How do I glue foam board to concrete wall?
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Bmc29149169
+1
What adhesives can be use to attach 1/2” pink insulation foamboard to a concrete wall? It needs to instantly grab and keep it there.
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Locktite Power Grab.
Get caulking glue that you put in a metel gun then you squeeze the handle it’s sold we’re caulking is sold look for adhesive for outdoors
Locktite PL300 is specifically for the application you mentioned. But why just 1/2"? It has a very low R value and is not thick enough to be a thermal break (at least 2"). Are you adding something else on top of the 1/2"? If you are building a stud wall and using batt insulation the 1/2" is not the way to go.