1. Competency: 206.00 Draw wall sections and details Objective: 206.04 Analyze insulation and vapor barrier materials and construction.

2. Insulation Slows the transfer of heat Placed in walls, floors, and ceilings that face unheated areas

3. Insulation Types Flexible batt and blanket Loose-fill Rigid board Spray-on Reflective foils

4. R-values The higher the R number the greater the resistance to heat flow All materials have an R-value Requirements vary with geographic location

5. Vapor Barriers Placed on the heated side of insulation Types Papers attached to flexible Batt and blanket insulation 6mil polyethylene sheet Foil-backed gypsum board Rubberized asphalt membrane