Techniques/materials to improve the air-tightness of a 1920s-era bungalow in a hot & humid climate (Zone 2A)?
I am looking for strategies to improve air tightness during a major gut/deep energy retrofit of a 1920s-era bungalow in a hot & humid climate (Zone 2A). The existing house has an un-insulated 2x4 frame, interior & exterior shiplap and exterior brick, all of which we want to save as part of historic features/character to the house. We’re planning to insulate the wall cavities with blown-in cellulose insulation and perform a blower door test to identify gaps, however we expect the walls will be quite leaky. We'd rather not have to remove the brick & shiplap since that's likely to significantly increase costs.
Ideas & articles references to reading material greatly appreciated,
Posted Sun, 05/11/2014 - 13:04
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Since drywall has a permeance of 0.02 liter/sec - m at 75 PA is ever possible to have sheathing dry to the interior of the home?