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#1
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weight suspended from I-joist ceiling
On 2008-06-13, mfreak wrote:
I did some googling, I like the closed cell foam a lot, but it is about 2 lbs/ sq ft. That's going to add an additional 600 lbs to my ceiling if I pack the joist cavities completely. So your ceiling is 300 ft^2. The density of closed cell foam is typically 2 lbs/ft^2, so you'd be applying it 12" thick? That's way overkill, and the cost of 300 ft^3 of foam would be something like $3000. You might consider applying it 2" thick. Be sure to use a fire-rated foam (ASTM E-84). Cheers, Wayne |
#2
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weight suspended from I-joist ceiling
the basement cieling is also the floor above.
you could check with a structural engineer but i doubt the weight your adding is a issue |
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