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Old 13-01-2020, 07:59 PM   #1
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Kitchen Sink Leaking

Hi,
Any recommendation to fix leaking from under mount sink?
My kitchen sink leaking from here.


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Old 14-01-2020, 12:46 AM   #2
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i presumed your sink is still in good condition, no cracks at the tap area?
How about replacing a tap having a thicker base?
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Old 14-01-2020, 09:55 AM   #3
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i presumed your sink is still in good condition, no cracks at the tap area?
How about replacing a tap having a thicker base?
Thanks for the reply, bro.
The leak is from silicon between the sink and granite top.
It happened before, 3 years ago. I called granite guy who installed it to patch it up.
Now, it comes again.
Is there any better way?
I understand that under mount sink will usually have this issue?
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Old 14-01-2020, 10:15 AM   #4
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Thanks for the reply, bro.
The leak is from silicon between the sink and granite top.
It happened before, 3 years ago. I called granite guy who installed it to patch it up.
Now, it comes again.
Is there any better way?
I understand that under mount sink will usually have this issue?
it's due to wrong choice of sealant. the current sealant used likely have lost grip with the surface of your sink and tap over time, due to hardening of the sealant, and/or movement of the joint (when you swivel the tap) loosening the sealant. hence water is seeping through where the sealant meets the surface of sink/tap. get the sealant replaced, a handyman worth his salt will know which appropriate sealant type to use.
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Old 14-01-2020, 09:22 PM   #5
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Leak due to sealant or tap?

If sealant, the leak should be from everywhere around the sink.

Also, you don't usually spray water near the tap isn't it? You may tend to spray everywhere.

Mine is also granite and sink like yours. Luckily no leak so far. Already nearly 10 years.


Thanks for the reply, bro.
The leak is from silicon between the sink and granite top.
It happened before, 3 years ago. I called granite guy who installed it to patch it up.
Now, it comes again.
Is there any better way?
I understand that under mount sink will usually have this issue?
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Old 14-01-2020, 09:25 PM   #6
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By the way bro, how is your MHI aircon?

Sadly, my MHI of 9.5 years broke down just last month.
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Old 15-01-2020, 09:25 AM   #7
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Hi,
Any recommendation to fix leaking from under mount sink?
My kitchen sink leaking from here.


You need a rubber seal. Can purchase from DIY shop. Around $3 (black color flat ring). Don't use sealant as it never last long.
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Old 15-01-2020, 10:35 AM   #8
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Leak due to sealant or tap?

If sealant, the leak should be from everywhere around the sink.

Also, you don't usually spray water near the tap isn't it? You may tend to spray everywhere.

Mine is also granite and sink like yours. Luckily no leak so far. Already nearly 10 years.
It's sealant.
Water everywhere lah, bro when washing.
Yours so good. T
What kind of sealant you used?
Mine was those generic one[clear type] found in hardware shops.
These granite guys say this is the best they can do.
It won't last long..This is 3rd time in 10 years.

Last edited by mkaung2000; 15-01-2020 at 10:38 AM..
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Old 15-01-2020, 10:37 AM   #9
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By the way bro, how is your MHI aircon?

Sadly, my MHI of 9.5 years broke down just last month.
Oh.. which part broke down? Compressor?
Mine still going strong. As cold as new and quiet. Touch wood!
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Old 15-01-2020, 10:43 AM   #10
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it's due to wrong choice of sealant. the current sealant used likely have lost grip with the surface of your sink and tap over time, due to hardening of the sealant, and/or movement of the joint (when you swivel the tap) loosening the sealant. hence water is seeping through where the sealant meets the surface of sink/tap. get the sealant replaced, a handyman worth his salt will know which appropriate sealant type to use.
Any recommendation, bro?
Mine something like this. Just generic one.
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Old 15-01-2020, 10:44 AM   #11
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You need a rubber seal. Can purchase from DIY shop. Around $3 (black color flat ring). Don't use sealant as it never last long.
How to insert rubber seal?
The gap there is <5mm, I think. May be 2~3mm?
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Old 15-01-2020, 06:25 PM   #12
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It's sealant.
Water everywhere lah, bro when washing.
Yours so good. T
What kind of sealant you used?
Mine was those generic one[clear type] found in hardware shops.
These granite guys say this is the best they can do.
It won't last long..This is 3rd time in 10 years.
No idea what sealant. I observe it's black.

It was done during renovation.

I notice your tap is the flexible type?

That could be the problem. When you flex here and there, you will create wear and tear.

My tap is the fixed one. So no such wear and tear problem.

Your wear and tear must be near the base of the tap. Try changing the tap to a fixed one.
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Old 15-01-2020, 06:26 PM   #13
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Oh.. which part broke down? Compressor?
Mine still going strong. As cold as new and quiet. Touch wood!
Compressor died already.

Direct agent quoted $1.4k to replace.
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Old 15-01-2020, 06:44 PM   #14
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Any recommendation, bro?
Mine something like this. Just generic one.
unfortunately I do not know what is the brand/model of the current sealant around my sink. I faced the same problem as you did, the original sealant was the translucent type, started leaking in less than a year (same undermount design, with similar faucet type). replaced with a grey coloured sealant, and has been leak-free for the past 7 years or so.
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Old 15-01-2020, 09:58 PM   #15
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No idea what sealant. I observe it's black.

It was done during renovation.

I notice your tap is the flexible type?

That could be the problem. When you flex here and there, you will create wear and tear.

My tap is the fixed one. So no such wear and tear problem.

Your wear and tear must be near the base of the tap. Try changing the tap to a fixed one.
Oh. May be that's the problem
Mine is clear transparent type. I think not suitable for the water.
No, it's not due the tap. There was not moving part at the base of the tap[leaking area].
Tap rotate at this joint, not at the base.


I previously used different kind of tap. Also got leak.
You can see there are gaps. Silicone was originally clear[transparent]. It became black.
I now think it's the quality of silicone. I read silicone must be 100% pure.
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