[Greenbuilding] Cellulose insulation

Corwyn corwyn at midcoast.com
Fri Jul 6 09:43:09 EDT 2007


On Jul 05, 2007, at 17:50, lolli lolli wrote:

> Hello There,
>
> My location is Austin, TX. Just trying know more about Cellulose 
> insulation and had following questions:

I will assume we are talking about loose fill cellulose applied loose, 
tight, or wet.

> Has anyone done used in walls and attic?

Never seen anyone install used cellulose insulation,  assuming it is 
clean and (was always) dry, I don't see a problem.

> How much more it will cost compared to fiberglass?

Cellulose (new) is often cheaper than fiberglass.  Check with your 
local installers.

> Is it worth the price?

For many applications cellulose is superior to fiberglass. Worth it for 
me, but I have been called an insulation nut.  (see: 
http://www.greenfret.com/house/house.html if you are interested in 
details)

> What is the payback period?

Depends entirely on your situation.  Talk with your local installer or 
give us more information about your situation (climate, house 
construction, siting, etc.)

> Is settling and moisture retaining true?

Is what true?  Cellulose does settle, to what degree depends on your 
situation, and method of installing.  Cellulose absorbs and releases 
moisture.  if it remains damp for prolonged periods it will not perform 
as specced, and will likely rot.  Getting wet is right out.

> If I put Cellulose or fiberglass in attic, can we use the space by 
> putting boards on it? Any issues?

Yes.  Floor boards over the cellulose (or fiberglass) are fine 
(assuming the attic is designed for it).

Thank You Kindly,

Corwyn

-- 
Corwyn
Kermit didn't know the half of it...
http://www.greenfret.com/
corwyn at greenfret.com




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