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Hello
I am looking for a good detail for facing the top 3 feet or so of a poured concrete foundation with granite. There are alot of older buildings here with granite foundations and I love the look, but want the benefits of a modern basement.
The house has not been built yet and the front may have 2 feet of foundation exposure vs. 6 inches in back due to the slope of the lot.
Any ideas gratefully accepted.
Thanks,
William Thomas
Replies
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Willam,
Without knowing anything about your granite material (thickness, etc.), I will assume that the granite will be just a veneer (for looks) and not used as a structural material. If this is the case, a standard masonry brick ledge will give the desired effect. For a true granite foundation look, you can cantilever the first floor over the veneer so it projects slighty past the stone, usuall 1"-2", and with proper flashing this detail works nicely. If the stone protrudes past the walls above, the look isn't as nice, and proper flashing becomes a problem. I would suggest finding a local mason who is familiar with the detail, and what exactly you want to do.
Best,
J.R.
*There's also a product I've seen called cultured stone (they have an excellent web sit loaded with info, just don't have the address handy). It's really just a fancy name for a concrete product which is made from molds of real stone. It's light weight and can be plastered directly to the wall without requiring a brick ledge. It also comes in an unbelievable selection of different types and colours. This isn't your 70s era fake rock. You have to look long and hard to prove this isn't the real thing. I'm sure you could find a granite pattern in there somewhere. Being a poured mold product, there's also a large selection of wrap around corner blocks (makes the stone look full depth), ledger stone trim, window keys, etc.I was told the installed cost was only slightly less than real tyndal stone (much less if you install it yourself). But as some would say, there's no substitute for the real thing.
*We have used granite slab (honed or flamed 2-3cm) cut into the desired dimensions for building facades. Check with your local stone supplier to see what type they stock. Flamed is usually much less expensive than honed or polished. Choose your slabs and have the fabricator cut them. Distressing the edges to approximate the look you want is easy to do. You won't need a ledge if you use bonding mortar (epoxy or modified thinset) or mechanical fasteners.
*I've used the cultured stone product before. It really is amazing how much it matches the real thing.Some of the mortorless fieldstones do have a repeating pattern but all others are random. I don't now if they carry a granite. Order their catalog. The pictures are much clearer than that on the web site.
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Hello
I am looking for a good detail for facing the top 3 feet or so of a poured concrete foundation with granite. There are alot of older buildings here with granite foundations and I love the look, but want the benefits of a modern basement.
The house has not been built yet and the front may have 2 feet of foundation exposure vs. 6 inches in back due to the slope of the lot.
Any ideas gratefully accepted.
Thanks,
William Thomas