DIY Home Improvement, Remodeling & Repair Forum > DIY Home Improvement > Roofing and Siding > new home Insulation in basement getting wet.

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Old 04-04-2013, 05:31 PM  
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I too, think it is your sump pump discharge line leaking at a fitting. Pull the insulation, dry framing with hair dryer, add water to run sump, watch and feel for leaks. It could also be an exterior fitting wetting/spraying the siding/sheathing/housewrap under the vinyl siding, running back inside through joint of joist/mudsill (especially is H.W. is not lapped over mudsill). If in a heating climate, you may want to change your fiberglass for rigid foamboard after air-sealing the wood rim joists.

On a lesser note; the fiberglass is stopping the uncovered sump well water and condensing there due to the furnace leak at the elbow ducting blowing air/moisture vapor constantly in that bay.

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