Replies

1. 
   Marson | Oct 28, 2008 02:04pm | #1

   Brads will work fine. Cellulose is fairly light, and if your paneling is so poorly nailed that it can't hold cellulose up, then it would eventually fall down on it's own anyway. Go for it.

1. 
   caseyr | Oct 29, 2008 04:13am | #4

   "Cellulose is fairly light"By itself, cellulose insulation may be fairly light. However, I had an experience when renting an apartment where the cellulose that was placed above a false ceiling gained sufficient moisture that it caused the false ceiling to collapse (it was 2'x3' fiber ceiling tiles). Believe me, water soaked cellulose insulation is not "fairly light".

2. 
   MikeHennessy | Oct 28, 2008 02:17pm | #2

   Put up your vapor barrier with staples -- a bunch of 'em -- or cap nails. That alone will support the celulose. That way, if you ever have to remove a panel, you won't dump the insulation. I usually install scrim fabric first, glued to the framing with watered down Titebond applied with a roller, and then stapled. But you can skip that step.

   You can install the insulation prior to the paneling if you don't have access from the other side or if it's easier to get to from below. Just pop a hole in the VB here and there for your hose. Then install the paneling as normal. Takes a bit of pushing to get the paneling up tight to the framing if you do it that way, but it's not bad, especially since your planks are only 6" wide.

   BTW, you might consider narrow crown staples for the paneling instead of brads since it's overhead. Nail to the framing through the tongue.

   Mike Hennessy
   Pittsburgh, PA

1. 
   beartrouble | Oct 29, 2008 03:24am | #3

   Thanks for the recommendation. I never really thought of the vapor barrier as the initial support but yeah, given the low weight of the celulose, the VB can likely give all the support needed. The brads will then just have to support the T&G planks

3. 
   joeh | Oct 29, 2008 05:38am | #5

   Couple questions, where are you?

   Why do you need a vapor barrier?

   Cells are cheap, why only R30, and what is the moisture source you're concerned about?

   Joe H

1. 
   beartrouble | Oct 30, 2008 11:50am | #7

   I am in mid-northern Canada. Code insists on vapor barriers everywhere here, even behind electrical boxes that would otherwise puncture the VB.

4. 
   Piffin | Oct 29, 2008 02:15pm | #6

   I've done the same with 15ga 2" nails but the framing was 16" oc

    

    

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