How to Make Thin Repairs to Damaged Concrete with QUIKRETE®

Making thin repairs to damaged concrete.
Over time and exposure to the elements, exterior
concrete can become worn or develop surface scaling and cracks.
With proper attention to surface preparation and material selection, durable repairs can be made to the
damaged area, extending the life of the concrete. The first step in achieving a successful
concrete repair is proper surface preparation. A solid,
clean surface is necessary so that the repair material
can permanently bond to the damaged area. It is extremely important to remove any unsound or flaking concrete from the repair area. This could be done using a hammer and
chisel or with a masonry grinding disc and a portable drill. When working with
cement-based products, always wear eye protection and waterproof gloves. Once the unsound concrete is removed, the
surface should be cleaned of any loose material, dirt, oil and grease, prior to the
application of repair material. Using QUIKRETE Concrete & Asphalt Cleaner, scrub and clean the surface of the
repair area with a stiff bristle brush. Concrete & Asphalt Cleaner is a
concentrated detergent that is effective and safe for use on
any concrete, asphalt, paver, brick, masonry and stone
surface. It can be used in full strength for
heavy duty cleaning or diluted for general cleaning. Thoroughly rinse the repair area after
cleaning. QUIKRETE concrete repair products are
designed and formulated for specific repair applications. For thin repairs to small areas with
a chipped or damaged surface, QUIKRETE Vinyl Concrete Patcher or QUIKRETE Concrete Patching Compound are recommended. QUIKRETE Vinyl Concrete Patcher is a
cement-based repair material that is enhanced with a special exterior grade
polymer resin that has strong bonding properties. Vinyl
Concrete Patcher can be applied from one-quarter inch down to a feather edge. To mix Vinyl
Concrete Patcher, add about 10 ounces of water per five
pounds of material. The dry mix should be added into the mixing water. The proper water ratio is an important
factor in achieving a successful repair. The more water that is added during the
mixing process, the weaker the bond strength and compressive strength
will be. Using a margin trowel, mix the Vinyl
Concrete Patcher for 3 to 5 minutes. After a lump-free consistency is achieved, allow the mix to sit, undisturbed, for
about five minutes. This will provide time for the polymer
to fully activate. Prior to applying, stir the Vinyl
Concrete Patcher once more. Additional water may be added in small
amounts to achieve a putty consistency. Dampen the repair area with water. Enough water should be used to saturate the surface. Although, any standing water should be removed. Vinyl Concrete Patcher should be built
up in layers, using a margin trowel. The first layer should be pressed into
the repair area, using firm trowel pressure. Smooth the surface of the patch so that
it is level with the surrounding concrete. Avoid adding water to the surface of the
patch. The additional water can cause surface color inconsistencies and a weakened surface. The repair area
should be protected from foot traffic for 24 hours and vehicle traffic for at
least three days. For non-structural, small, aesthetic repairs
to concrete, QUIKRETE Concrete Patching Compound is an
easy to use alternative. Concrete Patching Compound is a pre-mixed, ready to use acrylic latex formula that
blends with the color and texture of the surrounding concrete. Use a margin
trowel or putty knife to thoroughly stir Concrete Patching Compound, before
applying it to a clean, dry concrete surface spread and texture
the concrete patch to match the surrounding concrete. Wet the trowel to achieve a smooth
finish. For patches or cracks over one-quarter inch thick, Concrete
Patching Compound should be applied in multiple layers, allowing each layer to dry before
applying the next. Concrete Patching Compound will begin to
form a skin in about 20 to 40 minutes and will
harden completely in one to two hours, depending on the temperature, humidity and
patch depth. Concrete Patching Compound should only
be applied when temperatures are between 50 and 90 degrees.

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