I’ve got to bond an undermount sink made of granite to a slate countertop. I understand that slate has natural “oils” that make glueing difficult… but I’m not sure if that is fact or fiction.
I’d like to hear from those who have attempted such glue-ups with slate and granite.
Thanks, in advance.
Marty
Replies
I'd be looking at stone and sculpture forums on this question. Kind of like asking a stone forum a woodworking question! In one of my sculpture supply cataolgs there is a glue for stone called Akemi. Do a google search for stone adhesives.
http://www.tiletool.net/Stone_Adhesives.asp
http://www.akemi.com/english/stein/e_stein.htm
http://www.sculpt.com/
I would go with plain, old "construction adhesive". There are many brands, including Liquid Nails. That stuff sticks to any, anytime and forever. My only concern would be if the slate you have is inclined to delaminate.
Jerry
The pro's in the granite countertop business use an epoxy.
Jeff
Poliester based catalized glue. The one I use here is made in Ravenna (S. Bernardino) By Camon it's called Camontixo. It hardens in about 5 minutes and will glue any stone granite or marble. It also works well as a filler for paint grade woodwork. If go to any stone worker for tombstones you can probably find something of the sort.
Philip
I'd hope you're just sealing the sink to the slate. That is, you're not expecting the seal to hold the weight of the undermount sink to the slate. When I do undermount sinks with slab stone counters, I support the weight of the sink with a plywood subtop. The subtop goes on, the sink goes in (and is entirely supported), and the slab stone goes on over that. The stone guys caulk the interface between the sink and the stone with color-matched caulk. I'd do something similar with your granite sink -- support it with wood, and caulk the gap between it and the slate. My stone guys do the color matching on the spot by mixing universal colorants into acrylic caulk.
This forum post is now archived. Commenting has been disabled