In our previous articles, we have mentioned that one of the primary benefits of using interlocking pavers on your driveway and backyard patio is that it doesn’t require as much maintenance over time, other than the occasional power wash and refilling of polymeric sand. This is predicated on the fact that the interlocking pavers were properly and professionally installed from the very start.

Based on our many years of experience as interlocking contractors, the key to ensuring the longevity of your stone pavers is highly dependent on the sand that is used during the construction process. Not all sand is the same, and some are better suited for use on interlocking paver projects.

For the bedding layer, we use limestone screening for the bedding material. It is this gravel bedding that provides final levelling properties and helps secure the paver units in place.

The other area where sand is used is for filling paver joints. The right type of sand for filling in the joints between individual stone pavers is a sand mixture that has multiple grain sizes as well as sharp edges. For this purpose, we don’t use very fine sand since they are more likely to be washed or blown away from the joints over time. Filler sand needs to bind together to create a smooth surface while not slipping and sliding and moving around. The best sand to use in between the paver joints is polymeric sand

Benefits of Polymeric Sand for Interlocking Paver Filler Joints

Polymeric sand is water-activated and is made of a mixture of graded sand and binder. When polymeric sand is exposed to moisture, it forms a strong yet flexible bond to create the strongest interlocking properties possible. This prevents erosion caused by rain and wind, which makes polymeric sand a great material to resist the harsh conditions and extreme weather swings that happens in Ontario. Best of all, polymeric sand has the added benefit of preventing weed growth in between pavers.  This is why we recommend putting more polymeric sand in between the stones as part of our tips to maintaining your interlocking driveways and walkways.

In summary, interlocking pavers are the most versatile material in the market for your driveway, walkways and backyard patio, but in order to ensure its longevity, work with a professional interlocking contractor. Here at Markstone Landscaping, we have over 15 years of experience in the interlocking paver business and will be more than happy to spend some time with you to give you free advice and quote.