Rockwool / Discussions

Can you Insulate a Cinder block basement foundation with Rockwool?

...Rockwool to avoid moist warm interior air condense on the rim joist behind Rockwool (between rim joist and Rockwool ) . I am planing on placing drywall on the w...

Posted by Victor B June 19, 2019, 11:41 p.m. Basements improvements 5 Responses

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 ins...

Posted by Rebekah Barnes Jan. 17, 2020, 10:07 p.m. Wall assemblies - renovation 0 Responses

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...

Posted by Bryan Squirrell Jan. 14, 2020, 7:59 p.m. Basements improvements 1 Responses

What is the best way to frame window openings when adding exterior insulation?

Building a new home (2x6); want to add 2-4" of rockwool on the outside; would like my windows to sit in the outside 1/3 of the frame; most of the windows are s...

Posted by Anwas Qwelten May 30, 2019, 8:16 p.m. Windows and doors 1 Responses

What is the best way to insulate rim joists with EPS and batts?

...rockwool batt), and then drywall. Which one of these approaches should I use? 1) Sandwich multiple EPS pieces againt rim joists/cripple wall cavities and buil...

Posted by Steve J July 18, 2019, 3:53 p.m. Basements improvements 1 Responses

What do I in my basement where new insulation meets old?

I’m insulating my basement with 2” of EPS against poured concrete foundation, then framing a 2x4 wall, then adding Rockwool. Unfortunately, due to some areas, ...

Posted by Steve J July 20, 2019, 10:01 p.m. Basements improvements 2 Responses

What is the best way to seal around windows?

...rockwool and seal it with tape on the inside? Any suggestions will help. A good place to start is our page about How to Install Windows & Doors Correctly that i...

Posted by Bryan Squirrell Oct. 8, 2019, 8:53 p.m. Windows and doors 1 Responses

Is it normal that condensation forms on the windows of my new home?

...rockwool and R3 panel insulation. The windows are double glazed wood and aluminum. I do not have an air exchanger yet, I’m wondering if that is part of the prob...

Posted by Kevin Newman April 19, 2017, 10:30 a.m. Ventilation 1 Responses

How do you seal windows from the exterior for water and air but not create a vapor seal?

...Rockwool to insulate the gap and tape for water, air and vapor barrier. I am concern that taping it outside might cause the vapor sandwich which I want to avoid...

Posted by Piyush Prince Nov. 7, 2018, 12:10 a.m. Windows and doors 1 Responses

I have many issues with my house where should I start?

...Rockwool over? Or another product? Thanks. Bryan Vermiculite can often be contaminated with Asbestos , so I assume that is the testing that you did, and gre...

Posted by Bryan Squirrell Sept. 29, 2019, 3:08 p.m. Wall assemblies - renovation 1 Responses

Basement reno - How do I effectively insulate my basement?

...Rockwool R14 +Drywall +moisture/vapour barrier laytex paint. Which EPS thickness should I go with? Concrete Slab: DMX aiflow dimple mats +(3/4" EPS, needed? )...

Posted by Steve J Feb. 13, 2019, 10:25 p.m. Foundation and basement improvements 2 Responses

What is the best foam board insulation under drywall

...Rockwool and about 1" of foam board insulation attached to the stud and seams taped. Then I would set 1/2" drywall on top of the foam and attached with long scr...

Posted by Wesley Pracht Jan. 11, 2020, 8:10 p.m. Wall assemblies - renovation 1 Responses

What is the best way to insulate a 1780 brick federal with stone foundation in New York?

...rockwool or EPS . If you are doing the exterior then you can follow the procedures for exterior insulation here in page about the best way to insulate basements...

Posted by carole roseman Jan. 5, 2020, 2:39 p.m. Foundation and basement improvements 1 Responses

How do you insulated a crawlspace with dirt floor?

...rockwool in the ceiling of the crawlspace with no Vapor Barrier…. we would very much appreciate your input and advice. Cheers, Sal The first thing to mention ...

Posted by sal Bellicoso Oct. 30, 2019, 4:56 p.m. Crawl spaces 1 Responses

What is the best way to insulate a home from the outside?

...Rockwool (made of recycled stone dust), as it lets moisture pass through freely and isn’t harmed by it or even bulk water. EPS foam would be my second choice, t...

Posted by Sylvie Gagnon Dec. 12, 2017, 11:58 a.m. Wall assemblies - renovation 1 Responses

Is the ZIP sheathing system good or bad for water control?

...Rockwool batts in the wall and 8 inches of Rockwool rigid insulation boards on the exterior. As for cost comparison of ZIP sheathing vs normal sheathing and h...

Posted by Trevor Prinz Nov. 26, 2019, 4:03 p.m. Walls and Roofs 4 Responses

I want to insulate the outside of my house, which type of insulation do you think is best?

...Rockwool rigid board insulation (known as Roxul prior to re-branding). It’s sort of a failsafe insulation in the sense that air goes through it, moisture goes t...

Posted by Joe F Nov. 15, 2017, 10:34 a.m. Wall assemblies - renovation 7 Responses

Can you install foam boards directly against basement walls?

...Rockwool and then drywall overtop. a 6 mil poly barrier before drywall will prevent your wall from drying, hopefully your municipal building inspector will let ...

Posted by Ted Gorab Oct. 3, 2019, 6:09 p.m. Basements improvements 4 Responses