Why Driveways Fade to Grey — and How to Get the Black Back
Asphalt oxidation explained: why your driveway turns grey, what it means for the asphalt underneath, and how sealcoating restores it.
Grey isn't just cosmetic
That faded grey colour means your asphalt has lost its surface oils to UV, oxygen, and weather. Once those oils are gone, the binder weakens and cracks start spreading.
What's actually happening
Asphalt is held together by bituminous oil binders. UV light, freeze-thaw, and water gradually strip those oils out. The fine aggregate (sand) at the surface gets exposed — that's why it looks grey, sandy, and rough.
What grey driveways feel like
- Sandy or gritty underfoot
- Water soaks in instead of beading
- Surface is rough, not smooth
- Edges are crumbling
- Hairline cracks are spreading
How sealing reverses it
A premium oil-based sealcoat puts oil back into the surface and creates a fresh black protective layer. After sealing:
- Rich black colour returns
- Water beads instead of soaking in
- Surface feels smoother
- Hairline cracks are sealed
- UV protection is restored
Why oil-based works better here
Water-based sealer sits on top like paint. Oil-based chemically integrates with the asphalt, restoring what UV took out — exactly what a faded grey driveway needs.
How long until you see grey again?
- Cheap water-thinned sealer: 6–12 months
- Premium oil-based at full strength: 2–3 years
See the difference
View before/after photos → or get a free quote for your driveway.
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Premium driveway sealing, hot rubber crack filling, and asphalt repair across Barrie & Simcoe County.