Well after tearing up the hearth extension I started, and putting down the micore 300 that Corie so kindly gave me, and a 1/4" layer of wonderboard, I extended the hearth extension the full width of the hearth & out 24-1/2" from the existing hearth. Just put first coat of matte finish sealer on the slate. Have 2 or 3 more, then grout, then a final coat of sealer. Going to trim it in wood, maybe oak, maybe use a moulding I have been messing with. Not sure yet. Slates are $16.00 and some change for 5 16"x16"at Home Peehole. I bought 3 boxes knowing slate & that there would be broken corners, ones with separating layers etc. 15 pcs did yield 9 decent ones. Sorry aint been around much, a bit on the antisocial side of things as of late. Even getting motivated to do the projects around here is a tough task lately.