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Tin Roof Over Shingles

Posted by EJ Sandquist on November 9th, 1999 07:37 PM
In reply to Tin roof over shingles by Kim Tate on November 7th, 1999 10:37 AM [Go to top of thread]

Hi Kim,

There is no problem with doing what you want to do. The existing shingle roof will act as an underlayment and secondary waterproofing element of the roof. Be sure the new tin roof is fastened through the high points on the panels and not down in the valleys. Also, be sure the contractor or person doing the work uses fasteners (nails or screws) with rubber washers and that the rubber is exterior grade such as EPDM or neoprene.

E.J. Sandquist

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