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: Insulation Concerns

insulation or air space?

Return to Insulation Concerns

Return to Archive

Return to Forum

This topic has been closed by the administrator. Comments are no longer accepted.
I am building a garage/shop using a pole barn style truss that incorporates edge mounted 2x6's on 24" centers and 3' ag style metal panels. The purlins run parallel with the ridge.It will not be conditioned but I want to insulate the roof to reduce the condensation and drips. One idea is to set 1" rigid foam board on top of the purlins and put the metal roofing on top of that, leave the eave edges open and use some type of ridge ventalation to ventilate the small rib spaces. The other way is to attach the metal to the top of the purlins and the insulation to the bottom of the purlins and vent the area in between(approx.5.5") with a soffit type of vent on the gable ends.What is your opinion? Thank you for your time. Greg
Guest User

10/16/2003
Share
Or copy this URL: https://www.metalroofing.com/spirit/comment/2340/find/
I suggest dropping the insulation down even lower -- beneath the vertical trusses. Then, use eave soffit vents and a ridge vent to create a nicer ventilated area beneath the roof panels. Todd Miller
Todd Miller
Isaiah Industries, Inc.

10/19/2003
Share
Or copy this URL: https://www.metalroofing.com/spirit/comment/2341/find/
What is the drawback to putting galvanzide metal roof directly on foam insulation? I am building an in-law suite and I would like to have vaulted ceilings with exposed rafters. I thought about nailing 1x10" on top of the trusses then putting down felt followed by 2" foam insulation and galvanized corrugated roofing. Will the condesation form in the ridges?
Guest User

12/31/2003
Share
Or copy this URL: https://www.metalroofing.com/spirit/comment/2342/find/
Unless you have a complete vapor barrier below the insulation, warm moist air will filter up around the insulation sheets and condense on the back of the roofing sheets.
Guest User

12/31/2003
Share
Or copy this URL: https://www.metalroofing.com/spirit/comment/2343/find/
I am looking for an all in one solution for the roofing/insulation requirement of a small owner built cabin. Are there reliable insulated steel roofing panel systems equivalent to sips?
Guest User

1/15/2004
Share
Or copy this URL: https://www.metalroofing.com/spirit/comment/2344/find/
There are insulated metal roof and wall panels available, currently used primarily for commercial applications. To find sources, go to www.metalconstruction.org and search for insulated panel manufacturers from their member list. Todd Miller
Todd Miller
Isaiah Industries, Inc.

1/16/2004
Share
Or copy this URL: https://www.metalroofing.com/spirit/comment/2345/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