Roxul Rockboard Insulation Panel is a rigid panel insulation made of mineral wool that is lightweight, waterproof, fire-resistant and that absorbs sound. This product is designed for general use while offering a low thermal conductivity. Made from basalt (or volcanic rock) and slag.

Is it OK for Rockwool to get wet?

2) What happens if ROCKWOOL insulation gets wet? ROCKWOOL insulation is moisture resistant yet vapor permeable. In the event the insulation becomes damp or wet, the insulation, when thoroughly dried, will maintain the original performance characteristics.

What is the difference between Roxul and rockwool?

ROXUL Inc., the North American division of the ROCKWOOL GROUP, the world’s largest stone wool manufacturer, announces it will commence a full rebrand to ROCKWOOL. The ROCKWOOL brand has been marketed proudly and internationally for 80 years and now will be adopted in North America*.

Does Roxul insulation need a vapor barrier?

roxul Comfortbatt is an unfaced semi-rigid batt insulation and a vapor retarder may be required by building code depending on the geographic location of the building. The use of a vapor retarder will limit the amount of water vapor that will move to the outside wall – reducing condensation in the wall assembly.

Which is better Roxul or fiberglass?

Water resistance: While fiberglass insulation tends to soak water up like a sponge, Roxul is incredibly water resistant. If you worry about mold or mildew growing in your insulation, or you live in an area that is prone to floods or other storm issues, then Roxul is the naturally superior choice.

What insulation is waterproof?

Foam board insulation doesn’t absorb water, which essentially limits the amount of moisture build-up in your insulation. Polyiso and extruded polystyrene foam boards have the strongest waterproof properties.

Does rockwool need to be covered?

See our findings below. It is completely safe to leave mineral wool insulation exposed. Additionally, mineral wool is extremely durable, resisting fire, water, mold, and deterioration. However, if damaged, it can begin to deteriorate, and particles may become airborne.

When did roxul change to Rockwool?

January 9, 2018

ROXUL is now ROCKWOOL. Milton, ON (January 9, 2018) – ROXUL is now ROCKWOOL in North America. Effective January 1^st, the company officially adopted the name of its global parent company: ROCKWOOL–the world’s largest manufacturer of stone wool products.

Is roxul good insulation?

The improved thicknesses makes it a perfect acoustic insulation and its capacity to avoid heat loss. Roxul protection commonly offers more acoustic protection properties than other routine options utilized or introduced. Because of Roxul insulation being made out of stone, it offers certain advantages.

What is the R-value of Roxul?

between 3.0 to 3.3 per inch

Rockwool has excellent heat retention.



While fiberglass insulation is capable of offering an R-value of about 2.2 to 2.7 per inch of insulation, Rockwool has an R-value between 3.0 to 3.3 per inch of insulation.

Is Roxul safe and sound worth it?

I put the Safe ‘n’ Sound around all my laundry room, bathrooms, bedrooms, and in the basement ceiling. Not only does it provide sound proofing, it has other benefits as well. Such as fire resistant and no mildew can grow on it. I am so glad my builder let me install this product on my own.

Is Rockwool cancerous?

The EPA has classified refractory ceramic fibers as probable human carcinogens. The International Agency for Research on Cancer (IARC) has determined glass filaments, glass wool, rock wool, and slag wool to not be classifiable as to their carcinogenicity to humans (Group 3).

Is Rockwool insulation good for exterior walls?

ROCKWOOL ROXUL SAFE™ 55 & 65 are medium-density insulation products for interior and exterior firewall applications where fire resistance of at least 1 hr. is required.

Can I use Roxul insulation on exterior walls?

ROXUL COMFORTBOARD™ IS: Rigid stone wool insulation board fastened to outside studs to improve thermal performance to the building envelope. ROXUL COMFORTBATT™: Thermal insulation for use in exterior walls, attics and crawl spaces. It provides indoor comfort and energy savings all year round.

Can you use roxul safe and sound on exterior walls?

It’s not thermal insulation. Roxul Safe’n’Sound is designed specifically for one purpose – soundproofing. It is not intended for thermal applications like insulating exterior walls or attics. The optimized density that makes it an ideal sound barrier actually compromises its ability to prevent heat loss.

Is rockwool an air barrier?

Mineral wool, also commonly known as “Rockwool,” is not only an excellent insulator but is water-resistant, rot-proof, and will not melt or burn. Its water-resistant properties and impressive density allow it to work as a very effective vapor barrier.

Can you cut rockwool in half?

You can buy a special saw like this to cut the bats. But any serrated blade even a bread knife from your kitchen will work bats are sized to fit standard 16 inch or 24 inch on center stud spaces.

Is Rockwool itchy like fiberglass?

Like fiberglass, mineral wool contact can make you itch or even cause a mild rash. Some installers say it’s a little worse than fiberglass; some say a little better.