Rigid Roof Insulation R Value Per Inch

Asbestos lagging and paste will have a lower value.

Rigid roof insulation r value per inch.

For a 1 in thick 4 8 panel comes unfaced or with a number of different plastic facings. The same insulation will hold more heat the thicker it is installed. Estimated r value of asbestos insulation per inch for pipe insulation corrugated paper. Asbestos loose packed fibers powder.

Traditional loose fill insulation such as fiberglass or cellulose has an r value between r 2 0 and 3 5 per inch of thickness. Jm is proud to be a pima member and have its product third party certified under the pima quality mark program. It provides about r 5 per inch. Smaller sizes are also available.

Rigid insulation is usually made up of fibrous materials or plastic foams. This material offers the highest r values about r 6 to 6 5. Polyiso still remains the highest r value per inch of any available insulation. Jm suggests that design professionals use 5 7 r inch as a design specification for its foam products.

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. Thermal conductivity k 0 15. So you need to know an insulation product s thickness as well as its r value in order to compare it to another product.

Asbestos cement board r value. Working with home insulation boards insulation panels typically come in 4x8 foot sheets. Asbestos corrugated paper pipe insulation. Asbestos cement shingle siding.