Ducts and HVAC

Seal the boot connections to drywall/subfloor with mastic.

Ducts should not be pinched, squeezed, or supported in a way that prevents air flow.

Ducts and HVAC system

 Seal returns with mastic at all connections.

Seal HVAC components at joints and seams with mastic or UL 181 tape.

Ducts image 2

Duct pinch 2

Seal all ductwork and HVAC components at all joints, seams and corners with mastic.

Flexible duct should be properly supported. Do not compress flexible ducts more than the thickness of the insulation.