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The window covering does not increase any insulating R-value, but prevent indoor air movement. Condensation is the major problem.
DevenC 发表于 2013-12-26 12:49 $ C; _9 m) Z2 f2 i( W7 x* cwhat happens if there is persistent condensation?7 J, T3 T" D; X7 x
blinds and curtains are left open all the time, t ...
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good question. it means your indoor humidity is too high. many reasons: cooking, air leakage, rh too high, or insulation problem around your windows.