Attic Insulation Rockwool Vs Fiberglass

Both materials are versatile and popular choices among.

Attic insulation rockwool vs fiberglass.

Fiberglass has an r value of 2 2 2 7 per inch while rockwool has an index of 3 0 3 3 per inch. Fiber glass mineral wool vs. Blown in insulation requires a professional. Find your zone on the map and then use the chart to determine the level of insulation you need to properly insulate your attic walls floors and crawlspaces.

Attic insulation is accomplished with either fiberglass blankets batt or blown in insulation. Rock wool generally costs more than fiberglass insulation. Spray foam pink fiberglas vs. Learn more about their properties before choosing.

Fiberglass may be cheaper but this reduced cost comes with less soundproofing and fire resistance qualities. If your insulation is wet you have a lot bigger problems than worrying about your r value diminishing. Before choosing blown vs. This is one of the most cost effective areas to add insulation.

If fiberglass insulation gets wet it becomes soggy and its insulating value drops significantly. Use rockwool thermal stone wool insulation to insulate the attic of a new build extension or to increase the r value and top up the current attic insulation especially in an older home. Cellulose insulation comes in three types and is used exclusively for attics and wall cavities. Batt insulation is available at home centers and lumberyards.

Batt insulation take time to read this column. Fiberglass and rock wool absorb less than 1 percent of their weight whereas cellulose absorbs 5 20 percent of its weight. Rockwool is actually r23 5 1 2 so you re right it can carry a higher r value there. This makes rockwool a little better at insulating than fiberglass.

General use of rockwool and fiberglass. Plenty of fiberglass manufacturers make high density batts such as r 15 for a 2 4 wall or r 21 for a 2 6 wall. Loose fill fiberglass insulation provides a quick easy and economical way to insulate attic floors and wall cavities. Attic and pipe insulation applications.

Loose fill mineral wool does exist but it s difficult to find. If you plan to add thermic insulation to your room as well consider this. Achieving greater r values in attics the higher the r value the better the thermal performance of the insulation.