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: Energy Efficiency

Energy efficiency

Return to Energy Efficiency

Return to Forum

Last year we purchased a midcentury modern home, age 50-60 yrs. The majority of the home has tongue and groove cathedral ceiling. Because of some leaking skylights we decided to "bite the bullet" and replace the leaking windows and aging asphalt shingle roof. Since that time we have learned many things about roofing. In an effort to be more energy efficient, we considered several different concepts. Our problem is that we want to get the best solution but don't know how to get there other than speaking with several roofing contractors in our area. They are among the best in our market but don't seem to have the expertise to discuss our dilemma. Our roof is 2-12. It has no venting. We believe there is one inch iso on the roof now. We have been advised to install a crossvent rb venting system and additional iso and 30 yr asphalt shingles by one contractor and a metal roof with: 4. Install high temperature ice and water shield to the existing wood deck. 5. Fabricate and install 1-1/2” standing seam metal roof system with all associated perimeter and penetration flashing using 24 gauge galvanized steel pre-painted with a Kynar 500 finish. Panels shall be continuous in length. All seams shall be double locked. (Color choice to be selected by homeowner.). If we install the metal roof, we understand the benefits of how the painted finish will help with cooling costs. We are not sure of the energy benefits in the winter. We have been told the metal roof is so efficient that additional thickness of iso board 4x8x3 would only give us an R16. The benefit does not seem to justify the cost. We have also been told the metal roof is so efficient that a crossvent system would not justify the added cost. Please give us your input. Thank you
Guest User

1/2/2013
Share
Or copy this URL: https://www.metalroofing.com/spirit/comment/17991/find/
Thanks for your question. First of all I am unaware of any asphalt shingles intended for 2:12 pitch. Were they going to increase the pitch? Adding ventilation, with or without a metal roof, will help avoid condensation issues in your roof assembly and it will also increase summer efficiency. The only way to help with winter efficiency in your case is with extra R Value. If you wish, feel free to call me and we can discuss further. Todd Miller 1-800-543-8938 ext 201 Todd Miller
Todd Miller
Isaiah Industries, Inc.

1/2/2013
Share
Or copy this URL: https://www.metalroofing.com/spirit/comment/17992/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