My rather large concrete driveway has a lot of cracks and loose pieces.
Assuming that the pieces were properly secured (now that the ground
beneath them has settled for 20 years), is there a way to put a new
surface on top of an existing driveway? My understanding is that a
second layer of concrete has to be a certain thickness to prevent
cracking and to properly adhere to the concrete beneath it. Or, how does
a second layer adhere to a first?
Covering the driveway with asphalt is not an option. If there are other
ideas or suggestions, please offer them. The ground as migrated around
the existing driveway over the years, so raising the height a couple of
inches would not be a big deal.
Funny you asked. I just had mine done yesterday. There's a nationwide
company called Decorative Concrete. They can put a smooth or decorative
finish on your concrete.
Mine had holes, cracks and spawling. First they gave the concrete an acid
wash. Then they powerwashed. After that they applied a milky substance that
the concrete workers call 'milk'. This is like a glue that holds the new
concrete to the old. They spray a primer coat of concrete (you can have it
colored any color you want). When that dries, they spray another coat of
concrete. When dry, the apply two coats of concrete sealer. It came out
terrific and we love it.
Here's their site and you can locate one of their contractors there. Mine
was from Asheville, NC and was fantastic.
Since the base layer of concrete has cracked ANY coating you put over
top WILL ALSO CRACK:(
So top coating is a waste of money unless your trying to pretty it up
If your going to b there for years its far better off to just replace
Not true if done properly. I had my driveway redone in Florida and 15 years
later, when I sold the house the driveway was still good and uncracked. If
the driveway just has hairline cracks they can be fixed. If the driveway is
cracked because it wasn't poured properly, ie: rebar not used, etc., and the
driveway is sinking, nothing can help it except a new driveway.
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