Underlay on top of shingles: "When 30# felt goes on top of shingles do they ..." - Guest User (3/2/2005) | Roofing over existing roof | Archive

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When 30# felt goes on top of shingles do they nail it on with the same nailing pattern as bare ply or does it only need to be tacked on with a few nails because it's realy only a separation sheet?		Guest User 3/2/2005	Share Or copy this URL: https://www.metalroofing.com/spirit/comment/5496/find/
Generally, the felt manufacturers seem to recommend to using as few fasteners as possible. However, if it is going to be exposed to the weather for any time, it will need more fasteners to keep it from blowing up and tearing. Also, for stability and safety, more fasteners will be needed on steeper roofs as well.		Todd Miller Isaiah Industries, Inc. 3/2/2005	Share Or copy this URL: https://www.metalroofing.com/spirit/comment/5497/find/