Paving stone construction is a durable option for outdoor surfaces, but it's not completely maintenance-free. Over time, water, moisture, salts and erosion can cause damage to pavers. Sealing the pavers is an effective way to protect and enhance their color, as well as prevent water and salt from damaging the surface. The sealant penetrates the pores of the concrete and stays on its surface, blocking out water, dust, pollen, mold, dirt, and other elements.
It also offers some protection against UV rays and prevents colors from fading. Some sealants even come with different levels of gloss that can give your patio or border a damp look. In addition to protecting the pavers from damage, sealants also enhance and enrich their color. It depends on the type of sealant used. Penetrating paving stone sealers are a great option because they don't leave a film on the surface and create a less slippery effect.
However, they don't improve color or change the appearance as much as other sealants. It's important to note that if you seal the cobblestone too soon, you'll trap salts and minerals instead of allowing them to bleed out. To ensure proper sealing, it's best to clean the surface of the paving stones first and then clean the pores of the paving stone to allow better penetration of the sealant.