Moisture management / Discussions

...management of the "dew point" to prevent hidden mold (see here to better understand the dew point in homes.) Since you plan to keep the existing vapor barrier against the concrete, the biggest risk is moisture getting trapped between that plastic and your new drywall. Adding mineral wool rigid insulation boards is a sm...

I'm adding insulation to the stud walls in my baserment with 2.25" of close cell spray foam on the concrete walls.  The stud walls are 3-5" " from the close cell spray foam.  I can either (try to) pack the void between the wall and the uneven surface of the closed cell spray foam, leaving the stud bays empty, or leave ...

Building a 24 X 50 Post and Beam Barn.  Planning to insulate on the exterior with no interior insulation as I wish to keep the bones of the barn exposed internally.  Wall currently has 3/4" Shiplap pine sheathing over the Girts.  Looking at emplacing 4" R20 Rigid XPS Panels seam taped. Those would be strapped to the wa...

...moisture flow between the attic and living space. Thinking permeable is better but I'm hearing differently. Where and when to use vapor barriers in construction and renovation can vary depending on a few things – the climate you are building in, whether it is above grade or below, and the composition of the wall. The a...