Concrete Sealing: Protect Your Sidewalks and Patios from Cracks & Stains

Written By Josh Lombardo-Bottema

Concrete is strong—but it’s not invincible. Over time, unsealed concrete can become a magnet for moisture, mold, oil stains, and cracks. In Ontario’s climate, sealing your concrete surfaces is a non-negotiable.

What Happens Without Sealing?

  • Water Damage: Freezing water expands in the pores of concrete, causing flaking and cracks.

  • Salt & Stains: De-icing salts and car fluids soak in, leaving permanent marks.

  • Mold & Mildew: Moisture-rich surfaces foster green or black mildew growth.

Benefits of Concrete Sealing

  • Stain Resistance

  • Moisture Repellence

  • Longer Lifespan & Easier Cleaning

  • Enhanced Curb Appeal

GSP’s Concrete Sealing Difference

We use deep-penetrating commercial-grade sealers that:

  • Protect without altering the colour (but it does enhance it!)

  • Work on exposed aggregate, stamped, and plain concrete

  • Are applied by trained professionals

Ideal sealing time? Dry, warm months like May to September.

Josh Lombardo-Bottema
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