Outdoor concrete surfaces such as driveways, patios, and footpaths endure constant exposure to the elements. Over time, they can suffer from cracking, staining, fading, and general wear, especially in a city like Geelong where the weather shifts from intense summer sun to heavy winter rains. Concrete sealing is a simple yet highly effective way to protect and enhance these surfaces so they will last longer while maintaining their appearance.
In this guide, we’ll explore everything homeowners need to know about concrete sealing, from its benefits and recommended frequency to whether a DIY approach is worth considering.
1. What is Concrete Sealing?
Concrete sealing involves applying a protective coating to an outdoor concrete surface to help repel water, oil, stains, and UV damage. It helps prevent cracking and erosion caused by exposure to the elements. There are two main types of concrete sealers:
- Penetrating sealers absorb into the concrete, forming a barrier that protects from within. These are ideal for driveways and pathways since they preserve the natural look while offering long-term protection. If you’re looking for high-quality options, check out these On-Crete penetrating sealers.
- Topical sealers form a protective layer on the surface which enhances stain resistance and offers an optional glossy or matte finish. These are usually used on decorative concrete and patios.
Given Geelong’s climate, penetrating sealers are often the best choice since they provide long-lasting protection against moisture and UV exposure without altering the look of the concrete, unless of course, you wish to alter the look of your concrete surface in which case topical sealers would be a good option.
2. Is Concrete Sealing Necessary?
While concrete sealing is not required per say, it’s highly recommended because of the constant exposure to environmental factors. The region’s winter rains can lead to moisture penetration, increasing the risk of cracking and erosion. In summer, strong UV exposure can cause unsealed concrete to fade particularly in decorative finishes like exposed aggregate.
Homes near the coast including areas like Corio, Ocean Grove, Torquay, and Barwon Heads face salt damage which can weaken the concrete surface over time. Sealing also makes maintenance easier as it prevents stains from oil, grease, and tree tannins. If you want your driveway, patio, or footpath to remain in top condition for years, sealing is a simple and smart investment.
3. What are the Benefits of Concrete Sealing?
Concrete sealing offers a range of benefits in Geelong’s variable climate. Here’s why it’s a smart investment:
Extends Lifespan
Sealed concrete is far more resistant to cracking, erosion, and weather-related damage. By preventing moisture from seeping into the surface, sealing also helps slow down wear and tear, keeping driveways, patios, and footpaths in top condition for longer.
Reduces Maintenance
Unsealed concrete absorbs oil, dirt, and stains, making it difficult to clean. A sealed surface repels these contaminants which means less scrubbing and fewer costly cleaning products to maintain its appearance.
Prevents UV Damage
Geelong’s strong summer sun can cause unsealed concrete to fade and weaken over time. Sealing provides a protective barrier against UV rays, reducing colour loss and preventing surface degradation.
Enhances Appearance
Sealers can enhance the look of exposed aggregate or decorative concrete by deepening colours and adding a stain, matte, or glossy finish. Whether you want to maintain a natural appearance or achieve a sleek, polished look, the right sealer can help.
Resists Staining
From oil leaks on driveways to BBQ grease on patios, stains can ruin the look of outdoor concrete. Sealing prevents these substances from soaking in, making spills easier to wipe away before they cause permanent damage.
4. How to Seal Concrete?
Sealing concrete involves several steps to ensure proper adhesion, durability, and long-lasting protection. While the process is straightforward, preparation is important for the best results:
Clean the Surface
Before applying a sealer, the concrete must be thoroughly cleaned to remove dirt, oil, stains, and any previous coatings. A pressure washer and a degreaser are often needed for driveways and high-traffic areas. Any leftover debris can prevent the sealer from bonding properly.
Allow the Concrete to Dry
Moisture trapped in the concrete can interfere with the sealer’s effectiveness. After cleaning, it’s essential to let the surface dry completely usually for 24 to 48 hours depending on weather conditions. Applying sealer to damp concrete can result in poor adhesion and uneven finish.
Choose the Right Sealer
Different types of sealers are suited for different surfaces and conditions. Penetrating sealers are best for driveways and pathways for deep protection without changing the look. Topical sealers work well with decorative concrete which offers stain resistance.
Apply the Sealer Evenly
Sealers can be applied using a roller, brush, or sprayer. Even coverage is important to avoid patchy areas or over-application which can lead to a cloudy or slippery surface. Two thin coats are usually recommended instead of one thick layer. But the exact application method and number of coats will depend on the sealer that you use, so always follows the specific manufacturers product guidelines.
Allow Proper Curing Time
Once applied, the sealer needs time to cure before the surface is used. Just like concrete curing times, curing times for sealers vary based on the ambient air temperature, humidity and general weather conditions in addition to the specific characteristics of the product but most sealers require at least 24 hours before light foot traffic and up to 72 hours before vehicle use. Rushing this step can compromise the sealer’s performance.
5. How Often Should You Seal Outdoor Concrete?
The frequency of resealing depends on several factors including traffic levels, exposure to weather, and type of sealer used. Sealing a concrete driveway typically needs to be done every two to four years, while patios and pathways may last five years or more before requiring another coat
Areas exposed to harsh weather such as heavy rain, high UV rays, or salty air may need more frequent resealing. A good way to test whether resealing is needed is by pouring water on the surface. If it soaks in immediately rather than beading up, it’s time for another coat of sealer.
6. What Factors Affect How Long a Sealer Lasts?
The lifespan of a concrete sealer depends on several key factors. While some sealers can last over five years, others may need reapplication sooner. Here are the main factors that influence durability:
Quality of the Sealer
Higher-quality sealers provide better protection and last longer. Professional-grade penetrating sealers can remain effective for 5+ years while lower-end acrylic sealers may need to be reapplied annually. Investing in a premium product can save time and money in the long run.
Exposure to Weather Conditions
Exposure to Geelong’s climate plays a big role in how long a sealer lasts. Heavy rain, strong UV exposure, and salt air can accelerate wear. Sections of concrete that are under cover or partially sheltered will naturally be better protected from the elements and therefore require less frequent sealing compared to concrete completely exposed to the elements.
Traffic and Usage
High-traffic areas such as driveways and footpaths wear down faster than patios or less frequently used surfaces. Vehicle pressure, foot traffic, and exposure to oil or chemicals cause the sealer to degrade faster, requiring more frequent application.
Preparation and Application
A properly applied sealer lasts longer than one applied incorrectly. If the concrete is not cleaned or dried properly before sealing, adhesion issues can lead to premature wear. Even application, correct drying times, and using the right number of coats all contribute to the sealer’s durability.
Type of Sealer Used
Different sealers have different lifespans. Penetrating sealers that soak into concrete tend to last longer than topical sealers that sit on the surface. If long-term protection is the goal, a penetrating sealer is usually the best choice for driveways and pathways compared to topical sealers.
7. Can All Types of Outdoor Concrete Be Sealed?
Yes, almost all outdoor concrete surfaces can and should be sealed to protect them from weather damage, staining, and wear. Whether it’s a standard concrete driveway, an exposed aggregate pathway, or a decorative concrete patio, sealing helps extend its lifespan and maintain its appearance.
Driveways benefit from sealing the most as they typically under the greatest stress in terms of load and exposure to the natural elements and therefore are prone to moisture absorption and cracking over time Even decorative concrete like stamped or coloured finishes should be sealed to prevent fading and enhance its visual appeal. For pool surrounds, sealing helps reduce water absorption and prevents algae growth which not only keeps your poolside concrete lo
8. Is Concrete Sealing a DIY Job or Should You Hire a Professional?
Sealing concrete is a task that many homeowners consider doing themselves but whether it’s a good idea depends on the size of the job and the type of surface being sealed. For small areas like patios or garden pathways, a DIY approach can be cost-effective if you have the right tools and follow the correct preparation steps. However, applying a sealer evenly can be tricky and using the wrong product or technique may result in patchy coverage, bubbling, or peeling.
For larger projects or if you don’t have the tools, time or interest in doing the job yourself, hiring a professional is often the better choice. The pros use strong pressure washers and degreasers to ensure the surface is perfectly primed for the sealer. They use professional-grade sealers and specialised application equipment to ensure a smooth, durable finish that holds up to heavy use and exposure to the elements. If longevity, aesthetics, and minimal maintenance are priorities, investing in professional sealing is well worth considering.
9. How Much Does it Cost to Have Concrete Sealed by a Professional?
While the cost of professional concrete sealing varies, it typically ranges from $300 to $500 for a small patio and $800 to $1,500 for larger or more complex surfaces.
Conclusion
Sealing your outdoor concrete surfaces in Geelong is a smart investment that enhances durability, reduces maintenance, and keeps your concrete surfaces looking its best. With the region’s mix of heavy rain, coastal salt exposure, and strong UV rays, unsealed concrete is more prone to cracking, fading, and staining. Whether you have a standard concrete driveway, exposed aggregate pathway, or decorative patio, applying a quality sealer helps protect your surface from the elements and extends its lifespan. While some smaller projects can be a DIY job, professional sealing ensures even application and long-lasting results, especially for high-traffic areas.
