OSB sheathing / Discussions

What kind of non-toxic exterior sheathing can be used in place of plywood?

...OSB and plywood exterior sheathing no longer contain Urea Formaldehyde, so they really aren’t that toxic anymore, especially on the exterior of a home. But by a...

Posted by pier charter June 4, 2020, 1:12 p.m. Wood and organic materials 1 Responses

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

...sheathing? We prefer to use Plywood instead of OSB as sheathing, read more here . The latest Ecohome demo house is targeting LEED Platinum, and has extremely ...

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

Is the ZIP sheathing system good or bad for water control?

...OSB sheathing with a fully adhered sheathing membrane? ZIP Sheathing is a pretty hot topic with some differing opinions. The ZIP System is a structural sheathin...

Posted by Trevor Prinz Nov. 26, 2019, 4:03 p.m. Walls and Roofs 5 Responses

What is the best way to insulate a 2x8 wall?

...osb then some thermal break , breathable foil , 3/4 space then sheathing. Inside I was thinking of 2" of spray foam or 2 layers of 4" foam board not sure which ...

Posted by Michael Sweglar July 8, 2020, 10:43 a.m. Wall assemblies - new construction 3 Responses

What is the best material to use on top of plywood for water proofing?

...OSB as sheathing if you're looking for the ideal wall assembly to allow walls to dry. The Vent SA is a great product we were really happy with, though that does...

Posted by Babak K July 27, 2020, 12:22 a.m. Air and vapour barriers 3 Responses

What is the best way to insulate a home from the outside?

...sheathing. OSB is okay but Plywood handles moisture a bit better. If you are sticking with the original sheathing (or boards if that’s what it had), I’d suggest...

Posted by Sylvie Gagnon Dec. 12, 2017, 11:58 a.m. Wall assemblies - renovation 1 Responses

Combo structural sheathing, WRB and thin insulation panel in Ontario?

...OSB and insulation panels and how they could possibly pose a problem on the exterior of homes. Choosing between plywood and OSB sheathing – which is better? ...

Posted by Steve Bull Jan. 14, 2020, 6:06 p.m. Walls and Roofs 3 Responses

What is your experience and thoughts on pre-fab wall assemblies?

...OSB sheathing as well as ZIP structural sheathing ? Cheaper than two layers of sheathing would be swapping one out for an exterior peel and stick WRB membrane ....

Posted by Shaun B Nov. 12, 2019, 4:16 p.m. Wall assemblies - new construction 2 Responses

What are the options for adding Exterior Roof Insulation?

...sheathing, with likely an air space underneath the sheating at the top of the insulation. If that is the case, laying SIPs or ThermalWall panels on the sheathin...

Posted by Marlo Raynolds Aug. 29, 2020, 9:19 p.m. Roof assemblies - renovation 4 Responses

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

...OSB sheathing actually behaves like a vapor barrier , though this is not common knowledge in the building industry. Here is a page that will help you understand...

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

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

I saw in your wall video that you advise to use a vapour retarder paint along with an outside air barrier. Can you do this for the ceiling as well, thereby tak...

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