Insulation Attic Fiberglass Vs Rockwool

Both materials are versatile and popular choices among.

Insulation attic fiberglass vs rockwool.

This makes rockwool a little better at insulating than fiberglass. 35 thoughts on mineral wool vs. Attic and pipe insulation applications. 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.

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. And two you will have to decide whether to use batts or rolls. Be aware though that. Fiberglass insulation costs 25 to 50 percent less than mineral wool.

It has a density of 1 7. As an example the r 15 mineral wool costs about 80 per sq. Mineral wool will not support or grow mold or mildew and it is also a fire resister and a fire retardant. Fiberglass insulation s says.

Fiberglass has an r value of 2 2 2 7 per inch while rockwool has an index of 3 0 3 3 per inch. Hi 1930 s 18 inch philadelphia suburb home w 18 thick stone walls and 18 thick stone foundation. 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.

One you will need to choose the material fiberglass mineral wool cotton or sheep s wool. There are at least three brands of mineral wool batts for thermal wall insulation. Mineral wool insulation or rockwool typically costs more per inch than fiberglass insulation. Prices can vary at any time but expect to pay around 0 10 more per inch for mineral wool versus fiberglass.

Rock wool generally costs more than fiberglass insulation. Attic had 4 12 inches of blown insulation cellulose not sure if fiberglass also that was getting into recessed lights of 2nd floor. February 29 2020 at 1 16 pm. Both types are popular and readily available.

Mineral wool insulation has superior sound deadening properties. Mineral wool insulation for the same wall runs about 1 to 1 10 per square foot. If you plan to add thermic insulation to your room as well consider this. Fiberglass and rock wool absorb less than 1 percent of their weight whereas cellulose absorbs 5 20.

Comparing the facts no matter what the building. General use of rockwool and fiberglass.