Stone Information and Advice (& Checklists)
First off, I want to give a big thank-you to StoneGirl, Kevin, Joshua, Mimi, and others (past and current) on this forum who have given us many words of wisdom concerning stone countertops.
I've tried to compile everything I saved over the past 8 months that I've been on this Forum. Most of it was taken from a write-up by StoneGirl (Natural stone primer/granite 101); other threads and sources were used as well.
So...if the experts could review the information I've compiled below and send me comments (here or via email), I will talk to StarPooh about getting this on the FAQ.
Stone Information, Advice, and Checklists:
In an industry that has no set standards, there are many unscrupulous people trying to palm themselves off as fabricators. There are also a number of people with odd agendas trying to spread ill rumors about natural stone and propagate some very confusing and contradictory information. This is my small attempt at shedding a little light on the subject.
On the selection of the actual stone slabs - When you go to the slab yard to choose slabs for your kitchen, there are a few things you need to take note of:
Surface finish: The finish - be it polished, honed, flamed antiqued, or brushed, should be even. There should be no spots that have obvious machine marks, scratches, or other man made marks. You can judge by the crystal and vein pattern of the stone if the marks you see are man-made or naturally occurring. It is true that not all minerals will finish evenly and if you look at an angle on a polished slab with a larger crystal pattern, you can clearly see this. Tropic Brown would be a good example here. The black spots will not polish near as shiny as the brown ones and this will be very obvious on an unresined slab when looking at an acute angle against the light. The black specks will show as duller marks. The slab will feel smooth and appear shiny if seen from above, though. This effect will not be as pronounced on a resined slab.
Bottom line when judging the quality of a surface finish: Look for unnatural appearing marks. If there are any on the face of the slab, it is not desirable. They might well be on the extreme edges, but this is normal and a result of the slab manufacturing process.
Mesh backing: Some slabs have a mesh backing. This was done at the plant where the slabs were finished. This backing adds support to brittle materials or materials with excessive veining or fissures. A number of exotic stones will have this. This does not necessarily make the material one of inferior quality, though. Quite often, these slabs will require special care in fabrication and transport, so be prepared for the fabricator to charge accordingly. If you are unsure about the slabs, ask your fabricator what his opinion of the material is.
- Cracks and fissures: Yes - some slabs might have them. One could have quite the discussion on whether that line on the slab could be one or the...