Mineral Wool Insulation R Value Per Inch

It is available in multiple thicknesses densities and various facings by product type.

Mineral wool insulation r value per inch. Rock wool generally costs more than fiberglass insulation. R value at 75 f 3 7 per inch of thickness. The r value of thermafiber mineral wool insulation ranges from 3 7 4 2 per inch of thickness. For use as insulation sheep s wool is also treated with borate to resist pests fire and mold.

Asbestos lagging and paste will have a lower value. Astm e970 0 12 w cm 2 0 11 btu ft 2 s water vapor. Asbestos cement board r value. The higher an insulation s r value the greater its insulating power.

Sheep wool insulation r value equals or often surpasses that of other insulation materials. 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. Johns manville mineral wool batts are made of inorganic fibers derived from basalt a volcanic rock and are enhanced with glass fibers. 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.

Up to 4 3 r value per inch of thickness. 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. Our calculator helps you measure what r value for exterior walls you may be looking for as well as for different applications. Ceiling insulation r value r value for walls and more.

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. 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. 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.

Along with knowing the r value of a particular insulation it is also important to calculate the r value of a total system. 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. The r values of each product are 3 6 per inch and 4 3 per inch respectively. Its high resistance to heat flow translates into.

For example a wall with 3 fiberglass batting r value of 10 8. Fire resistant to temperatures above 2 000 f 1 093 c. Havelock wool offers both wool batt and blow in insulation. Reflected by its r value mineral wool s insulating performance is achieved by its densely packed fibers.