How to Seal a Leaking Shower Floor: What to Check Before Repairing It
A practical guide to checking grout, silicone, corners and tiled-surface joints before deciding how a leaking shower floor should be repaired.
Check the visible shower-floor joints first
Before sealing a leaking shower floor, start by checking where the visible surface has actually failed. Look for cracked, missing or powdery grout; separated silicone at corners and changes of plane; gaps around the shower screen or perimeter; and staining or dampness outside the shower. A leak symptom does not by itself prove which joint or layer has failed.
Grout and silicone do different jobs
Rigid grout and flexible sealant do different jobs. Suitable deteriorated grout joints may need preparation and regrouting, while corners, changes of plane and other movement joints generally need an appropriate flexible seal. Applying a coating or new sealant over dirty, loose or failed material can hide the symptom temporarily without addressing the actual surface defect.
Related CareSeal services: Shower Leak Repair, Shower Regrouting, Shower Sealing and Bathroom Waterproofing.
Know when surface sealing is not enough
A surface repair is only appropriate when the problem is within accessible grout, sealant or suitable tiled-surface joints and the surrounding condition supports that approach. If water continues to escape after surface joints are sound, or the evidence points to an underlying membrane, substrate, structural or plumbing problem, that is outside CareSeal's surface-applied repair scope and may require a different specialist. CareSeal can assess the visible condition and recommend a suitable surface-repair scope where appropriate.