Abstract
The aim of this investigation was to study the vapour permeability of the out- side insulation wall in cold district. First, we examined the vapour permeability of insulations, exterior materials and paints at low temperature. Second, we examine the vapour permeability of the outside insulation wall by drying the concrete wall under experimental conditions. From the result of this investigation, we understood the vapour permeability of the outside insulation wall. The drying of concrete is mainly dependent on the insulation resistance of vapour permeability and outside temperature. The amount of humidity in the exterior materials was mainly dependent on the resistance of vapour permeability of exterior materials and paints. It was considered that the damage of paints related to the condition of painting at the site.
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