard 3 0 7 0 doors have a natural sound-deadening quality for noise control. Standard sound transmission class (STC) is 30.

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 fiber and/or recycled material.

Warranty: Sing Core manufactured doors are structurally guaranteed for 10 years under normal conditions.

 

Basic Sing Door Spec Drawings: Click here

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.

 

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Door Finishes

There are many ways to build large doors with Sing Core inside, the only doors that can be,

Guaranteed Warp-free for 50 Years


When it comes to oversize doors, one door stands out above the rest for high-end applications; see comparison. Look for these features in your door for the most discriminating taste(s):

  • Available in any size
  • Lightweight
  • Strong (stronger than steel pound for pound)
  • Insulated
  • Sound-deadening
  • Guaranteed True Flat
  • Resistant to warp, twist, crack & rot
  • Standard 10-year warranty
  • Professional 50-year warp-free guarantee

For more detailed information on our doors, see our Architectural Specifications.

Though Sing Core Doors are available in nearly any wood species, our standard varieties include:

sing-maple sing-cherry sing-oak sing-vg-fir sing-walnut
MAPLE CHERRY OAK VG FIR WALNUT

Note: Door designs can be modified to meet your specifications and requirements an may include the application and bonding of any flat building material. Please feel free to inquire for more information.

1. Paint Grade Door

2. Wood Grain and Wood Stave Door

3. Hardwood Plywood Door

1 Paint Grade Door

Our most popular door blanks are paint grade, and can be made to your specs including surface materials of,

  • Birch ply (most common)
  • Wood plywood
  • MDO
  • HPL
  • Other material, as specified

 

2 Wood Grain and Wood Stave Door

Besides paint grade for the surface, we also provide solid wood stave laminate on both sides of the sliding door. Wood stave is easy to work with and will last. Your Sing wood stave door will be more high precision than solid wood door (less warping, and twist and crack) due to Sing Core’s extremely high tolerance (+/- .006 inch) and, rigidity and high strength (660+ PSI) and professional grade wood grain and wood stave doors are certified and guaranteed not to warp, bend, twist, or otherwise fail for 50 years.

Sing Core provides hot-press ready door blanks to door manufacturers who add wood veneer on both sides of Sing door blanks which are made of Luan skin or marine grade plywood sandwich with patented Sing Core in the middle, solid wood around 4 edges and wood block implants where needed for hardware.

oversize-panel-edge-glued-together-planks-5ftx10ft Sing-Hardwood-Panels-Variety

Note: Veneer has to be handled very carefully every step of the way during production (we prefer to let the millworks handle this delicate procedure) and it is easy to damage by users over the years (but wood stave can be easily sanded and repaired).

We offer a very good price for wood stave doors, the cost is not much more than wood veneer doors.

3 Hardwood Plywood Door

We could make door with hardwood plywood as an effective way to make super large doors that you can stain any color. Up to 4×8 doors have no seam, but by orienting the grain horizontally, you can achieve a nearly seamless presentation on really big doors or extraordinary size.

Available in any available wood species, most common are Sapele, Oak, and Maple ply.

Sing Hardwood ply door has excellent strength, yet is lightweight, features good insulation and better sound deadening qualities than solid wood plank doors.

 

variety-of-design-options-for-architectural-doors-illustration-sing-core

 

Applications -> Building Components -> Doors -> Door Finishes

 

 

 

Paint Grade Door

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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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Sing Panels with Plumbing and Wire Chase

sing-panel-horizontal-embedded-cable-chase-wire-chase-plumbing-chaseCustom Sing Panels can be manufactured to your architectural specifications which may include special chases for plumbers to route hot and cold water feeds via plumbing or electricians to run electrical wiring, communications and security through a patented Sing panel.

Surface mount conduit and exterior chases can be added to Sing panels as they are, though many users of our patented insulation reinforced torsion box core prefer to use embedded wiring chase of for water supply pre-installed plumbing chase.

Embedded Chases

Embedded chases can be placed at specified locations prior to manufacturing your Sing panel to meet the specific requirement of the job at hand, accommodating communications center needs or the special needs of inplant offices, clean rooms, temporary warehousing, watch towers, guard shacks, portable classrooms, spa expansions, home theaters or any application where running utilities, like electricity, wiring and/or cables or plumbing inside and through your Sing panel may be advantageous.

Common horizontal chases are specified at 16 inches and 45 inches from the base, while the most common location for a vertical chase is in the center of the Sing panel. Regardless, every Sing panel is custom manufactured in our factory, and we can have your wire chase or plumbing pre-installed within your panels at any location specified.

How to Specify Wire Chase Locations

sing-panel-embedded-cable-chase-wire-chase-plumbing-chaseIt is easy to have your embedded chases pre-installed at the proper locations. All you have to do is to be certain to disclose the precise locations and sizes of your wire chase (plumbing chase or cable chase). We will provide you with an architectural drawing of your panel before your custom Sing panel is built for you to confirm the chase’s location.

No Loss of R Value

To preserve the R-value of your Sing panel it is advisable to have the cable chase filled with spray foam insulation after pulling the wires or routing the plumbing through the embedded channels. Likewise, if a channel is not used, it should also be filled with foam insulation prior to final assembly, unless insulation properties are not necessary for your application.

Panel Chase Options

Although many options abound for electricians and plumbers to install access to services, another popular method includes running cable, wire and plumbing through panel connectors that run the length of your standard Sing panels, or alternatively running services through the floor.

Many creative options are available for adding access to water, electricity and communications without having the necessity of pre-installed chases being embedded in your Sing panels.

 

 

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Standard Pre-hung French Door Specs

General Specifications

Standard insulated French door pre hung door marine grade plywood fiberglass aluminumStandard Sing Core pre-hung doors 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 standard foam material is recycled rigid EPS foam. A 10 inch natural wood lock block is positioned centered at 37 inches for door knob and locking mechanism placement. The core material is wood framed by 1.5 inch natural wood for finishing strength and attaching hardware. The torsion box is completed by adhering an exterior surface material (skin) in your choice of marine grade plywood, fiberglass (FRP) or aluminum. Bonding agent used in adhesion of the entire composite material is formaldehyde-free.

Standard Sing Core Pre-hung Doors include frame perfectly suited for the door of your choice and ready to hang. Specify either 2×4 or 2×6 wall thickness to determine frame size for door installation.

Every Sing Core manufactured door is finished to specifications and guaranteed for 10 years for structural integrity.

Detailed Specifications:

Scope: Subject to local building codes, the standard Sing Core door 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

Product Description: 1.5” or 2.25″ side-hinged door panel manufactured by Sing Core with frame, pre-hung.

  • Door component includes paint-grade door panel and frame for 2×4 or 2×6 wall installation

Door Panel Materials: Sing Core doors 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 wood stiles and rails
  • Facings are your choice of marine grade plywood (1/4 inch), 0.09 fiberglass (FRP) or aluminum (.62)
  • Formaldehyde-free bonding agent is used for adhesion of all components

Interior Blocking: Solid wood implant is inserted for door knob and/lock block hard points.

Glass Insert:

  • Single lite opening
  • Dual pane clear tempered glass insert
  • Glass dimensions: 32″ French door =  64-3/4″ x 18″,  34″ French door =  64-3/4″ x 20″,  36″ French door = 64-3/4″ x 22″

Pre-hung Includes:

  • Preassembling of jamb and threshold
  • Mortised and attached hinges
  • 3º bevel on lock side
  • Door is fit and installed into the jamb

Delivery: Reasonable care is taken to ensure safe transportation of your Sing Core door from factory to door shop for finishing and pick-up or deliver to your location.

Storage and Protection: Store your Sing Core door 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 door frame openings 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 hinging and latching assemblies operate freely and correctly

Finishing: The standard finishing and sealing of the Sing Core pre-hung standard door includes Marine grade plywood is paint grade, fiberglass in pre-primed, and aluminum is untreated. Additional finishing options include your specifications at additional charge.

Machining: Sing Core doors are easy to work with in the millwork shop for CNC machining or on-site for finishing, sawing, sanding, cutting and fastening. No specialized skills or equipment is necessary, other than standard woodworking tools. Treat Sing Core doors just like you would any other standard door blank.

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 doors feature built-in insulation value with an R3 rating per inch.

Acoustical Performance: Sing Core standard doors have a natural sound-deadening quality for noise control. Standard sound transmission class (STC) is 30*.

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 fiber and/or recycled material.

Warranty: Sing Core manufactured doors are structurally guaranteed for 50 years under normal conditions.

Basic Sing Door Spec Drawings: Click here

 

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.

 

No Comments

Standard Pre-hung 6 Panel Door Specs

General Specifications

Standard insulated 6 panel door pre hung door marine grade plywood fiberglass aluminumStandard Sing Core pre-hung doors 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 standard foam material is recycled rigid EPS foam. A 10 inch natural wood lock block is positioned centered at 37 inches for door knob and locking mechanism placement. The core material is wood framed by 1.5 inch natural wood for finishing strength and attaching hardware. The torsion box is completed by adhering an exterior surface material (skin) in your choice of marine grade plywood, fiberglass (FRP) or aluminum. Bonding agent used in adhesion of the entire composite material is formaldehyde-free.

Standard Sing Core Pre-hung Doors include frame perfectly suited for the door of your choice and ready to hang. Specify either 2×4 or 2×6 wall thickness to determine frame size for door installation.

Every Sing Core manufactured door is finished to specifications and guaranteed for 10 years for structural integrity.

Detailed Specifications:

Scope: Subject to local building codes, the standard Sing Core door 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

Product Description: 1.5” or 2.25″ side-hinged door panel manufactured by Sing Core with frame, pre-hung.

  • Door component includes paint-grade door panel and frame for 2×4 or 2×6 wall installation

Door Panel Materials: Sing Core doors 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 wood stiles and rails
  • Facings are your choice of marine grade plywood (1/4 inch), 0.09 fiberglass (FRP) or aluminum (.62).
  • 6 true raised panels and trim are added to surface material without compromising strength or performance
  • Formaldehyde-free bonding agent is used for adhesion of all components

Interior Blocking: Solid wood implant is inserted for door knob and/lock block hard points.

Delivery: Reasonable care is taken to ensure safe transportation of your Sing Core door from factory to door shop for finishing and pick-up or deliver to your location.

Storage and Protection: Store your Sing Core door 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 door frame openings 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 hinging and latching assemblies operate freely and correctly

Finishing: The standard finishing and sealing of the Sing Core pre-hung standard door includes Marine grade plywood is paint grade, fiberglass in pre-primed, and aluminum is untreated. Additional finishing options include your specifications at additional charge.

Machining: Sing Core doors are easy to work with in the millwork shop for CNC machining or on-site for finishing, sawing, sanding, cutting and fastening. No specialized skills or equipment is necessary, other than standard woodworking tools. Treat Sing Core doors just like you would any other standard door blank.

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 doors feature built-in insulation value with an R3 rating per inch.

Acoustical Performance: Sing Core standard doors have a natural sound-deadening quality for noise control. Standard sound transmission class (STC) is 30*.

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 fiber and/or recycled material.

Warranty: Sing Core manufactured doors are structurally guaranteed for 10 years under normal conditions.

Basic Sing Door Spec Drawings: Click here

Door Specifications
Door Size
Actual Unit Size
Rough Opening Size
32″ x 80″ 33-3/4″ x 81-1/2″ 34-1/4″ x 82″
34″ x 80″ 35-3/4″ x 81-1/2″ 36-1/4″ x 82″
36″ x 80″ 37-3/4″ x 81-1/2″ 38-1/4″ x 82″

 

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.

 

No Comments

Standard Pre-hung Flush Door Specs

General Specifications

Standard insulated flush door pre hung door marine grade plywood fiberglass aluminumStandard Sing Core pre-hung doors 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 standard foam material is recycled rigid EPS foam. A 10 inch natural wood lock block is positioned centered at 37 inches for door knob and locking mechanism placement. The core material is wood framed by 1.5 inch natural wood for finishing strength and attaching hardware. The torsion box is completed by adhering an exterior surface material (skin) in your choice of marine grade plywood, fiberglass (FRP) or aluminum. Bonding agent used in adhesion of the entire composite material is formaldehyde-free.

Standard Sing Core Pre-hung Doors include frame perfectly suited for the door of your choice and ready to hang. Specify either 2×4 or 2×6 wall thickness to determine frame size for door installation.

Every Sing Core manufactured door is finished to specifications and guaranteed for 10 years for structural integrity.

Detailed Specifications:

Scope: Subject to local building codes, the standard Sing Core door 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

Product Description: 1.5” or 2.25″ side-hinged door panel manufactured by Sing Core with frame, pre-hung.

  • Door component includes paint-grade door panel and frame for 2×4 or 2×6 wall installation

Door Panel Materials: Sing Core doors 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 wood stiles and rails
  • Facings are your choice of marine grade plywood (1/4 inch), 0.09 fiberglass (FRP) or aluminum (.62).
  • Formaldehyde-free bonding agent is used for adhesion of all components

Interior Blocking: Solid wood implant is inserted for door knob and/lock block hard points.

Delivery: Reasonable care is taken to ensure safe transportation of your Sing Core door from factory to door shop for finishing and pick-up or deliver to your location.

Storage and Protection: Store your Sing Core door 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 door frame openings 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 hinging and latching assemblies operate freely and correctly

Finishing: The standard finishing and sealing of the Sing Core pre-hung standard door includes Marine grade plywood is paint grade, fiberglass in pre-primed, and aluminum is untreated. Additional finishing options include your specifications at additional charge.

Machining: Sing Core doors are easy to work with in the millwork shop for CNC machining or on-site for finishing, sawing, sanding, cutting and fastening. No specialized skills or equipment is necessary, other than standard woodworking tools. Treat Sing Core doors just like you would any other standard door blank.

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 doors feature built-in insulation value with an R3 rating per inch.

Acoustical Performance: Sing Core standard doors have a natural sound-deadening quality for noise control. Standard sound transmission class (STC) is 30*.

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 fiber and/or recycled material.

Warranty: Sing Core manufactured doors are structurally guaranteed for 10 years under normal conditions.

Basic Sing Door Spec Drawings: Click here

Door Specifications
Door Size
Actual Unit Size
Rough Opening Size
32″ x 80″ 33-3/4″ x 81-1/2″ 34-1/4″ x 82″
34″ x 80″ 35-3/4″ x 81-1/2″ 36-1/4″ x 82″
36″ x 80″ 37-3/4″ x 81-1/2″ 38-1/4″ x 82″

 

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.

 

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Sing Reinforced Structural Insulated Panels Specs

SING REINFORCED STRUCTURAL INSULATED PANELS

PART 1 – GENERAL

1.1 RELATED DOCUMENTS

A. Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 1 Specification Sections, apply to this Section.

1.2 SUMMARY

A. This Section includes patented Sing Reinforced Structural Insulated Panels (SRSIP).

B. Related Sections include the following:

1. Rough Carpentry
2. Timber Framing

1.3 PERFORMANCE REQUIREMENTS

A. Structural Performance: Provide SRSIPs capable of withstanding design loads including dead load, live loads, wind loads and seismic loads. Design loads shall be in compliance with the requirements of the local Building Code.

1.4 SUBMITTALS

A. Product Data: SRSIP manufacturer’s product literature including structural properties and installation instructions.

B. Shop Drawings: Show fully dimensioned fabrication and installation details for SRSIPs. Shop drawings shall be prepared under the supervision of a Professional Engineer.

C. Evaluation report.

1.5 QUALITY ASSURANCE

A. SRSIP Manufacturer shall be a manufacture licensed by patent holder.

B. Structural Design: A Professional Engineer shall perform a structural analysis and design of the SRSIP assemblies in accordance with the design loads.

C. Installation Contractor must have experience on projects of similar size and scope. Lead installer / supervisor shall have a minimum of 3 years experience installing SRSIPs or have completed a certifying curriculum at a dedicated SRSIP training program such as those provided by Lightweight University or equivalent.

1.6 DELIVERY, STORAGE, AND HANDLING

A. SRSIPs shall be kept dry and protected with waterproof covering during transportation and storage.

B. Exercise care to prevent crushing of SRSIP edges with cargo hold down straps during transportation.

C. Carefully load and unload SRSIPs from trucks to prevent damage to the panels.

D. Store SRSIPs elevated off of the ground on sleepers.

E. Take care in handling SRSIPs to prevent delamination. Do not lift panels by the top skin.

1.7 COORDINATION

A. Time delivery and installation of SRSIPs to avoid extended on-site storage and to avoid delaying progress of other trades whose work must follow the installation of SRSIPs.

PART 2 – PRODUCTS

2.1 SING REINFORCED STRUCTURAL INSULATED PANELS (SRSIP)

A. Oriented Strand Board (OSB): 7/16” thick minimum.

B. Core: [Expanded Polystyrene (EPS) shall comply with ASTM C578 and shall have a minimum density of 0.9. pcf.] [polyurethane foam core] [extruded polystyrene (XPS) shall comply with ASTM C578 and shall have a minimum density of 1.3 pcf]

C. Adhesive: Formaldehyde-free waterproof adhesive

2.2 LUMBER

A. Grade and Species: Visually graded dimension lumber No. 2 or better of any of the following species:

1. Spruce-Pine-Fir; NLGA
2. Hem-Fir (North); WCLIB or WWPA
3. Douglas Fir – Larch; WCLIB or WWPA
4. Southern Pine; SPIB

B. Lumber shall be kiln dried to not more than 19% moisture content

C. Lumber shall be clearly marked with grade stamp of grading agency.

D. Engineered wood products shall be used where required for structural adequacy.

1. Laminated Veneer Lumber (LVL)
2. Parallel Strand Lumber (LSL)
3. Laminated Strand Lumber (LSL)

2.3 FASTENERS

A. Cam Locks.

B. Panel Screws.

C: Adhesives.

2.4 FABRICATION

A. Cut SRSIPs to accurate lengths, angles, and sizes to produce close fitting joints.

B. Remove foam as required to accommodate wood blocking and splines.

C. Provide electrical wiring chases in foam core where required.

PART 3 – EXECUTION

3.1 PREPARATION

A. Examine foundations, sills, framing and other surfaces to receive SRSIPs and verify that conditions are suitable for the installation of SRSIPs. Report any unsatisfactory conditions to the Contractor. Do not proceed with installation until unsatisfactory conditions have been corrected.

3.2 INSTALLATION

A. Hoist SRSIPs in place by lifting equipment suited to size of panels. Exercise care to prevent damage to SRSIPs.

B. Install SRSIPs plumb, square and true to line.

C. Fill all panel joints with expanding urethane foam or seal by other approved method.

D. Repair or replace all damaged SRSIPs.

E. Remove debris from project site and legally dispose of debris.

END OF SECTION