Anyone living in a barndiminium or a spray foam contractor ?

[GreensvilleJay]

That dang head looks HEAVY !!!! Sure ain't not out of any pickup truck !
Agree 'mystery covering' to keep the concrete black rubber free.
Shop I used to own only had 7 trusses for the 72' (12' on center )

 

[My Barn]

We built in 2019 ~ 2 X 6 walls with Fiberglass batt insulation and Rock wool in the attic. Which was National Code. Basement had to have Fiberglass batt insulation with no vapor barrier.
We are in the Great Lakes area. In a house with fiberglass one can always do repairs and add electrical circuits. I built a greenhouse a few years ago and used foam. Only to find out that ants and mice loved it!

Best Insulation for 2x4 and 2x6 Walls

The best insulation for exterior walls depends on the wall's thickness. Learn the best insulation to use for 2x4 and 2x6 exterior wall systems.

www.thespruce.com

 

[North Idaho Wolfman]

Rockwool ( AKA Mineral Wool (( AKA Volcanic rock and metal slag)), is really neat insulation, It does not absorb any moisture, it doesn't sluff, pack, or drop down so it doesn't leave a space at the top of the walls over time, Nice and most other bugs and pests won't mess with it.
It has a higher per inch R value than fiberglass.
It's 100% fire proof!
It's super easy to work with, No itch and it cuts with a bread knife,

I would say the only downfall is the cost, but the return over time is greater than any other.

 

[North Idaho Wolfman]

Yea I wrapped the front tires in duct tape to keep the rubber scuff marks to a minimum.
The ballast is a Old Cat Diesel head, works great for operations like this.

 

[Workerbee]

I used close cell 15 years ago. I recall asking the guy spraying how any foam, closed or open cell could be a vapor barrier. He told me its after appying the foam they paint it and the paint was the vapor barrier. I’m not sure how that could be, or if it was how a vapor barrier to the inside could be proper. Anyway, they completed the job, and I havn’t noticed any issues since. Energy efficiency seems fairly good, but we have a lot of glass, so Im sure that requires most of it.

 

[Poohbear]

If you read the manufacturers data sheets , 2in of CLOSED cell IS a vapor barrier. NO WAY Jose, ZIP, NADA that any amount of OPEN cell is a vapor barrier and have never seen a data sheet that says it is. I would ask for the open cell specs in writing and all but one guy got that deer in the headlight look . The only one that said closed cell not a vapor barrier got the job. You can spray open cell then Sheetrock and paint wall and that's a barrier but only for the interior, not on the inside of the walls

 

[Workerbee]

They spray painted the insulation before any wall covering went on…

 

[North Idaho Wolfman]

Closed cell foam is a vapor barrier, so is sheet foam with a mylar coating.
Open cell foam is not a vapor barrier, and even spraying paint over it does not make it a vapor barrier.
In fact painting it really reduces its ability to work, as you are now trapping moisture in it, reducing it insulation amount greatly.
A good vapor barrier will allow air through it and not moisture, paint does not do that.
I have products here that I use that look like paint but they are a liquid vapor barrier and they act completely different than paint, which is a sealer.