Sometimes called jointing sand or hardscape sand, polymeric sand is a material that is placed in the gaps between patio and walkway paving stones. When sprinkled with water, this sand and adhesive mixture melds together to create an extremely durable and long-lasting bond.

This bond not only keeps your paving stones level and secured, but also prevents grass and weeds from sprouting between your paving stones, and eliminates the risk of ants or other insects setting up shop in the gaps.

Whether you are a professional landscaper or a do-it-yourselfer, you should never overlook the many benefits polymeric sand can offer when used on hardscapes of any size.

Benefits of Using Polymeric Sand

Polymeric sand can bring a range of benefits to your hardscape projects, especially when compared to another filler such as regular sand. While regular sand is usually more suitable as a paving stone base, it does not offer the same longevity and security as polymeric sand would.

Adds to the Overall Look

While polymeric sand is first and foremost a structural jointing item, it can also be used to improve the overall look of your patio. You can find polymeric sand in a wide range of colors to either match or contrast with your paving stones or bricks. This not only provides high structural integrity to your entire hardscape, but also adds a new layer of aesthetics you can enjoy.

Increases Hardscape Durability

Polymeric sand is fine-grain sand that includes a powerful binding agent. As such, it helps increase the overall durability of your hardscape. Whether you are using it for a small paved patio or an entire stonework driveway, polymeric sand should not be overlooked as a way to increase the longevity of your hardscape.

Prevents Weeds and Ants

If you live in an area where ants and other burrowing insects can cause problems under paved stonework, polymeric sand is a great solution. Since it hardens into an extremely durable and solid form after being wetted, it prevents the infestation of burrowing insects between your paving stones.

In addition to preventing insects from being a nuisance, it also prevents weeds and grass from sprouting between your stones. Weeds such as dandelions can be an eyesore on an otherwise nice looking patio, but using polymeric sand between your stones or bricks is a great way to ensure weeds do not become a problem.

Problems When Using Polymeric Sand

If you are a do-it-yourselfer, there are a few things to watch out for when using polymeric sand.

Damp Paving Stones

Before applying your polymeric sand, be sure all of the paving stones are completely dry. If you add the sand and the stones are damp, the polymer bonding agent in the sand will activate and can improperly set-up in the wrong areas.

If using polymeric in a humid climate, the best time to start your hardscape project would be during the morning after the sun has dried the dew from the previous night. Don’t try to use polymeric sand during the evening as the setting sun will cause more dew to form and can lead to bonding issues.

Improper Watering

Once you have your polymeric sand brushed into the gaps between your paving stones, it’s important that you provide the right amount of water for the best bonding. Both overwatering and underwatering can be a problem with failed or uneven bonding.