Don’t know about that product, be we are planning on using Zip R-Sheathing which sounds by your description to be similar. I didn’t look them up though

ETA: I did find this on thermo ply which seems to indicate it is acceptable as a wind brace when installed properly. http://forums.finehomebuilding.com/breaktime/construction-techniques/thermo-ply-or-obstyvek

Thanks for sharing, that Thermo Brace looks like an interesting new product. Currently feel better with Zip R-sheathing as it's well distributed and accepted but would definitely be trying to use it instead of Thermo-Ply. I like the idea of it's easily taped foil facing a rainscreen cavity, clean foam and it doesn't rely on biodegradable engineered wood. These new sheathings are great for improving weatherization performance.

When your structural engineer gets happy with it, then...

A house on our street was recently built using this product. I'm SO GLAD we used traditional OSB with a Tyvek wrap. I could have easily punched/pushed a whole through the thermo barricade. It felt like a pure cost saving move to me and not an upgrade. The same builder built a higher end, money is no object, home across the street and didn't use it on that project (used OSB/Tyvek).

I was trying to determine what the structural component was- it sounds like it's cardboard from the description.

No thanks.

Housewrap is rarely put on without numerous mistakes. (I've certainly made them by strictly following previously advised best practices.) And that includes the taping. I'm sticking with taped t&g XPS boards as sheathing and insulation with structural bracing as required. (Different requirements in hurricane country.)

> The old standard, 3/8-inch plywood, nailed for shear, and covered with taped Tyvek is a

> perfectly good solution. For better insulation, add 1-2 inches of rigid insulation on the outside

> face. Worked well for years.

What would tyvek do under the insulation? I would just tape over polyiso

It's probably Thermo-Ply it's been around and used in hundreds of thousands of homes for the past 30 years. It's a perfectly acceptable alternative to OSB and Housewrap. It has a built in water and air barrier so all you do is tape the seams super easy to install

Oh great, waking up old thread... There used to be a benefit of thermo-ply. OSB was $16 vs $5 ply. Today, OSB is cheaper than thermo-ply.

> It has a built in water and air barrier so all you do is tape the seams ....

Never seen thermo-ply that was anything more than stapled.

I know this is an old thread, but you may want to read this:

https://www.jlconline.com/how-to/framing/testing-thermoply_o

Yes the report was conducted and released by the APA whose sole purpose is to promote the use of engineered wood products. They release this report every few years and always walk back their comments when challenged

Also read this report of tornado damage assessment in 2015. I know this is an extreme event not accounted for in the Building Codes, and perhaps the craftsmanship of construction in the general area is not on par with the rest of the country, but laminated-fiber sheathing did not fare well in new construction homes, even the ones with the lower wind speeds.

https://royomartin.com/wp-content/uploads/2017/06/APA-Texas-Tornado-Damage-Assessment-Report.pdf

In addition, APA gives further prescriptive recommendations. Above and beyond what the Code requires. Obviously, builders doing tract homes will not do this, but maybe some Owners may consider this in Tornado Alley.

Any new news on this type of building material?

I just like to know where I can buy it plywood's now going for close to $100 a sheet is zip $90 a sheet it's crazy I'm looking at siding my garage with rough sawn one by material

We are seeing a push back to diagonal in-wall bracing, plywood corners, and foam sheathing (R-Board or similar) throughout the rest of the wall. Tyvek on top.

A ton of homes were built this way the last time OSB went crazy.

Should be noted: We are on allocation for Tyvek right now. I'm good with existing inventory, but if I wasn't, I'd be in a world of hurt trying to get some.

"I just like to know where I can buy it plywood's now going for close to $100 a sheet is zip $90 a sheet it's crazy I'm looking at siding my garage with rough sawn one by material"

Code will require sheathing in addition to the siding. I would purchase the plywood for where ever you can. Pricing is crazy and there really is nowhere to buy it any cheaper.

And now it's C$40 a sheet retail!

Thinking about ZIP R instead of ply and taped XPS. Fewer steps and a lot easier sealing.