Sometimes moss growth on your sidewalk adds to the appeal of the outdoors, bringing a green patina that blends in. English cottage garden Or a rustic vibe. But if you prefer hard surfaces that look neat and tidy, moss can look a bit messy – not to mention it can be a slippery hazard on rainy or icy days. For that reason, you may want to get rid of it. Instead of the tedious work of digging it out of all those cracks and crevices, or using chemical fungicides that may not be ideal for plants or pets, consider a simple solution that only takes a little time and effort: a pressure washer.
Pressure washers work by blasting a powerful stream of water onto surfaces, removing dirt and debris with relative ease. All you need is a hose to deliver water to your pressure washer and a power source. There are many different pressure washers to buy or rent, and finding the right one for your needs depends on how big the space is — and how big the algae problem is. What kind of hardscape material Needs cleaning. For larger jobs, a heavy-duty pressure washer powered by a gas engine may be needed. But for more delicate surfaces or small spaces, all you need is a more compact and lightweight pressure washer with an electric motor.
Pressure wash carefully to preserve your pavement
You need to be thoughtful Choosing a pressure washerYou will need to pay attention to how much pressure the water has, measured in pounds per square inch (PSI). Too much PSI can damage your hard surface or accidentally dislodge not only the moss but also the sand or grout between the pavers. While large areas of solid concrete, such as driveways, can be cleaned with a high-psi pressure washer (2,500+), smaller sidewalks require a lighter touch to avoid damage. Concrete pavers can be cleaned effectively at a PSI of 1,500 to 2,000. Older brick may require a softer touch, such as 800 to 1,200 PSI. Look at the PSI rating of any pressure washer you buy or rent to make sure it fits your needs.
The spray nozzle you use with your pressure washer is also important for removing algae. Pressure washers often come with different nozzles providing a variety of spray types, from a fan-shaped spray good for removing surface grime to a more focused, 0-degree spray that gets into the cracks, making it helpful for moss. Experts recommend using a 25- or 40-degree nozzle on mossy pavers. Consumer Reports recommends never using a 0-degree nozzle, as its spray can not only damage the surface, but also pose a real safety hazard.
Whatever nozzle you use, be sure to hold the sprayer at least 12 inches above the surface and keep it moving so you don’t damage or damage a spot with such powerful water. And before attacking your moss, be sure to secure any loose pavers, or you could end up with more damage.
