Air leakage / Discussions

Should I test my home for radon gas?

...air exchanger. I thought it best to test for radon gas after I've tightened up the major air leakage in my home. What do you think? Yes, it's always a good idea...

Posted by Mary Anne S March 5, 2019, 7:46 p.m. Radon in Homes - Mitigation 4 Responses

Do I need a standard 6 mil poly vapor barrier with dense cellulose exterior wall?

...leakage is visible from the inside. My question is if I install a poly barrier over the cellulose on the inside under the drywall, will I then cause vapor to be...

Posted by jeff Chormann May 1, 2020, 9:18 a.m. Air and vapour barriers 2 Responses

How do I create a complete air barrier using a vapour retarding primer?

...air and vapour movement comes from the fact that usually one product (6-mil polyethylene) is used as both the vapour barrier AND air barrier, but air leakage an...

Posted by Mihai Wilson May 3, 2018, 10:15 p.m. Wall assemblies - renovation 1 Responses

How do you attach exterior siding without affecting the air barrier on a passive house?

...air barrier sheathing when the joints are taped as specified by the manufacturer. There should not be any notable air leakage from additional fasteners used to ...

Posted by Scott Bowker July 16, 2018, 11:07 p.m. Wall assemblies - new construction 3 Responses

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

...air through any holes in your building envelope. That will create positive air pressure inside the house, and force air out other holes in your building envelop...

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

Is it possible to reconcile installing a wood stove in a airtight, super-insulated house?

...air-leakage as long as it’s well-installed. The biggest concern with woodstoves in airtight homes is if they don’t have a direct air feed from the outdoors to...

Posted by rick seward Dec. 23, 2018, 2:49 p.m. Wood stove and biomass heat 1 Responses

What is the best way to insulate rim joists with EPS and batts?

...air seal, you may want to actually do that first, which could be a simple matter of applying caulking or acoustic seal to the rim joists to stop air leakage whi...

Posted by Steve J July 18, 2019, 3:53 p.m. Basements improvements 1 Responses

Can you put hemp insulation in an attic?

...air barrier. If you don’t have a proper air barrier and you are removing all the insulation, then that is really the perfect opportunity to lay one down. Air ...

Posted by Pamella Weatherly-Phillips Aug. 16, 2019, 11:49 a.m. Roof assemblies - renovation 1 Responses

Do you have on a category on insulating vans?

...air leakage. There are two companies we know of that have switched to more environmentally friendly blowing agents , Elastochem and Demilec. And below is a li...

Posted by chantal fortier April 14, 2019, 2:08 p.m. Tiny house 1 Responses

How do you seal up an old fireplace chimney?

...air leakage. Insulating chimneys from the outside: Cover the entire stack of bricks with a layer of rigid insulation (rockwool or expanded polystyrene) and ...

Posted by Gord Nov. 2, 2017, 10:06 a.m. Wood stove and biomass heat 3 Responses

How do I get rid of carpenter ants?

...air leakage. Install mosquito nets at any openings like dryer vents and stove hoods. Keep the humidity level in the home low, down below 40% Relative humidi...

Posted by Shawn B Nov. 14, 2017, 10:27 a.m. Pest control 1 Responses

Is There a Difference Between an Air Barrier and vapor barrier?

...air leakage rather than stopping it, even the highest quality brand new home will still leak air, it’s a fact of life. If possible, it would be wise to have it ...

Posted by Sherri Mccormick Aug. 17, 2018, 3:24 p.m. Roof assemblies - renovation 3 Responses

Can I put a breathable peel and stick weather (air) barrier on the inside walls and ceiling?

...air seal all the joints and sistered joists with caulk or sealant because where the SPF meets the joints, the seam is thin and air goes right though the SPF and...

Posted by Anomika Singhn Oct. 1, 2018, 9:56 p.m. Air and vapour barriers 1 Responses

What are the most cost-effective green building strategies in new home construction?

...air barrier and lots of air leakage can account for 1/3 of heat loss in a home. The best type of windows (thermal conductance, transmittance, solar gain, etc....

Posted by M T Nov. 4, 2019, 11:07 a.m. Concept and design 3 Responses

Improving the efficiency of a home built in 1978 during renovations, do I need an HRV?

...air leakage in your home . If you are improving the envelope and making your home more airtight , with luck you will get to the point where you need ventilation...

Posted by joe cruikshank Feb. 8, 2020, 12:08 p.m. HRV and ERV 1 Responses

How do you know when its time to replace windows?

...air leakage at that point. Some people use spray foam for air sealing, we’re not big fans of that as we have seen some failures. Cured spray foam is not at al...

Posted by Ted Dec. 11, 2017, 12:50 p.m. Windows and doors 1 Responses

What do I in my basement where new insulation meets old?

...airs you won’t have a continuous air barrier, but unless concrete is extremely cracked then you likely wouldn’t have a lot of air leakage so I wouldn’t worry to...

Posted by Steve J July 20, 2019, 10:01 p.m. Basements improvements 2 Responses

What is the process to seal a house using Aero barrier spray?

...airtightness. So would you suggest using air barrier and tape first? Or go straight for the Aerobarrier and bypass all the hassle of membrane and tape? Or is...

Posted by Santiago Pacheco Feb. 13, 2020, 11:06 a.m. Air and vapour barriers 2 Responses