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-   -   Wall Insulation - Batt vs. Blown In (http://www.diychatroom.com/f2/wall-insulation-batt-vs-blown-122717/)

mykquin 11-07-2011 07:31 PM

Wall Insulation - Batt vs. Blown In
 
Which is better to use batt insulation in a wall vs. blowing insulation in?

I have 2 exterior walls, 1 wall plaster is removed and when closing back up the walls I'll be installing batt.

On the 2nd wall, the plaster is still up and I'm debating adding a day to my project to rip it out and install batt on that wall too.

Thoughts?

Thanks!

gregzoll 11-07-2011 07:42 PM

Compacted blown would be the best route. Placing batts in the open walls, will just allow air movement. You really need to read the info at the Building Science website.

jklingel 11-07-2011 09:29 PM

Dense-packed, either cellulose or fiberglass, is far better. Figerglass batts are the worst insulation made, unless perfectly installed (a rarity) and then it is still not great. It's OK, tho.

Gary in WA 11-07-2011 10:22 PM

Will you be caulking the stud/sheathing/plates joints before insulating?

Will you be air-sealing the drywall (ADA-- airtight drywall approach)?

Do you have any rigid foam board on the exterior?

Where are you located?

Gary

mykquin 11-08-2011 03:25 PM

Quote:

Originally Posted by GBR in WA (Post 766283)
Will you be caulking the stud/sheathing/plates joints before insulating?
The studs/sheathing/plates are already up/in

Will you be air-sealing the drywall (ADA-- airtight drywall approach)?
don't know what air-sealing is...should i do this?


Do you have any rigid foam board on the exterior?
standard (1/2" or something) sheething then brick exterior


Where are you located?
Live in PA


Gary


Really appreciate the insight...

1910NE 11-09-2011 12:55 PM

check out Air Crete..


http://airkrete.com/index.php

mykquin 11-11-2011 07:27 PM

Quote:

Originally Posted by GBR in WA (Post 766283)
Will you be caulking the stud/sheathing/plates joints before insulating?

Will you be air-sealing the drywall (ADA-- airtight drywall approach)?

Do you have any rigid foam board on the exterior?

Where are you located?

Gary


I'm leaning towards blown in fiberglass insulation...any additional input?

Gary in WA 11-11-2011 07:39 PM

You should caulk the studs/plates/sheathing to prevent air leaks: pp.21: http://www.engr.psu.edu/phrc/trainin...ngbarriers.pdf

ADA: http://www.buildingscience.com/docum...wall-approach/

Problem with sheathing on a brick wall and air-permeable insulation: http://www.greenbuildingadvisor.com/...moisture-walls

http://www.buildingscience.com/docum...n-brick-veneer


I'd use cellulose or ? other than f.g: http://www.nrc-cnrc.gc.ca/eng/ibp/ir...ling-heat.html

What are the odds, I was typing when you asked.... Lol.

Gary


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