Basement humidity / Discussions

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

...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/dryer are down there - the dryer vent...

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

How do you fix high humidity levels in a basement?

...basement to reduce humidity and coldness in my home. Frankly, I am not sure whom to trust anymore, therefore, your guidance would be greatly appreciated. JR T...

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

How do you solve high humidity issues in a home?

...basement/main level and a 2nd AC/Furnance for the upstairs (the upstairs was previously attic space). In the summer the humidity is frequently in the 70's (yuck...

Posted by Megan McIntosh Jan. 6, 2021, 2:18 p.m. Ventilation 0 Responses

Why is there condensation in between 1.5" polyiso board and roxul insulation?

...humidity in my basement is 45%.

Posted by Tyler Norrie Feb. 9, 2021, 2:32 p.m. Basements improvements 0 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

Can you provide Crawlspace Insulation Design Assistance?

...basement adjacent to the crawlspace contains our oil-fired heating system; there is a small opening allowing access to the crawlspace from the "full" basement (...

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

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

...Basement walls parged and painted with mold resistant paint; floor painted. Auto dehumidifier always on 24/7 year after year; fan oscillating at rear of basemen...

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

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

...humidity, so in your case it's not helping with the humidity, so as long as the air isn't seeming stale I'd cut it back a bit, maybe to whatever you would norma...

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

What's the best detector & alarm for a back flow valve that has been installed by the utility?

...basement or are finishing a basement to prevent flooding .

Posted by Tom Poe March 27, 2020, 6:38 p.m. Basements improvements 1 Responses

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

...Basements Moldy? Preventing moisture when you insulate your basement Building better basements: how to insulate your basement properly New blowing agents ...

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

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

Concrete block basement wall. Moisture issue in spring ( and I suspect fall). We get a lot of people asking about the best way to insulate a cinder block (CMU)...

Posted by Ken Gee July 31, 2019, 3:25 p.m. Basements improvements 4 Responses

Can basement walls to dry to the inside with foam board?

...basement foundation walls. From all of my reading it says that your basement foundation walls can only dry to the inside. If I put foamboard on the concrete and...

Posted by Tim Hanrahan Aug. 20, 2020, 12:34 a.m. Basements improvements 6 Responses

Should I get an HRV or an ERV?

...humidity is needed in winter and too much humidity in summer. Do I need a HRV or ERV unit...given the fact that I may not have an airtight home? If yes....whi...

Posted by RUPINDER ARORA March 12, 2021, 10:23 a.m. HRV and ERV 1 Responses

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

...basement, underneath our front porch. The cold room is inside the foundation, with rigid foam insulation external to the foundation and vapour barrier. It is in...

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

Can you install foam boards directly against basement walls?

...Basements Moldy? How to Fix & Prevent Mold in Homes Preventing Mold when you Insulate your Basement Building Better Basements: How to Insulate your ...

Posted by Ted Gorab Oct. 3, 2019, 6:09 p.m. Basements improvements 15 Responses

The thickness of vapor retarding latex paint - Is measurement wet or dry?

...basement, there is a musty / mildew smell. I've foamed and put 6 mil poly in the open crawlspace connected to the basement and painted the bare concrete walls w...

Posted by Kim Boas July 24, 2020, 10:36 a.m. Basements improvements 3 Responses

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

My husband is finishing our basement and installed 1 inch foam insulation to the exterior wall before framing and then installing fiberglass insulation. When h...

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

Will spray foam on basement walls prevent condensation?

...basement walls does nothing good, but it does a lot of harm. You can read more here – Why are Basements Moldy? How to Fix & Prevent Mold in Homes The short ...

Posted by Michael Scott April 12, 2021, 9:17 p.m. Basements improvements 3 Responses