Mineral Wool Insulation R Value Per Inch

Reflected by its r value mineral wool s insulating performance is achieved by its densely packed fibers.

Mineral wool insulation r value per inch.

It is available in multiple thicknesses densities and various facings by product type. 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. Sheep wool insulation r value equals or often surpasses that of other insulation materials. Exceptional sound and noise absorption.

The higher an insulation s r value the greater its insulating power. For use as insulation sheep s wool is also treated with borate to resist pests fire and mold. Along with knowing the r value of a particular insulation it is also important to calculate the r value of a total system. 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.

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. Its high resistance to heat flow translates into. For example a wall with 3 fiberglass batting r value of 10 8. The r values of each product are 3 6 per inch and 4 3 per inch respectively.

Up to 4 3 r value per inch of thickness. Estimated r value of asbestos insulation per inch for pipe insulation corrugated paper. 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. The r value of thermafiber mineral wool insulation ranges from 3 7 4 2 per inch of thickness.

Astm e970 0 12 w cm 2 0 11 btu ft 2 s water vapor. Johns manville mineral wool batts are made of inorganic fibers derived from basalt a volcanic rock and are enhanced with glass fibers. Asbestos cement board r value. Fire resistant to temperatures above 2 000 f 1 093 c.

R value at 75 f 3 7 per inch of thickness. R value denotes resistance to heat flow. Havelock wool offers both wool batt and blow in insulation. 3 3 4 5 mineral wool r 11 6 1 2 8 3 4 mineral wool r19 7 1 2 10 mineral wool r22.

Asbestos lagging and paste will have a lower value. 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. Our calculator helps you measure what r value for exterior walls you may be looking for as well as for different applications. Rock wool generally costs more than fiberglass insulation.