[jacselee]

How do you guys prep to pour concrete over new basement pipes?

 

[CENTERLINE MV]

Have been building high efficiency homes as of late. What we've been doing is laying down three layers of 2" foam (one home was 5 layers). Next, 9 mil plastic cut around pipes. The holes cut in the plastic around the pipes are sealed with acoustical sealant. Then, we cut an additional square of plastic tight around each pipe (12" x 12") and seal the edges of that once again with acoustical sealant. Before the pour, each pipe is wrapped with sill-seal.

 

[jacselee]

Have been building high efficiency homes as of late. What we've been doing is laying down three layers of 2" foam (one home was 5 layers). Next, 9 mil plastic cut around pipes. The holes cut in the plastic around the pipes are sealed with acoustical sealant. Then, we cut an additional square of plastic tight around each pipe (12" x 12") and seal the edges of that once again with acoustical sealant. Before the pour, each pipe is wrapped with sill-seal.

Sorry I should have been more clear. This is busted up concrete for pipes for a remodel

 

[CarpenterSFO]

Jacs:

Are you talking about this job?

http://www.contractortalk.com/f9/basement-bath-remodel-frame-plumb-first-146292/#post1975443

 

[CarpenterSFO]

My interpretation of Jacs's earlier post is that he's busted up the basement floor and done some new drain plumbing for a new tub and other fixtures. I think it's possible that he's not talking so much about penetrations as that the new drain pipe will be embedded in the new basement floor, or maybe below it a little, not sure.

Jacs, pictures would help people understand.

 

[jacselee]

Jacs: Are you talking about this job? http://www.contractortalk.com/f9/basement-bath-remodel-frame-plumb-first-146292/#post1975443

Yes. We broke up concrete. And had to frame over broken concrete. Worked fine. Plumber just finished and inspection is scheduled for Friday. So I'm just preparing.

Heard that we should drill into concrete and use rebar. But that's a lot of work. Also heard about gravel. I'm looking to just compact dirt and pour.

 

[huggytree]

I just pour it

I jackhammer the concrete, so the cuts are jagged...the new concrete sticks no problems w/o rebar

if you smooth cut it id use some rebar

you may be over thinking it to be worried

 

[jacselee]

I just pour it

I jackhammer the concrete, so the cuts are jagged...the new concrete sticks no problems w/o rebar

if you smooth cut it id use some rebar

you may be over thinking it to be worried

Yes. Overthinking. Thank you.