Proper Insulating Roof Ceiling

Sprayed against the underside of the roof deck it seals against air movement eliminating the need for a vapor barrier or ventilation.

Proper insulating roof ceiling. For example cathedral ceilings built with 2x12 rafters have space for standard 10 inch batts r 30 and ventilation. An advantage of spray foam is it s quick whereas foam board needs to be cut and measured which can be a chore. Illustration by ian worpole. The right way to insulate attics and cathedral ceilings with batts using certain t.

Purchase rolls or packages of insulation that will fit in the spaces between the ceiling joists. Cathedral ceilings must provide space between the roof deck and home s ceiling for adequate insulation and ventilation. When tom insulates a cathedral ceiling or a finished attic he also turns to foam. To insulate the roof itself you either use spray foam or retrofit with it with rigid foam board.

The standard width for joists is 24 inches. Shower thoroughly after you re done for the day to remove fibers from your skin and launder your work clothes after one wearing. This can be achieved through the use of truss joists scissor truss framing or sufficiently large rafters. Set up a stepladder tall enough to work comfortably from.