Insulation Attic Fiberglass Vs Rockwool

As an example the r 15 mineral wool costs about 80 per sq.

Insulation attic fiberglass vs rockwool.

Fiberglass has an r value of 2 2 2 7 per inch while rockwool has an index of 3 0 3 3 per inch. One you will need to choose the material fiberglass mineral wool cotton or sheep s wool. Attic had 4 12 inches of blown insulation cellulose not sure if fiberglass also that was getting into recessed lights of 2nd floor. General use of rockwool and fiberglass.

Mineral wool will not support or grow mold or mildew and it is also a fire resister and a fire retardant. Both materials are versatile and popular choices among. On a square foot basis mineral wool batts cost more than fiberglass batts. There are at least three brands of mineral wool batts for thermal wall insulation.

Rock wool generally costs more than fiberglass insulation. Cellulose insulation comes in three types and is used exclusively for attics and wall cavities. Be aware though that. Johns manville tempcontrol roxul comfortbatt and thermafiber ultrabatt.

Fiberglass insulation for a 2 6 wall costs between 57 cents and 72 cents per square foot. February 29 2020 at 1 16 pm. Batts are pieces of blanket insulation that are pre cut to manageable sizes 15 24 inches wide by 48 or 93 inches long while rolls are strips of insulation similar to batts in width. If you plan to add thermic insulation to your room as well consider this.

And two you will have to decide whether to use batts or rolls. Mineral wool insulation for the same wall runs about 1 to 1 10 per square foot. 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. In the unfortunate event that a fire starts in an attic or in between walls where mineral wool insulation is used it will actually slow and retard the progression of the fire.

Hi 1930 s 18 inch philadelphia suburb home w 18 thick stone walls and 18 thick stone foundation. 35 thoughts on mineral wool vs. Comparing the facts no matter what the building. Mineral wool insulation has superior sound deadening properties.

Mineral wool insulation or rockwool typically costs more per inch than fiberglass insulation. It has a density of 1 7. Fiberglass insulation s says. Fiberglass insulation costs 25 to 50 percent less than mineral wool.

Prices can vary at any time but expect to pay around 0 10 more per inch for mineral wool versus fiberglass. Both types are popular and readily available.