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: I Have An Existing Metal Roof and Have A Question

replacement

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

Return to Forum

I have a douple rolled zinc roof and may need to replace some damadged panels. What is the best proccedure for this?error: error 20950.jpeg

John Roberts

1
4/23/2018
Share
Or copy this URL: https://www.metalroofing.com/spirit/comment/23055/find/

Post up a picture to start with.

Do you know who the panel manufacturer was?

Eric Novotny
Eric Novotny
An informed customer is the Best Customer!

4/23/2018
Share
Or copy this URL: https://www.metalroofing.com/spirit/comment/23057/find/

Elzinc is the manufacturer

John Roberts

4/23/2018
Share
Or copy this URL: https://www.metalroofing.com/spirit/comment/23058/find/

I think these panels will have to be removed from the last one installed on back to the damaged areas ... and will likely be destroyed in the process and have to be replaced with new panels.

Todd Miller
Todd Miller
Isaiah Industries, Inc.

4/23/2018
Share
Or copy this URL: https://www.metalroofing.com/spirit/comment/23059/find/

Do you believe all the panels that are removed will have to be replaced, or just the ones in the picture that are currently damadged?

John Roberts

4/23/2018
Share
Or copy this URL: https://www.metalroofing.com/spirit/comment/23060/find/

These are mechanically seamed double lock panels. There are others out there far more familiar with these panels than I am. However, I believe that there will not be a way to unlock / unfold the seams and then be able to re-seam them. Again, there are others who know more than I do in this area. You may want to contact the manufacturer and see what they say.

Todd Miller
Todd Miller
Isaiah Industries, Inc.

4/23/2018
Share
Or copy this URL: https://www.metalroofing.com/spirit/comment/23061/find/

Thank you gentlemen for your adivise

John Roberts

4/24/2018
Share
Or copy this URL: https://www.metalroofing.com/spirit/comment/23064/find/

can panels be overlayed on top of the damadge panels? what if any negetive affects could this have? And if possible from pictures what do you think the cause of these ripples might be?

John Roberts

4/24/2018
Share
Or copy this URL: https://www.metalroofing.com/spirit/comment/23065/find/

Unfortunately, there really would not be a way to overlay these with new panels, because of the mechanical seam. Additionally, double layering zinc tightly like that would be an invitation to corrosion I am afraid. When you said the panels were damaged, I assumed something had happened to them. If they have been that way since they were installed, someone really messed up during installation.

Todd Miller
Todd Miller
Isaiah Industries, Inc.

4/24/2018
Share
Or copy this URL: https://www.metalroofing.com/spirit/comment/23066/find/

I have come to understand that this is called oil canning. it comes and goes, sometimes it looks better but never worse that the pictures

John Roberts

4/25/2018
Share
Or copy this URL: https://www.metalroofing.com/spirit/comment/23078/find/

Oil canning can be due to several things:

1) Inherent unavoidable stresses caused by the shape of the metal.
2) Installing over an uneven surface.
3) Improper fabrication of the panels.
4) Physical damage to the panels.
5) System design does not properly allow for thermal expansion and contraction of the product.

Todd Miller
Todd Miller
Isaiah Industries, Inc.

4/25/2018
Share
Or copy this URL: https://www.metalroofing.com/spirit/comment/23079/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
©2018 Metal Roofing Alliance. All Rights Reserved. Privacy Policy Terms and Conditions