Does Polymeric Sand Get Soft When Wet

Polymeric jointing sand is a high-tech mix of graded, colored sand and a binder, specially formulated for the filling of joints between pavers, slabs or natural stones. Unlike conventional sand it stays in place and remains stable. It softens when wet and firms up when dry to better resist soil movements.

What happens if polymeric sand gets rained on?

After installation, a hard rain on polymeric sand that has not fully set up could result in polymeric sand all over the top of the pavers. … However, once water is applied, any remaining polymeric sand particles will harden and remain on the surface resulting in an unhappy customer.

Does water penetrate polymeric sand?

It also allows water to permeate through, whereas polymeric sand only lets a small percentage of water to pass through. Since this product allows such a large amount of water to pass through, it is best used in applications where an open graded base is installed that allows water to pass through.