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Old 10-16-2009, 07:51 PM   #1
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installing sink to granite


I had granite contractor's install a granite countertop and left a dry fit for the sink. Now i have to fully secure the sink to the granite. I have some clips that would hold up the sink.

My question is when making the hole in the granite for the screw anchors. Can i use a concrete bit? Also, when drilling the hole for the sink clips, is their a chance i would crack the granite?

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Old 10-16-2009, 07:54 PM   #2
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installing sink to granite


Typically in the Chicago area, the granite installer will attach the sink if it is an undermount. What type of sink is it, stainless, cast iron, silgranite, etc?
The reason for the question is that if it is a heavier one, you may need some akimi.

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Old 10-16-2009, 07:56 PM   #3
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installing sink to granite


It is an undermount sink and it's stainless. When i bought the sink, the sink came with some clips to hold up the sink.
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Old 10-16-2009, 08:05 PM   #4
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installing sink to granite


OK you are fine with the weight issue. I would be very careful in drilling into the granite. My guys use a diamond bit with a hammer drill.

I would call them and ask them to do this. (They will many times forget to drill in for the dishwasher too)

If you break the granite, they probably wont back you up.

If custom is the same in your area as mine, it really is their job to do this.
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Old 10-16-2009, 08:20 PM   #5
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installing sink to granite


i checked under my sink. I see they put some wood to hold the sink with some adhesive sticking the wood to the granite.
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Old 10-16-2009, 09:26 PM   #6
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installing sink to granite


Sounds like they might have taken care of you then. I haven't seen it done that way, but as long as they used a good bonding agent for the wood, you should be good to go.

Good luck
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Old 10-16-2009, 10:42 PM   #7
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installing sink to granite


thank you for your advice
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Old 10-17-2009, 10:32 AM   #8
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installing sink to granite


My Silestone was mounted with some Silestone pieces glued to the underside of the countertop using some horribly-smelling glue (I guess whatever they use to glue to slabs together). They put a board across the top of the countertop and then used bar clamps through the drain holes to hold it up tight. Also ran a bead of clear silicone on sink rim before mounting it.
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Old 10-18-2009, 12:07 AM   #9
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installing sink to granite


What I've seen in this area is to use the wooden blocks, which are attached with an epoxy and they use heat guns to expedite the epoxy setting. The sink is then attached to the wooden blocks, using some type of sealant around the top rim and the bar clamps over night to hold the sink in place. Thanks, David
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Old 10-18-2009, 10:35 AM   #10
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installing sink to granite


rselectric1:
What is akimi?
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Old 10-18-2009, 10:50 AM   #11
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installing sink to granite


It's an adhesive-probably the "bad smelling glue" described above.

VERYYYYY Strong stuff. Used alot of times to mount sinks without any clips

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