Cost of closed-cell foam spray-on?
Nuke
| Posted in Energy, Heating & Insulation on
I am curious what others may have been quoted and or have been paying for spray-on closed cell foam insulation. I guess we could use the cost per board-foot approach. And remember, 12-BdFt = 1CuFt.
Actually, I am assuming that this is priced this way. Maybe its like hydroseeding and comes with an initial flat or fixed cost, and then an additional cost beyond that.
Edited 8/22/2007 5:52 am ET by Nuke
Replies
I've noticed that you can buy large-ish consumer sized tanks of the closed cell sprau-on foam insulation that works out to ~$1/BdFt. I thought about using this in my attic (displace loose-fill fiberglass, spray 1" to seal joist cavities, etc., and put loose fill fiberglass back).
Thoughts? They sell it in both normal and slow-rising varieties.
Whenever the DIY kits have come up the cost is reasonable for doing very small specialized spaces.Once you are doing the space of an attic then commercial is much cheaper.And 2" across the attic floor would be a waste of money.It would give some relief for a period of time. But with all of the loose fill unit it the first time the air filter was changed you would end up with a dozen or 2 breaks in it and will no longer seal the surface.If I would going to do this I would get the bottom of the roof foamed and make it a conditioned attic.That drastically reduces the problems of leaky and poor insulated ducts and equipment..
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A-holes. Hey every group has to have one. And I have been elected to be the one. I should make that my tagline.
Conditioning the attic space is an interesting concept, but I can only wonder what the costs involved would be and to condition it to what extent. As I said, the costs for a commercial outfit locally is expensive, and I would imagine that simply sealing the attic volume as a condition-space envelope requires heat from below to be removed.
So, let's say a 2-ton unit to cool a sealed attic environment. That's $4K. To seal the attic with foam would be to cover 1700-1800 SqFt of exposed rafters. They are 2x8 so putting, say, 6" of foam would require +10K BdFt. Even at $1/BdFt you are talking about $14K.
How about I just remove the roof and let the hot air out? :)
I'm in accord with Bill, do your roof and get your problematic HVAC inside your conditioned envelope...open cell is also an option... and I've never heard of foam being priced by the board '... get a job quote... and get your crawl conditioned at the same time. Someone's got it in for me, they're planting stories in the press
Whoever it is I wish they'd cut it out but when they will I can only guess.
They say I shot a man named Gray and took his wife to Italy,
She inherited a million bucks and when she died it came to me.
I can't help it if I'm lucky.
and I've never heard of foam being priced by the board
Last job I had done was Corbond. The installer had a meter at the truck and was thus able to give a very accurate volumetric measure of the product used. The installed price was very close to the volumetric calculation I had made per the architectural drawings.
We paid about $0.85 per board foot (about a year ago).
Wouldn't it be cheaper to just relocate the washer-dryer to the basement and then relocate the HVAC to its closet? Or, are you suspecting the attic temps to be basically robbing to barren the condition air in the duct work?
I'm having CC(Dow) installed in a an attic as we speak. 1/2 yesterday....finish up today. They're charging $1.75 sq/ft average depth 2" --min. 1.5".
The prep was minimal..2 guys less then 2 hrs.
Up north 2" is probably below min. standards, but is optimum for my area.
I priced some internet products before (tiger foam) and found them a lot higher then any installed price I could get. Not sure of the shelf life of that product.... is it like a can of greatstuff? Break the seal and use it that day or trash it?
Nuke, I have a buddy who works for a insulation company (Key Insulation). They may go to GA. Give him a call Pat Franklin 856-534-7774. He'll give you all the info you need. Tell him Lou sent you
-Lou
I'm looking into having 1" of closed cell sprayed in my attic rafters and the quote I'm getting is $1 per square ft. of coverage.
Doug
I had the underside of the roof of my house sprayed with closed cell foam. The cost was about just about $1/bd ft. That was just about the same as me buying a bunch of DIY kits so I didn't think twice about paying to have it installed. Once I saw how hard it was to remove the overspray, I'm really glad I did.
Sometimes I wonder what the pricing differences would be to remove my roof completely and replace it with a 11.75" thick SIP panel roof and conventional tar shingles. Even at R-3.3/inch I'd be looking at 10" of it. Actually, I am making assumptions again on the open/closed cell type used in SIP panels. Doh!