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-   -   insulating basement walls that are sealed (http://www.diychatroom.com/f15/insulating-basement-walls-sealed-93357/)

mcarlson 01-24-2011 02:13 PM

insulating basement walls that are sealed
 
ok so im remodeling a basement for a friend, ive sealed the wall with the zinsser watertite. do i need a vapor barrier on the wall before installing fiber glass insulation??? also another question im insulating the celiings with r13 kraft faced fiberglass insulation, when instaling above heating ducts (supply ducts not return) i know the paper can not be close to teh ducting, so can i cut the kraft facing off in the areas and it still be a functional sound and heat barrier, and will it be safe?

Ron6519 01-26-2011 10:25 AM

Quote:

Originally Posted by mcarlson (Post 576974)
ok so im remodeling a basement for a friend, ive sealed the wall with the zinsser watertite. do i need a vapor barrier on the wall before installing fiber glass insulation??? also another question im insulating the celiings with r13 kraft faced fiberglass insulation, when instaling above heating ducts (supply ducts not return) i know the paper can not be close to teh ducting, so can i cut the kraft facing off in the areas and it still be a functional sound and heat barrier, and will it be safe?

Why can't the paper be close to the heat ducts? What do you think will happen?
They have special insulation used for sound deadening.
Ron

Ron6519 01-26-2011 10:29 AM

Duplicate post

Jackofall1 01-26-2011 10:30 AM

You might want to check the correct way to insulate basement walls.

http://www.buildingscience.com/docum...ent-insulation

As for the ceiling insulation, you don't need the paper anywhere on the ceiling, on a side note, FG bat is not the greatest for sound insulation.


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