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 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 Frank Cooper Oct. 17, 2019, 10:45 p.m. Basements improvements 2 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

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

How do you do a Vapour 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 3 Responses

How do you remove water droplets from under a crawl space vapor barrier?

...humidity in your crawlspace and increasing your risk of mold forming . Here is our page all about how to insulate a crawl space – Crawlspaces are very rare as...

Posted by Paul Racioppo Feb. 7, 2020, 3:49 p.m. Crawl spaces 3 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

Can you use polyiso insulation on the exterior of a wall behind cedar siding on the west coast?

...humidity inside the wall assembly.

Posted by Iain Matheson Jan. 28, 2020, 10:38 p.m. Wall assemblies - renovation 1 Responses

What type of wood can be installed on a radiant floor?

...humidity. Some hardwood species perform reasonably well in this capacity, but we would recommend that you first consider engineered hardwood for added durabil...

Posted by Colleen Blak Dec. 11, 2017, 1:59 p.m. Flooring and stairs 1 Responses

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


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

I have chronic illness from the air quality of my home, can you help determine if I need to replace the HVAC system?

...humidity zone in Ontario... it's exactly what I wanted to hear from a professional - I shouldn't know more than the contractor coming in based on a 5 min online...

Posted by Niki Harrison Sept. 6, 2019, 4:32 p.m. HRV and ERV 2 Responses

Can you install foam boards directly against basement walls?

...humidity. Wow, that is a terrible idea. Your 'mold guy' is for sure in the business of growing it, not preventing it. Cinderblocks are porous, so they will co...

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

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

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. Ventilation 1 Responses

Is Condensation on Windows a bad sign?

...humidity in your home. They aren’t expensive (probably in the $20 range) and it will be great to have in the future to keep an eye on the humidity levels. As ...

Posted by Greg Olmstead Dec. 12, 2019, 6:21 a.m. Walls and Roofs 1 Responses

My door lock keeps freezing to the point I can’t open it, any idea why this would happen?

...humidity level in your home if it is too high, so first hit the hardware store and pick up a hygrometer to measure the indoor relative humidity, They cost abo...

Posted by AJ Nov. 13, 2016, 1:15 p.m. Walls and Roofs 1 Responses

How do you insulate a crawlspace?

...humidity. We normally recommend insulating and sealing the crawlspace walls and floor instead, and having it moderately heated to keep any pipes from freezing. ...

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