Expansion around wood joists supported by slate?

Annie_HNovember 18, 2012

Hi,

My husband and I are soundproofing our townhouse basement, constructed in 1939. Between the houses is a concrete foundation with wood joists supporting the first floor. Under each joist is a small pile of slate. The joists and the slate seem to be where the brick wall separating the houses begins, but the actual border of what material starts where is difficult to see.

My question is, as one of many steps to reduce noise between the buildings, can I put cement in these gaps in the materials around the joists? Would foam allow for more expansion in the building material through the seasons? Or would it be better just to leave it and put our double ceiling in below the joists with no gap-filling at all?

Thank you for reporting this comment. Undo
worthy

The slate was used to shim the joists to level.

To control flanking airborne sound transmission I would foam the area.

For effective soundproofing, you will have to pay attention to all the sound routes and modify the ceiling, walls and floors.

Here is a link that might be useful: Sound Isolation in Wood-Framed Buildings

    Bookmark   November 18, 2012 at 12:47PM
Sign Up to comment
More Discussions
Walkout Basement in Texas
Greetings to all! I have a sloping lot on Lake Conroe...
ZipAgent
Ductwork revisions
I am working on re-finishing a basement that was originally...
aarongarbutt
Walk-out basement design
Building a house in western Massachusetts -- it will...
Artemis_MA
What kind of ceiling to do?
We are wanting to finish out basement rustic/lodge...
jencox5508
Ceiling insulation in basement
We are finishing our basement and I am getting to the...
mirandajae
People viewed this after searching for:
© 2015 Houzz Inc. Houzz® The new way to design your home™