Insulation Thickness For R38 Roof

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.

Insulation thickness for r38 roof.

A recent mckinsey co. Product thickness in 10 25 in 2 10 25 2 12 in 8 eco options category. Owens corning insulation products help improve thermal performance and control moisture in commercial institutional and. R 13 johns manville fiberglass insulation soundproofing insulation fiberglass insulation 2 inch fiberglass 12 fiberglass roofing.

So you need to know an insulation product s thickness as well as its r value in order to compare it to another product. 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. Drill holes in the sheathing and blow insulation into the empty wall cavity before installing the new siding and. The thickness of your r 38 insulation will depend on the material you have the brand and how it s installed.

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. 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. Eight inches of poor quality insulation may have a higher and better r value than one inch of top quality insulation. Insulation is designed to eliminate r value loss caused by compressing standard r 38 products in 2x12 cathedral ceiling construction.

Get free shipping on qualified r38 fiberglass insulation or buy online pick up in store today in the building materials department. Ceiling joists are the horizontal boards that span the width of the house resting on the outer wall plates and possibly on. Wall insulation whenever exterior siding is removed on an. As a foil faced polyisocyanurate foam insulation enerfoil tm s r value actually more than doubles.

The fiberglass comes in rolls also known as batts which vary in size.