Over time, the polymeric sand between your interlock joints breaks down — washed out by rain, eroded by foot traffic, and degraded by Ontario's freeze-thaw cycles. When the sand goes, weeds move in, ants follow, and the whole surface starts to shift. M&L's interlock resanding service restores your joints with professional-grade polymeric sand, properly swept, compacted, and activated — locking your pavers back in place and giving the entire surface a clean, finished look. It's one of the highest-impact, lowest-cost improvements you can make to an existing driveway or patio, and when done right, it adds years of life to your interlock without a full tear-out.