Stamped Concrete Fall Care Before Freeze-Up in Ontario

Stamped concrete keeps its colour and pattern the way a deck keeps its stain: with maintenance. Fall is when that maintenance matters most, because the next thing the surface meets is a Southern Ontario winter. Here is what to do now, in order, before the ground freezes.

Why fall is the time to look

Southern Ontario runs concrete through dozens of freeze-thaw cycles a winter. Water gets into the surface, freezes, expands, and pries the top layer apart. On stamped concrete, the colour and the crisp pattern edges sit right at that surface. The sealer is the barrier that keeps water and salt out. If it has worn through, the surface starts drinking water, and that is the damage you want to head off before the freeze, not discover in April.

Step 1: Clean the surface

Sweep off leaves, grit and debris, and clear planters and furniture off the slab, so you can see the whole surface.

Step 2: Check the sealer

The acrylic sealer gives stamped concrete its depth and wears under sun, salt and snow shovels. Plan on resealing every two to three years. A driveway, or anything taking heavy salt, is on the shorter end of that window.

Check it by eye:

• Look at the colour. Faded colour tells you the sealer has stopped protecting it.

If the sealer is due, plan the reseal.

When you reseal, ask for the same anti-slip additive in every coat. Sealed stamped concrete is slippery when wet, and that matters more once autumn rain, leaves and then frost arrive.

Step 3: Look for cracks and chips

Walk the surface once, slowly. A crack that has escaped the control joints, a chipped edge, or a flaking patch lets water in. Stamped concrete is harder to disguise a repair on than a broom finish, so it is worth knowing about now. If you find damage, a free written quote tells you whether it needs a repair or resurfacing or simply a fresh coat of sealer. See also what happens when concrete flakes after winter.

Step 4: Decide your winter plan now

Do not decide at the first icy morning with a bag of rock salt in your hand.

• Sand for grip. Use sand on icy patches rather than salt, especially in the first winter of a new slab.
• Go easy on salt. New decorative concrete is still gaining strength through its first winter, and salt is hardest on it then. After that, use salt sparingly.
• Shovel with care. Snow shovels wear the sealer, so go lightly.

For more on how salt works on concrete and how to keep it off, see protecting concrete from winter salt damage.

If you want the look with less upkeep

If this checklist sounds like more commitment than you want, say so at the quote. Exposed aggregate gives you texture and stone character with less upkeep, and we would rather pour the right surface than the fancier one. Our stamped and decorative concrete page covers patterns, colour and what the sealing schedule looks like. For the full picture, read the guide to stamped concrete in Southern Ontario.

When you are ready to plan a new stamped patio or walkway, or a reseal, a free written quote is where it starts. We do the visit, the measurements and the options, and put a written number in front of you at no charge.