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john70t john70t is online now
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Join Date: Aug 2001
Location: midwest
Posts: 40,247
Quote:
Originally Posted by Baz View Post
I am planning on doing my roof the same way this fall/winter.
Random thought:

Long cold night.
Moisture leaks in and builds up in the insulation and wood rafters.
A stockpile of moisture.
Then comes a blazing hot afternoon.
The moisture is at boiling point and wants to push out upwards anywhere it can.

Here is the problem.

What allows that trapped moisture to escape between the layers of roof?
Those wood spacer strips run sideways.
Cheap pine also rots.
The massive heat and moisture wants to travel up vertically.
But there is no path available to the outside.

Last edited by john70t; 03-23-2017 at 11:11 PM..
Old 03-23-2017, 11:04 PM
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