Proper Insulating Roof Ceiling

The standard width for joists is 24 inches.

Proper insulating roof ceiling.

The right way to insulate attics and cathedral ceilings with batts using certain t. Always cover the tops of the ceiling joists to make sure the insulation is deep enough to reach your target r value and to prevent thermal bridging the heat loss that occurs through the wood framing. An advantage of spray foam is it s quick whereas foam board needs to be cut and measured which can be a chore. Set up a stepladder tall enough to work comfortably from.

Shower thoroughly after you re done for the day to remove fibers from your skin and launder your work clothes after one wearing. To insulate the roof itself you either use spray foam or retrofit with it with rigid foam board. Purchase rolls or packages of insulation that will fit in the spaces between the ceiling joists. If you re insulating the roof directly.

This can be achieved through the use of truss joists scissor truss framing or sufficiently large rafters. Sprayed against the underside of the roof deck it seals against air movement eliminating the need for a vapor barrier or ventilation. For example cathedral ceilings built with 2x12 rafters have space for standard 10 inch batts r 30 and ventilation. Cathedral ceilings must provide space between the roof deck and home s ceiling for adequate insulation and ventilation.