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R- 7.8 , 2-in x 4-ft x 8-ft Faced Polystyrene Board Insulation

Perma "R" Products R- 7.8 , 2-in x 4-ft x 8-ft Faced Polystyrene Board Insulation

4.5
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209 Questions
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How can this be cut for a curve?


hot knife, cuts like going through butter

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I have used a sharp knife to cut a curve which was time consuming. Then I used my jig saw with a scroll blade which was easier and quicker.

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String and pen. Draw the line and cut with utility knife

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