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SIKSUKR · 03-31-2009, 08:51 AM

I'm sure that anything that keeps your roof wet or moist might eventually want to migrate to the sheathing under the shingles.Of course most roof systems have a vapor barrior but every nail hole is a potential moisture wick.I would definately not want moss on my shingles.

03-31-2009, 08:51 AM	#11
SIKSUKR Senior Member Join Date: Apr 2004 Posts: 5,075 Thanks: 215 Thanked 903 Times in 509 Posts	I'm sure that anything that keeps your roof wet or moist might eventually want to migrate to the sheathing under the shingles.Of course most roof systems have a vapor barrior but every nail hole is a potential moisture wick.I would definately not want moss on my shingles. __________________ SIKSUKR Last edited by SIKSUKR; 04-01-2009 at 07:05 AM.