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Protect your driveway with professional asphalt sealcoating in Saint Louis, MO. We clean, crack fill, and apply a quality sealer that shields against water, oil, and UV damage. Regular maintenance keeps your asphalt looking fresh and helps prevent costly repairs.
Precision Asphalt St. Louis provides professional asphalt sealcoating throughout Saint Louis, MO, Missouri and the surrounding area. Our licensed, insured crew delivers safe, clean, on-time work with a free estimate before anything begins. Call (314) 333-7779 or request your free quote.
Asphalt Sealcoating & Crack Filling for St. Louis Properties
Precision Asphalt St. Louis provides asphalt sealcoating and crack filling tailored to the conditions and property types found throughout the St. Louis metro area. From older driveways in South City brick neighborhoods to large parking lots in Maryland Heights and Fenton, we match materials and methods to the age and use of your pavement.
Our focus is simple: slow down deterioration, improve curb appeal, and prevent small surface problems from turning into base failures that require full replacement. In the St. Louis climate, with hot summers, freeze-thaw cycles, and frequent de-icing salts, asphalt that is not sealed and maintained typically fails much faster than it should.
On this page, we explain how our sealcoating and crack repair process actually works, how we estimate cost, what options you have as a property owner, and what you should expect before, during, and after the job.
How Asphalt Sealcoating Protects Your Pavement in St. Louis
Sealcoating is a protective coating applied to the surface of existing asphalt. It is not a cosmetic paint. When applied correctly, it shields your driveway or parking lot from UV sunlight, water penetration, de-icing chemicals, and automotive fluids.
In St. Louis, asphalt often dries out and oxidizes within a few years because of intense summer sun and wide temperature swings. Oxidized asphalt turns gray, becomes brittle, and starts to ravel at the edges. Sealcoating slows this oxidation by blocking UV exposure and locking in the asphalt binders.
Sealcoat also reduces water infiltration. In our region, water that seeps into unprotected cracks will freeze in winter and expand, which widens the cracks and can lead to potholes and base failures. A well-bonded sealcoat layer, paired with proper crack filling ahead of time, helps shed water from the surface instead of letting it soak into the pavement.
An added benefit many commercial property managers in places like Florissant and O’Fallon appreciate is appearance. A deep black, even finish improves how a shopping center or office park looks to customers and tenants. It also improves line striping visibility at night and during rain.
Our Step-by-Step Sealcoating & Crack Filling Process
Precision Asphalt St. Louis follows a structured process so the sealcoat adheres and lasts. Cutting corners in prep work is what causes most peels and premature wear.
1) Site inspection and planning: We inspect the pavement for structural failures, drainage issues, oil saturation, and previous coating layers. On older St. Louis alleys and driveways, we often find a mix of original asphalt and patchwork. We document areas that need patching before sealcoating and identify active cracks that need different treatments.
2) Mechanical cleaning: We use power blowers and steel wire brooms to remove dirt, sand, leaves, and loose aggregate. In commercial lots, we may add power sweeping or pressure washing in high-traffic or trash-heavy areas. Clean, dry pavement is essential for sealcoat to bond.
3) Oil and grease treatment: Parking areas in front of auto shops, restaurants, or older multi-family buildings tend to have oil spots. We apply an oil spot primer or special sealer, scrub it in, and allow proper curing. If this step is skipped, those areas often peel first.
4) Crack routing and cleaning (if needed): For larger cracks, we may mechanically rout or open them slightly to create clean vertical walls, then clean them with compressed air. This helps the crack filler penetrate and bond, which is important for cracks that move with seasonal expansion and contraction.
5) Crack filling: We use hot-applied rubberized crack sealants for most mainline cracks in parking lots and drive lanes, and high-quality cold pour products for smaller residential cracks or tight areas where heat kettles are not practical. The material is applied slightly overfilled and then smoothed to create a flexible, waterproof seal that moves with the pavement.
6) Edge taping and protection: Around concrete curbs, pavers, structures, and garage doors, we either hand cut with brushes or tape as needed to create a clean edge and avoid overspray.
7) Sealcoat application: We typically apply sealer in two coats. On larger lots, we use spray equipment combined with squeegee machines, which helps drive the material into the surface and then smooth it. On residential driveways, we often use squeegee or brush application near buildings and landscaping for better control.
8) Curing and opening to traffic: Depending on temperature, humidity, and sun, we usually recommend 24 to 48 hours before regular vehicle traffic. In shaded streets of older St. Louis neighborhoods, cure times may run longer than in open commercial sites, and we schedule accordingly.
Materials We Use and Options You Can Choose
Not all sealcoat and crack fillers are the same. Precision Asphalt St. Louis selects products based on pavement age, traffic level, and local conditions.
For sealcoating, we use refined tar or asphalt emulsion based sealers, depending on the setting and environmental requirements. Many commercial and municipal properties in Missouri now prefer asphalt emulsion sealers because they have lower odor and a different environmental profile. For high traffic areas like fast food drive-thrus and industrial yards, we may recommend a more robust, sand-loaded mix that provides better skid resistance and thickness.
We typically mix the sealer with water, sand, and additives to match manufacturer specifications. Sand and certain additives improve traction, help hide minor surface imperfections, and extend wear. On steep residential driveways in places like Eureka or Wildwood, a sand-loaded mix can significantly improve grip in wet or icy conditions.
For crack filling, we deploy hot rubberized crack sealant for working cracks that open and close with the seasons, and specialized cold pour sealants for smaller, non-working cracks and tight residential spaces. On heavily cracked but still structurally sound surfaces, we may recommend a comprehensive crack sealing program before sealcoating, which can be more cost effective than repeated patching.
We discuss these options with you and explain why one product is better suited to your pavement than another so you know exactly what is being installed on your property.
What Affects Cost for Asphalt Sealcoating in St. Louis
Pricing is more than a simple cost per square foot. When Precision Asphalt St. Louis prepares a proposal, we look at several specific factors that influence your final price.
Surface area and layout: A straightforward, open parking lot in Chesterfield is faster and more efficient to seal than a tight, cut-up lot with islands and curves in University City. More hand work and edging increases labor time.
Condition of the asphalt: A relatively smooth, newer surface may only need light crack filling and standard sealer. An older driveway in Tower Grove with extensive cracking, raveling, and previous coatings may require more crack sealant, patching, and sometimes primer coats. Each of these extra steps affects cost but also extends the life of the surface.
Crack density and size: The amount and width of cracks directly affect the quantity of crack filler needed and the time to apply it. A lot with a network of interconnected cracks will cost more to treat than a surface with only a few isolated cracks.
Access and traffic control: Large commercial properties often require phasing, barricades, and specific off hours to keep businesses open. Night or weekend work, detailed traffic control plans, and multiple mobilizations are reflected in the pricing but also minimize disruption to your operations.
Material choices: Enhanced sealer blends, additional coats, or heavy sand-loading add material cost but can be a smart investment for high-traffic or high-visibility areas. We provide options and explain the payback so you can choose what fits your budget and maintenance goals.
Common Pavement Problems We See Locally and How We Address Them
St. Louis pavements share some recurring problems because of our climate, soils, and property ages.
Alligator cracking: In many older North City and inner ring suburb lots, we see areas of alligator or spiderweb cracking. Sealcoating alone will not fix these since the base is failing. In these areas, we usually recommend cutting and patching or full-depth replacement before we sealcoat the surrounding pavement.
Settling near downspouts and dumpsters: At multi-family buildings and restaurants, water and heavy loads often create depressions near downspouts or dumpster pads. If water stands after rain, we correct these structural issues separately before sealcoating, otherwise the coating will wear quickly.
Reflective cracking along joints: On streets and drives built over older concrete or utility trenches, cracks often follow straight lines. We target these with hot rubberized crack filling before sealcoating to keep water out of the joints and slow the reflection of cracks through the surface.
Previous failed coatings: Some St. Louis driveways have been coated with low quality products, like paint-like coatings or driveway store kits that peel and flake. We identify these and, when needed, remove loose material and use bonding agents or primers so the new professional grade sealcoat bonds properly.
Salt and plow damage: Commercial lots plowed and salted heavily, especially near entrances and handicap stalls, often have surface raveling and scraped areas. We may recommend localized patching, heavier sand load in the sealer, and a maintenance schedule that considers snow and ice management.
What to Expect When You Hire Precision Asphalt St. Louis
We focus on clear communication before and during your sealcoating and crack filling project so you know exactly what will happen and when.
Before the job, we walk the property with you, mark repair areas, and define traffic patterns and phases so businesses and residents keep access. For residential driveways, we coordinate around your schedule and provide written instructions for moving vehicles and protecting the fresh surface.
On the day of work, our crew arrives with all equipment and materials, sets up cones and tape, and confirms which areas will be closed. We handle all surface prep, crack filling, and sealing as outlined in your proposal, and we keep you updated if we uncover hidden issues such as soft base or severe oil damage.
After application, we post clear reopening times and provide simple care instructions. These usually include avoiding sharp turns by stationary steering, not placing heavy items like dumpsters or trailers on the new surface immediately, and keeping lawn sprinklers off the area until it fully cures.
For commercial clients, we often develop a multi-year maintenance plan that coordinates sealcoating, crack sealing, and periodic patching. This helps extend pavement life and spreads costs out instead of facing a sudden full replacement.
If you are in St. Louis, St. Charles, Jefferson, or surrounding counties, Precision Asphalt St. Louis is ready to inspect your asphalt and put together a sealcoating and crack filling plan that matches your property, traffic, and budget.
