Should Concrete Be Sealed After Cleaning?
Yes, sealing your concrete surfaces after a professional cleaning by Drift Exteriors is one of the most effective ways to protect your investment. While cleaning removes surface dirt and contaminants, sealing acts as a crucial barrier that prevents future damage and extends the lifespan of your driveways, patios, and walkways.
How Concrete Sealers Work
Concrete sealers generally fall into two categories: penetrating sealers and film-forming sealers. Penetrating sealers soak into the pores of the concrete, creating a chemical bond that repels water and oil without altering the surface's natural look. Film-forming sealers sit on top of the surface, creating a protective shield that adds a matte or glossy sheen while blocking moisture and stains. Depending on your needs, our experts at Drift Exteriors can help you choose the best option for your specific surface.
Why Sealing Is Essential for Colorado Homeowners
Colorado's climate is notoriously harsh on concrete. The combination of intense high-altitude UV radiation and drastic temperature fluctuations puts constant stress on porous materials. Sealing is essential to prevent several common issues:
- Freeze-Thaw Spalling: When water enters the pores of concrete and freezes, it expands, causing the surface to crack or flake off. A high-quality sealer prevents water penetration, stopping this cycle of destruction.
- De-icing Salt Damage: In Denver, salt is a necessity for safety, but it is corrosive to concrete. Sealing creates a barrier that prevents salts from leaching into the material.
- Stain Resistance: Whether it is oil drips from your car or spilled beverages on your patio, sealed concrete prevents these liquids from penetrating deep into the substrate, making future cleanup much easier.
- UV Fading: Intense Colorado sun can cause concrete to look washed out and aged prematurely. Sealers help maintain the structural integrity and aesthetic color of your pavers and slabs.
Colorado Pro Tip: Always have your concrete professionally cleaned and sealed before the first heavy frost of the year. Ensuring your surfaces are moisture-free and protected before winter hits is the best defense against long-term surface scaling and cracking caused by our unpredictable mountain climate.
When Is Sealing Worth It?
Sealing is highly recommended for high-traffic or high-exposure areas. If you have a concrete driveway, a backyard patio, or a pool deck, the cost of sealing is minor compared to the cost of replacing damaged concrete. However, if you have a non-porous decorative surface or an area that never sees moisture or foot traffic, sealing may not be necessary. Generally, we recommend having your surfaces resealed every two to five years, depending on the exposure level and the type of sealer applied. By maintaining a regular maintenance schedule, you ensure your exterior surfaces remain both beautiful and durable for years to come.
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