Granite Slab Tops and Sealing

Quarried Rock, With All That Implies

Granite is cut out of the ground and polished. There is no binder in it, no pigment, nothing that ultraviolet light can degrade. A granite top facing an unshaded west window in Riverside will be the same colour in twenty summers as it is on install day, and that single property is why we keep recommending it for the brightest kitchens in the city even though quartz is the easier sell.

The trade you make for that is porosity. Natural stone absorbs, at wildly different rates depending on the slab, and an unsealed or overdue granite will take a stain from cooking oil, from a wet cast iron pan left overnight, or from the ring under a bottle of olive oil next to the range.

Sealing, Measured Rather Than Guessed

Nobody should be resealing on a calendar they read on the internet. Test the stone.

Put a tablespoon of water on the counter, somewhere it gets used, and leave it fifteen minutes. Wipe it off and look. If the stone underneath has darkened, it has absorbed and it is due. If it is unchanged, leave it alone, because a sealer applied over a surface that does not need it just sits on top and hazes.

The interval that test gives you varies enormously. A dense dark slab, an Absolute Black or a tight Ubatuba, can go three or four years and sometimes longer. A pale open grained Colonial or a Bianco Antico under a coffee machine can want it every year. We seal on install and we tell you honestly which of those two your slab is, because the sealing schedule is part of the price of the material and you should know it before you commit to a colour.

Picking the Slab in Person

Granite is not a sample chip. Colour, movement and grain change across a single slab and across two slabs from the same block, so the piece you saw on a two inch tile is not what will be on your island. We go to the yard with you, or send you with the numbers you need. On a kitchen large enough to take two slabs we mark up where the seam falls and how the veining will run through it, so the pattern continues rather than stopping dead at the join.

Small jobs are the other reason to walk a yard. A bathroom vanity, a bar top or a laundry counter rarely needs a full slab, and the remnant racks are full of offcuts from expensive material somebody else already paid for. A vanity in a premium granite from a remnant often lands well under what a modest full slab would cost.

Heat, Chips and the Honest Limits

Granite takes heat better than quartz does. It does not scorch and a hot pan is unlikely to mark it. That is not permission: thermal shock, meaning a very hot pan onto a cold sealed surface, can still crack a slab, and we have replaced tops where that is exactly what happened.

The genuine weakness is edges and corners. Granite is hard but brittle, and a heavy pot swung into an exposed corner will chip it. Chips can usually be filled and colour matched invisibly enough at arm’s length, and we do that work as a small standalone job. What we cannot fix convincingly is a chip in the middle of a polished field, so an eased or slightly rounded edge profile on a busy family kitchen is worth choosing over a sharp square one.

Call (951) 293-2746 and we will tell you which material we would put in your house.