Rigid Roof Insulation R Value Per Inch

Jm is proud to be a pima member and have its product third party certified under the pima quality mark program.

Rigid roof insulation r value per inch.

Traditional loose fill insulation such as fiberglass or cellulose has an r value between r 2 0 and 3 5 per inch of thickness. Asbestos loose packed fibers powder. Rigid insulation is usually made up of fibrous materials or plastic foams. Estimated r value of asbestos insulation per inch for pipe insulation corrugated paper.

Working with home insulation boards insulation panels typically come in 4x8 foot sheets. So you need to know an insulation product s thickness as well as its r value in order to compare it to another product. Smaller sizes are also available. Products with foil facing help the panels resist moisture vapor.

Asbestos corrugated paper pipe insulation. Jm revised lttr values. Falls in the middle of the three types of rigid foam insulation in both cost and r value used most in walls or below grade applications recyclable and at about r 5 per inch costs around 42 per sq. Asbestos cement shingle siding.

It provides about r 5 per inch. Jm suggests that design professionals use 5 7 r inch as a design specification for its foam products. Polyiso still remains the highest r value per inch of any available insulation. Thermal conductivity k 0 15.

Eight inches of poor quality insulation may have a higher and better r value than one inch of top quality insulation. This material offers the highest r values about r 6 to 6 5. Asbestos cement board r value. Asbestos lagging and paste will have a lower value.