Mineral Wool Insulation Around Chimney

Fiberglass home insulation is not considered an acceptable fire safeing product.

Mineral wool insulation around chimney. Thermafiber fire and sound guard mineral wool is thermafiber fire and sound guard mineral wool is designed to provide exceptional acoustic control and fire protection in interior walls as well as floor and ceilings in residential and light commercial construction. Holes hidden in attics basements and crawlspaces are much harder to locate and usually cause bigger problems. Its density is not high enough and its binder breaks down at less than 400 degrees f. Mineral wools are an approved fire safeing product and are used for this all the time.

This isolated the masonry from an r 60 blanket of cellulose insulation that was blown in place after all the airsealing measures were implemented. For the future insulation inspection the inspector told us that he wants to see a vapor barrier on the mineral wool we used in the chimney chase. Fire and sound guard is fire resistant to temperatures above 2000f allowing for additional time to exit the structure in the event of a fire. However the better method for filling voids in a chimney flue liner to the full height of the flue is to use vermiculite chips can be bought for insulation purposes or as soil treatment check around for best prices.

Due to pressure differences caused by stack e. The recommended insulation for round chimneys where temperatures are below 300 c is load bearing lamella mats prorox ma 520 alu.