If you have a patio made with pavers, there is a good chance that you have unwanted weeds too. However, you don’t need to get stressed over it. I know that from personal experience. I was in a similar situation until I discovered how to combat them naturally. With that said, here’s some of what I learned:
Use a Pressure Washer
Based on my experience, taking a pressure washer to your patio is an awesome way to eradicate weeds. You could opt to use just plain, hot water or add an eco-friendly, concentrated detergent to the mix. The upside to using the detergent is that it will typically help to suffocate any emergent seeds too. Most eco-friendly, concentrated detergents that I am aware of tend to sell for around $50 a case.
Add Polymer Sand
Another way to remove weeds from your patio’s cracks and crevices is to invest in some polymeric sand. You can generally purchase it by the bucket or the bag at home improvement stores. To use the sand, remove whatever weeds are already around your patio first. Then follow the instructions located onto the sand’s packaging. In my experience, you’ll need to sweep the sand into the cracks first. Afterward, you’ll most likely have to tamp it down and wet it. That’s basically all there is to it. The sand itself will generally deter the weeds from reoccurring.
Salt with Caution
If you are meticulous in its application and your cleaning regimen, you may want to sprinkle table salt onto the weeds. Just keep in mind that the salt may potentially damage your pavers. I know that from living in an area that is within driving distance of salt water. Damage that could occur as a result of prolonged salt exposure includes discoloration, etching and chipping. Should you want to use salt as a weed killer anyway, check to see which materials were used in your pavers’ construction. Some higher end pavers are better equipped to handle limited salt exposure than others. For more information about this topic, check out the case study posted on the Belgard website. It’s titled “Caring for Hardscapes in Cold Climates: The Effects Deicing Salt Can Have on Pavers.”
White Vinegar with Caution
Finally, white vinegar can also be used to solve your patio problems. However, it traditionally carries with it the same warnings as salt and salt water. That’s because it contains acetic acid. Although the acidity tends to be low, it could still potentially cause discoloration of some pavers. Thus, I would recommend experimenting with it first. The best way to do that is to pour the vinegar over an unused, duplicate paver and place it into the sun for 24 to 36 hours. At the end of that period, inspect the paver for discoloration. The results should give you a pretty good idea of whether or not you should proceed with your plans.