Available in United States
With a planed surface, STYROFOAM™ Brand Tapered DECKMATE™ Plus FA Insulation is designed for use in fully adhered conventional low-slope roof applications. The tapered insulation provides a positive slope to improve roof drainage. The Type IV extruded polystyrene foam insulation boards can be installed directly on structural steel decks beneath a non-bituminous sheet membrane, eliminating the need for a thermal barrier.
Building Code Compliance
Complies with ASTM C578 Type IV. Meets IBC/IRC requirements for foam plastic insulation. See ESR-2142, BOCA-ES RR 21-02, ICBO-ES ER-2257, ICBO-ES ER 5155. UL Classified, see Classification Certificate D369.
3D Model Using STYROFOAM™ Brand DECKMATE™ Plus Roof Insulation – Steep Slope Roof – Metal Framing (157KB) This 3D model uses Google SketchUp. Please visit the Google Web site to download SketchUp.
STYROFOAM™ Brand DECKMATE™ Plus CAD Details
Related Information
A Great Angle on Flat Roofs – STYROFOAM™ Brand Tapered DECKMATE™ Plus FA Insulation Brochure (196KB PDF)
Fully Adhered Roofs Stay Put With STYROFOAM™ Brand DECKMATE™ Plus FA and INSTA STIK™ Quik Set (160KB PDF)
Rigid Polystyrene Roof Board Foam Insulation – Fully Adhered STYROFOAM™ Brand DECKMATE™ Plus FA Guide Specification (17KB PDF)
Conventional Roof Sell Sheet – Performance, Strength and Comfort (1.03MB DOC)
20-Year Limited Thermal Warranty (54KB DOC)
STYROFOAM™ Brand DECKMATE™ and DECKMATE™ Plus FA Reuse Warranty (114KB DOC)
STYROFOAM™ Brand XPS for Conventional Roofs Sell Sheet (556KB PDF)
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U.S. Commercial
STYROFOAM™ Brand Tapered DECKMATE™ Plus FA Insulation has a planed surface and is designed for use in fully adhered conventional low-slope roof applications. The tapered insulation provides a positive slope to improve roof drainage. It can be installed directly on structural steel decks beneath a non-bituminous sheet membrane, eliminating the need for a thermal barrier. See table below for slopes of panels.
| Nominal Board Thickness(1), in | R-Value(2) | Board Size, ft | Edge Treatment | Min Compressive Strength(3), psi |
| 1.5 | 7.5 | 2 x 8 | Square Edge | 25 |
| 2.0 | 10.0 | 2 x 8 | Square Edge | 25 |
| 2.5 | 12.5 | 2 x 8 | Square Edge | 25 |
| 3.0 | 15.0 | 2 x 8 | Square Edge | 25 |
| 4.0 | 20.0 | 2 x 8 | Square Edge | 25 |
|
(1) Not all product sizes are available in all regions. (2) R means resistance to heat flow. The higher the R-value, the greater the insulating power. R-values are expressed in ft2•h•°F/Btu. R-value determined by ASTM C518. (3) Vertical compressive strength is measured at 10% deformation (5% for STYROFOAM™ Brand PLAZAMATE™ Insulation and for STYROFOAM™ Brand HIGHLOAD 40, 60 and 100 Insulation products) or at yield, whichever occurs first. Since STYROFOAM™ Brand Extruded Polystyrene Foam and Dow polyisocyanurate insulation products are visco-elastic materials, adequate design safety factors should be used to prevent long-term creep. For static loads, 3:1 is suggested. For dynamic loads, 5:1 is suggested. |
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| Slopes for STYROFOAM™ Brand Tapered DECKMATE™ Plus FA Insulation | ||||
| A | B | C | D | |
|
1/8" Slope Nominal Board Thickness, in |
1/2 – 3/4 | 3/4 – 1 | 1 – 1-1/4 | 1-1/4 – 1-1/2 |
| E | F | |||
|
1/4" Slope Nominal Board Thickness, in |
1/2 – 1 | 1 – 1-1/2 | – | – |
| G | ||||
|
1/2" Slope Nominal Board Thickness, in |
1/2 – 1-1/2 | – | – | – |
07 22 16 Roof Board Insulation (Conventional Membrane Systems)
07 50 00 Conventional Membrane Roofing Insulation