CAN SPRAY POLYURETHANE INSULATION BE APPLIED DIRECTLY TO ELECTRICAL WIRING? WHAT ABOUT INSTALLED ELECTRICAL DEVICES LIKE RECESSED LIGHTS?
Spray polyurethane can be applied directly to electrical wiring. Recessed lights or other fixtures may require a certain amount of air circulation around them for cooling purposes. In these cases, a box can be build around the fixture with gypsum wall board; then spray foam can be sprayed directly to the outside of the box.