The Concrete sealing Geelong provides ongoing protection. Just like you do regular painting at your home. Similarly, it is important for you to seal the concrete routinely to protect the concrete surface and driveways from moisture so that it has a lasting life.
But sometimes, during the Concrete Sealing Geelong process, problems can arise due to various reasons. And these problems can arouse frustration for concrete contractors. When the concrete sealing floor does not look or work as expected, the cause behind the problem can be traced back to over-application, which means that the sealer was applied in non-ideal conditions.
Listing down some of
the common sealer issues that concrete contractors may face, why these issues
occur, and how they can be avoided.
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Sealer Bubbled
The presence of bubbles
in the sealer usually happens due to the heavy application of the sealer. The outgassing from the concrete floors during the application of sealers should be
able to move through the thin and wet sealer film quickly. How to explain
thin? With a coverage rate of 300 square
feet per gallon, a single coat of sealer should be almost 5 mils thick when
wet. When it dries up, it should be about 2 miles thick. IF the concrete sealer
is applied heavily, the air that is displaced from the surface won't get enough
space to escape. Therefore it forms a bubble in the concrete sealer surface.
One of the other
reasons why bubbles occur on the sealed surface is that when the application is
done in hot weather or if the concrete surface is under the direct sun. In such
conditions, the sealer will “skin over “ and turn dry on the surface before the
solvent evaporates. The pressure of the solvent when trying to evaporate will
lead to the formation of bubbles in the concrete sealer surface. Therefore it
is suggested to apply the sealers during the coolest time of the day, which is
usually night when there is no direct sun.
●
Solvent-based sealer turned white, is peeling or is flaking off
There are two main
contributors to the “blushing” or to the whitening of the concrete sealer. The first one is the application to the wet
or fresh concrete surface that still has bleed water. When this happens, the sealer will not bond
with the concrete surface and will be going to float on the trapped film of the
water. Another reason could be the
application of thick layers. Heavy coats of the sealer, or a build-up of
multiple layers of the sealer over the several layers, will allow moisture to
get trapped inside the layers, and thus it will allow the sealer to lose its
adhesion from the concrete. When this happens, the moisture and the air trapped
under the debonded sealer have a refractive index that the sealers start to
appear white to the human eyes. During this, the sealer will start peeling and
flaking off the surface. To avoid such problems, it is therefore advised to
hire the best concrete contractors that are experienced and trained.
●
The Water-based sealers are white or powdery
The process of drying
water-based sealers is said to be very complicated and is also significantly
affected by the humidity and temperature of the environment during the process
of application. The water-based acrylic
sealers are dried with a process known as coalescence, in which the water and
the coalescing solvent evaporates and fuses together the particles of acrylic
to form the sealer film. If the temperature during the process is too low or
the humidity is too high. In that case, the coalescing solvent will start
evaporating even before the water evaporates, and the sealer will start drying
out white or powdery because the latex particles did not fuse together.
Therefore it is always
suggested to apply the sealer in the right temperature and humidity conditions
that are required for successful applications.
●
Sealer is stained from leaves, oil, tires, fertilizers, and more.
Most of the concrete
sealers are made with acrylic polymers that do not offer exceptional stain or
chemical resistance to the concrete. If you want a more durable and chemical
and stain resistant surface. In that case, it is best to either have an epoxy
coating or a urethane coating surface and make sure that the coating
application is perfect for exterior use before applying it to the outdoor
concrete.
●
The concrete is dark and blotchy after the sealer is applied
Most of the acrylic
sealers are designed in such a way that they darken the concrete surface and
leave a glossy finish up to the extent that gives the concrete surface a “wet
look.” A sealer is used to deepen the
true color of the concrete and is going to highlight all the differences in the
texture of the surface that comes due to finish or floating. The concrete sealing
Geelong also brings out the
grains in concrete just like the varnish does for a wood. If you are concerned
about the changing color after the sealing. In that case, it is suggested that
you should either use a penetrating water repellent sealer or can also do a
small application test for the film-forming sealer to make sure the change
color will be accepted.
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