Results 1 to 6 of 6
  1. #1
    Join Date
    Jul 2010
    Location
    NC
    Posts
    122

    Default Minimum slope for metal roof

    Came across this metal roof over a deck today. Metal roof does not contact gable roof of manufactured home, but I am wondering if that changes the requirement for minimum slope. Also what is the minimum slope for a metal roof?

    Similar Threads:
    ***IMPORTANT*** You Need To Register To View Images ***IMPORTANT*** You Need To Register To View Images
    Member Benefits1

  2. #2
    Join Date
    Mar 2007
    Location
    Oregon
    Posts
    2,365

    Default Re: Minimum slope for metal roof

    Realistically, any more than 1/4" per foot would okay at all but the most windy times. Since it's just over a deck if it had at least that much I probably wouldn't comment. I've built many of those patio covers over the years (it rains a lot in Oregon ) and they've been fine. Realistically, I slope them more than the bare minimum.

    As for the bare minimum for a metal roof over a house, I'm not sure but I'd bet someone here will know. A standard standing seam metal roof would have to be good down to at least 2:12 I'd think.


  3. #3
    Join Date
    Mar 2007
    Location
    Garland, TX
    Posts
    622

    Default Re: Minimum slope for metal roof

    badair http://www.adairinspection.com Garland, TX 75042 TREC # 4563
    Commercial-Residential-Construction-EIFS-Infrared Thermography
    life is the random lottery of events followed by numerous narrow escapes

  4. #4
    Join Date
    Mar 2007
    Location
    Ormond Beach, Florida
    Posts
    26,248

    Default Re: Minimum slope for metal roof

    Most metal roof panels call for a minimum 4/12 slope.

    Jerry Peck, Construction / Litigation Consultant
    Construction Litigation Consultants, LLC ( www.ConstructionLitigationConsultants.com )
    www.AskCodeMan.com

  5. #5
    Join Date
    Jan 2011
    Location
    Guelph,Ontario
    Posts
    169

    Default Re: Minimum slope for metal roof

    Most any type of roof covering,recommends a 4/12 pitch,in order to be effective.


  6. #6
    W. Craig McDougald's Avatar
    W. Craig McDougald Guest

    Default Re: Minimum slope for metal roof

    While I was a commercial roof estimator, I saw specifications for metal roofs with slopes as low as 3/8" per foot, approved by the Manufacturer.

    Mueller currently accepts 1/2"/12 for "R" panels and 1"/12 for "U" panels, one layer underlayment; no underlayment on lath.

    Their CF panel ("snap-lock" type Standing seam) and AP panel both require 3/12, same underlayment requirements as above.

    Mueller, Inc. - Downloads

    Hope this helps


Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •