Insulation Thickness For R38 Roof

Knauf insulation r 38 ecobatt kraft faced high density fiberglass insulation batt 10 1 4 in.

Insulation thickness for r38 roof.

The fiberglass comes in rolls also known as batts which vary in size. The thickness of your r 38 insulation will depend on the material you have the brand and how it s installed. An r 38 fiberglass batt should be approximately 12 inches thick while the thickness of cellulose insulation of a finished fitted product will larger. 10 thick r 38c ecotouch thermal batt insulation prevents moisture damage and help assure long roof life by providing 1 of ventilation air space between the insulation and roof deck.

Insulation is designed to eliminate r value loss caused by compressing standard r 38 products in 2x12 cathedral ceiling construction. The importance of insulation thickness r value isn t just a time measurement though. Wall insulation whenever exterior siding is removed on an. Achieving greater r values in attics the higher the r value the better the thermal performance of the insulation.