Roxul Vs Fiberglass Attic

However you can special order r 15 high density fiberglass batts.

Roxul vs fiberglass attic.

Fiberglass has an r value of 2 2 2 7 per inch while rockwool has an index of 3 0 3 3 per inch. Fortunately roxul has been proven to be more fire resistant than not just fiberglass but virtually every other insulation product on the market. But given that the material is fire resistant water resistant and highly efficient the small amount of extra money you spend on it. The larger the r value the better insulator the material is.

It is true that roxul can run up to ten percent more expensive than fiberglass and other insulation options. In damp locations rock wool retains its thermal and acoustic properties whereas fiberglass deteriorates so use the material that works best for the purpose you need it for. General use of rockwool and fiberglass. Fiberglass offers an r value of 2 2 to 2 7 per inch while rock wool has an r value of 3 0 to 3 3 per inch making it a slightly better insulator than fiberglass according to the u s.

This makes rockwool a little better at insulating than fiberglass. This combination results in a non combustible product which is a major advantage and it means that there are no additional flame retardants in the material. Mineral wool batts for 2 4 walls have an r value of 15 while a standard fiberglass batt made to fit in a 2 4 wall has an r value of 11 or 13. The pink foam strips act as lifts on the roof walls to prevent any insulation from trapping moisture.

I recommend using roxul in acoustic panels and traps and use the fiberglass in wall and ceiling cavities where it is fully closed in. The average house fire is about 1100ºf meaning rockwool can stand up to most dangers within a house fire and give you time to get out. Fiberglass is a bit less expensive but the difference felt in a completed room is remarkable while the installation of roxul dense bats cut with a bread knife is easy and less irritating. Insulation rockwool vs fiberglass in the past i ve been using roxul rockwool but i got a delivery of fiberglass by mistake and i am thinking hmmm maybe i ought to get this stuff taken back and get my roxul.

A fire can happen to anyone but using roxul can potentially help minimize the damage. The boiling point of a more common fiberglass insulation can average between 1 000 1 300ºf 537 7 704 4ºc.