deteriorating material and beveling the edges down and outward with a cold chisel.
Sweep or vacuum the debris and thoroughly dampen the repair area. Do not allow any
water to pool, however.
Here, a fast-setting cement repair product with acrylic fortifier is being used. Trowel
the product into the crack, overfilling slightly. With the edge of the trowel, trim the
excess material and feather it so it is smooth and the texture matches the surrounding
surface.
HOWTO PATCH A SMALL HOLE
portable drill (or use a hammer and stone chisel). The cuts should bevel about 15°
away from the center of the damaged area. Chisel out any loose concrete within the
repair area. Always wear gloves and eye protection.
Pack the material in with a trowel, allowing it to crown slightly above the surrounding
surface. Then, feather the edges so the repair is smooth and flat. Protect the repair
from foot traffic for at least one day and from vehicle traffic for three days.
HOWTO PATCH A LARGE HOLE
Use a hammer and chisel or a heavy floor scraper to remove all material that is
loose or shows any deterioration. Thoroughly clean the area with a hose and nozzle or
a pressure washer.
OPTION: Make beveled cuts around the perimeter of the repair area with a circular
saw and masonry-cutting blade. The bevels should slant down and away from the
damage to create a “key” for the repair material.
Mix concrete patching compound according to the manufacturer’s instructions, and
then trowel it neatly into the damage area, which should be dampened before the
patching material is placed. Overfill the damage area slightly.
Smooth and feather the repair with a steel trowel so it is even with the surrounding
concrete surface. Finish the surface of the repair material to blend with the existing
surface. For example, use a whisk broom to recreate a broomed finish. Protect the
repair from foot traffic for at least one day and from vehicle traffic for three days.
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