Stone Wool Mineral Fiber 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.
Stone wool mineral fiber insulation. Slag wool was first made in 1840 in wales by edward parry but no. What is mineral wool. Mineral stone wool insulation batts are slightly better insulators than the off the shelf fiberglass batts sold at most lumberyards and home centers. It costs about about 25 to 45 more than fiberglass but i feel its benefits more than justify the additional costs.
Mineral wool insulation will not contain any fiberglass. Mineral wool is a stone based mineral fiber insulation comprised of basalt rock and recycled steel slag. Rockwool comfortbatt is a semi rigid stone wool batt rockwool comfortbatt is a semi rigid stone wool batt insulation for exterior wood and steel stud applications in both new construction and renovations. It features a unique flexible edge designed to compress as the batt is inserted then spring back expanding the batt against the frame studs to give a complete fill.
Sound absorbent for acoustic comfort. The non directional structure of rockwool stone wool insulation is denser than traditional insulation products which helps to absorb acoustic waves and can reduce the intensity and propagation of noise stone wool also effectively reduces airflow and sound transmission while providing higher airflow resistivity for improved sound attenuation. The manufacturing process involves taking molten rock and spinning it while blasting it with cool air. Therefore properly the term mineral wool insulation is a proper subset of mineral fiber insulation.