DIY Chatroom Home Improvement Forum

DIY Chatroom Home Improvement Forum (http://www.diychatroom.com/)
-   Remodeling (http://www.diychatroom.com/f15/)
-   -   Insulation in rennovation...am I correct? (http://www.diychatroom.com/f15/insulation-rennovation-am-i-correct-32003/)

gone_fishing 11-16-2008 05:47 PM

Insulation in rennovation...am I correct?
 
Quick background...I live in a split level home. In January I will start a project in which I will gut the garage (living space above and adjacent). Once gutted I am sectioning off the back 1/3 and adding a home office. My place was to add R19 on the exterior wall, frame along the cinderblock wall and add R13 to all interior walls and R30 to the ceiling. I read that unfaced with a 6 mil vapor barrier is more effective. Am I correct on my plan?

Oh yeah, my home is outside of Philadelphia.

buletbob 11-16-2008 07:13 PM

sounds as tho you did your home work. Just make sure you have the R-19 In a 2x6 wall. Over lap your seems and tape them. BOB

gone_fishing 11-16-2008 07:38 PM

The exterior wall is 2x4...do I use R13 because of that?

ponch37300 11-16-2008 09:48 PM

2x4=R-13, When you try to fit to much insulation in a wall and compress it you actually are hurting the R value.

buletbob 11-17-2008 05:34 AM

gonefishing , Ponch is correct. even in the ceiling it will have an effect with R-30 in a 2x6 ceiling beam bay. in that case I install r-19 unfaced and then go over it in the other direction with the R-30 keeping the sides of the insulation tight. The Idea is to not expose the sides of the insulation or else it cuts down on its performance.


All times are GMT -5. The time now is 04:41 AM.