If it’s just a small section, some people manage with DIY, but the results vary.

The main difference between DIY and professional repair is durability. A simple patch with extra sand might hold for a season, but the issue usually comes back. With companies like https://oakshs.ca/interlock-repair/, the process includes lifting the affected stones, fixing the underlying base, compacting the area properly, and then reinstalling the stones with new jointing sand. This ensures stability and keeps the surface level much longer. If the problem is minor, you could try handling it yourself as practice, but keep in mind it’s easy to miss important details like slope for drainage or compaction depth. Professional crews bring specialized tools and experience, which makes the repair last years instead of months. Many homeowners who try DIY end up calling experts anyway once the problem spreads.