Replies

1. 
   MojoMan | Nov 06, 2004 07:31pm | #1

   Blown-in cellulose might be a more readily-available option. This usually requires two holes about 2' in diameter per stud cavity. It's usually done from the outside, but can be done fron the inside.

   Al Mollitor, Sharon MA

2. 
   DThompson | Nov 06, 2004 07:42pm | #2

   I have seen "foamed" walls with cavities, sometimes a lot of cavities. What about the vapour barrier? I would think the orginal construction does not have one. To install a VB over the existing walls and then a new finish might be ineffective and expensive. Take a good look at removing the wall finish and doing the job from scratch you could then upgrade the insulation, wiring, heating and plumbing.

3. 
   reinvent | Nov 06, 2004 07:58pm | #3

   There is a 'pourable' foam that is used for just your app. They drill a small hole (1/2") near the top of the wall, insert a hose and pump in like 4-5". It has a cake batter type consistency, and in abought 20 min has expanded up to the top of the wall filling every nook and cranny as it goes.

   
   

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   Edited 11/6/2004 4:05 pm ET by reinvent

1. 
   Piffin | Nov 06, 2004 08:53pm | #4

   Say more.

   How does one find this?

   What is its name?

   Can DIY buy it?

   Is it open or closed cell?

   Expense? 

    

   Welcome to the Taunton University of Knowledge FHB Campus at Breaktime. where ... Excellence is its own reward!

1. 
   BillHartmann | Nov 06, 2004 10:06pm | #5

   I think that I have seen it on FOMOCO's web site.

   But if it is what I am thinking of it is for things like boat floating and filling pontoons.

   You don't want to use it in a wall.

   That is unless you like walls that go in and out and in some place WAY OUT.

1. 
   reinvent | Nov 06, 2004 10:32pm | #6

   There are specialy formulated foams made to be poured inside wall cavities. I think Icynene(open cell) makes a version, maybe Corabond(closed cell) too, I need to check.

2. 
   reinvent | Nov 06, 2004 10:45pm | #7

   Just checked, and Icynene does have a pourable formula, rated at R4 per inch (open cell). Dont know if there are DIY versions out there, but I would be hesitant to try. It would be a god awfull mess if things went wrong.

   You could maybe save some$ buy prepping the walls (drilling the holes) before the foam contractor comes. Just a thought.

   Checked again and as somebody else mentioned Fomafoam makes a DIY kit. Go to wwwfomafoam.com/existing_homes.htm They even tell you how to figure out how much it costs.

   Edited 11/6/2004 3:48 pm ET by reinvent

   Edited 11/6/2004 4:04 pm ET by reinvent