How to Seal a Driveway
Sealing your driveway is key to preserving its appearance and protecting it from the elements. Follow our guide to ensure a flawless, long-lasting driveway!
Driveways are often overlooked but they are a significant part of your property! Driveways impact everything from curb appeal and home value to safety. Whether your driveway is blacktop - or asphalt - driveway, pavers, or a classic concrete driveway, it is a considerable investment for homeowners. But with time, weather conditions, and the constant grind of everyday use driveway surfaces can start to show some wear and tear. Cracks appear, the color fades, and before you know it, you have a bunch of costly repairs! This is where the power of driveway sealcoating comes in!
This comprehensive guide will walk you through everything you need to know about protecting your driveway surface, whether it is a brand new driveway or one that is just starting to show signs of wear. We will walk you through both asphalt driveway and concrete driveway sealcoating.
Think of sealcoating as an invisible shield for your driveway! Applying a driveway sealer, whether it is a specialized asphalt sealer or a high-performance concrete sealant, creates a strong barrier against the elements, significantly extending the lifespan of your driveway and protecting it from many different threats, including:
Weather: From the scorching heat of the summer sun and its damaging UV rays to the harsh freeze/thaw cycles of winter, your driveway endures constant abuse. Sealcoating acts as a buffer, protecting against cracking, pitting, and other weather-related damage. It also prevents water from seeping into small cracks and expanding during freezes - which leads to potholes. It can also damage the aggregate in asphalt.
Chemicals: Oil stains from leaky vehicles, grease spills from barbecues, and de-icing salts used in winter can corrode your driveway surface. A good sealant acts as a barrier preventing these corrosive substances causing unsightly and damaging sheeting, where the surface of an asphalt driveway starts to peel away in thin layers.
Everyday Life: Traffic, the weight of heavy landscaping equipment, and even just the repetitive act of walking on the surface can all contribute to wear and tear. Sealcoating provides a protective layer that extends the lifespan of your driveway.
The type of driveway surface you have will determine the right sealant. Understanding the fundamental differences between asphalt and concrete is key to making the right choice:
Asphalt Driveway (Blacktop): Asphalt surfaces, often referred to as blacktop, are typically sealed with a coal tar or asphalt emulsion sealer. These specialized sealers are specifically made to protect the aggregate and binder that make up asphalt. This prevents oxidation - which causes the blacktop to turn gray - and water damage. Think of it as a specialized protective coating designed to keep asphalt surfaces looking dark.
Concrete Driveway: Concrete driveways require a different approach. Acrylic sealers are the most common choice. It provides a durable, water-resistant barrier without impacting the concrete's natural appearance. Penetrating sealers are also available, working their magic by soaking into the concrete. This means the concrete maintains its aesthetic appeal while being shielded from damage.
Many homeowners opt for the do it yourself (DIY) approach to driveway sealcoating, especially for smaller driveways. It can be a cost-effective way to maintain your driveway. For larger areas, expansive parking lots, or when there is significant damage like potholes, cracking, or a need for substantial crack repair, professional asphalt sealcoating is often the best choice.
Professionals have the experience as well as expensive and specialized equipment like industrial-grade pressure washers, blowers, and specialized squeegees. Professionals often offer a warranty on their work, giving you peace of mind. They can also handle more complex tasks like crack filling, pothole repair, and even striping if needed. They can also advise you on the best type of sealer for your specific needs.
Proper preparation is absolutely essential for any sealcoating project, whether you are tackling it yourself or hiring a professional crew.
Before you start your project you have to make sure to clean the surface really well. Use a powerful pressure washer to remove all dirt, debris, leaves, oil stains, grease spills, and any loose aggregate. A degreaser may be needed for stubborn oil stains. Allow the driveway surface to dry completely before applying any sealant. This crucial step ensures proper adhesion of the sealer.
Address any small cracks, larger cracks, or even spiderwebbing with a quality crack filler specifically designed for asphalt or concrete. Follow the manufacturer’s instructions meticulously for application and drying time. For significant damage, asphalt repair or even resurfacing might be necessary. You will need to start with a smooth and even surface for the sealer to adhere to.
Potholes require specialized repair. For DIYers tackling smaller potholes, you can buy cold-patch asphalt repair products at home improvement stores. For larger potholes, multiple potholes, or extensive damage that could even mean deeper structural issues, professional asphalt repair is highly recommended. If you take care of potholes quickly, you can prevent further damage!
Whether you are wielding a squeegee for asphalt or a brush for concrete, here are some tips for applying driveway sealer like a pro:
Choosing the Right Day: Sealcoating should be done on a warm, dry day. The best temperatures for this job are those consistently above a certain number of degrees Fahrenheit (carefully check the manufacturer’s instructions for your specific product). Do not begin sealcoating in intense sunlight or when rain is expected within a couple of days. This ensures proper curing of the sealant and prevents it from being washed away.
Even Coverage: Apply the sealer evenly, working in small sections. Strive for a consistent layer across the entire driveway surface - you do not want puddling or thin spots.
Second Coat: For added protection, especially in high-traffic areas or when using a less expensive sealer, you can always apply a second coat of sealant for more protection from the elements. Just make sure you do not start with the second layer until after the first coat has completely dried and cured.
Drying Time: Allow the sealant to dry and cure completely before walking or driving on the driveway. Resist the temptation to rush this step! Follow the manufacturer’s instructions meticulously for recommended drying and curing times. Rushing this crucial step can lead to tire marks, damage to the sealant, and ultimately, a reduced lifespan for your newly sealed driveway.
Tools needed for this project if you are doing it yourself include pails of sealer, crack filler, degreaser, brushes, and squeegees.
Once your driveway is sealed and looking its best, proper maintenance is key to maximizing its lifespan and protecting your investment for years to come. Keep your driveway clean by regularly sweeping or using a blower to remove dirt, leaves, and any other debris. Grime can degrade the sealer over time.
Plan to reseal your driveway every few years depending on weather conditions, traffic, and the quality of the sealant. This will maintain the protective barrier, and extend the life of your driveway. Resealing is a smart investment of your time and money towards the future of your property.
Generally, resealing every 2-3 years is a good rule of thumb, but this can vary depending on the factors mentioned above. Consult with a professional or check the sealant manufacturer’s recommendations for more specific guidance.
Yes, you can seal a new driveway, but it is essential to allow the new asphalt or concrete to cure for a specified period before sealing. This allows the material to fully set and harden. Check with the manufacturer or your paving contractor for their specific recommendations.
The cost of driveway sealcoating varies depending on several factors, including the size of your driveway (measured in square feet), the type and quality of sealant used (acrylic, coal tar, asphalt emulsion, etc.), and whether you choose to hire a professional or tackle the project yourself. Get quotes from several reputable contractors so that you can compare costs. If you are making this a DIY project, factor in the cost of all materials (pails of sealer, crack filler, degreaser, brushes, squeegees, etc.).
Driveway Guides
Driveway Guides
Driveway Guides
