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: Maintenance

pressure treated firring strips?

Return to Maintenance

Return to Archive

Return to Forum

This topic has been closed by the administrator. Comments are no longer accepted.
was told that after a few years that screws would back out of pressure treated wood and cause problems with a metal roof. is this true?
Guest User

12/1/2004
Share
Or copy this URL: https://www.metalroofing.com/spirit/comment/4725/find/
I really do not know for certain as I do not manufacture that type of roofing. Al can probably answer this question based upon his experience as a contractor a few years back. However, certain treated lumber will have chemicals which can react badly against the back of metal roofing so I probably would not use treated lumber. However, even beyond that, most residential metal roof systems are recommended by their manufacturers to be installed over decking, not furring strips. The main exception would be the batten-mounted horizontal shake and tile profile products. Never embark on the installation of any product without full instructions from the manufacturer.
Guest User

12/2/2004
Share
Or copy this URL: https://www.metalroofing.com/spirit/comment/4726/find/
You need to be careful here for several reasons. Treated lumber is typically not kiln dried after treating and therefore will undergo a good bit of shrinkage as it drys --- this is what will lead to the screws appearing to become loose. It is really the wood that shrinks away from the connection. Most newer treated lumber contains coppers as part of the treatment chemicals. This can be very corrosive to steel fasteners if not designed to work with treated lumber.. this will certainly affect fasteners for any roofing material that is used. You will need either a stainless fastener, or one specifically coated to resist this chemical treatment.
Guest User

12/6/2004
Share
Or copy this URL: https://www.metalroofing.com/spirit/comment/4727/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