Rockwool / Discussions

Can Rockwool be installed over Type II EPS?

...Rockwool Comfortboard 80 over the EPS? When insulating the exterior of a house whether that’s a new home or adding insulation to an existing exterior wall, it is important not to trap moisture. Rockwool insulation is one of our preferred methods for adding insulation to the outside of a house because it is very resista...

Posted by Brian Bonnell March 30, 2020 Wall assemblies - renovation 1 response

How do you best use polyiso insulation in a basement?

...rockwool insulation, NO poly vapor barrier & ½” gypsum drywall, sealed with drywall sealer and painted with vapor barrier paint.  What problems do you see with this detail?  Thank you Polyiso rigid board insulation is a great product, but it does have its limitations. It is more expensive than EPS rigid insulation,...

Posted by Iain Matheson Jan. 24, 2020 Basements improvements 1 response

Which exterior insulation is best to create at thermal break in an bungalow in Alberta?

...rockwool or foam board and new siding. We need a cost effective solution to create a thermal and air barrier on our 1970s raised bungalow. We have a fully insulated (with spray foam) basement up to the rim joists. This space is now wonderful to live in.    However, at -40, we experience frost and freezing temperatures ...

Posted by Rebekah Barnes Jan. 17, 2020 Wall assemblies - renovation 1 response

What is the best way to insulate the basement of an old house?

...Rockwool comfort board then 2 x 4 studs with rockwool bats.  I've also seen the part about possible breaking floor for a complete reno.  I'm just wondering if the poly is against the concrete or between the 2" layer of EPS and stud wall,  as well as if poly extends to bottom of first floor or stop at top of concrete?  ...

Posted by Bryan Squirrell Jan. 14, 2020 Basements improvements 1 response