Mineral Wool Insulation Around Chimney

Holes hidden in attics basements and crawlspaces are much harder to locate and usually cause bigger problems.

Mineral wool insulation around chimney.

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. 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. These are mounted directly onto the chimney and are fastened with straps. Mineral wools are an approved fire safeing product and are used for this all the time.

The recommended insulation for round chimneys where temperatures are below 300 c is load bearing lamella mats prorox ma 520 alu. There was no insulation in the chase before and we decided to go with mineral wool over fiberglass batt insulation which can come with its own integrated vapor barrier. This isolated the masonry from an r 60 blanket of cellulose insulation that was blown in place after all the airsealing measures were implemented. Due to pressure differences caused by stack e.

Its density is not high enough and its binder breaks down at less than 400 degrees f. Fiberglass home insulation is not considered an acceptable fire safeing product.