Asphalt Sealer: A Practical Guide for Pavement Maintenance
Asphalt Sealer is a pavement-maintenance material applied to suitable asphalt surfaces to help protect the pavement from moisture, oxidation, weather exposure, and everyday wear. When used as part of a planned maintenance program, sealing treatments can help preserve the existing pavement surface and maintain its appearance and serviceability.
For contractors, choosing the right asphalt sealer is only one part of the process. Surface condition, preparation, application method, weather, equipment, and existing cracks should also be considered before starting a project.
What Is Asphalt Sealer?
Asphalt sealer is a protective material used on asphalt pavement to create a surface treatment that helps limit exposure to environmental elements.
Depending on the product and application, asphalt sealing may help:
- Reduce moisture penetration
- Protect the pavement surface
- Slow oxidation-related deterioration
- Improve pavement appearance
- Seal minor surface imperfections
- Support preventive pavement maintenance
The exact benefits depend on the type of sealer, pavement condition, climate, traffic, and application procedure.
The Federal Highway Administration identifies surface treatments and crack sealing among the maintenance and preservation approaches used for asphalt pavements.
Why Is Asphalt Sealing Important?
Asphalt pavement is exposed to water, sunlight, temperature changes, traffic, and other environmental conditions throughout its service life. Without appropriate maintenance, these factors can contribute to aging and surface deterioration.
A planned asphalt maintenance program can help address pavement problems before they become more extensive.
Asphalt sealing can be one component of that strategy when the pavement is suitable for the treatment.
What Does Asphalt Sealer Protect Against?
The exact performance depends on the formulation, but an appropriate sealing treatment can help protect asphalt from common environmental exposure.
Potential concerns include:
- Water infiltration
- Oxidation
- Sun and weather exposure
- Surface aging
- Loss of surface appearance
- Minor surface deterioration
However, asphalt sealer does not repair structural pavement failures. Deep potholes, severe rutting, extensive alligator cracking, base failures, and other major defects may require corrective or structural repairs before a surface treatment is considered.
When Should You Apply Asphalt Sealer?
Timing is an important consideration for contractors.
Before applying an asphalt sealer, evaluate:
- Pavement condition
- Existing cracks
- Surface cleanliness
- Weather conditions
- Pavement temperature
- Moisture
- Expected traffic
- Product-specific requirements
Applying a sealer to unsuitable or poorly prepared pavement can produce inconsistent results.
The pavement should generally be evaluated and prepared according to the sealer manufacturer's application requirements. Contractors should also follow local specifications when working on commercial or municipal projects.
How Should Asphalt Pavement Be Prepared Before Sealing?
Surface preparation is one of the most important steps in a successful asphalt sealing project.
A typical preparation process may include:
- Inspect the pavement.
- Identify cracks, joints, potholes, and other defects.
- Remove dirt and loose debris.
- Clean cracks that require sealing.
- Complete suitable crack repairs.
- Allow the surface to meet the required moisture conditions.
- Mask or protect areas that should not receive sealer.
- Apply the asphalt sealer according to product instructions.
Proper preparation helps the sealer contact the pavement consistently.
Why Is Crack Cleaning Important Before Asphalt Sealing?
Cracks should be evaluated separately from the surface-sealing process.
Loose material, vegetation, dust, and old debris can interfere with crack-sealing work. Contractors may use wire wheels for crack cleaning to mechanically remove loose material and vegetation from suitable asphalt cracks before applying crack-sealing products.
A typical crack-preparation process may involve:
- Mechanical cleaning
- Removal of loose debris
- Vegetation removal
- Air cleaning where appropriate
- Inspection of the prepared crack
- Application of a compatible crack-sealing material
This distinction is important because asphalt sealer is not a substitute for proper crack repair.
What Equipment Is Used to Apply Asphalt Sealer?
The required equipment depends on the product, project size, and application method.
Professional contractors may use:
- Spray systems
- Squeegees
- Brushes
- Agitators
- Pumps
- Hoses
- Filters
- Spray tips
- Mixing equipment
- Crack-cleaning equipment
For spray applications, selecting the correct spray components can help maintain consistent material distribution.
Ceramic sealcoating spray tips can be useful for contractors looking for durable spray components for professional sealcoating equipment. The correct tip should always be selected based on the spray system, material, pressure, and desired application pattern.
How Do Spray Tips Affect Asphalt Sealer Application?
Spray tips control how material exits the application system. A worn, clogged, or incorrectly sized tip can affect spray pattern and material distribution.
Before selecting spray components, contractors should consider:
- Spray tip size
- Spray angle
- Operating pressure
- Material viscosity
- Flow requirements
- Equipment compatibility
- Desired coverage
Regular inspection and cleaning can help maintain consistent application performance.
For contractors using spray equipment regularly, keeping replacement ceramic sealcoating spray tips available can also help reduce downtime when worn components need to be replaced.
How Should Cracks and Joints Be Addressed?
Cracks and joints should be evaluated before the main sealing operation.
For suitable pavement cracks, contractors may use crack-sealing materials designed specifically for that purpose. Where appropriate, asphalt joint sealing tape can provide a preformed sealing option for suitable joints and pavement repair applications.
The correct product depends on:
- Joint or crack dimensions
- Pavement condition
- Expected movement
- Installation method
- Traffic conditions
- Product specifications
A surface sealer should not be expected to correct cracks or structural pavement failures that require separate repair.
Asphalt Sealer vs. Crack Sealer
Although the terms can sound similar, asphalt sealer and crack sealer serve different purposes.
|
Treatment |
Primary Purpose |
|
Asphalt sealer |
Surface protection and pavement maintenance |
|
Crack sealer |
Sealing suitable pavement cracks |
|
Asphalt joint sealing tape |
Sealing suitable joints or cracks with a preformed material |
|
Crack-cleaning wire wheel |
Preparing cracks by removing loose debris and contaminants |
Using the correct treatment for the specific pavement problem helps contractors avoid relying on one product for applications it was not designed to handle.
What Should Buyers Consider When Choosing Asphalt Sealer?
Contractors should evaluate the product based on the project rather than choosing solely on price.
Important buying considerations include:
- Pavement condition
- Sealer formulation
- Application method
- Coverage requirements
- Drying or curing requirements
- Climate and weather
- Traffic conditions
- Equipment compatibility
- Manufacturer recommendations
- Project specifications
For larger commercial projects, contractors should also consider material availability, equipment productivity, labor requirements, and expected maintenance schedules.
Common Asphalt Sealing Mistakes to Avoid
Several avoidable problems can affect sealing performance.
Contractors should avoid:
- Applying sealer to poorly prepared pavement
- Ignoring existing cracks
- Sealing over loose debris
- Applying during unsuitable weather
- Using incompatible equipment
- Applying excessive material
- Ignoring product-specific application instructions
- Allowing traffic before the treatment is ready
- Treating structural pavement failures as surface-sealing problems
The Asphalt Institute notes that application quantity and conditions should be based on factors such as surface texture, dryness, and pavement condition, and that excessive application can create performance issues.
Professional Asphalt Maintenance Products from Sealcoating Supply Pro
Sealcoating Supply Pro supplies professional asphalt maintenance and sealcoating equipment for contractors working on demanding pavement projects.
The company's product range includes:
- Ceramic sealcoating spray tips
- Wire wheels for crack cleaning
- Asphalt joint sealing tape
- Spray and sealcoating equipment
- Pavement maintenance accessories
- Asphalt repair tools
With more than 50 years of combined industry experience, Sealcoating Supply Pro focuses on durable, contractor-oriented products designed to support reliable pavement maintenance work. Its product range includes Made-in-USA products for professional applications.
Why Choose the Right Asphalt Maintenance Equipment?
Asphalt sealer performance depends on more than the material itself. Equipment condition and preparation methods can have a direct effect on application consistency.
For example, a contractor may need:
Wire wheels for crack cleaning → to prepare suitable cracks before sealing.
Asphalt joint sealing tape → to address suitable joints or crack-sealing applications.
Ceramic sealcoating spray tips → to support consistent spray application when compatible with the equipment and material.
Using the right component for each stage helps create a more organized and predictable pavement-maintenance process.
Key Takeaway
Asphalt sealer is a surface-maintenance treatment that can help protect suitable asphalt pavement from environmental exposure and support long-term pavement preservation.
However, successful sealing requires more than choosing a sealer. Contractors should inspect the pavement, clean the surface, address suitable cracks and joints, use compatible equipment, and follow the product manufacturer's application requirements.
For professional projects, a complete maintenance approach may include wire wheels for crack cleaning, asphalt joint sealing tape, and ceramic sealcoating spray tips alongside the appropriate asphalt sealer.
Final Thoughts
A well-planned asphalt maintenance program considers the pavement condition before selecting a treatment. Asphalt sealer can be an effective component of pavement preservation when used on suitable surfaces and applied according to the manufacturer's requirements.
For contractors, proper preparation is equally important. Cleaning cracks with appropriate wire wheels for crack cleaning, addressing suitable joints with asphalt joint sealing tape, and maintaining application equipment with quality ceramic sealcoating spray tips can all support a more consistent workflow.
Sealcoating Supply Pro provides professional asphalt maintenance products designed to help contractors prepare, maintain, and protect pavement with dependable equipment and repair solutions.
Looking for professional asphalt maintenance products? Explore Sealcoating Supply Pro's selection of spray tips, crack-cleaning wire wheels, asphalt joint sealing tape, and related contractor equipment to prepare for your next pavement-maintenance project.