Controlling moisture in hot climates

Insulation · The Basics · printed page 236 (PDF page 237)

Book index entries

Controlling House Moisture in Hot Climates Hot Climates – Controlling Moisture Moisture – Controlling in Hot Climates Insulation – the Basics

Text in the illustration

A/C
air/vapor barrier should be installed on the outside of the wall or not at all
vinyl wallpaper acts as a vapor barrier and is not recommended as it can cause condensation to be trapped in the wall
don't ventilate crawlspace
crawlspace
dirt floor
gravel
polyethylene sealed at edges

Generated explanation

The illustration shows a house section with an attic-mounted air-conditioning unit and ductwork, exterior walls, and a crawlspace over a dirt floor. For hot climates, it recommends placing an air/vapor barrier on the outside of the wall or omitting it. Interior vinyl wallpaper is discouraged because it acts as a vapor barrier and can trap condensation in the wall. A crossed-out crawlspace opening indicates that the crawlspace should not be ventilated. A magnified edge detail and check mark emphasize a polyethylene ground covering sealed at its edges, with gravel also identified.

Related illustrations

1319

Moisture control in hot climates

· p. 235

A schematic house section shows an air-conditioning unit and ductwork, with outdoor conditions of 85°F and 80% humidity and indoor conditions of 75°F and 50% humidity. An enlarged problem detail shows warm outdoor air fl