Paver Sanding & Sealing in Clementon, Medford, Cherry Hill, & Moorestown, NJ

The biggest mistake I see is regular play sand or mason sand swept into paver joints. It looks fine the first month. By the next heavy rain it is washing into the lawn, by the following spring there are dandelions growing in every joint. Polymeric sand changed the game because it actually binds together when you mist it. Done right, the joints stay locked for years.

Cleaning Out The Old Joints

Before any new sand goes in, the old failing material has to come out. I use a pressure washer with the right tip and a joint scraper to pull out the spent sand, weeds, moss, and roots. On a Marlton patio that has not been touched in a decade, this step alone takes time, but skipping it is why so many DIY sand jobs fail in a season. The pavers also have to dry fully before the new sand goes in. Damp joints will set polymeric prematurely and you end up with a crusty, weak bond.

Polymeric Sand Application

Sand goes in dry, swept into every joint, then knocked down with a plate compactor over a protective pad so it settles tight. I sweep more in until the joints are full to about an eighth inch below the paver chamfer. Then comes the misting. Light, even passes with a fan spray, just enough to activate the binder without flooding the joints and washing the sand right back out. After cure, the joints are firm enough to stand up to South Jersey rain, freeze thaw, and the occasional wheelbarrow load.

Choosing The Right Sealer

Not every paver wants the same sealer. Concrete pavers, clay pavers, and natural stone all behave differently. I match the product to the surface and to what the customer wants out of it. Some folks want the wet look that pops the color, others want a natural matte finish that just protects the surface. Either way, the sealer has to be breathable so vapor coming up from the base does not get trapped and turn the pavers cloudy white. That milky look is one of the most common bad seal jobs I get called to fix in Cherry Hill and Voorhees.

Sealer Application And Cure

Sealer goes on with a low pressure sprayer or roller in thin, even coats. Two light coats hold up better than one heavy one. I keep foot traffic off for 24 hours and vehicles off for 48 to 72 depending on the product and the temperature. Doing it during a clean weather window matters in South Jersey, where a surprise summer thunderstorm can ruin a fresh seal coat. I check the forecast hour by hour before I commit to a seal day, and I will reschedule if the weather is iffy. The cost of doing it twice is not worth saving a day on the calendar.