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The Stegmeier Corporation of Arlington, Texas, makes
a plastic joint for creating control joints. It is cut
to length and pressed into the wet concrete. Then the
tape on top of the joint is peeled off to expose a clean
surface. These plastic joints have a water seal to keep
out non-compactable solids like sand.
Slip Resistance
Slip resistance is an important consideration when
choosing a texture. 'Don't use a tight trowel finish
on a pool deck," McMahon says. "A typical
broom finish is tough enough to prevent slippage."
Wennersten sometimes uses exposed aggregate with rounded
natural some. He also recommends a shark grip additive
fine aggregates added to the sealer for a rougher finish
Progressive Concrete Works is just introducing Actacrete,
a finishing process that can be used to bring out fine
aggregates, resulting in a sandy texture and color "One
of our most popular applications for this right now
is to simulate a beach. It tics in really well with
the surrounding landscape," Wennersten says.
Ralston says, "The two textures we promote for
anti-slip are a Tom Ralston Victorian Swirl where we
create raised swirls with a circular motion of a flat
trowel during the last pass on the deck, or a sand finish.
Sometimes a light sandblast finish is chosen. but this
adds approximately $3 per square foot.
Thorne explains that both texture and sealer impact
slip resistance. "Most imprinted, sandblasted,
float-finished, broom-finished surfaces are fine if
applied correctly. It does not take much texture to
develop enough resistance to minimize slipping. The
real key is to retain that texture and not fill it in
with the sealer. This is where the acrylic-modified
urethanes really perform. The dry film thickness is
much less than a typical acrylic and will not fill the
texture. High-solids sealers have a tendency to fill
minor surface changes these can become very smooth.
When water covers these smooth areas your foot can hydroplane.
If you chose a sealer that ends up 3-5 mils thick in
a dry state, Most textures will be retained."
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