Shower Resealing London — Mouldy & Leaking Silicone Fixed

The clearest sign is discoloured or gappy silicone around the base of the shower tray or the edge of the bath — once the seal has failed, it's a question of when it leaks, not if.

• Mouldy shower silicone that keeps coming back after cleaning
• A shower tray leaking edge where the silicone has lifted or gone soft
• Cracked or crumbling bath sealant around the rim
• Water stains or a soft patch on the ceiling or wall below the bathroom
• A musty smell in the bathroom that doesn't clear with ventilation
• Silicone that's shrunk away from the tile or tray, leaving a visible gap

If you're unsure whether what you're seeing is a resealing job or something bigger, our guide to resealing a shower walks through what to check first.

We reseal shower trays, bath edges, wet room floors and the joints between tiles and any bathroom fixture where silicone is the only thing keeping water where it should be.

• Shower tray-to-tile and tray-to-wall joints
• Bath-to-tile and bath-to-wall edges, including roll-top and built-in baths
• Wet room floor and shower screen seals
• Basin and sink surround silicone where it's failed alongside a bath or shower job
• Mouldy shower silicone replacement, including full removal of old sealant

Where resealing on its own won't solve the problem — for example if the tray itself is cracked or the leak has already damaged the floor below — we'll say so before starting work. For a leaking shower valve or mixer rather than a seal, see shower repair, and for wider bathroom fittings see bathroom plumbing.

Shower resealing isn't usually an emergency, so most bookings are same-day or next-day across East London, and we're often able to get to central London and closer boroughs just as quickly because we're based centrally on Commercial Road, E1. If the leaking seal is actively causing damage to a ceiling or floor below, tell us on the phone and we'll treat it with more urgency.

We cover Tower Hamlets, Hackney, Islington, Newham, Southwark, Canary Wharf, Shoreditch, Whitechapel, Bethnal Green, Mile End and the surrounding East and Central London boroughs.

Mould keeps returning when it has worked its way into the silicone itself rather than sitting on the surface — at that point no amount of bleach or bathroom spray removes it for good, because the mould is inside the material, not on it.

The only lasting fix is cutting out the old silicone completely, cleaning and drying the joint fully, and applying a fresh, properly adhered bead of sealant. For the full removal-and-replace process, see our guide to replacing shower silicone. If you'd rather have it done properly the first time, that's exactly what we cover on-site.

Cost depends on how many joints need resealing and whether there's any hidden damage once the old silicone is stripped away — which is why we always assess it on site rather than quote blind over the phone. Every job gets a free, no-obligation quote before we start, so you know exactly what you're paying for before you commit. See our pricing page for more on how we quote.

From mouldy bath edges resealed in Bethnal Green to a leaking shower tray fixed before it damaged the flat below in Hackney, RenoPlumb handles bathroom sealant jobs across East and Central London every week. See more examples on our Our Work page.

We reseal showers and baths across East and Central London, including for a plumber in Islington, a plumber in East London and a plumber in Tower Hamlets. See our area pages for borough-specific coverage.