Roxul / Discussions

...Roxul) had a specific batt called 'safe and sound' that is marketed for reducing sound, but the difference they found between the two products wasn't much more than a different coloured label. They both worked about the same apparently. So if you can find mineral wool batts locally but not ones that say anything about ...

...Roxul tech support was not very helpful with this question (she seemed unfamiliar with the detail), so I am wondering if anyone has had experience with this?  Thank you! Yes, you can use Rockwool comfortboard mineral wool insulation at foundation skirting. We did just that on our 2015 demo house project, and the compan...

...roxul and 6 mil vapour under drywall. (No AC) The exterior is poor mans board and batten. (1/2" plywood with 1x2 battons at 16"oc.) This combination, with a 4000 watt fan heater, costs about an additional $150 to $200 in hydro per month if I heat it to 16 degress C for 6 to 8 hours a day and maintain 'frost free' at ni...

...roxul based on price, strapping, new siding. Is it worth densepacking the walls before doing the WRB? The kraft paper falling apart or separating from the insulation is no great concern, and you could blow in cellulose without causing any problems, but there is an easier and cheaper way. First check out this page on in...

I have seen pictures of 1.5 inch Rock Wool covering the entire basement walls. Then the stud framing goes on. Then additional bats or Rock Wool boards installed between the frame stuctures. I do not want to finish the basement any time soon, but I want to insulate it. I have put the Rock Wool in the rim joices. I had o...

8" semi rigid and 5 1/2" between the studs.  why not use 8" semi rigid, 3 1/2" between the studs and 2 " more semi rigid on the inside beneath the gyprock?  Is that possible? Hi Tom, 2x4s can be used for homes no problem, but it definitely fattens up the posts required between windows. The sections of wall between the ...

I am looking for advise on how to insulate CMU walkout basement with Rockwool insulation.  I have one wall fully above ground (walkout side) one wall fully below ground (opposite side) And 2 walls that grade slopes down from top of the wall (100%underground ) to bottom of the wall (100% above ground) when it gets to wa...

I found a video of a house using the thermal or T-stud. Have you seen this product and what are your thoughts on its use in Canada. It allows for a fully insulated header above window and doors which is often a weak point of a House. The install of electrical and plumbing is also interesting as they just stab it throug...

...Roxul) and Johns Manville. The other think you'll need is a weather barrier / weather resistive barrier (WRB), and a breatheable one would serve you best to allow as much moisture to pass through as possible. read more here -  Choosing a house wrap, which is best? Exactly how much insulation to add is a tough question ...

Hello, We are redoing our basement ourselves (zone 5, Toronto) and on a budget after gutting the entire finished basement due to extensive moisture penetration and mold issues. The foundation/walls are concrete block and we have 2 sides done with interior plastic membrane to french drain and sump pump, one side exterio...