How often should you reseal an exposed aggregate or brushed concrete driveway in Moncton to protect it from salt and freeze-thaw damage?

In Moncton's harsh Maritime climate, you should reseal an exposed aggregate or brushed concrete driveway every 2-3 years to maintain protection against salt damage and freeze-thaw cycles. This frequency is more aggressive than recommendations for milder climates, but New Brunswick's 150+ annual freeze-thaw cycles and heavy winter salt use make regular sealing essential for long-term durability.

Why Moncton driveways need frequent sealing: The Greater Moncton area experiences some of the most punishing concrete conditions in Atlantic Canada. Winter temperatures regularly cycle above and below freezing from November through April, forcing water into concrete pores where it freezes, expands by 9%, and creates microscopic cracks. Municipal road salt and homeowner de-icing compounds compound this damage by lowering the freezing point and creating additional freeze-thaw cycles at the concrete surface. Salt-laden slush from Moncton streets splashes onto driveways throughout winter, and without proper sealing, this chloride penetration accelerates surface deterioration.

Sealer type matters significantly in Moncton's conditions. Use a penetrating silane/siloxane sealer ($40-$80 per gallon) rather than topical acrylic sealers. Penetrating sealers soak into the concrete matrix and repel water without creating a surface film that can peel or flake under freeze-thaw stress. Acrylic sealers may look good initially but often fail within one winter in Maritime conditions, leaving the concrete more vulnerable than before sealing. Quality penetrating sealers like Prosoco Consolideck LS or similar products designed for freeze-thaw climates will maintain protection for 2-3 years even under Moncton's aggressive conditions.

Application timing is critical for effectiveness. Apply sealer during warm, dry weather between May and September when concrete temperatures are above 10°C and no rain is forecast for 24-48 hours. The concrete surface must be completely clean and dry — power wash to remove dirt, oil stains, and any previous sealer residue, then allow 2-3 days of dry weather before application. Never apply sealer to damp concrete or when temperatures will drop below 4°C within 24 hours, as this prevents proper penetration and bonding.

Signs your driveway needs resealing include water absorption rather than beading on the surface, visible salt staining or white efflorescence, minor surface scaling or spalling, and darkening of the concrete when wet. Don't wait for significant damage — preventive sealing every 2-3 years costs $200-$600 for a typical Moncton driveway but prevents $4,000-$8,000 replacement costs down the road.

Professional application versus DIY: Sealing is a manageable DIY project for most homeowners. Clean the surface thoroughly, choose a quality penetrating sealer designed for freeze-thaw climates, and apply with a pump sprayer or roller following manufacturer coverage rates (typically 150-300 square feet per gallon). However, if your driveway shows existing damage, has oil stains, or was previously sealed with an incompatible product, professional preparation and application may be worth the investment.

Need help finding a professional concrete contractor for sealing or driveway assessment? New Brunswick Concrete can match you with experienced local professionals who understand Moncton's specific climate challenges and use proven products for Maritime conditions.