Attic Insulation Rockwool Vs Fiberglass

Fiber glass mineral wool vs.

Attic insulation rockwool vs fiberglass.

Rock wool generally costs more than fiberglass insulation. Fiberglass has an r value of 2 2 2 7 per inch while rockwool has an index of 3 0 3 3 per inch. Attic insulation is accomplished with either fiberglass blankets batt or blown in insulation. Fiberglass insulation rated at r 15 to fit a standard 4 inch wall costs around 0 50 per square inch as of 2013 according to fine.

Attic and pipe insulation applications. Cellulose insulation comes in three types and is used exclusively for attics and wall cavities. This makes rockwool a little better at insulating than fiberglass. Blown in insulation requires a professional.

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. Learn more about their properties before choosing. Fiberglass and rock wool absorb less than 1 percent of their weight whereas cellulose absorbs 5 20 percent of its weight. This is one of the most cost effective areas to add insulation.

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. Loose fill fiberglass insulation provides a quick easy and economical way to insulate attic floors and wall cavities. Before choosing blown vs.

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. When comparing rockwool versus fiberglass insulation both materials offer similar levels of heat resistance and ease of installation. Batt insulation is available at home centers and lumberyards. 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. General use of rockwool and fiberglass. Achieving greater r values in attics the higher the r value the better the thermal performance of the insulation. Batt insulation take time to read this column.

Rockwool is actually r23 5 1 2 so you re right it can carry a higher r value there. Insulation project calculator how to install naima r value certification product training videos colab learning video library for pros distributor locator why owens corning insulation propink vs. If fiberglass insulation gets wet it becomes soggy and its insulating value drops significantly.