Insulation Thickness For R38 Roof

The thickness of your r 38 insulation will depend on the material you have the brand and how it s installed.

Insulation thickness for r38 roof.

R 13 johns manville fiberglass insulation soundproofing insulation fiberglass insulation 2 inch fiberglass 12 fiberglass roofing. Material type r value cost per square foot cost per square foot per r value fiberglass batt 3 5 12 inches thick 13 0 20 to 0 40 0 02 30 0 60 to 1 00 0 03. So you need to know an insulation product s thickness as well as its r value in order to compare it to another product. Owens corning insulation products help improve thermal performance and control moisture in commercial institutional and.

Improved insulation is a good step toward improving building efficiency particularly since the atlanta based american society of heating refrigerating and air conditioning engineers ashrae increased minimum roof insulation levels in 2007 in its standard 90 1 the first increase in 18 years and if that isn t enough to spur someone into action. Insulation insulation material when properly used can make your home more comfortable and energy efficient and can significantly reduce heating and cooling bills throughout the year. As a foil faced polyisocyanurate foam insulation enerfoil tm s r value actually more than doubles. Ceiling joists are the horizontal boards that span the width of the house resting on the outer wall plates and possibly on.

Foamular xps roof insulation for commercial buildings page 5 foamular xps roof insulation for commercial buildings foamular xps insulation is a rigid foam insulation which meets the needs of today s design professionals for a truly sustainable insulation product. The fiberglass comes in rolls also known as batts which vary in size. Drill holes in the sheathing and blow insulation into the empty wall cavity before installing the new siding and. An r 38 fiberglass batt should be approximately 12 inches thick while the thickness of cellulose insulation of a finished fitted product will larger.

A recent mckinsey co. Wall insulation whenever exterior siding is removed on an. Insulation is designed to eliminate r value loss caused by compressing standard r 38 products in 2x12 cathedral ceiling construction. Product thickness in 10 25 in 2 10 25 2 12 in 8 eco options category.

How to increase the interior ceiling joist for r38 insulation.