Foam Board Insulation

(Box of 10), 1-1/2" thick x 15" x 48", R-7.5 EPS Foam Board Insulation (50 sqft tot.) for between joists/studs

Box of 10 panels (50sqft total). Each individual panel is 1-1/2" thick x 15" (1.25ft) wide x 48" (4f..

$ 140.95

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(Box of 16), 1" thick x 15" x 48", R-5 EPS Foam Board Insulation (80 sqft total), for between joists/studs

Box of 16 panels (80sqft total). Each individual panel is 1" thick x 15" (1.25ft) wide x 48" (4ft) l..

$ 150.95

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(Box of 20), 3/4" thick x 15" x 48", R-3.75 EPS Foam Board Insulation (100 sqft), for between joists/studs

Box of 20 panels (100sqft total). Each individual panel is 3/4" thick x 15" (1.25ft) wide x 48" (4ft..

$ 140.95

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(Box of 6) 2" thick x 24" x 48", R-10 EPS Foam Board Insulation, 2lb Density, (48 sqft total)

Box of 6 panels (48sqft total). Each individual panel is 2" thick x 24" (2ft) wide x 48" (4ft) long...

$ 145.95

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Expanded PolyStyrene (EPS) foam board insulation is the optimal combination or performance, reliability and price for insulating PEX radiant heated concrete slabs (above and below grade).
Available in two options:
Standard 4ft x 8ft foam board sheets in 1", 2", 3" and 4" thickness - PEX pipe either secured directly to foam with PEX stapler and staples, or secured to the top of rebar or wire mesh (slab reinforcement), which either lays on top of or raised above the foam board.
Pre-formed PEX foam board insulation with knobs for holding the PEX pipe in place. Installation does not require a stapler or staples - the pipe is simply "walked-in".
All insulation panels we sell are 2lb/cu. ft density (25 psi rating - sturdy enough to walk on) and are made in the USA.

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Foam Board Insulation