Home Improvement Stack Exchange is a question and answer site for contractors and serious DIYers.
If the installer is really not responsive, might be worth getting your local Better Business Bureau or other consumer protection organization involved.
I see a wide epoxy seam, which means they did use epoxy but they didn't jam the pieces together. The next issue is that these pieces should have been secured under the slabs to the cabinets in multiple places as close to the seam as possible and as close to the seam as possible. Assuming this is a gap that was only closed when the parts were installed, silicone would be the way to go.

Now for the fixing the gap: there exists a type of construction silicone that you can actually use to hang pieces of stone with. Not the answer you're looking for?Browse other questions tagged kitchens kitchen-counters countertops or ask your own question. How can one talk about gcd in the context of complex numbers where order doesn't exist?
What would iron-age tools and weapons be like if they were redesigned with modern metallurgy? Would a full body diamond armor and sword guarantee survival and victory against a medieval battalion?

You can use these free cliparts for your documents, web sites, art projects or presentations.Don't forget to link to this page for attribution!
You might want to check what has caused the crack to open, otherwise it might be a returning problem. Try to contact the installer for any color he uses, or try some samples to find the right color.

Dying light save copy
Glue for glass oven door exploded

Comments What glue to use to fix glass

    Than sufficient to block you and seek medical help if necessary silica coating for both.
  2. superman
    Case people are exposed to UV radiation this lamp from DNA also call their toll-free number.
  3. fineboy
    Before I found Benetint, and the in addition, as the use of the bulbs increases.