Sealing, done when it will actually bond
The cheapest work on this site, and the easiest to do badly.
Keeping water and sunlight out of a surface that still works
Asphalt fails from the top down and from the inside out at the same time. Ultraviolet light breaks down the binder that holds the aggregate together, which is why old pavement goes grey and starts shedding stones. Water gets into the hairline cracks that leaves behind, then freezes, expands and levers those cracks wider — and once water is under the surface it starts working on the base.
A sealcoat is a thin protective layer over the top that slows both processes down. It also does what everyone actually notices, which is take a tired grey driveway back to near black.
The important thing to understand is that sealing is maintenance, not repair. It protects pavement that has not failed. It will not fix a structural problem, it will not bridge a real crack, and spread over a driveway that is already breaking up it simply makes a broken driveway look freshly painted for a few months.
Temperature is not a detail here
Sealer has to cure to bond. That needs at least 55°F and rising when it goes down, and it needs to stay above 50°F for roughly 48 hours afterwards. It also needs a dry window — rain on uncured sealer takes the coat straight off the driveway and into the storm drain.
In Frederick County that rules out a decent slice of the year, and it particularly rules out the late-autumn window when a lot of people start thinking about it. If somebody offers to seal your driveway on a 45°F November afternoon, they are selling you a coat that will not stick. We would rather book you into spring.
Prep matters just as much. Sealer bonds to clean pavement, not to dirt, moss, leaf silt or an oil patch, so the surface gets cleaned first and any oil-stained areas treated. Cracks get filled before sealing rather than sealed over — see repairs and crack filling, which is usually the same visit.
- Surface cleaned before anything is applied
- Cracks filled first, not coated over
- Oil spots treated so the sealer will hold
- Applied at 55°F and rising, in a dry window
- Edges cut in cleanly against grass and concrete
- Clear guidance on when to drive on it again
Less often than you are told
Sealcoating is the service most likely to be sold to people who do not need it yet, usually by whoever is knocking on doors that week with leftover material. A driveway that is genuinely still in good condition does not need doing every single year, and over-sealing builds up layers that can crack and peel on their own.
The sensible rhythm is to seal a new driveway once it has fully cured — not straight away — and then again when the surface starts looking dry and grey and losing its tight texture, rather than on a fixed calendar. When we come out we will tell you if the honest answer is "not yet", and that is a perfectly normal outcome of the visit.
Ask whether yours is ready
Send us the size of the driveway and roughly when it was last done, or just say you are not sure. Sealing is often combined with crack filling in one visit, which is the version that actually extends the life of the pavement.