New siding for an old house, and a couple other questions
I asked a couple questions a while back regarding installing rigid over existing clapboards with a WRB and an inch or so of rigid insulation – I couldn’t seem to respond to those answers but I have a couple more to ask If I use semi-permeable polyiso board over the existing wood siding so it can dry to in both directions, can a fluid applied WRB be applied to the outside of the rigid board. Alternately, If I put either housewrap or fluid applied under the rigid, should the joints be taped? Reading on Dupont’s website they recommend not taping the joints.
And a couple other unrelated questions: our house is a 1 1/2 story, balloon framed, gable front. The eaves on the side are about 24″ above the second floor level. Above the second floor is (mostly) open cell spray foam, below is blown in cellulose. Does this cause any problems with moisture in the walls since air moves through some areas more that others?
Lastly, We have original 1920 windows with storm windows which frost and condensate very badly on this inside of the storms in the winter because the old wood windows are so leaky. Can old windows be effectively weatherstripped and sealed to avoid (or at least minimize) this or do I just need to go with new windows?
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