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 stop air leaks in an old 1950's house?

...air and resulting heat loss is a major problem in this design of house. Air leakage through walls and ceilings is responsible for a large percentage of the heat...

Posted by Don Fraser Sept. 3, 2021, 3:22 p.m. Air and vapour barriers 1 Responses

Should you keep duct work out of the attic?

...air barrier to reduce air leakage and energy loss As for your other question, yes, duct work should be kept within the conditioned space. Running heating vent...

Posted by Frank Liu July 23, 2020, 8:53 a.m. Ventilation 1 Responses

What is the best way to frame window openings when adding exterior insulation?

...air leakage rate to about 0.6 ACH (here is our air barrier installation video ). As for ideal window placement within a wall assembly, if you are looking for ...

Posted by Anwas Qwelten May 30, 2019, 8:16 p.m. Windows and doors 1 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 3 Responses

Does paint work instead of a poly vapour barrier?

...air barrier? More often than not over the last many decades the 6-mil poly is meant to be the air barrier as well, which is very different, read more here – T...

Posted by Bill Fletcher May 6, 2020, 1:46 p.m. Air and vapour barriers 1 Responses

How do I seal the air barrier at the top of the exterior wall?

...air barrier was installed up to the top of the exterior wall. I wonder how to prevent the air from entering between the top plate of the wall and the OSB r4? Th...

Posted by Nicolas Jolicoeur Jan. 3, 2022, 11:05 a.m. Air and vapour barriers 5 Responses

What is the best way to do Stucco/E.I.F.S exterior window wraps?

...air sealing we tried and we were really happy with how little air leakage we found when we relied not on caulking but rather on a high-performance building tape...

Posted by Pat Estes July 17, 2020, 11:50 a.m. Windows and doors 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

Where is the correct vapor barrier location in Chicago?

...air leakage’ from the equation by adding a dedicated air barrier, then you need to in effect ‘waterproof the underside of what would at this point be the subflo...

Posted by Joel Peerson Jan. 31, 2021, 7:31 p.m. Air and vapour barriers 2 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

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?

...airs. This page explains it clearly - The difference between air barriers and vapor barriers What is almost certainly happening is that warm, humid air is e...

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

Should you insulate an A-frame cottage with cathedral ceiling from the exterior or interior?

...air leakage though them, so step one is an air barrier membrane. You can see our Air Barrier DIY install video here , and with knowing your climate zone we can ...

Posted by J Genereaux Oct. 26, 2020, 10:38 a.m. Roof assemblies - renovation 1 Responses

What type of hrv system should I put in a 4 year old home?

...airtight. The less air leakage the better, and yes, you should have an HRV to remove moisture and provide fresh air. I would say you are best to start by fami...

Posted by Ellen Murray Zappone Sept. 1, 2021, 4:35 p.m. HRV and ERV 1 Responses

how do I find a window/glass vendor who really understands passive solar houses?

...air leakage and thermal bridging around windows. Here is our page about how to install windows properly .

Posted by Brigid O'Connor Oct. 23, 2021, 8:55 p.m. Passive solar home design 1 Responses