Greater London · England

Remedial sealant & repairs in Grange Mills, Greater London

Professional remedial sealant in and around Grange Mills, with every bit of old sealant taken out first and a 12-month guarantee.

  • Smears and lumps from a botched reseal
  • Leaks that keep coming back after resealing
  • Sealant that came away because the surface wasn’t prepared

Remedial sealant in Grange Mills

How we handle remedial sealant in Grange Mills

In Grange Mills, as anywhere, remedial jobs tend to look alike: sealant over sealant, mould under the bead, leaks that come back and movement joints that have split. We strip each one back and start from scratch. If you have worktop sealant that has shrunk and split and black mould underneath the bead, we can help, whatever the surface.

Much of London’s older housing is Victorian and Edwardian terraces, many of them now split into flats, with bathrooms fitted into whatever space was available. A compact bathroom that steams up every day is hard on silicone and grout.

Big or small, you get the same 12-month guarantee.

Where
Grange Mills (SW12, SW4, SW2)
Wider area
Greater London
Guarantee
One year on every job
Quotes
A clear price before any work starts
Call
0345 464 0079
Page updated
26 October 2026
Fresh white silicone going into the corner where a shower screen meets the tiled wall

What affects the cost of remedial sealant

Some jobs are bigger than they look, and some smaller. The main factors:

  • How easy the joints are to reach
  • Working hours on commercial sites
  • How much there is to do
  • How many areas need sealing

Rather than a set price list, we look at what your job involves: the amount of work, the old material and the access. The price is agreed before we begin.

What we need to know

Photos by email are helpful but not essential. Try to tell us:

  • Whether it has been sealed before
  • Whether it’s a home or a business
  • Any access issues, like height or stairs
  • What the problem is, such as mould, gaps, leaks or cracking

For remedial sealant in Grange Mills, call 0345 464 0079 or drop us an email. Tell us what the problem is and where, and you will get a clear quote before we start.

What happens if it’s left?

A failed seal rarely means a new bathroom. If the bath, tray and tiles are sound, remedial resealing usually puts it right. Where something else has failed, you’ll hear it from us. In London conversions, one flat’s bathroom is often above another flat’s ceiling, so a small leak from tired sealant can mean a neighbour’s ceiling and a lot of disruption. Putting it right early is much less trouble.

Some things make a job bigger or smaller: the old material and how easily it comes out, any mould to treat, and whether we need extra access for height. We take all of that into account in your quote.

Why Grange Mills customers choose us

  • Rated 4.9 stars on Google
  • White, clear, grey or coloured to suit, where the product allows
  • Tidy, careful work
  • We never seal over old sealant

See what affects the cost or our reviews.

Surface by surface

Mouldy bath & shower sealant

Mould can sit behind the silicone, not just in it. Once it’s all removed, the joint is treated so the new sealant starts clean.

Over-sealed & botched joints

Thick, smeared sealant looks messy and hides problems. Taking it back shows what’s underneath, and then we reseal it neatly.

Remedial sealant in Grange Mills: local notes

London has a lot of flats and conversions, and a failed shower or bath seal in one can show up on the ceiling below, which is why it’s worth fixing early. London’s water is hard, so limescale builds up on sealant, grout and fittings.

Grange Mills is in London, so parking needs planning: let us know about parking bays, permits or a driveway. Managing a site like Henry Cavendish Primary School? Then we reseal washrooms and kitchens in schools and businesses as well as homes.

Grange Mills is about 2 miles south-west of Stockwell, in Greater London. Our applicators cover remedial sealant for homes and businesses in Grange Mills and nearby. Grange Mills is one of 764 places in Greater London we cover.

Jobs for remedial sealant in SW12, SW4 and SW2 is quoted and booked the same way as anywhere else. Whether your property is on Lynn Road, Weir Road and Byrne Road or a nearby road, our applicators can take on the job. Neighbouring places we cover for remedial sealant include Hyde farm estate (1 mile south-east), Balham (1 mile south-west), Clapham Park (1 mile north-east), Streatham Hill (1 mile east) and Streatham Park (1 mile south). Within a short drive, we also cover London (4 miles north-east), City of Westminster (5 miles north), Marylebone (5 miles north), Kensington (5 miles north-west), St Pancras (6 miles north) and Shoreditch (6 miles north-east).

Local landmarks in Grange Mills

In Grange Mills, that means homes and buildings near The Bedford pub, Waldorf School of South West London and La Retraite Roman Catholic Girls' School. There’s a railway station in Grange Mills itself: Balham station. Other landmarks nearby include London Sewing Machine Museum (0.9 miles south-west) and St James' Hospital (0.9 miles west). The countryside around Grange Mills includes Knight's Hill and Battersea Park Lake.

Map of Grange Mills © OpenStreetMap contributors

Grange Mills questions

Can you help a landlord with a rental near Balham station?

Yes. We work for landlords and letting agents as well as householders. You can ring 0345 464 0079 or email us with the details for a clear quote.

Can worn sealant in a flat in Grange Mills cause a leak downstairs?

Yes. In a flat, water from a failed bath or shower seal has only one way to go, and that is down. A proper reseal before the leak starts is the easy fix.

Does remedial work come with a guarantee?

Yes. Our one-year guarantee covers the work, and we’re fully insured.

Can you reseal a split movement joint?

Yes. If a joint has been filled with mortar or rigid filler, we rake it out where possible, and reseal with a flexible product.

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

Yes. Repeat leaks normally come from over-sealing, movement or water getting in elsewhere, so we find that first.

Can you do several jobs on one visit?

Yes, we can. More than one area can go on one quote.

Do you work for hotels and businesses?

Yes. Larger jobs can be planned room by room or area by area.

How long will it take to strip and reseal the joint?

Allow a few hours, depending on how many layers have to come out. We’ll give you a timescale when we quote.

What we do, step by step

Our applicators work methodically: protection first, then preparation, sealing and a tidy-up. Typically it takes a few hours, depending on how many layers have to come out, and the area is left clean. In Grange Mills, flats, stairs and shared entrances are part of the routine. Mention any building rules, key holders or managing agents when you book.

  1. Surrounding tiles, trays and frames are protected first.
  2. The botched or failed sealant is cut away completely.
  3. We clean and degrease the joint and look for signs of movement or water.
  4. New sealant goes in once the joint is dry, and is tooled smooth.
  5. We give you the cure time and explain what caused the failure.

Getting ready for the visit

  • Try not to wet indoor joints just before the visit
  • Clear the area around the work
  • For business premises, tell us about site rules or sign-in

How to get a quote

Call for a quick quote, or email us if that’s easier. Describe what needs sealing and we will explain what’s involved and send you a clear quote.

Ask for a quote

Advice

Common problems we fix in Grange Mills

Some joints fail because water is reaching them from behind. A leaking valve, a failed waste or cracked grout feeds water behind the bead, so the silicone goes mouldy or lets go.

Look out for any of the following:

  • Repeat leaks from the same joint
  • Over-sealed joints coming away
  • Worktop sealant that has shrunk and split
  • Smears and lumps from a botched reseal

Letting a property close to Balham station? Then botched sealant from a previous quick fix is easier to strip out between tenants.

Comparing quotes

  • Is the old sealant removed completely?
  • The length of the guarantee
  • How the surfaces are prepared before sealing
  • How hidden problems are handled

Our hiring checklist

Keeping the joints in good condition

Looking after new joints is easy, and it makes a real difference:

  • Find out why the sealant failed first
  • Air the bathroom so the sealant can dry
  • Do not wait for a small gap to become a leak
  • Do not add new sealant on top of old

Go easy on the new sealant: no scraping, scouring pads or harsh chemicals.

If a joint has failed more than once, stop resealing it. Have someone find out why, or the next bead will go the same way.

Work for landlords, hotels and businesses

Whether it’s one flat or a portfolio, you get the same standard of work: old sealant fully removed, joints prepared properly and a one-year guarantee.

Failed sealant is one of the commonest items on a check-out report. We can quote for more than one property at once.

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