Glazed rubber is why your pool robot slips

Glazed rubber is why your pool robot slips.

If your pool robot has stopped climbing the walls, look at the brushes or tracks first. The #1 cause is glazed rubber — a smooth, shiny, almost polished surface that has lost its grip.

Run your hand over the rubber. New brush material feels matte and slightly tacky. When it gets glazed, it feels slick like a worn tire. That happens from sun exposure and pool chemicals, which harden the rubber over time. It looks fine from across the pool, but it’s basically skating on the tile.

Uneven wear is the other thing to check. If one side of the brush or track is flat or worn down more than the other, the robot will tilt slightly and lose suction against the wall. That’s a sign the part is past due — not just dirty.

When in doubt, replace them. Brush sets are cheap compared to a new robot, and if they’re glazed, no amount of cleaning will bring the grip back.

If your robot is slipping on the floor too, that’s usually a different problem — check the filter for clogs first.