Concrete Sealer Protects and Preserves
is an excellent way to protect raw concrete from
weathering and aging. Concrete is a low cost,
durable, and versatile building material but it
needs treatment to prevent damage from water and
Because concrete is extremely porous, water
penetration will critically weaken it by
re-dissolving the dried alkaline lime that is part
of the concrete mixture. The water will gradually
damage the integrity of the concrete by causing it
to soften, crack, and flake. Applying a concrete
sealer protects and preserves the concrete.
In areas where there is ice and bitter winters, the
freeze and thaw action is the major cause of
concrete damage, gradually eroding the surface and
weakening its structural integrity. Water collects
and gathers in small cracks and fissures in the
concrete and expands as it freezes and turns into
ice. These cracks slowly widen, eventually causing
it to chip and flake, exposing a fresh surface that
once again comes under attack in a never ending
Any exposed concrete will become unsightly due to
its porosity. Any water soluble substance will
permeate into the pores of the concrete causing it
to stain, leaving a permanent discoloration. As an
example, a rusty watering can or barbeque grill
left on a concrete patio will stain it and the
discoloration penetrates too deeply for it to be
removed by a pressure washer or cleaning chemicals.
Concrete repair or replacing damaged concrete is a
laborious and expensive task that can be costly in
terms of materials and labor. Removing the old
concrete is difficult, time consuming and will
always weaken the remaining structure. Patching
over old concrete with new concrete doesn’t work
well at all.
Concrete sealant is an effective way to stop
concrete deterioration from weathering and water
water base solvent concrete sealer is very
effective in preserving concrete. These concrete
sealers are relatively inexpensive, easy to apply
and form and effective barrier against the
There are two main types of concrete sealer, ones
that penetrate the concrete and concrete sealants
that form a surface film. The non penetrating
concrete sealants are a little cheaper but the
protective barrier will wear away over time and is
not recommended where there is heavy traffic. It is
more cost effective to spend extra money and
purchase a penetrating sealer which is much more
resistant to physical damage.
Acrylic concrete sealers are the cheapest option.
They form a barrier on the surface of the concrete.
Acrylic resins are easy to apply and add shine to
the concrete finish. The main disadvantage is that
acrylic resins are soft and easily damaged causing
them to deteriorate in one to five years.
The film formed by acrylic sealants is completely
impervious, so the concrete must be completely dry
before the sealant is applied and it is not
suitable for concrete that allows water to
penetrate from the opposite side. Acrylic and epoxy
concrete sealants have a shiny and polished finish.
Epoxy concrete sealers provide an exceptionally
strong and resilient finish and are perfect in
areas that are subject to heavy use such as
driveways and garage floors. Epoxy concrete sealant
is expensive to buy and is completely impervious so
the concrete must be thoroughly cleaned and
completely dry before applying to prevent dirt /
oil or trapped moisture from causing damage. A
drawback to using epoxy sealants is that they
generate toxic and flammable fumes. Care must be
taken during the application process.
Concrete sealants are available in a wide variety
of colors and textures either in a gloss or satin
finish. A colored concrete sealer can make any
concrete surface a beautiful work of art. They are
commonly used on garage and basement floors and can
be applied as a DIY project.
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