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 Process

Improper Installation of Metal Roof

Return to Installation Process

Return to Archive

Return to Forum

This topic has been closed by the administrator. Comments are no longer accepted.
A contractor just finished installing a ribbed panel metal roof over purlins on my 30' x 70' gambrel roof shop. I was concerned with his method of driving the screws. He chose to ignore my suggestion to drill the holes. (he started them through the metal with a hammer, which, in my opinion created an unecessarily large hole and a dimple nearly as large as the neoprene washer) As I expected, during it's first exposure to rain today, I observed about a dozen drips. I am looking for a published reference that suggests that this is not an accepted method of installing the screws. I believe that this should be a common sense matter, but I need something to back me up if this situation ends up in litigation. I have a significant investment in material and labor and am at a loss as to how it could be remedied other than having new material properly installed. Any suggestions would be greatly appreciated.
Guest User

9/8/2004
Share
Or copy this URL: https://www.metalroofing.com/spirit/comment/3954/find/
You should first contact the manufacturer and get their recommendations. Some vertical rib panels are fastened in the ribs and some in the flat and some both and generally depend on factors of sheet length, pitch, steel thickness, profile and screw type. I can say that most screws are designed to be self drilling so that creating a sart in the metal is not generally necessary. Generally pre drilling is done to keep the fasteners in line especially if it was fastened in the ribs. Check that the screws were not over driven which will misform the rubber seal and cause leaks which would be made worse by dimpling.
Allan Reid
Dura-Loc Roofing Systems, Inc.

9/8/2004
Share
Or copy this URL: https://www.metalroofing.com/spirit/comment/3955/find/
  • 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