Client was astounded that their builder never insulated within the framing for a potential window in their 10 year old modular home. See customer hand prints on sheet rock where they could actually "feel the cold".
Combustion Appliance Zone Testing (CAZ) Made Easy (March 24, 2016)
-Adapting to the new BPI standard
-RESNET testing requirements
-NFPA testing requirements
-Best practices for best results