GBA Logo horizontal Facebook LinkedIn Email Pinterest Twitter Instagram YouTube Icon Navigation Search Icon Main Search Icon Video Play Icon Plus Icon Minus Icon Picture icon Hamburger Icon Close Icon Sorted

Community and Q&A

Insulating a timber frame roof

Ben C.| Posted inGreen Building Techniqueson

I’m going to be building a timber frame porch with exposed rafters and roof deck.

I would appreciate feedback on insulating the roof.

I plan to have a roof cross-section that looks something like this:

1×12 pine decking
Solitex Mento Plus WRB
Six inches of salvaged rigid foam insulation in 3 or 4 layers with the seams staggered and taped
1/2″ Advantech or plywood
Ice and Water Shield for the first two feet, then 30 lb. felt
Standing seam metal roof

Do you see any problems with this installation?

Thanks,

BC

GBA Prime

Join the leading community of building science experts

Become a GBA Prime member and get instant access to the latest developments in green building, research, and reports from the field.

Related Questions

Replies

  1. GBA Editor
    Martin Holladay||#1

    Ben,
    Sounds OK to me.

  2. Ben C.||#2

    Thanks, Martin. Do you think I need the metal roof to be gapped above the felt?

Log in or create an account to post an answer.

Community

Recent Questions and Replies

  • |

  • |

  • |

  • |
View More Ask a Question

Featured Blogs

Musings of an Energy NerdView More

考虑住宅能源use

Product GuideView More

Double Check

Do you really want to delete the list,?

Note

This won't delete the articles you've saved, just the list.

This feature has been temporarily disabled during the beta site preview.

You must be a magazine subscriber to access this feature.

Subscribe today andsave up to 44%

Subscribe

Orlearn more

Already a subscriber?