I have had it for a year and a half and no problems at all. Just make sure you seal it.

We have the slate and hopefully in a couple of months will be installing, what did you seal it with, what size joint and type of qrout? Many thanks!

We sealed it with Superior Enhance and Seal for Slate. The joints are 1/4" and we used Superior Sanded grout in Natural,which is really a grayish color. Here is a picture.

Beautiful, great look, what delineates the first row from the diagonal set?

We did a slate backsplash and did three coats of sealer before we grouted, then after it was grouted we applied another coat of sealer... we found the grout cleanup to be a breeze after we did this... any grease splatters from cooking clean right up..

I can't remember the name of the sealer, its from Lowes and was a semi-gloss.

The accent separating the straight from the diagonal tiles is called a listello. It is made of natural stone and is about the diameter of my index finger and each piece is about a foot long. Hope this helps.