Mineral Wool Insulation R Value Per Inch

Astm e970 0 12 w cm 2 0 11 btu ft 2 s water vapor.

Mineral wool insulation r value per inch.

It is available in multiple thicknesses densities and various facings by product type. 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. Our calculator helps you measure what r value for exterior walls you may be looking for as well as for different applications. 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. 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. R value denotes resistance to heat flow. Asbestos cement board r value.

Sheep wool insulation r value equals or often surpasses that of other insulation materials. Asbestos lagging and paste will have a lower value. 3 3 4 5 mineral wool r 11 6 1 2 8 3 4 mineral wool r19 7 1 2 10 mineral wool r22. Up to 4 3 r value per inch of thickness.

Havelock wool offers both wool batt and blow in insulation. Johns manville mineral wool batts are made of inorganic fibers derived from basalt a volcanic rock and are enhanced with glass fibers. The r values of each product are 3 6 per inch and 4 3 per inch respectively. 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.

Exceptional sound and noise absorption. 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. Cavityrock is a semi rigid insulation board designed for exterior cavity wall and rainscreen applications. Rock wool generally costs more than fiberglass insulation.

For example a wall with 3 fiberglass batting r value of 10 8. Ceiling insulation r value r value for walls and more. R value at 75 f 3 7 per inch of thickness. For use as insulation sheep s wool is also treated with borate to resist pests fire and mold.

Its high resistance to heat flow translates into. Reflected by its r value mineral wool s insulating performance is achieved by its densely packed fibers. The higher an insulation s r value the greater its insulating power. 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.