How Thick Is R30 Roof Insulation

R30 to r49 r25 to r30 r13 n a 2 r30 to r60 r25 to r38 r13 to r19.

How thick is r30 roof insulation.

Thick and provides the 1 inch of air space between the insulation and roof deck. The r30 kraft faced batts insulation has pre cut widths to fit between the studs and joists in your home. Open cell polyurethane spray foam 3 5 inches thick 12 6. If you think you re among the 90 of us homes that are under insulated 1 performing a simple insulation inspection will help you determine your insulation needs.

A recent mckinsey co. So you need to know an insulation product s thickness as well as its r value in order to compare it to another product. R30 c is 8 in. See the department of energy s doe ranges for recommended levels of insulation below.

Typical recommendations for exterior walls are r 13 to r 23 while r 30 r 38 and r 49 are common for ceilings and attic spaces. As a foil faced polyisocyanurate foam insulation enerfoil tm s r value actually more than doubles. Owens corning ecotouch insulation is soft to the owens corning ecotouch insulation is soft to the touch easy to cut and install. Drill holes in the sheathing and blow insulation into the empty wall.

Rigid foam insulation provides the same r factor with approximately one half the thickness. Wall insulation whenever exterior siding is removed on an. Having the correct amount of attic insulation can help you maintain a comfortable temperature throughout your home and help save money on your energy bills plus prevent major issues like ice dams in the winter. Ecotouch insulation is the reinvention of fiberglass insulation from owens corning the industry leader that invented fiberglass insulation.

It delivers comfort helping homes stay cooler in the summer and warmer in the winter to reduce energy costs. R30 c is designed to eliminate r value loss when compressing standard r 30 in 2x10 construction. 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 thickness to reach the r 30 value depends on the insulation material but fiberglass batts of r 30 insulation are 9 1 2 inches thick.

Eight inches of poor quality insulation may have a higher and better r value than one inch of top quality insulation. Our r value guide to rigid insulation includes the doe s recommended insulation by zone chart r value calculator and base building material r values chart.