Pro FAQ - Polymeric Sand
WHAT IS POLYMERIC JOINTING SAND?
Techniseal Polymeric Jointing Sand is a high-tech mix of graded sand (ASTM C-144) and binder, specially formulated for the filling of narrow or wide joints when installing pavers, slabs or natural stones, or when replacing existing joints. Unlike conventional sand, it stays in place and remains stable. It softens when wet and firms up when dry to better resist soil movements.
HOW MANY COLORS OF POLYMERIC JOINTING SAND ARE AVAILABLE?
Two colours are available, Tan and Grey. Depending on what part of the country you are from, shade will vary, a special name is added to the colour and a different product code is given to the product. But it is the same Polymeric Jointing Sand that is in the bag.
CAN POLYMERIC JOINTING SAND ELIMINATE WEED GROWTH IN JOINTS?
Techniseal Polymeric sand prevents weed growth in paver joints almost completely. However, it is important to keep in mind that if pavers get very little sunlight and a lot of moisture, moss and algae growth is inevitable. In fact, contrary to popular belief, growth takes place on top of the polymeric sand joint and not from underneath the pavers. Airborne particles often accumulate in the joints, creating a friendly environment for moss growth. For most folks, this is an undesirable situation, this is why it is important to reduce the moss inducing factors by applying a protector and plan for an annual cleaning.
THERE IS ALREADY SAND IN THE PAVER JOINTS. CAN I USE POLYMERIC JOINTING SAND?
Yes. If you are tired of sand erosion, weeds and ants on your pavers, Techniseal Polymeric Jointing Sand can be used to replace old sand in your joints. Simply remove the old sand completely and apply Techniseal Jointing Sand. This can easily be done by a professional applicator.
CAN I USE POLYMERIC JOINTING SAND EVEN IF MY JOINTS ARE VERY TIGHT?
Techniseal Polymeric Jointing Sand can be used on joints that are at least 1/8 inch wide. If there is no space between the pavers, there's no place for sand.
CAN I USE POLYMERIC JOINTING SAND WITH NATURAL STONES?
Yes. Techniseal recommends its HP2 Polymeric Jointing Sand for natural stones. It is possible to use HP2 on joints as wide as 4", as long as it is installed properly. NEVER use the product if joints are wider than 4 inches.
THE JOINTS BECOME SOFT WHEN IT RAINS, EVEN THOUGH IT HAS BEEN A WHILE SINCE THEY WERE INSTALLED. IS THIS NORMAL?
This is perfectly normal. Polymeric Jointing Sand will become soft when wet; but it hardens back again when it dries. It's a normal cycle.
HOW IMPORTANT IS IT TO COMPACT POLYMERIC JOINTING SAND?
Very important. By compacting, you obtain joints that are nearly 20% stronger. Compacted joints absorb 60% less water, dry much more quickly and become water-resistant, denser, more compact and are much more durable. Good compaction means less call back!
WHAT IS THE "PLUS" TECHNOLOGY?
The RG+ and the HP2 are both engineered from Techniseal's "Plus" technology. They are nearly impossible to overwater and are water-resistant nearly 90 minutes after its installation. This means a contractor can do more jobs in a day, without worrying about rain.
CAN RG+ AND HP2 POLYMERIC JOINTING SANDS BE USED ON THE SAME JOB?
Yes. Both sands can be used on the same jobsite, although performance will vary between the two. DO NOT mix both types of sand. Colours and installaiton procedures are identical.