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Arky217 10-29-2011 01:45 PM

Another cellulose question
 
This is a new construction house, single story, unenclosed crawl space; no drywall is up yet and no siding has been installed yet.

I will be blowing cellulose above the ceiling, but for the walls and floor, I was going to go with Roxul batts for ease of installation.

However, after adding up all the prices, the Roxul is turning out to be 3.5 times the price of cellulose. (And no, fiberglass is not even in the picture because of numerous reasons)

Actually, I would rather have cellulose in the walls and floor than Roxul, but the installation appears to be a bugger.

For example, of the three ways to install the cellulose, the wet blown method and both the high density dry blow methods (using Insulweb or through holes after the drywall is up), they all seem to be out for me since there appears to be no place near me to rent the necessary equipment.

The box stores have the regular attic blower but I understand it does not have the capacity to dry blow the walls or floor to the correct density.

(Yes, there are insulation companies that will come and do it whichever way you want, but for me, the cost is prohibitive)

Has anyone come up with a method of putting cellulose in walls or floors that doesn't require equipment other than the typical blower that's available at the box stores ?

Arky

Wildie 10-29-2011 07:51 PM

Quote:

Originally Posted by Arky217 (Post 759521)
This is a new construction house, single story, unenclosed crawl space; no drywall is up yet and no siding has been installed yet.

I will be blowing cellulose above the ceiling, but for the walls and floor, I was going to go with Roxul batts for ease of installation.

However, after adding up all the prices, the Roxul is turning out to be 3.5 times the price of cellulose. (And no, fiberglass is not even in the picture because of numerous reasons)

Actually, I would rather have cellulose in the walls and floor than Roxul, but the installation appears to be a bugger.

For example, of the three ways to install the cellulose, the wet blown method and both the high density dry blow methods (using Insulweb or through holes after the drywall is up), they all seem to be out for me since there appears to be no place near me to rent the necessary equipment.

The box stores have the regular attic blower but I understand it does not have the capacity to dry blow the walls or floor to the correct density.

(Yes, there are insulation companies that will come and do it whichever way you want, but for me, the cost is prohibitive)

Has anyone come up with a method of putting cellulose in walls or floors that doesn't require equipment other than the typical blower that's available at the box stores ?

Arky

I used Roxul to insulate my attached garage/laundry and think that its the greatest. Well worth the extra cost. It forms a great fire barrier.
I had cellulose blown in the house walls (older home) and it has done an acceptable job also.
The main problem with blowing cellulose in the walls is knowing that the cavity is completely filled. And it may settle down, leaving the top of the cavity open. And then all the holes in the wall have to be repaired. [my contractor drilled 2 holes in each cavity, one @4' and one below the ceiling] Its a messy procedure.
Cellulose in the attic is OK because you can see the coverage.
Using Roxul in the walls will allow you to do the job quickly, cleanly and not have concern with future problems.
Well worth the extra money!


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