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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 ) A5 s1 O/ u$ z8 v" K* a, |what happens if there is persistent condensation? ; N6 v' e# q' T+ x* s; B; bblinds and curtains are left open all the time, t ...
# \# O2 Q: {$ D' v+ M" pgood question. it means your indoor humidity is too high. many reasons: cooking, air leakage, rh too high, or insulation problem around your windows.