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Tinstaafl 05-16-2012 12:13 PM

Quote:

Originally Posted by Inner10 (Post 1498126)
I like how at 3:00 the video explains to insulate around a pipe...here we always insulate behind the pipe if it has to run on an ext wall and put the vapor barrier behind the pipe.

Still doesn't nailing on the inside compress the edges and leave an unwanted air space all around the edge?

If you insulate only behind the pipe, you will have a considerably lower R factor in that stud cavity. Interesting that you would put the VB behind--that leaves potential for condensation on a cold-water line with no way to dry to the outside.

As for the unwanted air space, technically you're correct. But I think you'd have a hard time measuring the difference in performance, or demonstrating a meaningful increase in the likelihood of mold or rot.

Inner10 05-16-2012 12:19 PM

Quote:

Originally Posted by Tinstaafl (Post 1498133)
If you insulate only behind the pipe, you will have a considerably lower R factor in that stud cavity. Interesting that you would put the VB behind--that leaves potential for condensation on a cold-water line with no way to dry to the outside.

As for the unwanted air space, technically you're correct. But I think you'd have a hard time measuring the difference in performance, or demonstrating a meaningful increase in the likelihood of mold or rot.

I don't insulate anything...I just know what I see, and in the rare occasion I see pipes in an outside wall they VB behind them.

Paulie 05-20-2012 07:38 PM

Quote:

Originally Posted by Inner10 (Post 1497366)
You can still buy paper back insulation? Wow haven't seen that stuff in eons.

We aren't allowed to use any faced batt insulation in basements anymore up here.

Always taught to staple to the sides of the studs.

Glue and screw rock.


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