Greater London · England

Telegraph Hill Remedial Sealant

Specialist remedial sealant for Telegraph Hill: careful preparation, the right product and tidy work. Ask us for a quick quote.

  • Decorators’ caulk around a bath or shower
  • Floor or wall movement joints that have failed
  • Mould trapped under a layer of silicone

Trusted remedial sealant in Telegraph Hill

Remedial sealant in Telegraph Hill, done properly

Movement and expansion joints fail when the sealant cannot stretch. The old sealant comes out and backing goes in to control the depth, before resealing with a flexible product suited to the movement. If you have sealant applied over old sealant that has lifted and torn expansion joints, we can help.

Across London, a large share of homes are flats, conversions or mansion blocks, so a bathroom is often directly above a neighbour’s ceiling. That makes worn sealant and cracked grout in Telegraph Hill more than a cosmetic job.

All of our work is guaranteed for twelve months, in Telegraph Hill and everywhere else we cover.

Place
Telegraph Hill (SE4, SE15, SE14)
Region
Greater London
Guarantee
A year, on every job
Price
A clear price before we start
Phone
0345 464 0079
Page updated
26 October 2026
Mr Mastic applicator kneeling beside a white bath, sealing the joint where the bath meets beige wall tiles

Different surfaces, different methods

Worktops & kitchens

If a worktop moves when you lean on it, the sealant will keep splitting. That needs refixing before resealing, and we’ll tell you if we find it.

Mouldy bath & shower sealant

Mould often spreads under the bead as well as through it. We treat the exposed joint once the bead is out.

What we’re called out for in Telegraph Hill

Some joints fail because water is reaching them from behind. A slow leak behind the tiles soaks the joint from the back, so the silicone goes mouldy or lets go.

Most people get in touch when they notice something like this:

  • Repeat leaks from the same joint
  • Sealant peeling off a dusty or damp surface
  • Wide, uneven beads that look worse than the old ones
  • Decorators’ caulk around a bath or shower

For site and facilities teams at buildings such as Haberdashers' Hatcham College, its toilets, changing areas and kitchens need their sealant renewed like any other building’s.

Comparing quotes

  • Whether the sealant suits the joint
  • What the quote includes, VAT included or not
  • Which colour the sealant will be
  • The length of the guarantee

How to choose a mastic man

Remedial sealant around Telegraph Hill

In a London flat, water from a failed bath or shower seal can reach the neighbours below, which is why it’s worth fixing early. London has hard water, so limescale builds up on sealant, grout and fittings, and it has to be cleaned off before new sealant goes in.

In the older streets around St Catherine's Hatcham, walls and floors in older homes can move, and sealant and grout show it first. As a London address, Telegraph Hill can be tricky for parking: let us know about parking bays, permits or a driveway.

Telegraph Hill is about 1 mile south-west of New Cross, in Greater London. Telegraph Hill gets the same service as everywhere we cover: old sealant removed completely, careful preparation and a 12-month guarantee. Our Greater London coverage runs to 764 places, Telegraph Hill among them.

Postcode districts we cover here for remedial sealant: SE4, SE15 and SE14. You will find streets such as Mona Road, Pepys Road and Kitto Road, all of which we cover. Nearby, we also carry out remedial sealant in Nunhead (1 mile south-west), New Cross (1 mile north-east), Peckham (1 mile north-west), St Johns (1 mile east) and Brockley (1 mile south-east). Larger places within reach include London (3 miles north-west), City of Westminster (6 miles north-west), Marylebone (6 miles north-west), Kensington (7 miles west), St Pancras (5 miles north-west) and Shoreditch (4 miles north).

Landmarks near Telegraph Hill

Around Telegraph Hill, our work takes us to homes and buildings near Fordham Park and The Brockley Barge pub, among other places. Telegraph Hill has its own railway station: Brockley station. Other landmarks nearby include Southwark Adult Education Institute (0.6 miles north-west) and Lewisham Shopping Centre (1.4 miles east). Open spaces near Telegraph Hill include St. James's Park Lake and New Cross Gate Cutting.

Map of Telegraph Hill © OpenStreetMap contributors

Your questions about remedial sealant in Telegraph Hill

Do you work for landlords with property near Brockley station?

Yes. We work for landlords and letting agents as well as householders. Just phone 0345 464 0079 or send us an email with the address and what needs doing, and we’ll give you a clear quote.

Is parking a problem for a job in Telegraph Hill?

London parking needs a little planning, so let us know about permits, bays or a driveway when you book. The visit is then planned around what’s available.

Do you cover Telegraph Hill?

Yes. We’re based in Crawley and work across South East England, London and Scotland, Telegraph Hill included.

What does remedial sealant cost?

Every job is different, so each one gets its own quote. For a quick quote, phone 0345 464 0079 or email us with a short description of the job.

Can old silicone be taken off without scratching the tiles?

Yes. We take our time over removal, particularly on softer surfaces like acrylic.

Can you do several jobs on one visit?

Yes, and it often makes sense. Doing several areas at once is usually more efficient, so mention them when you ask for a quote.

Do you fix expansion and movement joints?

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

Do you remove the old sealant?

Yes. Sealing over old sealant is the main reason resealing fails early, and it’s something we never do.

DIY sealant or a professional job?

If you do try it yourself, take your time over the preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it does not work out, we can still put it right.

Overfilling a joint is a classic DIY mistake. A heavy bead looks messy and copes badly with movement, and getting the depth right matters as much as the look.

What happens on the day

There isn’t much for you to do on the day. Show us the job and we’ll take it from there. The work itself takes a few hours, depending on how many layers have to come out from start to finish. For a job in Telegraph Hill, parking and access are the things to plan: tell us about permits, visitor bays or off-street space, which floor we are working on and whether there’s a lift.

  1. The failure is looked at first, so we know whether it’s sealant, movement or water from elsewhere.
  2. Each layer is cut out and the residue cleaned off.
  3. We treat any mould and dry the joint thoroughly.
  4. We reseal with a product suited to the joint, backed where needed.
  5. The joint is tooled and you’re told about anything else we found.

How to prepare

  • Mention any leaks or damp you’ve noticed
  • Clear the area around the work
  • For business premises, tell us about site rules or sign-in

Getting a quote

Call for a quick quote, or send an email if you’d rather. Tell us about the joints that need doing and we will talk you through the work before giving you a price.

Ask for a quote

Advice

When it is not the sealant

In fairness, there are a few things sealant won’t fix:

  • A tray or worktop that needs refixing first
  • Water damage behind tiles that needs a tiler
  • Old mastic in a building from before 2000 that should be checked for asbestos before it’s disturbed

Not sure which it is? You can call 0345 464 0079 or send us an email and we will tell you honestly.

What we seal

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

Work for landlords, hotels and businesses

Letting agents and landlords in Telegraph Hill can book us as well as homeowners. Resealing between tenancies keeps a property looking cared for before the next move-in.

Mouldy or split sealant often shows up at the end of a tenancy, and it’s quick to put right between tenancies. We can quote for more than one property at once.

Looking after it afterwards

After the cure time, these simple habits help:

  • Use a soft cloth, not a scourer, on silicone
  • Check ceilings under showers for marks
  • Act on a lifting corner right away
  • Keep the room well ventilated

Leave the new joint to cure fully before it gets wet or moves: generally around 24 hours, or as long as we advise.

Do not keep resealing the same joint. Get the cause found first, or the next bead will go the same way.

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