Silicone resealing: the ninety-minute job everyone quotes at thirty
The surface then has to be genuinely dry, not towel-dry but dry-dry, which in a family bathroom means the shower is out of use for a few hours before the work, worth knowing when you schedule the visit. The pro then masks both sides of the joint with tape, guns a sanitary-grade anti-fungal silicone (not general-purpose acrylic, which is cheaper and fails fast in wet areas), tools the bead smooth in one pass, and pulls the tape while the bead is wet, leaving those crisp straight edges that separate professional work from a DIY afternoon.
Then comes the part no one budgets for: cure time. Sanitary silicone needs roughly 24 hours before the shower runs again; using it the same evening washes out the surface skin and the bead fails early. A full shower enclosure reseal is 60-90 minutes of work plus that day of patience. Quality check a week later: the bead is uniform width, bonded on both edges with no lifting corners, and water sheets off it rather than creeping underneath.