Negative / Discussions

How do you deal with a house under negative pressure?

...negative pressure. The master bedroom is under positive pressure to the point that it pushes air into plumbing holes under master bath sink. The house is 2499...

Posted by Connie Taylor April 16, 2020, 1:41 p.m. Ventilation 1 Responses

When I use my stove hood I get smoke odours in my home, is that due to negative pressure and how do I fix it?

...negative pressure: As mentioned above, make sure your furnace has an outside air intake. If the stove hood is moving 400 CFM or more, it may be necessary to hav...

Posted by Anonymous Dec. 11, 2017, 12:37 p.m. Healthy indoor air quality 1 Responses

Is it smart to lay plastic under a pier and beam cottage and should I close it in?

...negative pressure? Anytime a wooden building of any kind – a shed, bunkhouse, cottage or anything – is close to the ground, it is smart to have a moisture barri...

Posted by b port Oct. 31, 2021, 3:19 p.m. Crawl spaces 1 Responses

What is safer than OSB for someone with multiple chemical sensitivities?

...negative respiratory reactions to OSB building products, I think?? I want to build a new home. Are there safer plywood options? What is the healthiest product f...

Posted by Ian Smith April 27, 2020, 1:01 p.m. Healthy indoor air quality 1 Responses

Rain being drawn through windows on new build.

...negative pressure issue causing a vacuum type effect? Is there anything else that could assist with reducing internal pressure? If you have rain coming in bel...

Posted by Kylie Bonavia Oct. 1, 2021, 8:27 p.m. Windows and doors 1 Responses

How do you stop wind from blowing under a house on piers?

...negative pressure fan to pull moisture out. I did not install a vapor barrier. Several yeas later I noticed some mold. I used two applications of vinegar and on...

Posted by Robert Boyle Oct. 17, 2021, 12:11 a.m. Foundation and basement improvements 1 Responses

Do you have a diagram showing effect of winds on the pressure inside the house?

...negative pressure outside of your north wall, so more than just being an issue of increased air pressure inside the house, wind will create a negative pressure ...

Posted by Bryan Bargen June 8, 2018, 5:20 p.m. Air and vapour barriers 1 Responses

Can Rockwool be installed over Type II EPS?

...negative impacts of how it can stop moisture movement.

Posted by Brian Bonnell March 30, 2020, 11:04 a.m. Wall assemblies - renovation 1 Responses

What can I use as an air barrier under an old wood floor with no sub floor?

...negative effects in terms of comfort, energy efficiency, and air quality. See this page first as it will probably answer all your questions – Crawl Space Insu...

Posted by Mimi Costley Nov. 6, 2021, 11:11 a.m. Air and vapour barriers 1 Responses

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

...negative pressure when you open the stove door it is more likely you will let smoke enter. I heat with wood myself so I know the challenge of ensuring you don’t...

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

Is it worth investing in triple-pane windows?

...negative impact on air quality and is considered by the USGBC to be among the most environmentally destructive building materials available when the full life c...

Posted by K.P. July 8, 2017, 12:39 p.m. Windows and doors 1 Responses

Wood Burning Stove - Do We Need A Cold Air Vent to Safely Operate?

...negative pressure and draw flue gases back into your room - which could be dangerous. Depending on what size BTU your intended stove is rated at will determin...

Posted by Regina Vigil Feb. 15, 2021, 3:11 p.m. Wood stove and biomass heat 2 Responses

Do we have the option to build to meet the reqs. of the Living Building Challenge?

...negative impacts (just to name a few). So is it possible that one can work with EcoHome to create these Living Building homes. Currently located in the Caribbea...

Posted by Lydia Singh Jan. 8, 2020, 1:30 a.m. Green building certifications 4 Responses

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

...negative offgassing possibilities, but maybe instead of painting sealant on inside walls and using rock wool, would this be the best way to stop or slow the inf...

Posted by David Mitchell Aug. 14, 2018, 6:32 p.m. Basements improvements 42 Responses