A portion of the driveway slopes and allows a lot of runoff toward a
dirt plot/flower garden that abuts the house. The plan was to have an
extruded asphalt curb at the edge of said driveway portion, to allow
water to channel its way down the curb to the steeper driveway slope
away from house.
However, no paving contractor wants to touch the job because it's too
small and we don't know the first thing about using a curbing machine.
Nor have we ever worked with rebars and "forms."
Lowe's sells concrete blocks 4x8x16". Suppose we were to line up
these blocks in the dirt at the point where the driveway contacts the
dirt, and then slathered either asphalt (sakrete?) or cement against
the concrete blocks, higher than the existing blacktop but of course
lower than the top of the 8" blocks. Wouldn't the blocks serve as a
wall for a "poor man's" curb, or do you foresee problems? Thanks,
Let's get a few terms clarified.
Asphalt is black with stones in it. There are packaged asphalt
repair products available.
Sakcrete, Quickcrete, packaged cement mixes are grey with stones
Rebar is used with concrete. Rebar is not used with asphalt.
What is your driveway made of?
Packaged asphalt is difficult to stack up as a curb, it is very
prone to leveling itself. It is surprisingly good at bonding to
existing surfaces. I don't think it would work well for what you
are trying to do.
Concrete needs forms. Its survival and looks are very dependent
on depth and execution. Concrete is not good at bonding to
existing surfaces. It is labor intensive.
The regular stretcher blocks will not work as you describe. You
could buy bond beam blocks - these are the same blocks, but the
webs are cut down 1/2 way to break out. This would allow you to
install long #5 rebar through the tops of all the blocks. You
will need to trap the bottom of the blocks against your driveway
edge or pin them to the driveway with short rebar pins. You could
then pour sakcrete to completely fill the blocks trapping the
rebar for strength. For a slightly more decorative top, you could
glue down a patio block cap.
The project can also be done with "garden wall" blocks. Check
Keep the whole world singing . . . .
DanG (remove the sevens)
How long is the desired curb? Unless it is pretty long, you could simply
drill a hole every foot or so at the edge of driveway, and drive short
pieces of rebar into those holes, leaving an inch or two sticking up. This
will anchor your poured in place curb. Put up a form at the front and
back, then pour the curb. A bit of work, but nothing difficult. Should be
an easy weekend project with the exception of hauling around those bags of
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