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

choosing insulation

Return to Product Selection

Return to Forum

We are building a straw bale house that will be heated with both electric heat pump and wood stove. My experience is that there is less problem with condensation using those heat sources as opposed to gas. My trusses have an energy heel to allow for blown in insulation, which I understand is the most cost effective insulation. My roofing contractor is wanting to use a more expensive rolled insulation that goes between the metal and purlins and provides a moisture barrier. I don't want to use an unnecessarily pricey product but don't want to skip the vapor barrier if that will cause problems later. I also want to use environmentally friendly products. Am I making a mistake with blown in insulation and no vapor barrier?
june melton

10/13/2013
Share
Or copy this URL: https://www.metalroofing.com/spirit/comment/18901/find/
You will want some sort of vapor control layer across the roof. Just using blown in will likely leave you with some condensation issues. Eric Novotny
Eric Novotny
An informed customer is the Best Customer!

10/13/2013
Share
Or copy this URL: https://www.metalroofing.com/spirit/comment/18902/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