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: Product Selection

SIPs and metal roofing

Return to Product Selection

Return to Forum

I have just built (the shell) of a house with steel SIPs (8" roof panels), and would like to add a metal roof and solar panels. My preference is for old style corrugated roofing (or 'wave'), and would like to know if there is any issue with this style in combination with the SIPs, and what needs to be laid between the roofing and SIPs panels (e.g. radiant barrier or other). Thank you, Ian Rossbridge

sipshouseonthefarm

8/11/2019
Share
Or copy this URL: https://www.metalroofing.com/spirit/comment/24379/find/

Thank you. You say that your SIP's are steel? So these are steel insulated roof panels? Why do you want to apply anything on top of them at all?

Todd Miller
Todd Miller
Isaiah Industries, Inc.

8/12/2019
Share
Or copy this URL: https://www.metalroofing.com/spirit/comment/24380/find/

1) It's lightweight steel, and roofing is still recommended.
2) if i didn't cover with roofing, i would still need to seal all the seams in some way (currently peel and stick, which is only temporary)
3) i intend to collect water from the roof for drinking (it's far better to be channeled into the gutters, hence the question about using corrugated style)

sipshouseonthefarm

8/13/2019
Share
Or copy this URL: https://www.metalroofing.com/spirit/comment/24387/find/

Interesting. I would use an underlayment between the two types of panels. If you wanted to use a radiant barrier, you can but they are really only effective when facing an airspace.

Todd Miller
Todd Miller
Isaiah Industries, Inc.

8/13/2019
Share
Or copy this URL: https://www.metalroofing.com/spirit/comment/24389/find/

OK, thanks. ian

sipshouseonthefarm

8/13/2019
Share
Or copy this URL: https://www.metalroofing.com/spirit/comment/24390/find/

You've got two main options: add purlins and use a standing seam metal product rated for purlins, or add a layer of solid plywood decking for the metal panels to attach to (in which case residential panels that depend on a solid deck are fine).

The ThermaSteel SIP's metal layer seems far too thin for screwing directly to, so you'll have to take get down another layer.

Consider venting, and fire/ember intrusion issues.

Bryce Nesbitt
The cheapest job, long term, is the one done right the first time.

10/24/2019
Share
Or copy this URL: https://www.metalroofing.com/spirit/comment/24583/find/

Maybe Cor-A-Vent Purlin Vent can help you:

https://www.cor-a-vent.com/purlin-vent.cfm

Bryce Nesbitt
The cheapest job, long term, is the one done right the first time.

10/24/2019
Share
Or copy this URL: https://www.metalroofing.com/spirit/comment/24584/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