Ask Joe: Atlanta’s freeze and cracks forming in my patio

The Cold Snap and Its Impact on Your Untreated Patio

Winter weather can be unpredictable, and when a cold snap hits, your patio could suffer significant damage—especially if it hasn’t been properly treated. Sudden drops in temperature, freezing moisture, and ice accumulation can all take a toll on the surface, leading to costly repairs in the spring.

How a Cold Snap Affects an Untreated Patio

Cracking and Surface Damage
Patios made of concrete, stone, or brick are particularly vulnerable to the freeze-thaw cycle. When moisture seeps into small pores and cracks, it expands as it freezes, causing the material to break apart over time. This can lead to unsightly cracks, chips, and even large structural issues.

Increased Slipperiness
Without a protective sealant, an untreated patio can become dangerously slick when ice forms on its surface. This poses a slipping hazard for you and your guests, making it essential to take precautions before a cold snap sets in.

Erosion and Pitting
Concrete and stone patios are naturally porous, meaning they absorb moisture. If left untreated, ice and repeated freeze-thaw cycles can cause pitting—small holes in the surface that weaken the material. Over time, this leads to accelerated deterioration and an uneven, rough texture.

Discoloration and Staining
Snow, ice, and winter salts can cause discoloration on untreated surfaces. Concrete and stone are particularly susceptible to staining from de-icing chemicals, leading to permanent blemishes that detract from your patio’s aesthetic.

Loose or Shifted Pavers
If your patio consists of pavers or bricks, a cold snap can cause them to shift. When moisture underneath freezes and expands, it can push individual stones out of place, creating an uneven surface that may require re-leveling once the weather warms up.

How to Protect Your Patio from a Cold Snap

• Seal the Surface: Applying a weatherproof sealant before winter will help prevent moisture absorption and protect against freeze-thaw damage.
• Clear Debris and Standing Water: Keep your patio dry and free of leaves, dirt, and other debris that could trap moisture.
• Use Sand Instead of Salt: If you need traction, use sand instead of de-icing salts, which can damage surfaces and lead to long-term deterioration.
• Cover It Up: If possible, cover your patio with a tarp during extreme cold to prevent excess moisture from freezing on the surface.

An untreated patio may seem fine now, but a sudden cold snap can quickly lead to serious damage. Taking preventative steps can help preserve its beauty and functionality for years to come.