Slabs for countertops typically come in two different thicknesses: 2 cm and 3cm.
Two-centimeter slabs are about 3/4" thick, and as such most people consider them too thin on the edge for a pleasing appearance, especially in kitchens. To aleviate this, it is standard to laminate a strip as wide as the overhang and glue it to the underside of the counter. Then a plywood subtop is put under the counter to raise the underside of the overhang even with the top of the cabinets. These things add extra labor and material to the cost overall, and must be considered.
Three-centimeter slabs are just shy of 1-1/4" thick, and are thick enough to present a nice face on the edges without adding anything. While 3 cm material cost more, being half again as thick, the reduced labor and lack of additional material usually makes it equal or less costly than 2 cm material of the same type. Moreover, there will be no seam on the face of the edges and in the case of undermount sinks (or other exposed holes in the counter) the visible edges of the stone at the cutout will match the outside edges. Davis Tile & Marble carries more 3 cm material than anyone else in Kona because we believe it is a better product at a similar price.
Countertops can be edged with many different edges. The chart below shows how the edges look. As a rule, the more material that has to be removed, the more the edge will cost. Also laminating the edge (see above) will also add to the price. Also, the more material removed means that the edge has a thinner look, which is usually less asthetically appealing.
Davis Tile & Marble, Inc.
74-5522 Kaiwi St.
Kailua-Kona, HI 96740