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"Mould"

Mould / Discussions

Can you use a vapour retarder paint on the ceiling instead of using a poly vapour barrier?

I saw in your wall video that you advise to use a vapour retarder paint along with an outside air barrier.  Can you do this for the ceiling as well, thereby tak...

Posted by Anwas Qwelten June 8, 2019 Air and vapour barriers 2 responses

Does hydronic radiant cooling work?

Has hydronic radiant cooling advanced enough to be a viable, cost effective option for an average 2300 sq ft residential house? Hydronic radiant cooling can be ...

Posted by dean c April 30, 2019 Delivery: radiant, forced-air and decentralized 1 response

How should I insulate basement Walls in climate zone 5?

I live in climate zone 5 in USA and plan to frame basement walls roughly 3” away from concrete and then place mineral wool between the studs.  I do not plan to ...

Posted by Chad Johnson March 25, 2019 Basements improvements 1 response

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

It's a fairly new house (about a year old).  The concrete basement foundation walls are framed (wood), insulated, sealed with a plastic vapor barrier, but not d...

Posted by David Mitchell Aug. 14, 2018 Basements improvements 62 responses

Why is there mold on particle board outside vapor barrier on new addition?

...mould on the exterior particple board. The are no leaks in the roof, or water running down the exterior walls. We wonder whether the mould is caused by condensa...

Posted by Christine ML June 7, 2020 Wall assemblies - renovation 1 response

How do you build a mold-free basement in a new construction house?

I have a new construction project where one floor is subgrade. It has a cement wall on three sides that the contractor insured me was prepared to be mold resist...

Posted by Charmaine Herzig Feb. 10, 2020 Basements improvements 3 responses

What causes moisture on a ceiling in winter?

I bought  a duplex that was built in 1978 in Indiana.  It gets moisture on ceiling so bad during winter when temps drop below 20 degrees that it will run down t...

Posted by Cheri Banet Jan. 23, 2020 Wall assemblies - renovation 1 response

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

I have a 120 yr old home with a dirt crawl space that is completely dry, no Mold in the entire home, has new windows and new insulation in the attic. I have sta...

Posted by Aj Jan. 21, 2020 Crawl spaces 1 response

Is Condensation on Windows a bad sign?

Since the recent cold snap our double glazed windows are running with water, every morning it's all over the window sills, running down the wall - in the bathro...

Posted by Greg Olmstead Dec. 12, 2019 Walls and Roofs 1 response

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 w...

Posted by Brian Cole Nov. 22, 2019 Basements improvements 1 response

Is polyiso board or styrofoam best for insulating when finishing a basement in CO?

We have a concrete basement in decent condition that's about 20 years old in Boulder CO and having had mitigation installed for high radon levels we now want to...

Posted by Evan B. Nov. 21, 2019 Basements improvements 1 response

How do you insulate concrete basement walls and avoid mould?

...mould behind it near the bottom. I had the foil side toward the interior and a plastic layer side next to the wall. I was hoping to nail the Rock Wool Comfort 8...

Posted by William Hunter Feb. 22, 2021 Basements improvements 2 responses

How do you insulate a crawlspace?

I live in Northern Ontario in a house converted from a cottage, it has a 20 'X 20' crawlspace with floor joists at about 24" on center. I put 6 mm polythene on ...

Posted by Drew Weistend Nov. 14, 2017 Crawl spaces 1 response

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

I have a new house (self-built) on a concrete slab insulated with R22 rockwool and R3 panel insulation. The windows are double glazed wood and aluminum. I do no...

Posted by Kevin Newman April 19, 2017 Windows and doors 1 response

Why is a my basement smelly and humid and how do i fix it?

I live in Sudbury Canada in a 1959 bungalow and the basement is always humid and the dehumidifier runs constantly. It also costs a fortune to heat. I was advise...

Posted by Jeff O. Feb. 8, 2017 Foundation and basement improvements 3 responses

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