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cement laundry sink leaks at drain

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cement laundry sink leaks at drain Nate Nagel 01-21-2008
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Posted by beecrofter on January 21, 2008, 7:38 pm
> Hi again,
>
> after this weekend's floor stripping extravaganza, I have an ugly but
> eat-off-it clean cement floor in my laundry room, which makes me happy.
> =A0 As a result of this, I think I've determined where the musty smell was=

> coming from - it's not the washing machine as SWMBO suspected (I think
> she just wants an excuse to buy a new one, not that I'd need one if she
> really wanted it) but from the drain of the deep sink. =A0Due to the slope=

> of the slab, it was all running under the tiles to the corner under the
> washing machine, thus incriminating the innocent appliance.
>
> Upon investigation it appears that this cement deep sink, which is
> absolutely huge, heavy, and otherwise in good condition, has a leak
> around the drain assembly, which appears to be a piece of steel cast
> into the sink, and the water is apparently running down the outside of
> the drain assembly and dripping off the P-trap.
>
> My plan, which is the best I could improvise on short notice, is to
> chuck up a knotted wire wheel in my 4" grinder, knock off most of the
> rust, prep with phosphoric acid, and smear some roofing tar around the
> offending area, possibly including some scraps of screen for
> reinforcement. =A0Good plan? =A0Bad plan?
>
> I really don't want to replace this sink as it's enormous and quite
> handy, and like most other ancient, huge, useful things probably
> impossible to find a direct replacement.
>
> I'd appreciate opinions and any experience as the faucet is leaking as
> well, and rather than buy a new faucet for this sink (it clamps on the
> edge of the sink and attaches to the water lines with unions from above,
> quite unlike the faucets you'd use with a new sink) if the sink is
> hopeless I may as well bite it and buy a new, modern sink and faucet to
> match all at once.
>
> thanks,
>
> nate
> --
> replace "roosters" with "cox" to reply.http://members.cox.net/njnagel

You can probably run new fittings through the concrete and use
hydraulic cement to imbed them in the original concrete. A bit of a
chore to do but worth the effort.
Around here "Rockite" was a brand that worked for such tasks.

Posted by Nate Nagel on January 21, 2008, 7:54 pm
beecrofter wrote:
>
>>Hi again,
>>
>>after this weekend's floor stripping extravaganza, I have an ugly but
>>eat-off-it clean cement floor in my laundry room, which makes me happy.
>> As a result of this, I think I've determined where the musty smell was
>>coming from - it's not the washing machine as SWMBO suspected (I think
>>she just wants an excuse to buy a new one, not that I'd need one if she
>>really wanted it) but from the drain of the deep sink. Due to the slope
>>of the slab, it was all running under the tiles to the corner under the
>>washing machine, thus incriminating the innocent appliance.
>>
>>Upon investigation it appears that this cement deep sink, which is
>>absolutely huge, heavy, and otherwise in good condition, has a leak
>>around the drain assembly, which appears to be a piece of steel cast
>>into the sink, and the water is apparently running down the outside of
>>the drain assembly and dripping off the P-trap.
>>
>>My plan, which is the best I could improvise on short notice, is to
>>chuck up a knotted wire wheel in my 4" grinder, knock off most of the
>>rust, prep with phosphoric acid, and smear some roofing tar around the
>>offending area, possibly including some scraps of screen for
>>reinforcement. Good plan? Bad plan?
>>
>>I really don't want to replace this sink as it's enormous and quite
>>handy, and like most other ancient, huge, useful things probably
>>impossible to find a direct replacement.
>>
>>I'd appreciate opinions and any experience as the faucet is leaking as
>>well, and rather than buy a new faucet for this sink (it clamps on the
>>edge of the sink and attaches to the water lines with unions from above,
>>quite unlike the faucets you'd use with a new sink) if the sink is
>>hopeless I may as well bite it and buy a new, modern sink and faucet to
>>match all at once.
>>
>>thanks,
>>
>>nate
>>--
>>replace "roosters" with "cox" to reply.http://members.cox.net/njnagel
>
>
> You can probably run new fittings through the concrete and use
> hydraulic cement to imbed them in the original concrete. A bit of a
> chore to do but worth the effort.
> Around here "Rockite" was a brand that worked for such tasks.

forgot to mention, it's a double sink but the drains are connected
within the concrete to a single tailpiece. I'd have to core drill both
sides to do as you suggest, and I'm not sure that I have enough room to
bring two p-traps together and hook up to the exiting drain stack (tees
out of the stack above the slab) but thanks for the idea, it is
something to think about if all else fails.

nate

--
replace "roosters" with "cox" to reply.
http://members.cox.net/njnagel

Posted by Joe on January 21, 2008, 10:07 pm
> Hi again,
>
> after this weekend's floor stripping extravaganza, I have an ugly but
> eat-off-it clean cement floor in my laundry room, which makes me happy.
> =A0 As a result of this, I think I've determined where the musty smell was=

> coming from - it's not the washing machine as SWMBO suspected (I think
> she just wants an excuse to buy a new one, not that I'd need one if she
> really wanted it) but from the drain of the deep sink. =A0Due to the slope=

> of the slab, it was all running under the tiles to the corner under the
> washing machine, thus incriminating the innocent appliance.
>
> Upon investigation it appears that this cement deep sink, which is
> absolutely huge, heavy, and otherwise in good condition, has a leak
> around the drain assembly, which appears to be a piece of steel cast
> into the sink, and the water is apparently running down the outside of
> the drain assembly and dripping off the P-trap.
>
> My plan, which is the best I could improvise on short notice, is to
> chuck up a knotted wire wheel in my 4" grinder, knock off most of the
> rust, prep with phosphoric acid, and smear some roofing tar around the
> offending area, possibly including some scraps of screen for
> reinforcement. =A0Good plan? =A0Bad plan?
>
> I really don't want to replace this sink as it's enormous and quite
> handy, and like most other ancient, huge, useful things probably
> impossible to find a direct replacement.
>
> I'd appreciate opinions and any experience as the faucet is leaking as
> well, and rather than buy a new faucet for this sink (it clamps on the
> edge of the sink and attaches to the water lines with unions from above,
> quite unlike the faucets you'd use with a new sink) if the sink is
> hopeless I may as well bite it and buy a new, modern sink and faucet to
> match all at once.
>
> thanks,
>
> nate
> --
> replace "roosters" with "cox" to reply.http://members.cox.net/njnagel

Get it clean, dry and warm and patch it with Bondo. Remember to work
fast. And the stuff really is waterproof, ya know.

Joe

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