Mineral Fiber Insulation Vs Fiberglass

Fiber glass mineral wool engineered to outperformtm vs.

Mineral fiber insulation vs fiberglass.

Fiberglass has an r value of approximately 2 2 to 2 7 per inch of thickness. Mineral wool is a stone based mineral fiber insulation comprised of basalt rock and recycled steel slag. For example insulating a 10 square foot wall area to r 15 costs about 3 40 to 4 00 with fiberglass insulation while a comparable r value for rigid foam costs roughly 10. Fiberglass insulation by daisy cuinn hunker may earn compensation through affiliate links in this story.

Fiberglass insulation is less than half the price of rigid foam insulation when calculated by r value per square foot. When building or remodeling a house the issue of insulation is an important one. Mineral wool insulation or rockwool typically costs more per inch than fiberglass insulation. As an example the r 15 mineral wool costs about 80 per sq.

There are at least three brands of mineral wool batts for thermal wall insulation. Fiber glass mineral wool vs. Both types are popular and readily available. The manufacturing process involves taking molten rock and spinning it while blasting it with cool air.

Mineral wool is easier to install correctly more water resistant and with a better r value. Fiberglass is a non organic product made from melted glass spun into a mat of fine fibers. Thanks gregory for the excellent article which should help dispel common misconceptions about mineral wool vs fiberglass. Johns manville tempcontrol roxul comfortbatt and thermafiber ultrabatt.

Overall mineral wool batts are a much better product than fiberglass. On a square foot basis mineral wool batts cost more than fiberglass batts. How they stack up. Prices can vary at any time but expect to pay around 0 10 more per inch for mineral wool versus fiberglass.

It costs about about 25 to 45 more than fiberglass but i feel its benefits more than justify the additional costs. Be aware though that. Mineral wool has a slightly higher r value ranging between 3 0 and 3 3 per inch. Comparing the facts no matter what the building challenge fiber glass and mineral wool insulation have the product variety application flexibility and value to help satisfy every job s demands.

With so many insulation types and sometimes conflicting information on the safety of insulation materials it s vital to weigh the pros and cons. Determining the final selection is often based on cost temperature range or meeting a certain specification. Mineral wool is a great solution for the firebreaks required at the top of stud walls and for the linear breaks required every 10 along a basement wall.