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re: Spray Foam vs. Fiberglass
Posted on 3/12/15 at 5:14 pm to Rev1897
Posted on 3/12/15 at 5:14 pm to Rev1897
Did closed cell in the walls and open in the attic on my current build. We shall see once it's ready to move in to.
My only advice with spray is make sure the unit is not oversized and possibly add a separate dehumidification system. That's what I did.
My only advice with spray is make sure the unit is not oversized and possibly add a separate dehumidification system. That's what I did.
0
Posted on 3/12/15 at 5:15 pm to tigeraddict
If you have spray foam, you need a 2 stage unit that runs at both temp and humidity points. When I built I installed 21 seer Carrier units. My downstairs unit has a 12x12 outside air return to pull in fresh air...
Posted on 3/12/15 at 5:21 pm to wickowick
This too. You need a fresh air intake also. And yes a variable speed unit is preferable but not necessarily required. It was more cost effective for me to do a single speed and add a whole home dehumidifier that runs through the fan of the a/c unit.
Posted on 3/12/15 at 11:09 pm to Rev1897
Rockwool is a better option ober fiberglass and spray foam.
Posted on 3/13/15 at 8:47 am to XxxSpooky1
Just curious, why do you feel this way?
I've been pretty adverse to spray foam, but I finally found a good sub that I trust to make sure the application is done right. There are bad subs that can make spray a nightmare, that's for sure!
With spray the most important benefit it the air sealing IMO. Even if R values are comparable the absence of air leakage with foam makes it much more energy efficient.
I've been pretty adverse to spray foam, but I finally found a good sub that I trust to make sure the application is done right. There are bad subs that can make spray a nightmare, that's for sure!
With spray the most important benefit it the air sealing IMO. Even if R values are comparable the absence of air leakage with foam makes it much more energy efficient.
Posted on 3/13/15 at 3:17 pm to XanderCrews
quote:
XanderCrews
quote:
I am building and will be using this. It is not real big in the south.
Roxul
What is the cost compared to glass? Is it on a roll like glass?
Posted on 3/13/15 at 6:48 pm to WPBTiger
Anyone have experience with the BIBS system?
Posted on 3/13/15 at 9:47 pm to WPBTiger
(no message)
This post was edited on 12/21/21 at 10:09 am
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