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Thread: Getting quotes on spraying shed ceiling with closed cell foam

  1. Quote Originally Posted by Martin Wasner View Post
    As far as I know, anything over an inch is a waste in a ceiling. You can't get to an effective R value with foam so you end up blowing in insulation anyways. Most of the time around here they just skin it with an inch to seal everything up, then blow the rest in on a ceiling.

    I've seen where they just do the edges and any penetrations and that gets you 80% result for a lot less money. Or so I'm told.

    Do closed cell.
    Used urethane foam almost 40 years ago on my post and beam house. Was far superior to any existing alternative then and still is today. More costly yes, but over the occupancy of the house and resale value; would do it again in a second!

  2. #17
    I'm not against foam. It's just not cost effective to bring it up to the code R value here in a ceiling, but I'd still skin the lid and blow the rest in. I live in Minnesota-when you can have a delta T of 110° in the winter, the insulation requirements get rather large.

  3. #18
    Join Date
    Aug 2013
    Location
    Hatfield, AR
    Posts
    1,170
    Mike,

    I sprayed 2" on my roof and 1.5" on the walls. My envelope is 40x70x10 with a 3/12 pitch. Cost me $11,500. Best money spent on the shop, hands down. I had a friend over on a day when the outside temp was 100 and had him climb a ladder and put his hand on the roof. His jaw hit the floor 14' below. The radiant heat barrier is insane. The only problem I had with my was where it caused the tin to expand just enough at a window to allow water to creep in on the J-trim channel, but I easily fixed that.

    Once I get a cyclone and stop blowing my dust outside, I'll add 3 mini-splits to cool the place and control the humidity.
    -Lud

  4. #19
    Join Date
    Oct 2006
    Location
    Bloomington, IL
    Posts
    6,009
    According to the pump numbers he sprayed on average almost 4" across my gable ends and ceiling. $9500 is what cost me as we contracted for 3" in the 40x64 4:12 ceiling and gable ends. Ill prob regret not doing walls too but those batts are in. They finished at noon yesterday. It was 91 out today and the shop was cool inside.
    Glad its my shop I am responsible for - I only have to make me happy.

  5. #20
    Join Date
    Mar 2003
    Location
    SE PA - Central Bucks County
    Posts
    65,688
    Mike, it's not uncommon to "get more" than you contracted for when it comes to closed cell spray foam. You're paying for the minimum, but it's not an exact process for the operator who's coating your walls or roof underside. I paid for R38 "upstairs" in our addition and in most places they nearly filled the 12" joist bays 3/4 of the way...which is in many places about an R60.
    --

    The most expensive tool is the one you buy "cheaply" and often...

  6. #21
    Join Date
    Oct 2006
    Location
    Bloomington, IL
    Posts
    6,009
    Kinda glad of that then as some have pointed out R20 minimum in this temp band here
    Glad its my shop I am responsible for - I only have to make me happy.

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