Our concrete driveway in Orleans is spalling badly after just five winters — what are our repair options?

Spalling — where the surface flakes, chips, and pits — is unfortunately common on Ottawa concrete driveways, especially in areas like Orleans where heavy road salt use and our brutal freeze-thaw cycles take a real toll. Your repair options depend on how deep the damage goes.

Surface Spalling (Top 5-10mm)

If the damage is limited to the top layer and the underlying concrete is still solid, a concrete resurfacer or thin overlay can restore the surface. Products designed for this application bond to the existing slab and create a new wear surface roughly 3 to 6mm thick. This costs roughly $4 to $8 per square foot for professional application. The catch is that resurfacing only works if the base concrete is structurally sound — tap the spalled areas with a hammer, and if the concrete underneath sounds solid rather than hollow, resurfacing is viable.

Deeper Spalling and Delamination

When spalling goes deeper than 10mm or you can see aggregate exposed across large sections, the damage has likely reached beyond what a thin overlay can fix. In these cases, contractors will chip out the damaged areas down to solid concrete, apply a bonding agent, and fill with a polymer-modified repair mortar. For a typical two-car driveway with moderate damage, expect $1,500 to $3,500 depending on the extent of repair needed.

Why It Happened After Only Five Years

Five-year spalling almost always points to an installation problem. The most common causes in Ottawa are: insufficient air entrainment in the mix (you need 5-7% for our climate), finishing the surface while bleed water was still present (traps moisture near the surface), inadequate curing during hot summer pours, or applying sealer too soon after pouring. The heavy road salt tracked in from Orleans Boulevard and the 174 corridor accelerates whatever weakness existed from day one.

Prevention Going Forward

After any repair, wait at least 28 days before applying a penetrating silane or siloxane sealer. Reapply every 3 years. Avoid sodium chloride deicers entirely — use sand or calcium magnesium acetate products. Clear snow promptly so meltwater doesn't sit on the surface through repeated freeze-thaw cycles, which in Ottawa can happen dozens of times between November and April.

When Replacement Makes More Sense

If spalling covers more than 30-40% of your driveway surface, full replacement typically offers better long-term value than extensive patching. A new pour with proper air-entrained concrete and correct finishing techniques will outperform a heavily patched surface.

Reach out through Ottawa Driveways to connect with concrete repair specialists who can assess whether your Orleans driveway needs spot repairs, full resurfacing, or replacement.

---

Looking for experienced contractors? The Ottawa Construction Network connects Ottawa homeowners with qualified professionals:

• Luxe Painting and Renovations
• JC Carpentry
• Floor-2-Wall Inc
• The Deck Store Inc
• Dump n Dash Hauling