Insulating Basement

Old 11-20-12, 06:24 AM
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Insulating Basement

My home is 3 years old with unfinished basement. I am going to finish the basement installing XPS foam insulation on the concrete walls followed by framing, insulation and drywall. I know there is a lot of debate about foam insulation and vapor barriers etc. I have already decided upon this plan. However I have one question. If the basement shows no sign of water (no leaks and I did the plastic on wall for moisture test) should I use a sealing paint on the walls prior or not?
Old 11-20-12, 07:00 AM
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Sealing paint on the walls is a waste anytime, IMO. Water infiltration, if it exists, is best stopped from the outside, not by a paint after it's already 95% of the way through.
Old 11-20-12, 07:21 AM
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. the paint does nothing to stop condensation.....which should be your priority.

If possible buy foam boards that have ship-lap edges.....and use something like a PL-300 adhesive.

Run a bead and completely seal all the seams and even tape the joints with Tuck Tape.


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