Air barrier / Discussions

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

...air barrier and not the vapor barrier that is compromised, though it may well be the same product so that is kind of splitting hairs. What is almost certainly...

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

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

...airtight barrier. Thanks, Scott The Zip Sheathing System is an air barrier sheathing when the joints are taped as specified by the manufacturer. There should ...

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

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

...air barrier that will still allow moisture to dry on the inside as to not have 2 vapour barriers, but stop any air and thus condensation. There would be no prob...

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

Does using T & G wood plank instead of drywall affect where we put the vapor & air barrier?

...air barrier . I won't go to far off on a tangent but please see this page about WRBs (weather resisistent barriers) as air barriers , because you could go with ...

Posted by Sue Colbourne Nov. 9, 2019, 6:16 p.m. Walls and ceilings - interior surfaces 3 Responses

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

...air barrier , we had our poly barrier go through the wall assembly and taped it to the exterior air barrier membrane. That would be a solution for new builds,...

Posted by Anwas Qwelten June 8, 2019, 3:56 p.m. Air and vapour barriers 2 Responses

What is the best to insulate metal structures for all seasons?

...air barrier, preventing air flow, but allowing moisture to dry. I understand that any number of air barrier is acceptable, but would inner, outer, or both be pr...

Posted by Morgan Aldridge Jan. 19, 2019, 1:53 a.m. Wall assemblies - new construction 1 Responses

How can I solve a moisture problem in attic from 1941 home?

...air barrier vs vapor barrier concepts. My house is above a dirt crawl space. And we have a very high water table at 18 inches!!! It is definately a part of my s...

Posted by Rachel Katz June 8, 2019, 4:06 p.m. Air and vapour barriers 0 Responses

How do you build a cathedral ceiling?

...air and vapour barrier first, then the rest of the cavity will be filled with dense pack cellulose insulation, with an intello vapour barrier holding cellulose ...

Posted by Raoul Lions Oct. 19, 2019, 8:07 a.m. Roof assemblies - new construction 1 Responses

Which exterior insulation is best to create at thermal break in an bungalow in Alberta?

...air barrier on our 1970s raised bungalow. We have a fully insulated (with spray foam) basement up to the rim joists. This space is now wonderful to live in. ...

Posted by Rebekah Barnes Jan. 17, 2020, 10:07 p.m. Wall assemblies - renovation 0 Responses

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

...air barrier continuity can be maintained but when the stove is not in use it would represent a significant heat loss. We preach a lot about airtightness , air b...

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

How do you insulate a 3 season cottage?

...air seal. I am concerned about the dew point and looking for advice on vapor barrier material and location.

Posted by MARK E BROWN LLC Nov. 7, 2019, 4:57 p.m. Wall assemblies - renovation 0 Responses

What is the best way to deal with a drop ceiling in a high humidity room?

...air barrier and possibly paint it to also be a vapor barrier. Then use unfaced mineral wool or fiberglass batts. But the tongue and groove boards would be naile...

Posted by steve Roberts Dec. 24, 2019, 8:01 p.m. Walls and ceilings - interior surfaces 1 Responses

How you vent a metal roof?

...air barrier or vapor barrier. What is recommended at this stage of the install of the roofing assemby? Air or Vapor barrier? install two layers of 1 -1/2 ...

Posted by Kim jarrett July 12, 2019, 12:15 p.m. Roof coverings 3 Responses

How do you seal windows from the exterior for water and air but not create a vapor seal?

...air can escape on one side of the wall then it won’t enter on the other side, so one air barrier is enough. We covered the exterior gap with wood, and caulked a...

Posted by Piyush Prince Nov. 7, 2018, 12:10 a.m. Windows and doors 1 Responses

How do you do a Vapour Barrier in a Dense Pack Cellulose Wall?

...air conditioning. Are you absolutely sure that no vapour barrier is okay? How do I convince the building inspectors? I can see how it doesn’t exactly look like ...

Posted by Ian MacKay July 26, 2018, 2:48 p.m. Wall assemblies - renovation 3 Responses

How should I insulate basement Walls in climate zone 5?

...barrier to the concrete or between the studs and drywall and the mineral wool has no vapor barrier. Is this space between concrete and studwall a terribly idea ...

Posted by Chad Johnson March 25, 2019, 8:33 p.m. Basements improvements 1 Responses

How do I insulate my half below grade basement?

...barrier playing out – that would be a vapor barrier on both sides of the stud wall, no? Dry inside does not mean for sure the concrete is dry, in fact if it h...

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