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Old 05-20-2012, 05:01 PM   #1
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fiberglass shower base drain help


hello all. new to this forum and new to home improvments. my house was made in the early 70's. my problemis i am trying to renovate my stand in shower. it had a concrete base with a water barrier. i demo'd everything and started looking at the cast iron drain in the concrete floor and im not sure how to adapt it to the new pvc drain for the fiberglass shower base. there apears to be a cast iron flange mounted on top of the cast iron flange in the concrete. the rubber water barrier is in between these flanges. i had to cut the water barrier around the flange to remove the old water barrier becaus ei couldnt figure out how the two pieces were together. the flanges are so rusted and deteriorated i cant seem to figure it out. the top of the flange has a 2" threaded hole. i tried to screw in a 2" pvc pipe after cleaning up the threads but no luck. see pic. help!!! not sure what to do next..
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Old 05-20-2012, 05:44 PM   #2
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Rent an electric jack hammer--($59 or so) open up the floor---cut out the old P-trap and change the piping to PVC --use a rubber Fernco type fitting to go from iron or steel to PVC--Mike--

Pictures of the old piping will help if you are lost when looking at the old stuff under the floor.

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Old 05-20-2012, 05:49 PM   #3
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Is there an easier option?
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Old 05-20-2012, 06:03 PM   #4
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fiberglass shower base drain help


No--I just ripped out a huge mess caused by someone trying to avoid an hours work--cost that home owner thousands-(4 to be exact)

Breaking open the floor will only take an hour --then cut and replace another hour--

It's not that difficult---
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Old 05-20-2012, 06:11 PM   #5
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fiberglass shower base drain help


Do o need to remove the old ptrap or can I just cut above it and used the rubber coupler?
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Old 05-20-2012, 06:23 PM   #6
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Those old iron or steel P-traps get very rough inside--grabbing hair and soap scum--

I would never bury one under a new shower--

But to answer your question--if there is room for the rubber boot and the new drain set--yes--
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Old 05-20-2012, 07:13 PM   #7
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Appreciate it.
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Old 05-20-2012, 08:46 PM   #8
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Originally Posted by busa4 View Post
Appreciate it.
yep mike hit the nail on the head on this one...don't waste any time ...break it out...
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Old 05-22-2012, 01:09 PM   #9
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Quote:
Originally Posted by oh'mike View Post
Rent an electric jack hammer--($59 or so) open up the floor---cut out the old P-trap and change the piping to PVC --use a rubber Fernco type fitting to go from iron or steel to PVC--Mike--

Pictures of the old piping will help if you are lost when looking at the old stuff under the floor.

thanks mike. did exactly that and you were right. took less than an hour. i got lucky as the piece you see in the picture was held in by a rubber couple and hose clamps roughly 12" down. loosened it and removed it. slid a new piece of pvc in its place and tightened the clamp. done!!!!! now i can finally start building up the bathroom.. thanks again....

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