Answer
Aug 03, 2025 - 07:42 AM
Polyiso can be glued with a mastic to most surfaces but it must be protected from the elements with siding. It was designed for commercial flat roofs which get very cold in winter and hot in summer. No problem there.
Can it safely be attached with mastic or ??? to an outside wall made of concrete brick?� Outside temperatures range from 50 degrees below zero to 105 degrees above zero in a year's range. Does the wall need to be furred out? Polyiso Insulation Board Insulation
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Open Aug 01, 2025 - 02:27 AM
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Polyiso Insulation Board
Polyiso Rigid Foam useful for all sorts of projects - walls, roofs. (not for use under concrete)
IN STOCK at our warehouse in Fairfield, Iowa
Most are NEW Factory Seconds
Retails for $60 per sheet or more.
4' x 8' and 4' x 4' Sheets:
Thick R-Value Price... See More
View Details
IN STOCK at our warehouse in Fairfield, Iowa
Most are NEW Factory Seconds
Retails for $60 per sheet or more.
4' x 8' and 4' x 4' Sheets:
Thick R-Value Price... See More
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