Re-caulking a shower can restore a failed surface joint, but it cannot repair a leaking pipe, moving tray or damaged waterproofing behind the tiles. Identify the source of water damage before replacing the visible bead.
Prepare the joint
Remove failed sealant carefully without damaging the tray or waterproofing. Clean remaining residue with a product compatible with the surfaces and allow the joint to dry. Use sanitary sealant approved for both adjoining materials.
Apply and finish
- Check the specified joint dimensions and any backing material requirement.
- Mask if appropriate and cut the nozzle for a controlled bead.
- Apply continuously without leaving gaps.
- Tool within the product’s working time and remove tape promptly.
- Keep water away for the stated water-ready or curing period.
Manufacturer instructions govern preparation and cure; this DAP technical sheet is one product-specific example, not a timing rule for every sealant.
Check before returning to use
Look for missed sections and poor adhesion. Follow the shower enclosure manufacturer’s sealing pattern; some drainage openings must remain open. Do not cover widespread mould, soft backing or persistent damp with new silicone. Repeated failure suggests the underlying movement, ventilation or moisture problem needs attention.
