Do I staple the flanges on faced fiber glass insulation to the face of the stud or to the inside of the stud?

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Do I staple the flanges on faced fiber glass insulation to the face of the stud or to the inside of the stud?

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When stapling is necessary in cathedral ceiling projects, always staple insulation to the face of the rafter to maintain the necessary 1″ ventilation space. If Raft-R-Mate baffles have been installed up the entire length of the cavity, then either way is acceptable. In other projects, such as walls, either way is also appropriate.

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