If you have an asphalt driveway, you should have it sealed every few years. Sealing your driveway can help with the filling of cracks along the driveway surface, and it can protect asphalt from spills and weather damage. If you like to complete home improvement projects on your own, then you can add the sealer yourself. If you intend on doing this, then think about spraying the sealer instead of rolling it or placing it with a squeegee. This will help you to create a much smoother and appealing surface. Keep reading to learn about a few tips that can help you with the spraying process.
Purchase The Right Spray Tip
If you want to spray sealcoating material across your driveway, then you will need to rent a sprayer to complete the job. These sprayers come equipped with large pumps that help to force the sealer through the hose, wand, and spray tip. Diaphragm and centrifugal pumps may be attached to the sprayer to help with the movement of the sealer. Centrifugal pumps are typically more powerful, but a diaphragm pump is generally more than strong enough to complete a residential sealcoating job.
When you rent a sealcoating pump or sealing machine, the wand will usually come equipped with a spray nozzle. However, this nozzle may be more suited for a commercial parking lot job than a driveway sealing one. While you do want a spray nozzle that will release sealer in a fan pattern, you do not want to choose a tip that will spray sealer too quickly or too wide. This can lead to thick layers of sealer. When sealer is applied too thick, it can crack as it cures. The forming cracks are called mud cracks.
To reduce the appearance of cracks and to also keep overspray to a minimum, purchase a tip for your rented sprayer that releases two gallons of sealer per minute. This tip will be labeled as a 2 GPM tip.
Pick The Best Sealer
If you want to use a sprayer to add sealer to your asphalt driveway, then you will need to make sure that you purchase the right sealer for use with the device. Many diaphragm and centrifugal pumping systems work only if you use water-based sealers. Oil and sand-based products will damage the pump and possibly destroy the spray machine. Make sure to purchase a water-based coal tar sealer or an acrylic polymer product. Stay away from asphalt or emulsion sealers. If you want to use these types of oil sealers, then you will need to buy or rent a pump up sprayer type of device.
Once you find the right type of sealer, make sure to purchase more than enough for the job. Sealers will have a coverage chart listed on the back of containers. You can also use a coverage calculator that is available online. Calculators take into account the condition of your driveway as well as the area of the space, so this type of tool can provide a fairly accurate estimate of how much sealer you need.
When you buy your sealer, make sure to purchase it in a large drum. The drum can be attached directly to the sprayer so you can add the sealant continuously. You will likely need to add some water to the drum before you start though, or the sealer will be too thick. This can cause a clog to form in either the spray hose or nozzle. Read the label on the sealer to see how much water is needed. If the sealer indicates that it is premixed, then this is not required.
For more information or if you feel you cannot do this on your own, talk with professional sealcoating companies in your area, such as ASAP Asphalt Sealing & Paving Co..