Sheathing / Discussions

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

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

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

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

Standard exterior plywood sheathing (on top of ext stud wall, underneath finish ext siding) has formaldyde, glues all of which are toxic. What can I use that w...

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

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

...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 tha...

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

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

...sheathing it, and double strapping it for a rear-vented vertical board and batten exterior. My research into potential sheathing has turned up a couple innova...

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

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

...sheathing / weather barrier product, but you wouldn’t put that over existing plywood. Are you still in the design phase or have you started building already? ...

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

Is it a good or bad idea to spray foam directly on the interior of shiplap siding?

...sheathing - just the finish siding. When you are insulating the exterior walls of a home to improve energy efficiency, you have to make sure walls can dry. Appl...

Posted by MITCHELL KOCH Aug. 21, 2020, 3:49 p.m. Exterior cladding 1 Responses

Followup to the question How do you install Larsen Trusses on a home in Minneapolis?

...sheathing. Do you mean to strip off the sheathing boards? If so, is it instead possible to nail the plywood over the existing sheathing? At that point you could...

Posted by Ken Traefald Feb. 27, 2020, 1:49 p.m. Wall assemblies - renovation 1 Responses

What is the best exterior Wall and Roof Rigid Insulation for a barn renovation?

Building a 24 X 50 Post and Beam barn. Thinking of applying 2 layers of 4 " (8" total) of rigid insulaton, offset seams on top of 1 X 8 sheathing. Seams of top...

Posted by Ron Busch June 27, 2020, 3:50 p.m. Wall assemblies - renovation 1 Responses

Can you spray foam a house from the outside?

...sheathing and doing spray foam from the outside. It seems we could also drill holes and blow spray foam in without removing the sheathing. Now that the blowing ...

Posted by Joan Lawrence July 11, 2019, 7:17 p.m. Wall assemblies - renovation 3 Responses

How can I prevent animals from getting behind the siding on my house?

...sheathing and siding, but I want that added to help with moisture control. What is the best way to prevent rodents from getting into that space and using it as ...

Posted by Connie Curtin Feb. 22, 2020, 1:52 p.m. Pest control 1 Responses

Can I add Larsen Trusses and cellulose to 1920s House in Minneapolis?

...sheathing. Do you mean to strip off the 1x8's sheathing boards? If so, is it instead possible to to nail the plywood over the existing sheathing? At that point ...

Posted by Ken Traefald Feb. 17, 2020, 2:30 p.m. Wall assemblies - renovation 3 Responses

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

...sheathing and Tyvek - which will eventually have cedar shingles). What's the best thing to use for air and vapour barriers and where should we put them in the w...

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

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

...sheathing with paper wrap, followed by shingles, then 1/2 celotex foam board and vinyl siding installed in the 1980's. No rot or leakage is visible from the ins...

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

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

...sheathing. Inside I was thinking of 2" of spray foam or 2 layers of 4" foam board not sure which kind would be best ......or spray foam and fill the rest with r...

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

Can I spray foam insulate from the outside?

...sheathing, so you would need to re-install sheathing or at least wind bracing if we are understanding you correctly. To re-install siding afterwards you would b...

Posted by Kurt Klischuk June 6, 2019, 8:56 a.m. Wall assemblies - renovation 1 Responses

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

...Sheathing System is an air barrier sheathing when the joints are taped as specified by the manufacturer. There should not be any notable air leakage from additi...

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