In the 17 years we've had our granite counter tops in our current home we've had to reseal them just once about 5 years or so ago. I normally clean them with a cleaner made for stone. The sealer I used I purchased from the company who cut the granite for me (I don't remember the brand).
Originally Posted By: badtlc
Since you just bought granite, I'd like to get your thoughts and find out if you were aware of the following:
1) Granite is not approved by the FDA as a food prep surface. It is unsanitary and cannot be reliably cleaned.
2) Granite is a common source of cancer causing radon inside the homes. Recent studies have found some granite tops to be significant sources.
3) The dust from granite should you scratch it is a silicate which is known carcinogen.
I have recently learned this while looking into granite counter tops and was quite surprised.
That's the biggest load of nonsense I've seen in a while. On the rare occasion granite (or other stone) emits radon it's such a small amount that it's meaningless. The venting in a kitchen or bath is more than adequate to vent out what little radon that may be released by stone counter products.
I also suggest that you do a bit of research-sealed granite is very bacteria resistant and retains less bacteria when cleaned compared to other counter surfaces.
I'd invite you to read a 1999 study that tested common countertop materials.
Hospitality Institute Study
Originally Posted By: From Study
The retention of the E. coli was from most retained to most removed as follows.
1. Laminate
2. Wood
3. Tile
4. Concrete
5. Stainless steel
6. Granite
In other words, sealed granite retained less E. coli when cleaned.
As far as your claim about scratching granite, if you are able to scrape and scratch granite in a manner that actually raises dust then you should install stainless steel. In the 30 or so years we've had stone counters we've never once managed to scratch them.