Yes, you should seal your concrete driveway in Australia to protect it from harsh UV, stains (oil, grease), and water damage (especially in colder regions like Melbourne or Tasmania where freeze-thaw cycles occur), which extends its life, prevents cracking, and makes it easier to clean, enhancing its appearance and value. It's a crucial maintenance step to prevent long-term, costly repairs.
One of the main benefits of sealing your driveway is that it will help protect the concrete from weather damage. Over time, exposure to the sun and rain can cause the concrete to crack and crumble. By sealing the concrete, you will create a barrier that will help prolong your driveway's life.
There are a few drawbacks to asphalt sealcoating. First, sealcoating is a process that must be maintained over time in order to see continued results. This means having your driveway or asphalt parking lot re-sealed every 2-3 years.
Because of all the use your driveway gets, it's important to protect and preserve it. Sealing your concrete driveway with a high-quality sealer is crucial not only for protection against the damage done by freeze-thaw cycles, but also against premature deterioration from salt, oil, and more.
When To Apply Pavement Sealer. Pavement sealer is generally applied from April 1st to October 31st. This is because manufacturers specifications call for temperatures of 50 degrees and rising.
The best time to sealcoat your driveway is during summer when the temperature is above 50 degrees Fahrenheit. It's not advisable to seal coat in the winter as the colder season will negatively affect the performance of the sealer. The sealer may not bond with the asphalt or will not cure correctly.
Sealcoating Temperature Requirements
The industry standard calls for minimum temperatures of 50 degrees Fahrenheit or more at the time of application. During the first 48 hours after application, temperatures must stay above 50 degrees continuously to allow proper curing.
Concrete sealers have disadvantages like creating slippery surfaces, requiring frequent reapplication (maintenance cost), potentially discoloring or staining, trapping moisture (causing blisters), and using harsh chemicals (VOCs), with application issues like bubbling arising from poor preparation or wrong product choice. While offering protection, the cost, labor, and upkeep for maintaining the desired look can be significant drawbacks for homeowners.
The average cost of concrete sealing is $1,500 for a 1,000-square-foot area, and most pay from $1,350 to $3,500. A gallon of sealer covers up to 300 square feet, and acrylic sealer is the lowest-cost at $16 to $75 per gallon.
Unsealed concrete is highly vulnerable to cracking, spalling, staining, and moisture damage, all of which can shorten its lifespan significantly. Whether you opt for sealing or alternative protective measures, taking action now can prevent costly repairs down the road.
Better Materials: Commercial-grade sealers last longer and provide better protection than most DIY products. Time-Saving: A pro crew can prep and seal your driveway in a fraction of the time—often within a single day.
The lifespan of sealcoating can vary depending on several factors, including climate, traffic volume, and the quality of the sealcoat application. Generally, a properly applied sealcoat can last anywhere from 2 to 5 years.
Myth #2 – “Sealcoating Fills Existing Cracks”
Sealcoat is a protective layer, not a crack filler. It slows water intrusion and UV damage, but cracks must be cleaned and filled first. In fact, studies by the Pavement Co-operative Research Program show that untreated cracks can widen 50% in just one freeze-thaw cycle.
5 Disadvantages of Sealing Your Driveway
When Is It Too Late to Seal a Driveway? The ideal time to seal a driveway is before significant cracking or deterioration occurs. If your driveway shows advanced wear, consult a Sherwin Williams specialist for recommendations on repair products before sealing.
Yes, you can skim concrete over existing concrete for resurfacing, often using a thin concrete overlay or microcement, but success depends heavily on proper surface prep: thoroughly clean the old concrete, repair cracks, and apply a strong bonding agent to ensure the new layer adheres well and lasts, preventing issues like peeling or cracking. Skim coating, also called micro-topping, provides a new, updated look for floors, patios, and even vertical surfaces.
Late winter, early spring, and fall offer the most suitable conditions for sealing concrete in the Southeast, with temperatures ranging from 50° F to 80° F (10° C to 27° C). Sealing your concrete during this time allows for proper curing and maximum protection.
One of the primary factors affecting sealcoating costs is the size of the asphalt surface. Larger areas require more sealcoat material. Whether you're maintaining a small residential driveway or a large commercial parking lot, the total square footage.
You can also apply a sealer that has a concrete stain included for a new look to your driveway. Remember to wear splash-resistant goggles and chemical-resistant gloves when applying the sealer. Newer concrete might already have a sealer that's still in good condition.
Longevity: With proper maintenance, polyurethane sealers can last 5-10 years or more. Aesthetic Options: They come in various finishes, including high-gloss and satin.
5 Signs Your Concrete Needs to Be Sealed (and Why It Matters)
Peeling is caused by sealcoating not bonding to oil spots or any other surface contaminants like dirt, grease, etc. or oxidized pavements. Prior to sealcoating application, the pavement surface shall be thoroughly cleaned, oil spots be treated with an oil spot primer.
The best time to seal coat your asphalt driveway is during the fall, between September and November. Seal coating should not be done when temperatures are below 55 degrees Fahrenheit or above 90 degrees Fahrenheit.
Why Winter Isn't Ideal Winter is generally not recommended for sealing concrete. Cold temperatures and high moisture levels can prevent the sealant from curing properly, leading to a weak bond and reduced protection. Challenges: Freezing temperatures can cause cracking during application.
If rain hits 12 hours after sealing your driveway, the sealant may not have cured properly—leading to peeling, water streaks, and uneven textures. While minor damage can be fixed with touch-ups, severe issues might require full resealing. Proper curing takes 24–48 hours, so avoid sealing if rain is in the forecast.