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: Roofing over existing roof

metal roof over ridge/soffit vent shingle roof

Return to Roofing over existing roof

Return to Archive

Return to Forum

This topic has been closed by the administrator. Comments are no longer accepted.
My home has an extremely flat roof (2:12) that has one layer of shingles that are always blowing off. It has cathedral ceilings with 2x6 rafters and fiber glass insulation. The roof is vented with a full length ridge vent and vent holes in the soffit. I would like to put a new metal roof on. I was thinking that I would put 2x4's down on top of the current shingles, with 2 feet between and 1 1/2 inch foam baord insulation and put the metal roofing panels on. Is this a practical thing to do? Are there any problems that may arise?
geremy iverson

5/12/2009
Share
Or copy this URL: https://www.metalroofing.com/spirit/comment/13259/find/
Make sure that the metal panel you choose is suitable for this type of installation. Also, I would suggest adding a vented airgap above the current roof deck as well. Todd Miller
Todd Miller
Isaiah Industries, Inc.

5/13/2009
Share
Or copy this URL: https://www.metalroofing.com/spirit/comment/13260/find/
Do you have any suggestion on how to put an vented air gap in?
Guest User

5/13/2009
Share
Or copy this URL: https://www.metalroofing.com/spirit/comment/13261/find/
If your insulation does not fill the entire gap, you can then vent the open area between the insulation and the roof decking or metal roofing using soffit vents as intake and ridge vent as exhaust. Todd Miller
Todd Miller
Isaiah Industries, Inc.

5/21/2009
Share
Or copy this URL: https://www.metalroofing.com/spirit/comment/13262/find/
  • 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