Insulation Thickness For R38 Roof

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 thickness for r38 roof.

Drill holes in the sheathing and blow insulation into the empty wall cavity before installing the new siding and. The importance of insulation thickness r value isn t just a time measurement though. Achieving greater r values in attics the higher the r value the better the thermal performance of the insulation. 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. Insulation is designed to eliminate r value loss caused by compressing standard r 38 products in 2x12 cathedral ceiling construction. Wall insulation whenever exterior siding is removed on an. It takes into account the size of the sample and the overall change of temperature over time so that you can compare thermal conductivity of materials tested with plates of different temperatures or even that were tested by other methods.