For Professionals | Member Login
Find a Professional
  • About Us
    • Member Companies
    • Leadership
    • MRA News
    • Homeowner Testimonials
    • Contact the MRA
    • For Professionals
  • Why Metal Roofing?
    • Benefits and Performance of Metal Roofing
    • Compare Roofing Materials
  • Homeowner Resources
    • Metal Roofing Buyers Guide
    • Metal Resilient Guide
    • Metal Roof Sustainability Guide
    • Above All Else You Need a New Roof eBook
    • Today’s Homeowner Partnership
    • Metal Roofing Visualizer
    • MRA University
    • Member Provided Resources
    • Frequently Asked Questions
    • Inspirational Metal Roofing Projects
    • Upcoming Events
  • Gallery
  • Ask The Experts
    • Energy Efficiency
    • I Have An Existing Metal Roof and Have A Question
    • Installation
    • Is A Metal Roof Right For My House
    • Metal Roofing Benefits
    • Product Selection
    • Other
    • Archive
  • Find a Professional
For Professionals Member Login
Sign Up Log In Add New Topic

TOPIC: I Have An Existing Metal Roof and Have A Question

Water ponding

Return to I Have An Existing Metal Roof and Have A Question

Return to Forum

I recently had a metal roof installed on an older flat roof house. The 43' R panel were attached to purlins which were attached with lag screws through the existing tar roof and plywood underlay, the purlins were graduated creating about 1 foot rise in the 43' length. Butyl tape was applied to the panels. My concern is a small area of ponding created by a metal chimney pipe which had a diameter wide enough to block between two ridges on the paneling. The boot over the bottom of the chimney appears to have been properly installed. My concern is the area about 2'x2' where the water is blocked.
Roy Duff

1/30/2016
Share
Or copy this URL: https://www.metalroofing.com/spirit/comment/20961/find/
Do you know the minimum roof pitch required by the manufacturer for the R Panel you installed? I suspect this is far below it. The butyl will help but I suspect you will fight problems with this installation. I am sorry. You could add additional sealant to the panel overlaps where the water is ponding but basically you're trying to create an aquarium of painted metal. I wish I could be more optimistic. Sorry. Todd Miller
Todd Miller
Isaiah Industries, Inc.

1/31/2016
Share
Or copy this URL: https://www.metalroofing.com/spirit/comment/20962/find/
ponding on any roof system is a bad thing. that being said there is a way to prevent the ponding. e-mail me at [email protected] and I will have a detail e-mailed to you that will solve the problem. how far from the ridge is the pipe penetration? Dick Bus
Dick Bus

1/31/2016
Share
Or copy this URL: https://www.metalroofing.com/spirit/comment/20963/find/

If you would like to reply to this thread, please log in. If you do not have an Ask the Experts forum user account, create one here.

  • About Us
    • Member Companies
    • Leadership
    • MRA News
    • Homeowner Testimonials
    • Contact the MRA
    • For Professionals
    • Subscribe
  • Why Metal Roofing?
    • Benefits and Performance of Metal Roofing
    • Compare Roofing Materials
  • Homeowner Resources
    • Metal Roofing Buyers Guide
    • Metal Resilient Guide
    • Metal Roof Sustainability Guide
    • Above All Else You Need a New Roof eBook
    • Today’s Homeowner Partnership
    • Metal Roofing Visualizer
    • MRA University
    • Member Provided Resources
    • Frequently Asked Questions
    • Inspirational Metal Roofing Projects
  • Gallery
  • Ask The Experts
    • Energy Efficiency
    • I Have An Existing Metal Roof and Have A Question
    • Metal Roofing Benefits
    • Product Selection
    • Other
    • Archive
©2018 Metal Roofing Alliance. All Rights Reserved. Privacy Policy Terms and Conditions