What a Cape Seal Is

A cape seal is a chip seal followed by a slurry or microsurface so the loose chip look is covered. The chips add texture and binder. The slurry locks them and smooths the ride. It is a surface treatment, not inches of hot mix.

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Two treatments in a set order

A cape seal starts with a chip seal and follows with a slurry or a microsurface. The first step places binder and stone. The second covers the loose chip look, locks the stones, and smooths the ride. You are buying a pair of surface treatments, not a single coat of driveway sealer and not a lift of hot mix. The quote should say both steps, in that order. If it only says cape and stops, ask which chip and which slurry or microsurface will follow, and how much time sits between them. Sweeping and traffic control matter while the chips are fresh, before the cover goes on. That is the crew's work, not a weekend plan to spray binder yourself.

What each layer is doing

The chips add a little texture and a binder-rich layer that can seal small surface cracks on pavement that is still stable. The slurry or microsurface locks those chips so traffic is not throwing stone, and it gives a tighter face. Together they change the surface. They do not add a compacted thickness you should enter as inches of hot mix. Do not convert a cape seal into tons with the 145 pounds per cubic foot formula and pretend you bought an overlay. If the quote also includes hot mix, that is a separate line with its own inches, and the plant ticket is the real weight of that mix. Ask the bidder to keep the cape seal quantities in their own units, not disguised as asphalt tons.

Sound pavement, or the cape is a costume

A cape seal is still a surface treatment on sound pavement. If the base is pumping or the mat is alligator cracked through, covering it with chips and slurry hides the pattern until the movement returns. Look at the cracks and the drainage before you accept the treatment. Ask what sweeping happens after the chip step and who controls traffic while stones are loose. Fresh chips and open binder are a windshield and a tracking problem. The quote should say who sweeps and when cars can return. Application rates for the binder belong on the contractor's bid as their means and methods. You do not need those rates as a do it yourself recipe, and you should not spray chip-seal binder from a home tank.

A practical sequence

Ask the quote to list the chip seal and the slurry or microsurface as two steps.
Ask who sweeps loose stone and who handles traffic while the chips are fresh.
Treat the cape seal as surface work on stable pavement.
Keep any hot mix tons on a separate line with the plant ticket as the real weight.

The mistake to skip

Counting a cape seal as inches of hot mix because the finished surface looks black and new.

Questions people ask

Is a cape seal the same as chip seal?

A cape seal is a chip seal followed by slurry or microsurface so the loose chip look gets covered. The chips add texture and binder. The cover locks them and smooths the ride. It is one system with two steps. Ask the quote to name both. It is still not a thickness of hot mix asphalt.

Should I spray the binder myself to save a step?

Chip-seal binder is a crew application with traffic control and a cover aggregate timed to that spray. A cape seal adds another layer after the chips. Read the quote for what the contractor will do. Do not turn their rates into a home spraying project. Sweeping and cure time belong in their plan, and the pavement under the treatment still has to be stable.

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