Exterior insulation / Discussions

What is the best way to insulate the exterior walls of an older home?

...insulation. Be sure to install exterior home siding so it can dry properly (read more here) , and Choosing the right exterior rigid insulation (see here) is v...

Posted by Geoff Kavanagh June 30, 2020, 4:01 p.m. Wall assemblies - renovation 1 Responses

How would I rectifiy problem of foundation wall cracks with finished basement?

...exterior rigid insulation, or, dig down a little bit, ad some insulation to the above grade portions and install a skirt insulation around the perimeter. The ...

Posted by Terry P July 22, 2020, 7:07 p.m. Basements improvements 3 Responses

Why is there mold on particle board outside vapor barrier on new addition?

...insulation, cut through the vapor barrier and found mould on the exterior particple board. The are no leaks in the roof, or water running down the exterior wall...

Posted by Christine ML June 7, 2020, 1:35 p.m. Wall assemblies - renovation 1 Responses

Why is there condensation above ground on an interior basement wall?

...insulation to the exterior wall before framing and then installing fiberglass insulation. When he began drywalling he noticed moisture behind the fiberglass on ...

Posted by Barb Daluisio Jan. 12, 2021, 1:26 p.m. Basements improvements 1 Responses

Do I need a standard 6 mil poly vapor barrier with dense cellulose exterior wall?

...insulation. I've opened the wall cavity and plan to use a dense pack cellulose to achieve R-14. The exterior wall is plank sheathing with paper wrap, followed b...

Posted by jeff Chormann May 1, 2020, 9:18 a.m. Air and vapour barriers 2 Responses

How do you insulate a cottage crawlspace? It's in the Haliburton Highlands

...insulation to reduce humidity, c) remove the styrofoam boundary from underneath, and d) spray insulation on entire perimeter of plywood skirting? Would moistu...

Posted by Beata Domanska May 25, 2020, 11:38 a.m. Crawl spaces 1 Responses

What windows should you use when trying to build a Passive House?

...insulation and a parallel sloping truss roof 15 inches deep again filled with dense pack cellulose and may also incorporate 3 inches of foam insulation first to...

Posted by Raoul Lions Jan. 25, 2019, 2:18 p.m. Windows and doors 1 Responses

Can you use Foam boards on basement walls to stop condensation?

...insulation was added on one of the walls (all others checked and fine) condensation is building up after I waited a month or so into winter and pulled the insul...

Posted by Chad Johnson Dec. 21, 2019, 7:59 p.m. Basements improvements 3 Responses

Do you need an HRV or ERV in a 68 year old home?

...exterior walls and plaster interior walls. I'm assuming the insulation is rock wool with paper. My house can get dry in the winter sometimes with humidity at 20...

Posted by Gary Szymkowski Nov. 1, 2020, 10:11 a.m. Ventilation 0 Responses

What is the best way to deal with a drop ceiling in a high humidity room?

...exterior insulation and no venting on this roof below the outdoor deck. Condensation problems developed inside the pool room where the humid pool room air (55...

Posted by steve Roberts Dec. 24, 2019, 8:01 p.m. Walls and ceilings - interior surfaces 1 Responses

How to air seal & ventilate a partial gut reno of a 1901 house?

...exterior - the air sealing we have done has been applied to the inboard side of the exterior wall studs, and we are running a secondary 2x service cavity inboar...

Posted by Zach Zill Feb. 7, 2021, 4:33 p.m. Air and vapour barriers 0 Responses

How do I stop a leak from my attic?

...exterior walls. I checked the attic and found 1) frost of the underside of the roofing plywood 2) insulation stuffed to the soffit and touching the roofing pl...

Posted by Markus Duess Feb. 11, 2019, 12:42 a.m. Roof assemblies - renovation 1 Responses

Basement reno - How do I effectively insulate my basement?

...exterior foundation walls? Also, will there be an issue with thermal bridging or vapour with having one insulation system (old) adjacent to another (new) and ...

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

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

...exterior sheathing boards are1x's. I’ve done thermal scans of the walls. There doesn’t seem to be excessive settling of the cellulose. I’ve checked the attic in...

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

Should I vent the space between a block wall and vapor barrier?

...exterior and 1 was just dividing the finished area and utilites. I found mold behind the wood paneling, sheetrock, 2x4 wood studs, and fiberglass insulation. Th...

Posted by Nick Santore Oct. 10, 2020, 2:03 a.m. Basements improvements 1 Responses

What is the best way to renovate a basement after a flood?

...exterior clay weeping tile connected to a running trap that evacuated into the sanitary line. We had 12 cm of water on the floor overnight. The basement was div...

Posted by Wren Toombs June 18, 2018, 10:52 a.m. Foundation and basement improvements 2 Responses

Where does a vapour barrier go when building a shed in southern Ontario?

...exterior sheathing, R14 roxul batts and the infamous 6 mil poly. The ceiling is R40 pink as I got a good deal, and figure if it cost the same as R24, may as wel...

Posted by Charley Nelson Nov. 5, 2020, 10:09 a.m. Wall assemblies - new construction 1 Responses

How do you fix radon and water infiltration in a dry stone foundation?

...exterior water ingress can only be managed so much by gutters/french drains, given grade against mountain. There's no appetite for the cost of a full excavation...

Posted by john flannery July 14, 2020, 4:24 p.m. Foundation and basement improvements 5 Responses