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 i...

Posted by Brian Bonnell March 30, 2020, 11:04 a.m. Wall assemblies - renovation 1 Responses

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

Halo Exterra rigid exterior insulation - has anyone work with it?

...Rockwool or 4 inches of Halo rigid insulation, I'd be less concerned that if you were only putting 1 inch of Halo. If you go with Rockwool then I imagine the ...

Posted by George Shannon Jan. 21, 2020, 3:39 p.m. Insulation and soundproofing 3 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 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 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

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

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

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...

Posted by Iain Matheson Jan. 24, 2020, 7:45 p.m. Basements improvements 1 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

Followup to the question How do you install Larsen Trusses on a home in Minneapolis?

...Rockwool Comfort Board 80 option too. Would it work to use a self adhering WRB, on the sheathing and then insulate with 8" of Rockwool Board or is there too muc...

Posted by Ken Traefald Feb. 27, 2020, 1:49 p.m. Wall assemblies - renovation 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

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

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

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

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