Perma "R" Products R- 7.8 , 2-in x 4-ft x 8-ft Faced Polystyrene Board Insulation
4.5
209 Questions
Read All Questions & AnswersBest way to cut and trim
4
Hot knife.
Was this Answer Helpful ?The old non serated edge large kitchen knife in the tool box made nice clean straight cuts. Take your time, score it first with about a 1/2" deep cut then a little more then finally through. Just takes a couple of minutes. Easy and did not have to plug the knife in.
Was this Answer Helpful ?With a straight edge and a sawtooth knife or table saw with a 100 tooth blade and RIP fence of course!
Was this Answer Helpful ?The best way to cut this insulation board is with a straight edge and a razor knife.
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