I've read through that the usage of rock wool is widespread in Canada and Europe, the place it is typically mounted on the exterior side from the h2o-resistant barrier (WRB). It is also utilised as batt insulation and perhaps as being a blown-in merchandise within just masonry veneer air Areas.

I am not recommending it- only speculating concerning why they Employed in the job in that video. They failed to deal with it in the movie, but could be important, In particular since the product or service employed is Probably the most vapor retardent housewraps at this time out there, and equivalent in vapor retardency to latex paint on wallboard.

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Mineral wool is NOT a vapor retarder, not even a little bit. Mineral wool is air permeable, and mositure can migrate suitable as a result of as well.

Below in Northern Minnesota that insulation technique that ideal retards heat transfer is psychologically felt as hotter; we recognize Individuals strategies and supplies that create a very low sloped heat transfer gradient.

We renovated two rooms and insulated the outside walls with Rockwool Comfortbatt R15s. I really such as rigidity and density in the Comfortbatt products and solutions and am wanting to system the very best approach for an attic put in. The rafters and joists are two×six lumber spaced 16″. I realize we have to allow ventilation even though the soffit and will insert made or Do it yourself soffit baffles.

Some builders have started putting in a continual horizontal layer of mineral wool insulation beneath concrete slabs

Along with a positive relationship to the present wall plates we have been in a position to eliminate the structural masses on the existing two×six roof rafters, which ended up equally structurally undersized and not able to handle A great deal insulation inside of their minimal depth.

Better of luck using your venture, your home must be a lot more snug and Vitality efficient just after your initiatives. Make sure you post a fresh question when you or your contractor could use more details or Thoughts on some subject.

You wouldn't need to have to try this with a roof, but I would consider using some sort of ventilation baffles, both web-site crafted (one/2" polyiso website functions perfect for that), or a little something premade like Duravent.

“With ample exterior insulation to circumvent condensation, an airtight layer on the sheathing, and a fairly airtight layer at the inside, I don’t think the choice of insulation can make a major big difference,” Maines claims.

Intumescent paints and sealants increase when heated, and they are used for fire blocks. I would NOT use such a paint about the mineral wool. It isn't really required for hearth proofing both, the mineral wool alone is already primarily hearth evidence (and is particularly used for fire stopping). There is absolutely no profit to Placing intumescent coatings on wires and pipes.

I didn't find mineral wool in the slightest degree uncomfortable to work with. I'm not a terrifically handy human being and I mounted mineral wool batts all throughout the leading of my basement partitions (right after air sealing), chopping and cobbling as necessary to fit odd-formed bays.

inside the cavity is lower. and Boosts permeability when RH is earlier mentioned sixty% in summertime to Permit dampness escape when wanted.