Greater London · England

Bexley Remedial Sealant

Removing failed, mouldy or leaking sealant and putting it right for homes and businesses in Bexley and across Greater London. Fully insured, ARBOMaster approved and guaranteed for a year.

  • Thick, messy sealant smeared over tiles
  • Floor or wall movement joints that have failed
  • Black mould underneath the bead

Trusted remedial sealant in Bexley

Quotes for remedial sealant in Bexley

The price is agreed before any work begins. It takes into account:

  • The old material and how stubborn it is
  • Which sealant suits the joint
  • The number and length of the joints
  • The number of rooms or windows

Combining jobs into one visit is usually more efficient than separate visits, so tell us about everything that needs sealing. We’ll give you a clear quote for the lot.

What we need to know

Photos help, but a description is a good start. Try to tell us:

  • Any access issues, like height or stairs
  • What the problem is, such as mould, gaps, leaks or cracking
  • Roughly how big the job is
  • Whether it’s a home or a business

Getting a quote is simple: let us know what needs doing and where, and roughly how big it is. A few pictures by email make the job easier to understand, and we’ll take it from there.

Remedial sealant in Bexley

The wrong product in the wrong joint fails however neatly it’s applied. Out it comes, and in goes a sealant suited to the job. Typical jobs include sealant that came away because the surface wasn’t prepared and movement joints that have split or pulled away, across expansion joints, leaking tray & enclosure joints and mouldy bath & shower sealant.

London’s water is hard, so limescale builds up along sealant lines, in grout and on fittings. In Bexley, remedial sealant is as much about a room looking cared for as about keeping water out.

Whatever the size of the job, you get the same one-year guarantee in Bexley and across Greater London.

Location
Bexley (DA5, DA6, DA14, DA1)
Wider area
Greater London
Cover
A year, on every job
Quote
A clear quote up front
Phone
0345 464 0079
Updated
26 October 2026
Mr Mastic applicator smiling as he applies silicone to the corner of a bath

Questions from Bexley

I live in a flat in Bexley. Can a failed seal leak into the flat below?

Yes, and the first sign is often a stain on the ceiling below. Cutting out the old sealant and laying a new bead early stops it getting that far.

Do you work for landlords with property near Bexley station?

Yes, landlords and agents are among the people we work for, and several properties can be quoted together. You can phone 0345 464 0079 or email us with the details for a clear quote.

Can old silicone be taken off without scratching the tiles?

Yes. We cut and lift the old sealant with tools suited to the surface, and the residue is cleaned away. Any existing damage is pointed out before work begins.

My shower still leaks after a reseal. Can you sort it?

Yes. We will take all the sealant out, look for why it failed and reseal it properly.

Which products do you use?

Products from Arbo and Everbuild, among others, picked for each joint. We’ll tell you what we are using and why.

Will the old sealant be removed?

Yes. We cut out all the old sealant and clean the joint before applying anything new.

How much does remedial sealant cost in Bexley?

Size, access and the old material all affect the cost. Ask us for a quote.

What if the leak is not the sealant?

That’s why we look for the cause first. If we find the leak is elsewhere, we tell you before going further.

Landlords, agents and businesses in Bexley

Housing providers, facilities teams and property managers book us too in Bexley and across Greater London. We can quote a run of properties together.

Businesses can book us for washrooms, kitchens, offices and more. On commercial sites, working times can be discussed when we quote.

How the job changes by surface

Windows & doors

Failed frame mastic is often hard, cracked and in several layers. We remove it all and clean back to sound surfaces before backing and resealing.

Leaking trays & enclosures

Where the joints are the problem, every bead is stripped and resealed with anti-fungal sanitary silicone, tray edges and screen profiles included.

How it works

Once we are on site, we check the joints match what you told us. If anything is different, we explain it before carrying on. After that, the work takes a few hours for a typical bath or shower, longer where several layers have been applied. In a London area like Bexley, the main things to plan are parking and access: tell us about permits, visitor bays or off-street space, which floor we are working on and whether there’s a lift.

  1. We start by checking the joint for movement, leaks and the reason it failed.
  2. Every layer of old sealant is cut and cleaned out.
  3. We clean the joint, treat any mould and let it dry.
  4. We use the right backing and sealant for any joint that moves.
  5. We tool the joint and tell you about anything else that needs attention.

How to prepare

  • For indoor joints, keep the area dry beforehand if you can
  • Mention if the joints have been sealed before
  • Let us know about parking restrictions

Getting a quote

Need a quote? Please call 0345 464 0079 or drop us an email and tell us about the job. We’ll explain what we’d do and send you a clear quote before work begins.

Get a quick quote

Read more

When something else is needed

To be straight with you, some problems need a different trade:

  • Movement from fittings that are not supported
  • Leaks from a shower valve, waste or pipework (a plumber’s job)
  • Sealant in an older building that needs testing for asbestos first

If in doubt, phone 0345 464 0079 or drop us an email and we will say what we think.

What we seal

  • Leaking tray & enclosure joints
  • Shrunken worktop sealant
  • Failed movement joints
  • Expansion joints
  • Mouldy bath & shower sealant
  • Botched or over-sealed joints

Remedial sealant in Bexley: local notes

Bexley has hotels and guest accommodation nearby. Hotel bathrooms are part of our work as well as homes, and can be done room by room. London has a lot of flats and conversions, and a failed shower or bath seal in one can show up on the ceiling below, so tired sealant is best dealt with early.

For site and facilities teams at buildings such as Old Bexley Church of England School, we reseal washrooms and kitchens in schools and businesses as well as homes. As a London address, Bexley can be tricky for parking: tell us about permits, visitor bays or off-street space when you book.

Bexley is about 3 miles east of Eltham, in Greater London. Whether you are in the middle of Bexley or further out, remedial sealant is available for homes and businesses alike, from flats and houses to offices and hotels. Across Greater London, we cover 764 places, Bexley among them. London is on our list too, about 11 miles from Bexley.

Work in DA5, DA6, DA14 and DA1 works the same way as everywhere else we cover. If you need remedial sealant at a property on Bexley High Street, Camden Road and The North Glade or anywhere close by, our applicators can take on the job. With the A2018 and B2210 close by, Bexley is easy for our applicators to reach. We also cover the places around Bexley: Blendon (1 mile north-west), North Cray (1 mile south), Bexleyheath (1 mile north), Upton (1 mile north) and Coldblow (1 mile east). We also work in nearby towns such as London (11 miles west), City of Westminster (13 miles west), Marylebone (13 miles north-west), Kensington (15 miles west), St Pancras (12 miles north-west) and Shoreditch (11 miles north-west).

Landmarks near Bexley

Typical jobs here are in homes near St Columba's Catholic Boys' School, Danson Park and Townley Grammar School. For rail, the closest station is Bexley station, about 0.6 miles east. Well-known places in the area include Broadway Shopping Centre (1 mile north-east) and Bexley Museum (1.1 miles east). Open spaces near Bexley include Summer Hill and Wansunt Pit.

Map of Bexley © OpenStreetMap contributors

DIY sealant or a professional job?

If you do try it yourself, take your time over the preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it doesn’t work out, we can still put it right.

The difference is mostly in the preparation and the product. Joints are cleaned back to sound surfaces and dried, and the sealant is chosen for how the joint moves and where it is, and the work is guaranteed for a year.

What we’re called out for in Bexley

Sealant needs a clean, dry surface with no grease on it. Soap film, dust, damp or old residue stop it gripping, and the joint starts to come away early.

Any of these means the joints need attention:

  • Mould trapped under a layer of silicone
  • Products that weren’t meant for the joint
  • Worktop sealant that has shrunk and split
  • Leaks that keep coming back after resealing

For landlords with property near Bexley station, failed or mouldy sealant is worth putting right between tenancies, before it turns into a leak.

What to look for in a quote

  • What preparation is included
  • When the joint can take water or movement
  • Whether all the old sealant comes out first
  • Whether they’re fully insured

Our hiring checklist

20+ yearsMastic and sealant specialists
ARBOMaster approvedApproved applicator for Arbo sealants
Fully insuredDomestic, commercial and hotels
One-year guaranteeOn every job