Osb / Discussions

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

I have had some negative respiratory reactions to OSB building products, I think?? I want to build a new home. Are there safer plywood options? What is the hea...

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

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

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

...OSB base and WRB (weather resistive membrane), which is basically a mesh that is attached to an OSB sheathing panel with a paint applied. So it is an all in one...

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

Can you use boards instead of sheathing?

...OSB and Ply I'm exploring the option of using ungraded 1x6 boards on a diagonal. Could you tell me if this would meet the current National Building Code? Using ...

Posted by Stephen Montgomery May 30, 2021, 4:19 p.m. Wall assemblies - new construction 1 Responses

Can you mount heavy objects to a Passive House Larsen truss wall?

...osb). Can I mount to this without worry? Thanks Whether or not Larsen trusses are strong enough on their own to carry weight without sagging depends on how they...

Posted by Jay Stevenson July 3, 2020, 2:42 p.m. Wall assemblies - renovation 1 Responses

How do insulate a basement slab that is sloped ?

...osb/plywood achored with tapcons. The problem here is that there's a significant slope to a central drain (4" at the lowest). I will be removing that drain and ...

Posted by Louis-François Lapointe Nov. 11, 2020, 10:34 a.m. Basements improvements 1 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

Basement reno - How do I effectively insulate my basement?

...OSB +flooring of choice Header/Rim Joist: Not sure... Since this is above grade, but in the basement, how do I layer this and tie it into the wall insulation ...

Posted by Steve J Feb. 13, 2019, 10:25 p.m. Foundation and basement improvements 2 Responses

Which type of exterior insulation to use on a house?

...OSB (I'm assuming the builders saved a few dollars by using such a bad material?) There is old aluminum siding which I am planning to remove at which time I w...

Posted by Trevor Marshand May 26, 2020, 1:16 p.m. Insulation and soundproofing 1 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

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

...OSB, you will for sure have air leakage though them, so step one is an air barrier membrane. You can see our Air Barrier DIY install video here , and with knowi...

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

Should I install a poly moisture barrier before the rigid foam board against a basement wall?

...OSB with a rubber mat on the bottom? Those can be a problem particularly in older houses that don’t have a vapour barrier under the slab floor as there is no wa...

Posted by DONandCATHY Crenna Dec. 14, 2020, 2:21 p.m. Basements improvements 3 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

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?

...OSB on either side, which may not be necessary. A product that may actually fit your purpose is ThermalWall insulation panels if the circumstances are right. Th...

Posted by Marlo Raynolds Aug. 29, 2020, 9:19 p.m. Roof assemblies - renovation 4 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 type of insulation under an outdoor deck frame with 2x8s?

...OSB would do then? Any vapor before the OSB? I read the vinyl floor act as a Vapor barrier. The walls I will go 2 inch, vapor and pine. The celling is all p...

Posted by Eric Dalpe Sept. 15, 2020, 9:13 a.m. Wall assemblies - renovation 4 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