Space between insulation and sheathing?


Old 06-03-04, 02:49 PM
Visiting Guest
Posts: n/a
Space between insulation and sheathing?

We are insulating an 1870's outbuilding to use as a year-round office space. The building is 15' x 20', one room, gable roof with collar ties. The walls have new studs 16" on center, and we will insulate with standard fiberglass and vapor barrier. The roof is framed with 2"x5" rafters, and we intend to insulate and sheetrock the inside of the roof, leaving the collar ties exposed.

We plan on installing strapping perpendicular to the rafters, and fastening the insulation, vapor barrier and sheetrock to the strapping. This should give us roughly two to three inches of space between the insulation and the roof sheathing.

Is this enough space for ventilation? (Ventilation will be a ridge vent and soffit vents.)

Thanks in advance for any advice!

Sponsored Links
Old 06-05-04, 04:24 PM
Ed Imeduc's Avatar
Join Date: Aug 2002
Location: Mountain Williams Missouri
Posts: 18,389

Id say yes. You could put up the rafter foam vents as they are called. To make sure the insulation dont touch the roof boards there if you want.


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Thread Tools
Search this Thread
Display Modes