Insulation for shop: cellulose or foam?
#8
  
What has the brain trust's experience been with either one?  I've been assuming foam but contractor offers both and I'm looking for experience.

The roof will be foam, but the walls could be either.  Would I need to cover all the cellulose to hold down dust problems?

My experience with glue-in-place-cellulose has been that it constantly sheds so it would need to be covered.

Anyone used either/or?
"Truth is a highway leading to freedom"  --Kris Kristofferson

Wild Turkey
We may see the writing on the wall, but all we do is criticize the handwriting.
(joined 10/1999)
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#9
  Re: Insulation for shop: cellulose or foam? by Wild Turkey (What has the brain t...)
Closed cell foam is the best insulator but isn't cheap. Moisture reduces the R value of most insulations but not closed cell foam.
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#10
  Re: Insulation for shop: cellulose or foam? by Wild Turkey (What has the brain t...)
You're not going to cover the walls?

I wouldn't want foam exposed at all! If I did foam, it would only be a safe foam like Icynene. It doesn't gas off chemicals where you need a respirator or vent and clean the space for 24 hrs.

Cellulose may not burn but it has been known to smolder, but usually puts itself out. (I experimented with it). It's better than the rest fiber types to stop infiltration.

I would consider foil back or vinyl back fiberglass batting on exposed walls.

If you're going to cover the walls, then Icynene foam is the best, but you'll never run a new wire in the wall. Cellulose won't be a dust problem. Batting does a fine job.
"There are no strangers- only friends I haven't met.
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#11
  Re: Insulation for shop: cellulose or foam? by Wild Turkey (What has the brain t...)
Icynene guys here are idiots. They push .5lb open cell for more money than 2lb closed cell. You better ask actual product questions if you have them out. They will try and fill you with stories about what they have done for customers vs what their product really is. Ymmv.


Glad its my shop I am responsible for - I only have to make me happy.

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#12
  Re: Insulation for shop: cellulose or foam? by Wild Turkey (What has the brain t...)
You aren't considering fiberglass?
I started with absolutely nothing. Now, thanks to years of hard work, careful planning, and perseverance, I find I still have most of it left.
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#13
  Re: Insulation for shop: cellulose or foam? by Wild Turkey (What has the brain t...)
Have the walls netted and used blown fiberglass.
I would do the attic with fiber also, after you put a ceiling in. Winkgrin
Steve

Missouri






 
The Revos apparently are designed to clamp railroad ties and pull together horrifically prepared joints
WaterlooMark 02/9/2020








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#14
  Re: Insulation for shop: cellulose or foam? by Wild Turkey (What has the brain t...)
I used Dow Thermax for my basement insulation. It was called 11177-PL-300 Foam Board Adhesive-2902.  This was the only foamboard that did not require 15 minute thermal barriers; in Maine it was certified as equivalent through the state Fire Marshalls office.  Two inch Thermax has a  R 13 value.  Both sides have thick aluminum cover.  Each piece cost me $53 but it did not require gypsum board.  I had to special order it here in lots of 20 pieces of 4x8 sheets. You can find out info from a Dow website;  Dow was very helpful. Thermax's shiny finish brightens the shop.  I used double thickness(giving R26) above and just below the ground , single thickness down deeper-the bottom four feet for me. 

    You can find out what other folks in your area by calling the local town building inspector.   

Paul from the beautiful coast of Maine.
Paul from the beautiful mid-coast of Maine (USA)
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