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Attaching continuous pitched roof exterior foam

Laurie Hermann | Posted in Green Building Techniques on

Considering 8″ GPS foam over 5/12 roof deck. Long screws through ply or cold roof sleepers into 4x rafters seems easy.  What is the experience with long screws  into 2x rafters…technique, jigs?

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Replies

  1. Zdesign | | #1

    Good luck, putting 14" screws through 10-1/4" SIPs panels into 4-1/2" wide rafters was difficult enough. Make sure to have a square and a person on the inside watching for every miss. Its a good idea to chalk line everything as well.

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