Join the MRA | Member Login
Find a Professional
  • Why Metal Roofing?
    • About MRA
    • Benefits of Metal Roofing
    • Compare Roofing Materials
    • Homeowner Testimonials
    • Inspiring Metal Roofing Projects
  • Homeowner Resources
    • Metal Roofing Buyers Guide
    • Resilient Housing Guide
    • Metal Roof Sustainability Guide
    • Above All Else You Need a New Roof eBook
    • MRA News
    • Member Provided Resources
    • 3rd Party Articles
    • Frequently Asked Questions
    • Preparing for Hurricane Season
  • Gallery
  • Visualizer
  • Ask The Experts
    • Energy Efficiency
    • Existing Metal Roof Questions
    • Installation
    • Is A Metal Roof Right For My House
    • Metal Roofing Benefits
    • Product Selection
    • Other
    • Archive
  • Find a Professional
Join the MRA Member Login
Sign Up Log In Add New Topic

TOPIC: Installation

Metal roof over foam roof

Return to Installation

Return to Forum

I have a house with an existing polyurethane roof that I want to place a new metal roof over since to refinsish the poly roof is too expensive. The pitch is pretty shallow maybe 2-12. The roof is water tight but showing sun damage, and has divits from hail storm damage. Fairly smooth other than the divits, some are 1/4-1/2 inch deep. Is it possible to put the metal roof over the existing roof? What are my best options? Trying to keep costs low if possible. Thank you.
Steve Agius

4/13/2012
Share
Or copy this URL: https://www.metalroofing.com/spirit/comment/17282/find/
You can probably put decking or a heavy recovery board over the foam and then install a metal roof that is designed for that low pitch. I would not apply direct over the foam. Todd Miller
Todd Miller
Isaiah Industries, Inc.

4/18/2012
Share
Or copy this URL: https://www.metalroofing.com/spirit/comment/17283/find/
+1 to Todd's advice. I don't like going directly over top because when you fasten the roof, it is very easy to pull the roof down and sections and create unevenness as well as translate the dips into the new metal roof. There are nail base boards as well that will give you a level decking. Metal should be a permanent options so get the deck squared away and ready for the new roof. Eric Novotny
Eric Novotny
An informed customer is the Best Customer!

4/18/2012
Share
Or copy this URL: https://www.metalroofing.com/spirit/comment/17284/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 the MRA
    • Member Companies
    • Leadership
    • MRA News
  • For Professionals
    • Join the MRA
    • Industry Resources
    • Upcoming Events
  • Contact
  • Subscribe
©2023 Metal Roofing Alliance. All Rights Reserved. Privacy Policy Terms and Conditions