On Jun 12, 11:00*am, infiniteMPG wrote:
Our house was built in the early 80's. *The "style" in the area was
the corners of the garage, the section wall on the front of the house,
and the light post near the front door were all done with this rustic
quarry rock that was concreted right to the block wall. *We're looking
at some redesigns but this was one of the sticky points.

We were wondering since it's rock concreted to concrete block, if we
try to remove the rocks will we end up destroying the underlying block
as the concrete used to hold the rock on might be stronger then the
concrete of the blocks themselves?

Anyone got any hints or tricks for doing this?

I would suggest trying a small (Hilti TE-54 or smaller) variable speed
electric hammer

(one that has rotary hammer & hammer only settings)

in hammer only mode with a flat wide (2" to 4") chisel blade.

Use "little hammer" setting & gently chisel under rocks at a very flat
angle.

They should pop right off & you should be able to get rid of the
majority of the cement / mortar that adheres them. Finish off with
angle grinder & a cupped diamond disc.

Mortar / cement has relativley low bond / tensile strength so "wedging
it off" will work.

If the block is sound you should be able to remove the rock with
virtually no damage to the block.

If the stone was set with metal ties you'll have to be a little more
careful but it will still be doable. Use a 4.5" angle to attack the
ties as they become accessible.

How many sq ft?


cheers
Bob