š How to Seal Your Bath or Shower: A Simple DIY Guide
- GladPro Plumbing Services

- Nov 17, 2025
- 3 min read
GladPro Plumbing Services, Serving Gravesend, Kent, Essex and South East London

A clean, neat silicone seal around your bath or shower does more than improve appearance. It prevents leaks, mould growth and long-term water damage to walls and flooring. Over time, sealant can crack, peel or discolour, making replacement necessary.
If you're looking for a simple DIY task that improves hygiene and refreshes your bathroom, resealing is a great place to start.
At GladPro Plumbing Services, we regularly help homeowners across Gravesend, Kent, Essex and South East London with resealing and bathroom maintenance. Below is a clear and easy guide to help you complete the job yourself.
š§° What You'll Need
Bathroom or sanitary-grade silicone sealant
Silicone sealant gun
Sealant remover or scraper
Masking tape
Silicone finishing tool
Mild cleaning spray
Cloths or kitchen roll
šæ Step 1: Remove the Old Sealant
Before applying new silicone, remove all of the old seal.
Use a scraper or sealant removal tool to loosen the old bead.
Remove all traces of silicone, including small residues.
Clean the surface and allow it to dry fully.
š” Important: Any leftover sealant may prevent the new seal from sticking properly.
š§½ Step 2: Ensure the Area Is Completely Dry
Water will stop silicone bonding properly. Make sure the bath, shower tray and surrounding tiles are fully dry.
If you have a plastic/acrylic bath, partially fill it with warm water before sealing. This allows the sealant to set while the bath is at its natural weight and position.
š Step 3: Apply Masking Tape for Straight Edges
Apply masking tape above and below where the sealant will go, leaving a small gap for the silicone. This ensures:
Neat lines
Less mess
A professional finish
Press the tape down firmly.
š§ Step 4: Apply the New Sealant
Cut the sealant nozzle at a 45° angle.
Load it into the sealant gun.
Apply a smooth, continuous bead along the join.
Avoid stopping-and-starting where possible.
Slow and steady gives the best finish.
⨠Step 5: Smooth and Finish the Seal
Use a silicone finishing tool to smooth the bead. This ensures:
A waterproof seal
Better adhesion
A clean and even edge
Wipe excess silicone from the tool between passes if needed.
š§» Step 6: Remove Tape and Allow to Cure
While the silicone is still wet, carefully remove the masking tape to avoid smudging.
Allow the silicone to cure for 12ā24 hours, depending on product instructions.
Do not use the bath or shower during curing.
š” When Should You Reseal?
Your bath or shower may need resealing if the silicone is:
Cracked or peeling
Mouldy or blackened
Allowing water through
Older than 5 years
This is especially common in homes across Gravesend, Kent, Essex and South East London.
š ļø When DIY Isnāt Enough
You may need professional help if:
The seal keeps failing
The bath or tray moves excessively
There's visible damp or mould damage
You are unsure and donāt want to risk leaks
In those cases, weāre here to help.
š 07375 702735
š§° About GladPro Plumbing Services
GladPro Plumbing Services is a trusted, highly rated plumbing company serving homeowners across Gravesend, Kent, Essex and South East London.
We specialise in high-quality plumbing repairs, maintenance and upgrades, with a strong focus on customer satisfaction and long-lasting workmanship.
Why customers choose us:
24/7 availability
No call-out fees
Fully qualified and insured engineers
Honest, transparent pricing
12-month guarantee on all completed work
Friendly, reliable service
15% OFF for OAPs
10% OFF for returning customers
We take pride in providing professional, reliable and friendly service from start to finish.
š° Other Services We Offer
We provide a wide range of plumbing and heating services including:
Tap repairs and replacements
Toilet repairs and replacements
Shower valve and cartridge replacements
Water filter installations
Water softener servicing and installation
Blocked toilets, sinks and drains
Kitchen and bathroom plumbing upgrades
Radiator installation and repairs
Thermostat replacements
Unvented hot water cylinder servicing
and much more...
Whether you need a small repair or a bathroom upgrade, weāre here to help.
š Areas We Cover
We proudly serve:
š Gravesend
šKent
š Essex
š South East London, including Sidcup, Eltham and Bromley
š§ Need Help Sealing or Repairing Your Bath or Shower?
If youād prefer a professional finish or already have leaks, mould or water damage, contact us today.
š 07375 702735
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Thanks Bathrepair