ReplyIt is this way because a lot of new construction guys simply don't do it. And yes, you are right, you will be pulling return air from the basement. I would seal it all off.Originally posted by mcex
Why are these joints typically not sealed?
Regular Guest
How does return air draw from the upstairs in a 2-story house when the return ducts in the basement are formed with the floor joists and sheet metal that has numerous small gaps that are not sealed off?
It seems to me that the air will take the path of least resistance which would be air from the basement.
Why are these joints typically not sealed?
Member
It is this way because a lot of new construction guys simply don't do it. And yes, you are right, you will be pulling return air from the basement. I would seal it all off.Originally posted by mcex
Why are these joints typically not sealed?
Professional Member*
o get some chalk and seal up what you can this will give you less to worry about. will also help a little with return upstairs.
Banned
Be aware there could be other ducts leaks that you can't se so easily.
Consider having the ducts tested and sealed if needed.
Check http://www.aeroseal.com
Regular Guest
If you have leaks that you can easily see, I hate to think what might be hidden,
go get a gallon of duct mastic and a couple of brushes and start sealing everything.
Just to be clear, you have a basement, main floor, and second floor on one system?
Regular Guest
Yes, it is all on one system. About 1000sf in basement and 2300sf between main and 2nd floor.
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