Exposure to harsh elements can cause porous concrete surfaces to be damaged over time. This raises the question: Is sealing concrete necessary for exterior surfaces?

Whether it's driveways, sidewalks, or garages, sealing concrete surfaces is a surefire way to make your exterior surfaces durable and stand the test of time. By sealing concrete surfaces, homeowners can safeguard their investments while reducing the need for costly repairs and replacements.

Explore where concrete sealing is applicable, the benefits it provides, and whether concrete sealing is necessary to maintain the longevity and appearance of your outdoor concrete structures.

Sealing Exterior Concrete: What It's All About?

Concrete sealing is the process of applying a protective coating to concrete surfaces to shield them from damage caused by moisture, chemicals, oil, and weathering. This protective layer helps prevent staining, discolouration, chemical damage, cracks, spalling, and other forms of deterioration.

It involves stripping off any old sealant, if there is any, from the surface of the concrete and preparing it for a new coat. The new sealant is applied section by section and brushed into the surface to ensure full coverage. This meticulous process helps to lock the sealant in place, ensuring long-lasting protection.

Sealing concrete surfaces typically utilises specialised sealant products that form a protective layer on the surface of the concrete. These sealers can be classified into different types based on their composition and desired outcome, including epoxy sealants, silicon-based sealants, and many more.

On What Exterior Surfaces Is Concrete Sealing Necessary?

Let's explore some common exterior areas where sealing concrete is particularly necessary.

A. Driveways

Driveways endure heavy vehicle traffic, exposure to oil leaks, and constant weather changes. Sealing the driveway surface helps protect against stains, cracks, and surface deterioration caused by these factors.

B. Patios

Patios are often subjected to foot traffic, furniture placement, and exposure to the elements. Sealing the concrete safeguards patio surfaces against moisture penetration and UV damage.

C. Sidewalks

Sidewalks are high-traffic areas exposed to pedestrian activity and environmental elements. Sealing concrete sidewalks helps prevent surface wear, cracking, and staining caused by foot traffic and exposure to debris, and dirt. It also reduces the risk of trip hazards. 

D. Pool Decks

Pool decks are constantly exposed to water, chlorine, and sunlight, making them prone to discolouration, erosion, and surface degradation. Sealing concrete pool decks creates a protective barrier that prevents water absorption and chemical damage.

E. Garage Floors

Garage floors are susceptible to oil spills, vehicle fluids, and heavy loads, leading to stains, cracks, and surface deterioration. Sealing the concrete garage floor provides resistance against these contaminants.

Is Concrete Sealing Necessary?

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