Mineral Wool Insulation Around Chimney

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

Mineral wool insulation around chimney.

The recommended insulation for round chimneys where temperatures are below 300 c is load bearing lamella mats prorox ma 520 alu. Holes hidden in attics basements and crawlspaces are much harder to locate and usually cause bigger problems. 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. These are mounted directly onto the chimney and are fastened with straps.

Once the air seal was accomplished jerome installed a roxul mineral woolinsulation barrier around the 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. Its density is not high enough and its binder breaks down at less than 400 degrees f. 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.

Mineral wools are an approved fire safeing product and are used for this all the time. Due to pressure differences caused by stack e.