Mineral Wool Attic Insulation

Mineral wool batts for 2 4 walls have an r value of 15 while a standard fiberglass batt made to fit in a 2 4 wall has an r value of 11 or 13.

Mineral wool attic insulation.

Thermafiber insul fill blown in attic mineral wool insulation is a premium loose fill product specifically designed for blown applications in new and existing structures. Because of its density mineral wool is hard to compress. Thermafiber insul fill blown in attic mineral wool insulation is a premium loose fill product specifically designed for blown applications in new and existing structures. In an ideal world i d take out all the existing insulation clean up install baffles air seal and then blow in insulation.

Mineral stone wool insulation batts are slightly better insulators than the off the shelf fiberglass batts sold at most lumberyards and home centers. It can be used as the primary building insulation or as additional insulation in walls and ceilings of existing structures. Mineral wool insulation has superior sound deadening properties. Mineral wool is composed of 70 of recycled content as compared to fiberglass insulation which is composed of only 30 of recycled content.

It has a density of 1 7 pounds per cubic foot as compared to 0 5 to 1 0 for fiberglass. Installing stone wool insulation in the attic space of a low slope roof can provide increased thermal efficiency. 1600 sq ft attic currently r 13 batts with lots of voids. Like cellulose insulation blown mineral wool can be installed in netted stud bays or spray applied with adhesive into bare stud cavities.

Lastly mineral wool costs less then fiberglass as it only costs around 1 per square feet. The semi rigid batts are more dense than traditional batts or rolls and are quick and easy to install. I m planning to airseal and reinsulate over the next month or two and need some help deciding between mineral wool or cellulose. Therefore i would recommend you to use mineral wool for thermal insulation.

Thermafiber fire and sound guard mineral wool insulation batt 24 bags. Mineral wool insulation for the same wall runs about 1 to 1 10 per square foot. It can be used as the primary building insulation or as additional insulation in walls and ceilings of existing structures.