Polymeric sand is the most popular and useful filler used under brick pavers. It is a mixture of fine sand, adhesive and is most widely used in paver joints. Typically, polymeric sand lasts for up to 10 years. But if you use high-quality polymeric sand, it can last for approximately 15 years.
With regular sand, you should re-sand your pavers at least once in two years. Polymeric sand is usually good for about ten years, so re-sanding costs are saved when using this type of sand.
However, since pavers are exposed to various elements such as rain and wind, the joint sand between pavers may get washed out overtime. Occasional washing can also cause the joint sand to corrode. This compacted sand plays an important role as it locks the pavers together.
The number one way to keep sand from washing out of pavers is to seal the area. This is your best shot at making sure your pavers and joints stay tight and protected for years to come. We recommend you always get your joints sealed as soon as the blocks are laid.
Can you apply polymeric sand twice? No, new product won't adhere to the old. You have to remove the old polymeric sand and then apply fresh product for the best result.
It is a mixture of fine sand, adhesive and is most widely used in paver joints. Typically, polymeric sand lasts for up to 10 years. But if you use high-quality polymeric sand, it can last for approximately 15 years.
Polymeric Sand has many benefits, however, the biggest drawback is that it can be easy to mess up, especially if you don't follow the manufacturer's instructions.
Epic Fail #1: Too much or too little watering.
Using too much water can cause the sand to wash out of the joints. On the contrary, using too little can result in the product not setting up properly. Hazing can also occur if sand residue isn't fully washed off the surface of the pavers.
When looking for alternatives to polymeric sand, you will also want to find high quality materials. There are other products, such as EnviroSAND, EnviroSTONE and EnviroPATH on the market that are able to stop water erosion from occurring.
Regular sand for paving is prone to erosion, damage from weeds and can make your pavers hard to wash without risking the loss of any jointing sand between the stones. Using polymeric sand, however, prevents weeds from taking root and holds pavers firmly in place thanks to the durability of its seal.
The Problem With Polymeric Sands & Water Mitigation
Most polymeric sands don't drain water which meant small stones were used to fill the joints between the interlock. For driveways, this solution isn't a big issue but near a pool or patio, people prefer the smooth uniformity of polymeric sand.
Polymeric sand is a material used to fill paver joints, the empty spaces found between each paver, tile or natural stone. It is sometimes called jointing sand, paver sand or hardscape sand. Jointing sand is made up of fine grains, to which manufacturers add a mixture of specific additive particles.
Pressure washing can remove set-in stains and grime from the pavers, but it may also wash away some of the sand. While it washes away quite a bit of general purpose sand, it can only remove ½ to ¾ inches of stabilizing sand.
Pavers should be resealed every 3 to 4 years on average. You will know when your pavers need to be resealed because water will stop beading on the surface and the sheen will diminish. In addition, you may notice weeds starting to grow in between joints and the pavers may start to lose their color.
Pavers and joints should be resealed every 3-5 years.
Polymeric sand cures by drying. And in order to fully set, it needs to dry out completely. If your polymeric sand didn't harden up, it's pretty much guaranteed there's a moisture issue. If the joints remain wet after the installation, they will remain soft until they dry.
Instead of simply using regular sand to fill in the missing spots between the pavers, build long-lasting beauty into the surface with polymeric sand. If you don't, much of the sand you put in will wash out after a few heavy rains, and you may see weeds pop through before you finish packing up at the end of the job.
Improperly installed poly sand can ruin a great paver project. If you want your patio finished for tomorrow's family picnic, you should rethink your timeline.
Any excess polymers and sand should be rinsed off of the project surface. Go over your pavers again with a leaf blower to blow any excess water and sand off of the surface of your pavers. Work in small areas to be sure you remove as much standing water and/or sand as possible.
Polymeric Jointing Sand is suitable for sweeping into the spaces between paving stones. Once placed and dampened, Polymeric Jointing Sand hardens to lock pavers in place.
If remov- ing polymeric sand, a hot water pressure washer will help to soften up the binders in the sand. Any tough to remove hardened areas, may require mechanical means to clean the joint. Take caution with natural stone or thin style pavers and be sure to avoid disturb- ance of the bedding sand underneath.
Polymeric sand is a terrific solution for keeping your walkways and patios locked in place and free of weeds and bugs for years to come. A few things to keep in mind: Polymeric sand can absorb moisture, so you don't have to worry too much about driveway drainage unless you live in an area prone to flooding.
Moss. CasaScapes polymeric sand will not cause nor prevent moss, mold or mildew. Moss, mold and mildew are caused by certain on-site conditions including excess moisture, shade, absence of ventilation, inadequate cleaning or maintenance, presence of soil or other organic debris left on the product.