R38 Roof Insulation Thickness

Insulation is designed to eliminate r value loss caused by compressing standard r 38 products in 2x12 cathedral ceiling construction.

R38 roof insulation thickness.

Product thickness in 10 25 in 2 10 25 2 12 in 8 eco options category. Drill holes in the sheathing and blow insulation into the empty wall cavity before installing the new siding and. Get free shipping on qualified r38 fiberglass insulation or buy online pick up in store today in the building materials. Owens corning r 38 ecotouch pink cathedral ceiling kraft faced fiberglass insulation batt 23 3 4 in.

As a foil faced polyisocyanurate foam insulation enerfoil tm s r value actually more than doubles. 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. 8 bags model k91 view the. The thickness of your r 38 insulation will depend on the material you have the brand and how it s installed.

How to increase the interior ceiling joist for r38 insulation. Eight inches of poor quality insulation may have a higher and better r value than one inch of top quality insulation. 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. Ceiling joists are the horizontal boards that span the width of the house resting on the outer wall plates and possibly on.

So you need to know an insulation product s thickness as well as its r value in order to compare it to another product. 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. Achieving greater r values in attics the higher the r value the better the thermal performance of the insulation. Owens corning insulation products help improve thermal performance and control moisture in commercial institutional and.

A recent mckinsey co. The fiberglass comes in rolls also known as batts which vary in size. An r 38 fiberglass batt should be approximately 12 inches thick while the thickness of cellulose insulation of a finished fitted product will larger. 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.