Home 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

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

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

...humidity is often quite high due to being near the coast? Thanks for your help - Ecohome is a great source of tips and info for older home maintenance! The ch...

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

What causes moisture on a ceiling in winter?

...home may have high relative humidity. This page about winter preparations covers the topic of condensation forming on walls in winter, and other humidity-relate...

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

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

...home. Thanks for your reply. The vapor barrier is overlapped, not tapped. I had high humidity which was causing mold growth. With the dehumidifier it varies ...

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

Can you provide Crawlspace Insulation Design Assistance?

Be warned; this is a long post! Apologies in advance. I live in the colder climate of western Massachusetts in an 1830s vintage home. We have a 4'6" crawlspa...

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

...homeowners - so air isn't moving properly in home. The electric isn't grounded (tech North America's electrical grounding isn't grounded properly anyway (need...

Posted by Niki Harrison Sept. 6, 2019, 4:32 p.m. HRV and ERV 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 insulate a home from the outside?

We live in an old 2x4 wall home that I’m told by the previous owners originally had no insulation, then it had loose fill cellulose insulation added decades ag...

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

Can you install foam boards directly against basement walls?

...Homes Preventing Mold when you Insulate your Basement Building Better Basements: Bow to Insulate your Basement Properly Hi Mike, thank you for...

Posted by Ted Gorab Oct. 3, 2019, 6:09 p.m. Basements improvements 4 Responses

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

...humidity levels and try to keep it below 50 RH. Here are some posts from our Green Building Guide Pages that may help Why are Basements Moldy? Preventing ...

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

My basement is smelly and humid, what can I do about that?

...home heating costs would definitely be helped solved by insulating your basement . According to the Canada Mortgage and Housing Corporation (CMHC), this part of...

Posted by Jeff O. Feb. 8, 2017, 10:22 a.m. Foundation and basement improvements 2 Responses

How can I get rid of moisture between the vapor barrier and the insulation in a basement?

...home? All are factors to consider for health and home durability. Can you help me? We have a similar problem and i have called many many people and cant find an...

Posted by David Mitchell Aug. 14, 2018, 6:32 p.m. Basements improvements 2 Responses

How do I insulate my half below grade basement?

...home, I'm finding it a learning curve in building science! The building is over 100 years old with a half below grade (fully cured!) concrete basement. No ext...

Posted by tom mckeand Oct. 14, 2019, 11:01 p.m. Basements improvements 1 Responses

What is the optimal setup for mechanical systems for slab on grade?

I'm putting together a design for a medium-sized, super well-insulated slab on grade home. I definitely want a hydronic in floor heat system, along with a heat...

Posted by Dave Nuttall July 6, 2019, 9:42 a.m. Mechanical systems 1 Responses

Why do you say building on a slab is more ecological than starting with a basement?

I watched a presentation by Emmanuel Cosgrove of Ecohome who said that a house built on an insulated slab floor was much more ecological and more affordable th...

Posted by Geri P Dec. 11, 2017, 11:45 a.m. Foundations and Basements 1 Responses

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

...home has a higher relative humidity (RH). To understand all about condensation on windows, and how to prevent & cure it - see here . But to answer the questio...

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