Mineral Wool Insulation R Value Per Inch

In comparison an inch of blown fiberglass insulation has an r value of 3 1 3 4 and an inch of blown cellulose in an attic has an r value of 3 2 3 7.

Mineral wool insulation r value per inch.

Its high resistance to heat flow translates into. 3 3 4 5 mineral wool r 11 6 1 2 8 3 4 mineral wool r19 7 1 2 10 mineral wool r22. Exceptional sound and noise absorption. Estimated r value of asbestos insulation per inch for pipe insulation corrugated paper.

Asbestos cement board r value. Reflected by its r value mineral wool s insulating performance is achieved by its densely packed fibers. It can hold large quantities of water which is an advantage for use in some walls but repeated wetting and drying can leach out the borate. Ceiling insulation r value r value for walls and more.

Cavityrock is a semi rigid insulation board designed for exterior cavity wall and rainscreen applications. Astm e970 0 12 w cm 2 0 11 btu ft 2 s water vapor. Asbestos lagging and paste will have a lower value. R value denotes resistance to heat flow.

For use as insulation sheep s wool is also treated with borate to resist pests fire and mold. It is available in multiple thicknesses densities and various facings by product type. Sheep wool insulation r value equals or often surpasses that of other insulation materials. Johns manville mineral wool batts are made of inorganic fibers derived from basalt a volcanic rock and are enhanced with glass fibers.

The r value of thermafiber mineral wool insulation ranges from 3 7 4 2 per inch of thickness. Up to 4 3 r value per inch of thickness. The r values of each product are 3 6 per inch and 4 3 per inch respectively. R value is a measurement that rates how resistant a product is to heat flow measuring the ability of heat to transfer from one side of an object to another.

The higher an insulation s r value the greater its insulating power. Our calculator helps you measure what r value for exterior walls you may be looking for as well as for different applications. Fire resistant to temperatures above 2 000 f 1 093 c. For example a wall with 3 fiberglass batting r value of 10 8.

Sheep s wool batts for a 2 by 4 inch and 2 by 6 inch stud framed wall offer an r 13 and r 19 value. Fiberglass insulation rated at r 15 to fit a standard 4 inch wall costs around 0 50 per square inch as of 2013 according to fine. These products offer superior long term thermal efficiency fire resistance moisture control acoustic performance and are compatible with numerous framing systems and cladding attachment systems. Rock wool generally costs more than fiberglass insulation.