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Undermount Sink to Granite

eddie57's picture

Hi,

I have granite in my kitchen and the stainless steel sink which was glued to the bottom of the granite recently fell off. I want to re-attach the sink but I am not sure what kind of adhesive should I use?  Someone said to use epoxy and I read on the web that I should use pure clear silicone. Can someone with experience in this craft  please provide some recommendations. Also, I want to fasten the sink with clips but aren't sure what kind to use or when to buy them. Any comments are appreciated. Thanks in advance.


Eddie

eddie (post #201356, reply #1 of 10)

I would use silicone and crawl under there and prep the underside of the rim of that sink for blocking to hold it up.

If your sink width almost fills the opening in the cab from side to side, simple fix.  Screw blocks to the side of the cabinet under the rim of the sink.

Temporarily hold it up with some sort of platform underneath to the center of the sink.  This will give you enough room to install the blocking.

Do not use clips screwed to anchors drilled into the granite.

 

What kink of sink do you have?  Cast iron, SS or composite?

A Great Place for Information, Comraderie, and a Sucker Punch.

Remodeling Contractor just outside the Glass City.


http://www.quittintime.com/

 


> What kink of sink do you (post #201356, reply #2 of 10)

> What kink of sink do you have?  Cast iron, SS or composite?

>> I have granite in my kitchen and the stainless steel sink which was glued to the bottom of the granite recently fell off


Of all the preposterous assumptions of humanity over humanity, nothing exceeds most of the criticisms made on the habits of the poor by the well-housed, well-warmed, and well-fed.  --Herman Melville

Buzz Friday. (post #201356, reply #3 of 10)

I admit, I had been drinking.

A Great Place for Information, Comraderie, and a Sucker Punch.

Remodeling Contractor just outside the Glass City.


http://www.quittintime.com/

 


It's amazing how easy it is (post #201356, reply #4 of 10)

It's amazing how easy it is to miss something like that when you read a post, especially if you just kind of glance at it without reading through carefully.  I've made similar mistakes more than once.  (Maybe 3-4 times ;) )


Of all the preposterous assumptions of humanity over humanity, nothing exceeds most of the criticisms made on the habits of the poor by the well-housed, well-warmed, and well-fed.  --Herman Melville

Followup (post #201356, reply #5 of 10)

Thanks for the reply.

Is the blocking a temporary support or will it be permanent?  Also,  do I apply the silicon to the granite, the sink or both?  Finally do I need to open the windows will I am working with the silicon?  Thanks again.

Ed (post #201356, reply #6 of 10)

The blocks STAY.  If you have a habit of sticking your head in the sink and looking around............................make it pretty.

How WIDE is the Cabinet?  How wide is the flange of the sink?

You should be able to screw blocks to the sides of the cabinet .  Those blocks need to hold up the sink.  You won't be able to put any screws high, but you should be able to put them just below the bottom of the sink.

or

you could block the sides so you can still get the sink up in the opening.  Then screw another block that holds the sink at the bottom of the bowl-each side.

Three ways to do the silicone-from above, reach below and apply the bead to the bottom of the granite.- difficult, but easy access.from above.

crawl into the sink base and attempt to put a bead on the granite from below.  -  yuk, some fell on me.

or bead the top of the sink and don't grab it putting the sink in there.  Your choice.

None will be mess free-be ready to clean up the sink and the granite.

 

There's one more way-get the sink in the cab and up to within an inch of the stone.  Prop it up with whatever you got.  Small rubbermaid one step stool with 2 by blocks on top.  Caulk the sink-working from above.  Do the final lift of the sink to seat the caulk.  Clean up edges.

Most times you'll run a final bead along the juncture of granite to sink.  The first bead is just because.  The last one will seal it and help hold it side by side.

Should you open the window?  Beats me.  Read the label, the fumes from silicone are noxious but I don't think will knock you down.  Ventilate if you wish.

 

I've used thinner, denatured alcohol to clean up silicone.  I've also taped off areas so it can't get on it..  Work time on silicone till you start to ruin a beautiful thing, isn't long.so don't screw up the first bead and make the last one real nice.

A Great Place for Information, Comraderie, and a Sucker Punch.

Remodeling Contractor just outside the Glass City.


http://www.quittintime.com/

 


Unless you're incredibly (post #201356, reply #7 of 10)

Unless you're incredibly sensitive to chemical fumes the silicone shouldn't bother you.  It has an odor, but isn't particularly hazardous.  (In fact, don't worry about getting it on your hands -- it'll happen no matter how much you try to avoid it, and the stuff will peel off after a few hours.)


Of all the preposterous assumptions of humanity over humanity, nothing exceeds most of the criticisms made on the habits of the poor by the well-housed, well-warmed, and well-fed.  --Herman Melville

Thanks for all the replies.  (post #201356, reply #8 of 10)

Thanks for all the replies.  About how many tubes of silicone do you recommend for the sink.  It's an avg. size sink.


Eddie

how many (post #201356, reply #9 of 10)

one, probably clear.

To be good, you had a sink there b/4-CLEAN the surfaces you're going to caulk GOOD.

A Great Place for Information, Comraderie, and a Sucker Punch.

Remodeling Contractor just outside the Glass City.


http://www.quittintime.com/

 


Sink (post #201356, reply #10 of 10)

I don’t know but undermount stainless steel sinks have become household staple in recent years. If you can buy spam link removed so you visit this site. I hope you like this site.