Drywall / Discussions

What is the best foam board insulation under drywall

...drywall. My idea is to tear out the plywood and remove the old FB insulation. I would like to replace with R15 Rockwool and about 1" of foam board insulation at...

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

Does using T & G wood plank instead of drywall affect where we put the vapor & air barrier?

We want to use fir T and G for our interior walls instead of drywall (new build with plywood exterior sheathing and Tyvek - which will eventually have cedar sh...

Posted by Sue Colbourne Nov. 9, 2019, 6:16 p.m. Walls and ceilings - interior surfaces 3 Responses

How do you prevent mold in a finished basement?

We had a water leak in our basement earlier this year and when the contractors started pulling off damaged drywall we were disgusted to find that our basement ...

Posted by Brian Cole Nov. 22, 2019, 10:22 a.m. Basements improvements 1 Responses

How do you best use polyiso insulation in a basement?

...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 ...

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

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

...drywall. Which one of these approaches should I use? 1) Sandwich multiple EPS pieces againt rim joists/cripple wall cavities and build it out to EPS mounted a...

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

For home renovation, is it better to install insulation on the inside or outside?

...drywall to finish the room. Thanks Bricks as an exterior finish is 3 times the cost and 3 times the value of any other cladding, so I wouldn’t get rid of it...

Posted by Neil Richardson Jan. 29, 2019, 4:09 p.m. Wall assemblies - renovation 1 Responses

How to insulate an apartment you don't own?

...drywall and reinsulate but winter is coming and drafts are already getting in. Is there anything I can do to prevent that without upsetting my landlord? The wal...

Posted by Teresa Cunningham Oct. 21, 2019, 3 p.m. Wall assemblies - renovation 1 Responses

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

...drywall, and only vinyl on the outside. There are a lot of different kinds of rigid foam panel and I don't want to choose the wrong one, which do you recommend ...

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

Basement reno - How do I effectively insulate my basement?

...drywall, 2x2 studs, 6mm poly, r12 fiberglass insulation, and tar paper everywhere except laundry room, mechanical area, and beside stairs. Total basement sqft i...

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

Is it OK putting 1 inch of EPS under vinyl siding with no wall insulation good?

...drywall in good shape. would the 1 inch EPS under vinyl siding be a problem with condensation on inside of walls would vapor barrie paint help over the old pain...

Posted by Roger Smith Nov. 12, 2019, 6:34 a.m. Wall assemblies - renovation 7 Responses

What is the best way to insulate my basement?

...drywall “steps”. I live in Kentucky if this helps. Thanks, Chris

Posted by Chris Rogers Oct. 27, 2019, 11:23 a.m. Foundation and basement improvements 0 Responses

How should I insulate basement Walls in climate zone 5?

...drywall and the mineral wool has no vapor barrier. Is this space between concrete and studwall a terribly idea if walls are already dry and mold free? the exter...

Posted by Chad Johnson March 25, 2019, 8:33 p.m. Basements improvements 1 Responses

How can I solve a moisture problem in attic from 1941 home?

...drywall ceiling done in the living room and in the 4x 6 unsealed area that gives access to the attic. As I read about air barriers and diffusion of water vapo...

Posted by Rachel Katz June 8, 2019, 4:06 p.m. Air and vapour barriers 0 Responses

Can you Insulate a Cinder block basement foundation with Rockwool?

...Drywall Membrain or Intello smart vapor retarder Latex paint In my climate zone I can get away with 1.25” comfortboard R5 for walls that are 50% or mo...

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

Where can I purchase non-toxic interior wall panels near Laval, Quebec?

...drywall with low-dust drywall compound and zero VOC paint , and if you want a pre-finished formaldehyde-free wall panel you could try Columbia here . What was t...

Posted by Louise Goulet Nov. 30, 2019, 1:14 p.m. Basements improvements 1 Responses

How do I create a complete air barrier using a vapour retarding primer?

...drywall and permeating into the wall assembly. If you saw the building science video about it where we used it at the Edelweiss House, we had an entirely sepa...

Posted by Mihai Wilson May 3, 2018, 10:15 p.m. Wall assemblies - renovation 1 Responses

Can you install foam boards directly against basement walls?

...drywall overtop. a 6 mil poly barrier before drywall will prevent your wall from drying, hopefully your municipal building inspector will let that pass if you'r...

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

Is There a Difference Between an Air Barrier and vapor barrier?

...drywall? Is there a poly vapour barrier? What type of insulation does it have, about how much, and is it vented - meaning is there space between the insulation ...

Posted by Sherri Mccormick Aug. 17, 2018, 3:24 p.m. Roof assemblies - renovation 3 Responses