jaue2015009: Study on the Effects of the Thickness of Floor Insulation Materials on Underfloor Humidity in Houses That Incorporate Floor Insulation Technology

Abstract

The author measured the temperature and humidity levels of the underfloor space of two houses which used floor insulation technology and discussed the effect of the difference in insulation capabilities of floor insulation materials through simulations. Houses which use floor insulation materials that have high insulation capabilities have lower air temperature in the underfloor space in comparison to other houses and have higher relative humidity. When the insulation capabilities of the floor insulation materials are higher, the relation between the air temperature in the first floor living room and underfloor becomes weaker, making it more difficult to be affected by the air temperature in the first floor living room. Likewise, the relation between the air temperature in the first floor living room and surface temperature of the floor insulation materials become weaker, meaning that in cases where the materials have high insulation capabilities, the surface temperature of the materials become lower. As a result, not only the surface of the slabs, but the surface of the floor insulation materials have an increased risk of condensation.