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Top > Roofing > Technique

Question:

I am building a detached, unheated garage, and I am considering installing a cedar shingle roof. The plan is to apply 15# tar paper over the OSB sheathing, and then install the shingles. I have read on the internet that either 1x3 straping or a "cedar breather" layer should be applied between the tar paper and the shingles to provide ventillation for the underside of the shingles. Is this necessary?

Answer:

Hello, I would recommend this air space to allow the shingles to dry between rains to prevent premature rot. Matt Churchill CP Roofing & Sheet Metal of Ottawa Ltd. 613-821-4455

Answered By: Ormand & Matt Churchill

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