Asphalt sealcoating in Redmond, WA protects your pavement's surface from water, UV exposure, and the wear that leads to cracking and potholes down the road. This service is for property owners with asphalt driveways or parking lots that are still in good shape but starting to look faded, or that haven't been sealed in the past 2-3 years. A properly sealed surface is what actually determines whether your asphalt lasts its full lifespan or starts breaking down early.
What This Service Involves
This starts with cleaning the surface and filling any existing cracks, then applying a protective sealcoat that shields the asphalt from water intrusion, oil and gas spills, and sun damage. Skipping regular sealcoating is the root cause of most premature asphalt failure, not the quality of the original installation.
When Needed
Common signs: asphalt that's starting to look faded or gray, fine surface cracks forming, or a driveway/lot that hasn't been sealed in the past 2-3 years. It's also needed after fresh asphalt cures (typically 60-90 days after installation) as part of routine maintenance.
Why Problems Happen
Redmond's frequent rain and UV exposure both break down unprotected asphalt over time — water seeps into tiny surface cracks and erodes the base from within, while sun exposure dries out and oxidizes the asphalt binder, making it brittle. This is the same underlying issue affecting pavement across the area — sealcoating just determines whether the surface is protected against it or left exposed.
What Affects Cost
Lot size, current surface condition (light maintenance seal versus a surface needing crack repair first), site accessibility, and how much prep work is required before sealing all factor in.
What to Expect
A light, well-maintained surface can often be sealed in a single visit, but heavily cracked or oxidized asphalt usually needs crack sealing and cleaning first — sealing over damage without addressing it just means the same problems return sooner.
Frequently Asked Questions
How often should asphalt be sealcoated?
Most asphalt should be resealed every 2-3 years, though high-traffic commercial lots may need it more often and lightly-used residential driveways can sometimes stretch to 3-4 years. The right interval depends on traffic, sun exposure, and how the surface is holding up — we can recommend a schedule specific to your property.
How long does a properly sealcoated surface last?
The sealcoat layer itself typically lasts 2-3 years before it needs reapplying. But its real value compounds over time — a driveway that's consistently sealed on schedule can last significantly longer than one left unprotected, since sealcoating is what prevents the water infiltration and UV damage that cause early base failure.
Do you seal both driveways and parking lots?
Yes — we sealcoat everything from small residential driveways to large commercial parking lots, with equipment and crews sized to match the job.
Can sealcoating be done alongside crack repair?
Yes — in fact, we recommend it. Sealing over active cracks without repairing them first just traps moisture underneath, so we address any cracking as part of the same visit before applying the sealcoat.