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Old 08-28-2011, 08:54 AM   #1
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Insulating my basement


Hey guys, I want to finish my basement to add additional living space and have some questions. Ive been researching this a bit, so my questions still roll on. The basement does not leak at all, and have a dehumidifer down there to keep the RH down( Live in New England). I ripped the old wood walls down( dont ask, previous owner, it looked like a barn stable), and the very thin fiberglass insulation. I want to install polystyrene insulation directly to the walls. There is currently a plastic sheet layer, assuming for a vapor barrier which is a tad moist behind it. * I should just remove the plastic barrier and let the walls dry then adhease the board insulation to the walls, and not keep plastic there ,correct?* and should I use 1 inch thick or bigger?* I have large a Stone Hearth for my wood stove that goes up the whole wall and covers the chimney, so no hot areas should be exposed. *Im assuming there is codes for insulating near a stove but dont know what they are.*And i want to put laminate flooring down when its all said and done, Ive seen sites where it says i can insulate the floor with board as well, any suggestions? Thanks guys, looking forward to adding more space to my home!!

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Old 08-28-2011, 04:05 PM   #2
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Insulating my basement


“I should just remove the plastic barrier and let the walls dry then adhease the board insulation to the walls, and not keep plastic there ,correct?” --- correct.

“and should I use 1 inch thick or bigger?” ----- bigger, 2” closed-cell for more savings- Table 5; http://www.buildingfoundation.umn.ed...timum-main.htm And page #9: http://www.eere.energy.gov/buildings...s/db/35017.pdf

“Im assuming there is codes for insulating near a stove but dont know what they are.” – check with your local Building Department when you get the permit to finish the basement.

“And i want to put laminate flooring down when its all said and done, Ive seen sites where it says i can insulate the floor with board as well, any suggestions? “----- yes, use foam board; http://www.buildingscience.com/docum...lation-systems

End of article for alternative; http://www.buildingscience.com/docum...ms?full_view=1
Foam board and canned foam the rim joists, ADA the drywall, sill sealer under the p.t. bottom plate for capillary/thermal/air break, hold drywall 1/2" up above slab, s.s. nails in p.t. wood, etc.....


Gary

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