When it comes to reducing the need for repairs and extending the lifespan of your asphalt driveway, preventative maintenance is always the best option. There are several different methods that you can use in the maintenance of your asphalt driveway, and chip seal is one method that definitely stands out. It is one of the most effective and affordable methods of repairing and maintaining an asphalt driveway that has started to show signs of wear and tear.
If you require driveway repair there are many companies out there that are experts in not only this but also experts in tarmac surfacing. But what exactly is a chip seal repair? And what are the signs that your asphalt driveway is in need of one?
Keep reading to find out.
What is Chip Seal?
Chip seal (also known as pavement sealant) is a preservation technique or treatment that is used to seal and protect an asphalt surface from weathering and the effects of the elements (heat, UV-radiation). Chip seal is a method that is extremely versatile, which means that it can be used on new pavements, for repairs, and as a pavement maintenance option.
Chip seal is a mixture of liquid asphalt emulsion, fine aggregates (gravel, crushed stone), and asphalt cement. In terms of application, chip seal involves a two-step process. A thin layer of asphalt cement (emulsion) and mineral aggregate is first applied to protect the surface of the asphalt. This is known as the priming coat.
After the priming coat, a second coat (sealing coat) composed of a thick layer of asphalt cement and a larger aggregate is then applied. In addition to protecting the asphalt surface from the effects of weathering, chip seals can help repair minor cracks and fill up pores, making your asphalt driveway less susceptible to staining and water penetration.
Why use Chip Seal?
What is it about a chip seal that sets it apart from other maintenance methods like patching, seal coating, and crack filling? Below are some of the reasons why chip seal is an excellent maintenance solution for asphalt driveways.
- Compared to other maintenance methods, chip seal lasts much longer. When done right, a chip seal repair can last for about 7 years.
- It provides more traction and skid resistance due to the stone aggregates giving the asphalt a rougher surface.
- It provides an anti-glare and a reflective surface for wet weather and driving at night.
- It extends the lifespan of the driveway and lowers the cost of maintenance.
- It addresses chips, cracks, and potholes in older asphalt pavements.
Signs That Your Asphalt Driveway Needs a Chip Seal Repair
Below are some of the tell-tale signs that an asphalt driveway needs a chip seal repair.
1. The Asphalt’s Surface is old and Cracked
When an asphalt driveway is first installed, its surface is smooth. This smooth surface can, however, develop cracks over time due to exposure to sunlight and wear and tear from continued use.
In addition to cracks, parts of the driveway’s surface may also become brittle and break off. During the wet season, these cracks may become eroded, leading to the formation of small craters, which can be a risk to safety. Chip seals offer an inexpensive way of filling up these cracks. It also prevents water from penetrating the surface of the driveway.
2. The Asphalt’s Surface is Slippery
When the surface of your asphalt driveway has weathered away through precipitation. It can become slippery, affecting your ability to drive on it. It can also affect the performance of your vehicle in terms of traction and maneuverability. This can be very dangerous as it can cause you to lose control when driving on the asphalt.
Luckily this is a problem that can easily be fixed with a chip seal. The repair will give your asphalt driveway better skid resistance (even when it is wet).
3. The Asphalt Driveway was Newly Constructed
The application of chip seal can extend the lifespan of a newly paved asphalt driveway. It does this by creating a protective layer that prevents oxidation and aging from taking place on the surface. Also, when the asphalt emulsion is applied, it reduces the loss of fine stones (rocks), and the cost of installation is cheaper.
4. The Driveway is Bleeding
Bleeding (also known as flushing) is a problem that is quite common with older asphalt driveways. It is when a shiny and glass-like (reflecting) surface appears on your asphalt driveway. This problem usually results from over-asphalting, and it can lead to poor skid resistance in wet weather. Applying a chip seal on bleeding asphalt can help improve its skid resistance.
5. The Driveway’s Surface is Porous
If the surface of your asphalt driveway has become porous and started to absorb water, it is likely that its pores are filled with debris and dirt. Chip seals can help fix this issue by sealing up the pores and serving as a moisture barrier.
6. The Driveway has Started to Fade
If the characteristic black colour of your asphalt driveway has started to fade, it is a sign that its surface needs protection. A chip seal can protect the surface of your asphalt driveway and keep it from wearing down and losing its colour. It can also help with oil and gasoline stains.
Conclusion
Asphalt is a very durable driveway material, and you can get even more use from it by practicing preventative maintenance. Chip seal is an excellent and cost-effective way of maintaining your asphalt driveway.
If you’ve started to notice any of the signs above, then it is time to give your asphalt driveway a chip seal repair.
Also read: Things to Consider When Choosing The Best Pool Resurfacing Materials
