Outdoor Surface Cleaning Blog

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Why Seal Your Concrete?

Concrete is one of the commonly used materials for outdoor surfaces. It’s strong and can last a long time if properly maintained. Unfortunately, we at Renew Crew find that a lot of homeowners aren’t taking care of their concrete driveways, walkways and patios properly. They aren’t sealing their concrete.

Whenever we come out to a property to pressure wash concrete, we make sure to finish the job by applying a protectant to the surface. For those people who have ever wondered why it is important to seal your concrete, here the answer:

Concrete, although strong, is very porous. Without some type of sealant, concrete absorbs whatever settles on its surface, leading to unattractive stains. Some of the most common stains are engine oils and fluids, hard water stains and rust. Those stains, even when power washed, can be permanent.

Acid rain, according to the EPA, affects large parts of the U.S. While it has adverse affects on many parts of the environment, it also affects concrete surfaces. It not only dissolves colors in the concrete, it also erodes it. Concrete normally has a smooth finish, but if acid rain penetrates the surface, it will begin to fall apart and crumble.

Rain and ice can cause damage to your driveways, walkways and patios if the concrete is not sealed properly. When rain falls on concrete, it can settle into the material if there is nothing protecting it. Overtime, that can cause erosion, but it becomes a larger problem if the rain then freezes to ice, expanding. The water expands and takes up more space as it freezes, leading to unnecessary cracking. And don’t think about putting any deicing chemicals on it, because that can damage the concrete as well.

Have you ever seen patios or walkways that have weeds and grass growing in the cracks? That happens more frequently when the concrete isn’t sealed.

At Renew Crew, it is often the aesthetics of the concrete that spurs the call. Over the years, dirt, grime, sand and everything else will embed into unprotected concrete, which makes it look bad. Luckily, our outdoor cleaning can get your spaces looking like new again.

Protecting and sealing concrete is a necessary step in outdoor and home maintenance. If you ever have a pressure washing company come out to your property to clean your concrete, make sure that they will also seal it. If it isn’t sealed, you will need to have it cleaned, and replaced, more often.

If you have any questions, please contact your local Renew Crew office.