XPS Insulation Board

With its extruded polystyrene (XPS) construction, this board does not absorb water, is not a food source for mold, and is not subject to moisture-related damage and deterioration. An R-Value of 5.0 per inch of thickness makes it an excellent thermal insulator that increases the energy efficiency of your structures. And it retains its insulating properties over time. The board also provides an extra barrier against moisture infiltration. Choose between a square edge (CM) and an interlocking shiplap edge (SL) that helps reduce energy-robbing air leaks at seams and gaps. XPS Insulation Board is ideal for a variety of applications, including below slab, below grade along the foundation, inside basement walls, exterior insulation over wood sheathing, and residing.

Typical Physical Properties
PropertyTest Method
1/2"
Nominal Thickness
3/4"
1"
Thermal Resistance, R-Value1
(ºF-ft²-h/Btu)
ASTM C 518
(@ 75ºF Mean Temperature)
3.0
3.8
5.0
Water Vapor Permeance
(perm)
ASTM E 96
(Procedure A)
0.8
0.8
0.8
Water Absorption
(Max % by Volume)
ASTM C 272
0.1
0.1
0.1
Fire Characteristics2
Flame Spread
Smoke Developed
ASTM E 84/UL 723

10
60-200

10
60-200

10
60-200
Max, Recommended Use
Temp. (°F)

165
165
165


Dimensions / Packaging
Board Dimensions2' x 8'
2' x 8'2' x 8'4' x 8'4' x 8'4' x 8'
Thickness



1/2"
Nominal
Thickness


3/4"
1"


1/2"
Nominal
Thickness
3/4"
1"
Pieces/Bundle
20
14
16
20
14
12
Pieces/Pallet
320
252
192
160
126
96
Square Feet/Pallet
5,120
4,032
3,072
5,120
4,032
3,072


1 Specimens are aged and tested in accordance with the FTC "R-Value Rule" (16 CFR, Part 460) and ASTM C 578 (1" only).

2 These numerical flame spread and smoke ratings are not intended to reflect hazards presented by this material under actual fire conditions.  See UL Classification Certificate A183.


Disclaimer

Residential Applications

Residential Products

Give your homes energy-efficient, water managed walls with GreenGuard.

Our business is to help you build the most protected and durable walls possible. That’s why our residential line is filled with products that help block water and air infiltration and add insulating power. Installing continuous insulation on the wall exterior using our extruded polystyrene (XPS) sheathings and siding underlayments helps eliminate thermal breaks that result from using wood framing and sheathing. And our building wraps block air infiltration and serve as an essential component of water managed walls. When you use GreenGuard products, the result is better energy efficiency and durability for every home you build.

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