Spray foaming shop?

[dja950]

My plan has always been to do 2x4 girt with 8ft steel around inside question is at what point based on insulation strategy. The idea of filling that cavity would be effective and reasonable I do believe. The concern of moisture under there could be an issue. Rolling cut-to-fit vinyl back fg batt from top down to 8 ft may look the best at that point.

Local contractor quoted $2 sq ft at 2 inch to do spray foam. Easily be 15k+

That's 1.00 dollar a board foot on barn is high but I guess I tend to bid low because I'm
Not out here to rip people off, I'm out here to make a decent living.... Problem with Sprayfoam is lack of competition for the customer. Pole barns have little prep and little clean up and easy wide open spraying between posts. You can use a large mix chamber put out a lot of material quick. I guess he probably didn't like the 18ft ceilings, that's not a problem for me since I have a scissor lift at my disposal. But in a free market system supply and demand rules all. Sorry I would of hoped it would of been cheaper for you. I would of recommended an inch personally anyway since it is just a pole barn with free heat. R7 of foam will amaze you at how well it works with the air sealing your getting and just enough of a thermal break.

 

[dja950]

That's 1.00 dollar a board foot on barn is high but I guess I tend to bid low because I'm
Not out here to rip people off, I'm out here to make a decent living.... Problem with Sprayfoam is lack of competition for the customer. Pole barns have little prep and little clean up and easy wide open spraying between posts. You can use a large mix chamber put out a lot of material quick. I guess he probably didn't like the 18ft ceilings, that's not a problem for me since I have a scissor lift at my disposal. But in a free market system supply and demand rules all. Sorry I would of hoped it would of been cheaper for you. I would of recommended an inch personally anyway since it is just a pole barn with free heat. R7 of foam will amaze you at how well it works with the air sealing your getting and just enough of a thermal break.

 

[jebatty]

No challenge from me on foam being a great insulator. My 32 x 48 x 16h pole barn shop has 6" fiberglass batts in the walls, about 18" of blown in fiberglass in the ceiling, 2" foam board under the entire slab, and 2" foam down 4' around the perimeter. Also one 12 x 12 overhead door, two entry doors, and two slider windows. Heat loss with temps in the range of +25 to +35F outside is about 6,000 Btuh, and in the -30F to 0F range about 15-18,000 Btuh. In-floor pex set at constant 61F. I'm pretty sure foam in the walls would result in lower heat loss. OTOH the heat is from my Tarm gasification boiler with 1000 gal storage, all in the shop, and the heat loss I experience only results in use of about 4 cords/year of pine fire wood for the Tarm. The fiberglass was quite inexpensive. The firewood is from our land.

 

[Retired Guy]

There is always this:
(broken link removed to http://www.cellulose.org/HomeOwners/SprayedCelluloseInsulation.php)

 

[Buzz Saw]

There is always this:
(broken link removed to http://www.cellulose.org/HomeOwners/SprayedCelluloseInsulation.php)

That's the stuff I was talking about. One word of caution though, it doesn't seal as well as you would think. My house was still drafty around electrical boxes and the sill plate.

 

[Seasoned Oak]

That's the stuff I was talking about. One word of caution though, it doesn't seal as well as you would think. My house was still drafty around electrical boxes and the sill plate.

Then its not installed tight enough,about as bad as fibreglass. Blown in dry at 5PSI you will NOT get drafts around your outlets. A sillplate draft could just as easily be coming from UNDER the sill plate. No cavity insulation will stop that as its below the cavity and above the foundation wall,you either need to spray foam for that or caulk.

 

[Buzz Saw]

Just got my first estimate for my 40x60x14' pole barn.
Closed cell 2" $6,500.
Open cell 4" $5,000

Contractor said both come in at R-14ish.

Also would do the ceiling in Open cell 6" $4500.

How do those prices compare to other estimates? This is my first response of 6 contractors I've contacted.

 

[Highbeam]

All that for r14!

 

[Buzz Saw]

2nd quote. This is a quote for approximately 2,407 square feet 4" open cell spray foam ~ $2,700. Numbers are going the right way!

.

 

[dja950]

2nd quote. This is a quote for approximately 2,407 square feet 4" open cell spray foam ~ $2,700. Numbers are going the right way!

.

What size door openings do u have

 

[dja950]

What size door openings do

2nd quote. This is a quote for approximately 2,407 square feet 4" open cell spray foam ~ $2,700. Numbers are going the right way!

.

price i would quote for closed cell for 40x60x14 total meaning I'm not subtracting door openings at 2 inches would be just under 5k. I'd need to subtract over head doors.. Assuming their 10x10 and there's two I'd say 4600...That's r14. That 2nd wuote u told me seems off. That's .28 cents a board foot which is less than what the material cost. It's about .37 just for the open cell material... I'd Double check that quote and if u hired make sure he layed down a true four inches. Poke it with a nail in a bunch of spots to measure depth. A lot of guys quote low then don't spray the depth they say... Open cell is usually only 10 percent cheaper for equal r value and the benefits of closed in my opinion make up for that minimal cost difference

 

[Buzz Saw]

What size door openings do u have

12 x14, 9x10, 9x10, 36" entry door, and 4 3x4 windows

 

[dja950]

12 x14, 9x10, 9x10, 36" entry door, and 4 3x4 windows

price i would quote for closed cell for 40x60x14 total meaning I'm not subtracting door openings at 2 inches would be just under 5k. I'd need to subtract over head doors.. Assuming their 10x10 and there's two I'd say 4600...That's r14. That 2nd wuote u told me seems off. That's .28 cents a board foot which is less than what the material cost. It's about .37 just for the open cell material... I'd Double check that quote and if u hired make sure he layed down a true four inches. Poke it with a nail in a bunch of spots to measure depth. A lot of guys quote low then don't spray the depth they say... Open cell is usually only 10 percent cheaper for equal r value and the benefits of closed in my opinion make up for that minimal cost difference


I posted that earlier but I suck at made it show up in a quote u had to click to expand . I'll revise it here with the know openings. 414 sq ft of openings.. U have a perimeter of 200ft at 14 ft ceilings. That's 2800 sq ft. 2800-414 is 2386 sq ft of area to be sprayed. Multiply that by 2 for 2 inches think. 4772 board ft. 4772x $0.9 gives me a total estimate of 4300. In my area that'd be my quote 4300 bucks for the walls at r14

 

[Ashful]

I did closed-cell spray foam in my barn. Didn't think it was too expensive, when weighing the other options, but my application was unique. I can say I'm amazed with the results. It is un-paralleled for air sealing, and the installer gave me at least R7 - R15 beyond what I paid for. It also really does stiffen up the whole building, as light as the stuff is, due to the enormous amount of surface contact.