Sealcoating in Kansas City, MO

Sealcoating puts a thin protective layer over asphalt that has already cured. It slows the drying and graying that sun causes, helps keep water and oil from soaking into the surface, and restores a uniform dark finish. It does not fix broken pavement, fill potholes or add strength. Cracks are filled first and failed areas are patched first; sealer goes on last.

When to seal

New asphalt should not be sealed right away. HomeGuide's advice is to give fresh asphalt three to six months to cure first. After that, guides give reseal intervals from roughly every 2 years to every 10, depending on the sealer, the climate and traffic. A home driveway in Kansas City often lands somewhere in the middle; a busy commercial lot needs it more often. If water no longer darkens the surface and the aggregate is starting to show, it is time.

Weather matters here

HomeGuide lists 50 to 95 degrees and dry conditions as the application window, and fast-dry products need it warmer and less humid. Kansas City has a long humid summer and a freeze window that averages late October to early April, so sealcoating is a late spring to early fall job. We check the forecast for rain in the hours after application, because a shower on fresh sealer washes it off.

Sealer types

The two common sealer families are refined coal tar and asphalt emulsion. HomeGuide notes that coal tar resists gasoline and oil well but that many areas have banned it over health and groundwater concerns, while asphalt emulsion is considered more environmentally friendly but stains more easily from oil and fuel. Your quote names the product we plan to use, and we can talk through the tradeoffs.

Preparing the surface

Sealer only sticks to clean pavement. We edge grass back from the borders, blow off dirt and debris, scrub or treat oil spots, and fill cracks before coating. Then the sealer is applied in even coats, with edges done by hand so it does not end up on your concrete, siding or landscaping. Plan on keeping vehicles off for a day or more; HomeGuide gives 12 to 72 hours before driving.

Commercial lots

Lots are usually coated in halves or zones to keep customers parking, with crack work done beforehand and restriping afterward, because the coating hides the old lines. Drive lanes and entrances wear through first, so some owners have those areas coated twice. We plan the order and the closures with you before the work is scheduled.