Humidity / Discussions

How do you fix high humidity levels in a basement?

...humidity inside my home is still high 50-65% . Furthermore, a contractor recommended installing an air purifying system, adding additional insulation in the a...

Posted by JR Tadinac Aug. 21, 2019, 11:26 a.m. Healthy indoor air quality 3 Responses

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

...humidity pretty static or lower with dehumidification system) met the 3/4 inch plywood subfloor of the outdoor deck. From the inside of this portion of the indo...

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

What is the best way to reduce humidity in a basement?

We live in Bellingham WA and our basement was built in the 70's. It has high humidity (70-80%RH) although I don't see any visible damp anywhere. The washer/dry...

Posted by Robert J. Pierson Oct. 17, 2019, 10:45 p.m. Basements improvements 2 Responses

How do I get rid of moisture with cement floor crawl space that has a vapour barrier?

...humidity levels? Homes (basements, crawl spaces and the whole shh-bang) are best kept below 60% Relative Humidity to avoid mold and I’m wondering how high above...

Posted by Cindy Chatham 04 chatham Aug. 25, 2020, 4:47 p.m. Crawl spaces 1 Responses

What is the best way to insulate a crawlspace to keep humidity down and stop odors?

I have a crawlspace with 4' concrete walls and a cement floor, insulation between the floor joists and has 3 - vents to the outside. I am thinking of 1" foam b...

Posted by Dave Bell Oct. 24, 2019, 3:57 p.m. Crawl spaces 3 Responses

Can you help with passive solar greenhouse exterior wall details?

...humidity inside). Location and type of vapour barrier. 3) best rigid insulation type to create a thermal break / if that rigid insulation should be breathable...

Posted by Rick Carter Aug. 11, 2020, 8:06 a.m. Greenhouses and Sunrooms / Solariums 1 Responses

How do you stop wood stove smoke from entering a home?

...Humidity is 50 per cent or less. Don't want to give up the wood stove. Don. Topsham, ME. You do have a few points here to address, but the first thing I would...

Posted by Don Leaver March 24, 2020, 10:49 a.m. Wood stove and biomass heat 4 Responses

What is the best foam board insulation under drywall?

...humidity, cold, and snowy environment. Heating only no cooling. Currently have T1-11 siding, tar paper, R13 FB insulation, and the interior finish is 1/4 plywoo...

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

Can my shallow crawl space be converted to a slab foundation?

...humidity in the house and crawl space (despite the fact that the crawlspace is always clean and dry) for which I am trying to find a solution. And no doubt need...

Posted by Sian O'Keefe Aug. 15, 2020, 12:52 p.m. Slab on Grade 1 Responses

Is an HRV or ERV system best in a cold climate?

...humidity levels - which also change around a fair amount based on wind direction, temperature and how close we are to the lakes. So - this is where my question ...

Posted by Michael Duncan Nov. 14, 2019, 3:53 a.m. HRV and ERV 1 Responses

How do you do a vapor barrier in a dense pack cellulose wall?

...humidity in summer. Lots of heat, lots of air conditioning. Are you absolutely sure that no vapour barrier is okay? How do I convince the building inspectors? I...

Posted by Ian MacKay July 26, 2018, 2:48 p.m. Wall assemblies - renovation 4 Responses

Can you provide Crawlspace Insulation Design Assistance?

...humidity issues as well. I was thinking of new fiberglass batts in the 24" o.c. joists supported by one of the newer breathable foil membrane products stapled...

Posted by Randy Christensen Dec. 10, 2019, 12:17 p.m. Crawl spaces 1 Responses

What is the best heating and cooling system for a slab on grade home?

...humidity. Based on these factors, what type of heating and cooling system should we be looking into? I feel like if we go with a slab on grade we would almost c...

Posted by Matthew Gioia July 7, 2020, 11:03 p.m. Heating and cooling 3 Responses

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

...humidity, c) remove the styrofoam boundary from underneath, and d) spray insulation on entire perimeter of plywood skirting? Would moisture problems under cot...

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

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

...humidity. New buildings often take a bit of time to dry out, so it would not be unusual that in the first winter there would be higher levels of humidity as bui...

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

What causes moisture on a ceiling in winter?

...humidity. This page about condensation will probably help - Condensation on walls and windows - what causes it and how to fix it This page as well about win...

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

What is the best way to Insulate the crawl space of an old home?

...humidity will find its way into the main floor of your house. Do you have a hydrometer for testing the relative humidity? That would be a good thing to have. ...

Posted by Aj Jan. 21, 2020, 8:13 a.m. Crawl spaces 1 Responses

What insulation should I put on basement block walls that is resistant to mold?

...humidity? If you get bulk water then you would be wise to install a drain. If it's not a finished floor then you could smash the concrete with a sledge hammer a...

Posted by Ken Gee July 31, 2019, 3:25 p.m. Basements improvements 3 Responses