I have a potential remodel or I should say finish what the builder is leaving hanging for client project that would involve 1000 SF of laminate flooring in a new homes unfinished basement.
Concrete was poured last fall and has been enclosed by house for nearly that long.
Question is whether we need or would it harm installation to put a poly vapor barrier down?
The laminate flooring is factory backed with foam padding. I realize that the floor itself will act as a vapor barrier to some degree.
Other factors here are that the floor is a hot water tube radiant floor and the customer is really requesting a vapor barrier as she is an enviromental consultant and is concerned about future (none now) radon outgassing levels. She has a pipe under slab already to capture and could vent gasses if they detect radon level sufficient to warrant venting in future. She's going to monitor yearly.
I'm thinking here that everything, the floor, its foam back and potential vapor barrier are all going to outgas (as well) to some degree, maybe worse than the radon :) But I'm wondering what everyone thinks would be warranted here.... Poly barrier under and seal the seams with tape all around, even at the expansion joint perimeter -or- is this barrier even necessary and/or desired over a radiant floor ? We've done laminate floors over tube under subfloor (between the joists) applications but never where it is going directly in contact with a radiant slab. Most homes here are baseboard radiators but radiant slabs are becoming very popular in the new homes.
Thank you in advance for everyone's insights.
Dave
Concrete was poured last fall and has been enclosed by house for nearly that long.
Question is whether we need or would it harm installation to put a poly vapor barrier down?
The laminate flooring is factory backed with foam padding. I realize that the floor itself will act as a vapor barrier to some degree.
Other factors here are that the floor is a hot water tube radiant floor and the customer is really requesting a vapor barrier as she is an enviromental consultant and is concerned about future (none now) radon outgassing levels. She has a pipe under slab already to capture and could vent gasses if they detect radon level sufficient to warrant venting in future. She's going to monitor yearly.
I'm thinking here that everything, the floor, its foam back and potential vapor barrier are all going to outgas (as well) to some degree, maybe worse than the radon :) But I'm wondering what everyone thinks would be warranted here.... Poly barrier under and seal the seams with tape all around, even at the expansion joint perimeter -or- is this barrier even necessary and/or desired over a radiant floor ? We've done laminate floors over tube under subfloor (between the joists) applications but never where it is going directly in contact with a radiant slab. Most homes here are baseboard radiators but radiant slabs are becoming very popular in the new homes.
Thank you in advance for everyone's insights.
Dave
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