Which seals fit curved and quadrant shower doors and curved bath screens, how to measure curved glass, and how to fit a seal so the ends don’t lift.

Silicone goes outside a shower enclosure frame, not inside. Why, the exceptions, where seals take over, and how to reseal without trapping water.

How PVC, polycarbonate, silicone and TPE shower seals typically compare on clarity, flexibility, yellowing, mould and cost, and which suits each position.

Shower door seal sizes by glass thickness (6, 8, 10, 12 mm and inch equivalents) and seal type, with the models that fit each one. Plus how to measure.