Air barrier / Discussions

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

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

...air barrier , the best way to bring that inside to create continuity with the ceiling air barrier is to put it between the two top plates. Putting it on top is ...

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

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

...airflow through the floor. A bit of insulation would be a plus. I think it should also allow moisture to pass through. I would rather put it between the floor j...

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

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

...barrier will not work in the vertical plane. Can you explain this concept? the vertical plane need another method to seal? The Aerobarrier air barrier spray you...

Posted by Santiago Pacheco Feb. 13, 2020, 11:06 a.m. Air and vapour barriers 3 Responses

Does strapping’s nailing jeopardize membrane integrity?

...air barrier because it has substrate behind it, and the membrane can seal around any screws or nails to a certain extent. See your peel and stick air barrier me...

Posted by GUY DUPONT Nov. 26, 2021, 11:12 p.m. Air and vapour barriers 3 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

Should I vent the space between a block wall and vapor barrier?

...barrier. I have no french drain or any drain sytem. I believe Im right when saying that that space between the block and barrier has to breath for the moisture ...

Posted by Nick Santore Oct. 10, 2020, 2:03 a.m. Basements improvements 1 Responses

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

...barriers - Choosing a weather barrier house wrap, which is best? This page explains air / vapor barriers - The difference between air barriers and vapor barri...

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

is a double vapor barrier on a South Florida roof bad?

...barrier' potentially trapping moisture in the roof deck causing long term issues given Naples is hot and humid. I was of impression open cell foam is an air b...

Posted by Arthur Moore April 6, 2020, 12:57 p.m. Roof assemblies - renovation 0 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

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

...air barrier installation? Installing a window properly to avoid air and water leaks is left up to the installer, there is no certification that we know of. Ther...

Posted by Pat Estes July 17, 2020, 11:50 a.m. Windows and doors 1 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

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

...barrier over the cellulose on the inside under the drywall, will I then cause vapor to be trapped between the outside vinyl /foam board and poly barrier. The fo...

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

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

...barrier and air conditioning the space. Here is another important page to read – Never Install Air-Conditioning in a Home with a Vapor Barrier You will read...

Posted by Christine ML June 7, 2020, 1:35 p.m. Wall assemblies - renovation 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