Condensation / Discussions

How do you improve an old block foundation with no insulation or exterior moisture barrier?

...condensation inside poly at joists. Moved wall shelving from east wall and found very large puddling, some apparently had been there prior to this latest additi...

Posted by Wilhelmina Lange March 11, 2021, 4:19 p.m. Foundation and basement improvements 2 Responses

How do you insulate a crawlspace?

...condensation and mold forming on the insulation despite the crawlspace being ventilated with hatch doors. What have I missed? We have a water heater but no furn...

Posted by Drew Weistend Nov. 14, 2017, 9:22 a.m. Crawl spaces 1 Responses

How do you fix a moisture problem in a finished basement?

...condensation. We have been running two demudifers in the room for some time and have not noticed any more moisture. The concrete is still exposed. No water has ...

Posted by Margo MACFARLANE Oct. 28, 2019, 10:24 a.m. Foundation and basement improvements 1 Responses

Any suggestions for improving insulation of a unique concrete building?

...condensation moisture problems when we start heating again. Any advice (short of destruction!) would be appreciated. Insulating old buildings made of concrete a...

Posted by Andrew Hurst Feb. 25, 2021, 4:54 p.m. Wall assemblies - renovation 1 Responses

Can I put a breathable peel and stick weather (air) barrier on the inside walls and ceiling?

...condensation. There would be no problem adding a peel-and-stick membrane that covers interior spray foam , and it would definitely give you an excellent air sea...

Posted by Anomika Singhn Oct. 1, 2018, 9:56 p.m. Air and vapour barriers 1 Responses

Do you need ventilation in a cold storage pantry in a high performance house?

...condensation will not be an issue and that we don't need any ventilation. Presumably airflow is still important for food preservation? Alternatively, our utilit...

Posted by Brad Sullivan April 12, 2021, 1:13 a.m. Ventilation 1 Responses

Can you Insulate a cinder block basement foundation with Rockwool?

...condensation on cold foundation wall in the winter during heating season and want to allow wall to dry in the summer . I am also a bit confused about smart re...

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

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

...condensation and moisture in walls so I am fairly aware of the issues but still not confident in what is the best approach for exterior insulation on the walls ...

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

What causes moisture on a ceiling in winter?

...Condensation forms when humid air meets a cold surface, so if there is condensation on a ceiling then there be either thermal bridging - a lack of insulation . ...

Posted by Cheri Banet Jan. 23, 2020, 10:22 p.m. Wall assemblies - renovation 1 Responses

Do frost lines where studs are on a wall show a failure of spray foam insulation?

I have a customer with frost problems whose home shows every stud from the outside on a winter day. Would you say their spray foam insulation has failed? It's ...

Posted by Gerald Crozier July 22, 2019, 10:24 p.m. Insulation and soundproofing 1 Responses

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

...condensation in the Rockwool in a house like mine? I found online pricing at Universe Corporation for the Delta Vent SA wrap, at $569 per 561 sq. ft rolls. Is...

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

How to insulate an apartment you don't own?

I'm a tenant, not a homeowner, so I can't tear down drywall and reinsulate but winter is coming and drafts are already getting in. Is there anything I can do t...

Posted by Teresa Cunningham Oct. 21, 2019, 3 p.m. Wall assemblies - renovation 1 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 insulate a cottage crawlspace? It's in the Haliburton Highlands

...condensation forming. Is your dehumidifier a fairly modern one that shows a reading of the current levels of relative humidity? Its’ best to keep them below 5...

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

Should I remove the plastic sheet in my cellar?

...condensation forming and therefore no mould. We are indeed planning to get one, or maybe two dehumidifiers, as the cellar is being split into separate areas.

Posted by Justin D'Arcy Dec. 4, 2020, 12:13 p.m. Basements improvements 2 Responses

How do you insulate concrete basement walls and avoid mould?

...condensation to form on the wood. You can learn more here about how that happens and how to avoid it – How to build and renovate basements properly so they do...

Posted by William Hunter Feb. 22, 2021, 11:40 a.m. Basements improvements 2 Responses

Should our HRV keep our humidity lower than 40%, even in the cold months?

...condensation on windows, is that there can be a number of causes. 40% RH isn’t unusual, and at -30C its not a surprise you’re seeing condensation form. Your HRV...

Posted by Kim Clement Feb. 8, 2021, 5:43 p.m. Ventilation 5 Responses

Should I put foam boards right against my basement wall or leave an air gap?

...condensation that might form between the foamboard and block wall? Won't it eventually just drip down and cause issues with flooring?

Posted by Elijah Hargett Jan. 9, 2021, 5:31 p.m. Foundation and basement improvements 4 Responses