I appreciate the reply, Gordon. My concrete floor does have a layer of plastic sheeting under it, if I remember right. What type- I don't know. I have seen moisture still come up through some small cracks and the concrete will look damp around that crack. But, overall I don't think I have a big problem. I'm still getting the inside walls sheathed with plywood when time allows. The building is a metal building that began as a horse barn. I added a ceiling, interior framing and insulation. I've just used the localized approach of multiple dehumidifier bars and blankets draped for drying out soundboards and this seems to do okay. I think next spring an additional or new dehumidifier unit will be in order. I'm outa here for the day. Bob H. --- gordon stelter <lclgcnp@yahoo.com> wrote: > Bob --- > You'd better consult with a licensed > contractor > about this ( or get a good book on insulation/vapor > barriers ) as the solution will vary with type of > construction. You don't want to trap a lot of > moisture in the walls, for example, which could > cause > mildew, warping or other damage. > My "humidity control booth" is a 10'x12' > portable > building ( aluminum type ) with the seams sealed up > with foil duct tape, and sheet stainless steel over > the original plywood floor. My dehumidifier can dry > it > out in there very quickly for soundboard work, etc.. > A > drain hose runs to the outside. > Concrete floors can pass a lot of humidity from > the soil if they do not have at least a 6 mil > plastic > vapor barrier beneath. You might try plastic > sheeting, > but I recommend avoiding the PVC type anywhere that > you are breathing the air. Vinyl phlalates leaching > from it are bad for you ( and future progeny ). > Polyethylene would ( probably ) be better. Heavy > aluminum foil ( from restaurant supply store ) taped > to the walls with foil ducttape might be best. > Reflects light rather nicely, too! > > Thump > > > > > > __________________________________ > Do you Yahoo!? > Check out the new Yahoo! Front Page. > www.yahoo.com > > > _______________________________________________ > pianotech list info: > https://www.moypiano.com/resources/#archives > __________________________________ Do you Yahoo!? Check out the new Yahoo! Front Page. www.yahoo.com
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