This topic has been closed by the administrator. Comments are no longer accepted.
I'll soon be building, in Texas, a 2000 sq ft. home with an unvented attic and am thinking about using a metal roof. I've read elsewhere on this forum venting of attics is required for metal roofs. As unvented attics are now code approved through the ICC is the MRA planning on adopting new guidelines?
Or copy this URL:
https://www.metalroofing.com/spirit/comment/6849/find/
Jon,
This really is not a metal roofing issue per se. Please also understand that MRA really doesn't have "guidelines" this board is just staffed by a couple of us old guys who try to help people out based upon our experience and knowledge.
Unvented attics, done properly, can be successful. I knew that the ICC was working on a revised section for them but I was not awrae that it had been adopted.
My concern has always been that, particularly for an existing home, it is usually easier and more failsafe to vent properly than it is to non-vent properly. (I hope that statement makes sense.) Therefore, my suggestion has always been for good venting.
However, I have no propblem wth non-vented attics provided they have a proper vapor barrier and proper insulation.
Or copy this URL:
https://www.metalroofing.com/spirit/comment/6850/find/
I previously posted a question under condensation of a non vented cathedral roof in which Allan Reid restated building code requiring 1" of vertical free air space between insulation and decking. Energy savings would double. Here is my issue. Should I bite the bullet and put in that air barrier, soffit and ridge vents or just put down a breathing type underlayment, vertical strapping to provide the air space and then put an energy star metal roof on horizontal strapping with a vented eave and ridge strip.
Or copy this URL:
https://www.metalroofing.com/spirit/comment/6851/find/
I am not entirely certain I understand your question so do feel free to call me anytime -- 1-800-543-8938 ext 201 -- however, I think the second proposal you have put forward would work very well.
10/7/2005
Or copy this URL: https://www.metalroofing.com/spirit/comment/6849/find/Isaiah Industries, Inc.
10/7/2005
Or copy this URL: https://www.metalroofing.com/spirit/comment/6850/find/2/14/2006
Or copy this URL: https://www.metalroofing.com/spirit/comment/6851/find/Isaiah Industries, Inc.
2/14/2006
Or copy this URL: https://www.metalroofing.com/spirit/comment/6852/find/