Insulation Thickness For R38 Roof

Wall insulation whenever exterior siding is removed on an.

Insulation thickness for r38 roof.

An r 38 fiberglass batt should be approximately 12 inches thick while the thickness of cellulose insulation of a finished fitted product will larger. Eight inches of poor quality insulation may have a higher and better r value than one inch of top quality insulation. Product thickness in 10 25 in 2 10 25 2 12 in 8 eco options category. 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.

Drill holes in the sheathing and blow insulation into the empty wall cavity before installing the new siding and. How to increase the interior ceiling joist for r38 insulation. 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. 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.

Ceiling joists are the horizontal boards that span the width of the house resting on the outer wall plates and possibly on. The thickness of your r 38 insulation will depend on the material you have the brand and how it s installed. 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. Owens corning insulation products help improve thermal performance and control moisture in commercial institutional and.

So you need to know an insulation product s thickness as well as its r value in order to compare it to another product. R 13 johns manville fiberglass insulation soundproofing insulation fiberglass insulation 2 inch fiberglass 12 fiberglass roofing. As a foil faced polyisocyanurate foam insulation enerfoil tm s r value actually more than doubles. A recent mckinsey co.

Get free shipping on qualified r38 fiberglass insulation or buy online pick up in store today in the building materials department.