Greater London · England

Remedial Sealant in Penge

Removing failed, mouldy or leaking sealant and putting it right in Penge, with a 12-month guarantee on every job. Call for a quick quote.

  • Sealant peeling off a dusty or damp surface
  • Decorators’ caulk around a bath or shower
  • A second bead peeling off the first

Trusted remedial sealant in Penge

How we handle remedial sealant in Penge

A joint that keeps letting you down needs more than another bead. Send pictures when you call 0345 464 0079 or send us an email. Typical jobs include leaks that keep coming back after resealing and smears and lumps from a botched reseal, across failed movement joints, leaking tray & enclosure joints and botched or over-sealed joints.

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. Small, steamy rooms are where mould gets into sealant and grout fastest.

Every job is covered by a one-year guarantee, wherever you are in Greater London.

Mr Mastic applicator kneeling beside a white bath, sealing the joint where the bath meets beige wall tiles
Location
Penge (SE20, SE19, SE26)
Region
Greater London
Guarantee
One year on every job
Price
A clear price before we start
Telephone
0345 464 0079
Last updated
26 October 2026

Your questions about remedial sealant in Penge

I let a flat near Penge West station. Can you help?

Yes, landlords and agents are among the people we work for. Just phone 0345 464 0079 or drop us an email with the address and what needs doing, and we will give you a clear price.

Can parking be tricky for a visit in Penge?

Parking in Penge, as in most of London, takes a little planning: a visitor permit or a nearby bay makes the day run more smoothly.

Is it worth trying it myself?

For a simple, easy-to-reach joint, a careful DIYer can do a reasonable job. The usual mistakes are sealing over old sealant, sealing a damp joint and using too much.

How long should I leave it?

Different products cure at different speeds, so please follow the time we give you.

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

Yes. All the sealant comes out, we find out why it failed, and the joint is resealed properly.

Is it messy?

No. We protect the surfaces around the joints, and we clear up the old sealant and our materials before we leave.

Can you match the sealant colour?

We help you choose a colour that suits. The choice depends on the product the joint needs.

Do you do commercial work?

Yes. We’ve worked for hotels, offices and other businesses and we’re fully insured.

Landlord and commercial work in Penge

We also work for businesses, from offices to washrooms and kitchens. For commercial premises, we can talk through working times when we quote.

Letting agents often deal with us directly. Send the address, what’s needed and the access arrangements and we’ll give you a quote.

Can I do it myself?

Not every job suits DIY: work at height, external movement joints, fire-rated sealant and large areas call for the right materials, safe access and experience.

A careful DIYer can reseal a simple joint, such as a straightforward joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.

Why act early in Penge

Repeat failures have a cause. Finding it, whether movement, water from elsewhere or an unsuitable product, ends the cycle. In older London homes, water behind a failed joint soaks into brick and timber without much sign, and by the time it shows on a wall or ceiling in Penge, the repair is bigger than the sealant job would have been.

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 book with us

  • Arbo and Everbuild products
  • More than 20 years in sealant work
  • Old sealant always removed completely
  • You choose the colour before work begins

See our cost guide or customer reviews.

When it is not the sealant

Some problems need a builder, plumber or other trade rather than us:

  • A leaking trap, valve or supply pipe
  • Tiles that have come away from the wall
  • Movement from fittings that are not supported

If you are not sure, just call 0345 464 0079 or send us an email and we will give you a straight answer.

What we seal

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

The process

There’s no need to move everything out before we come, just the space around the work. Everything nearby is protected, and the job takes a few hours, depending on how many layers have to come out in most cases. For a job in Penge, parking and access are the things to plan: let us know about parking, the floor we will be working on and any lift or shared entrance.

  1. We look at how the sealant has failed and check for movement or a leak path.
  2. We strip the joint completely, removing any layers below.
  3. Next, any mould is treated and the joint dried.
  4. Moving joints get backing and a flexible sealant to suit.
  5. We tool the joint and tell you about anything else that needs attention.

How to prepare

  • Mention if the joints have been sealed before
  • For indoor joints, keep the area dry beforehand if you can
  • Mention any tricky access

How to get a quote

We do not publish a price list, as no two jobs are quite the same. Instead, your job gets its own clear quote. To get started, call 0345 464 0079 or send us an email.

Get a quick quote

Related advice

What remedial sealant looks like in Penge

London’s water is hard, so limescale builds up on sealant, grout and fittings, and it has to be cleaned off before new sealant goes in. 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.

For site and facilities teams at buildings such as Harris Primary Academy Crystal Palace, its toilets, changing areas and kitchens need their sealant renewed like any other building’s. For landlords with property near Penge West station, botched sealant from a previous quick fix is easier to strip out between tenants.

Penge is about 1 mile west of Beckenham, in Greater London. We provide remedial sealant to homeowners, landlords and businesses in Penge, as part of our work across Greater London. Our area takes in 764 places across Greater London, from the larger towns to small villages. We also work in London, about 6 miles from Penge.

Every address in SE20, SE19 and SE26 is within our area for remedial sealant, from the main roads to the quietest streets. Remedial sealant is available to properties on High Street, Anerley Station Road and Station Road. You will find Penge on the A234, which makes it straightforward to reach with everything needed for remedial sealant. Other places close to Penge include Anerley (1 mile west), Crystal Palace (1 mile north-west), Sydenham (1 mile north), Gipsy Hill (1 mile north-west) and Upper Norwood (1 mile west). Further out, we also cover London (6 miles north), City of Westminster (8 miles north-west), Marylebone (8 miles north-west), Kensington (8 miles north-west), St Pancras (8 miles north) and Shoreditch (8 miles north).

Landmarks near Penge

In Penge, that means homes and buildings near Crystal Palace School, Crooked Billet pub and Crystal Palace Dinosaurs and the streets around them. Penge has its own railway station: Penge West station. Other landmarks nearby include St Christopher's Hospice (0.5 miles north) and Crystal Palace Museum (0.8 miles north-west). The countryside around Penge includes Dulwich Upper Wood and Knight's Hill.

Map of Penge © OpenStreetMap contributors

Looking after it afterwards

So the new joints stay in good condition:

  • Keep an eye on the ceiling below the bathroom
  • Act on a lifting corner right away
  • Clean sealant with mild products only
  • Never seal over old silicone

Where we have pointed out another fault, have it put right, because the new sealant can’t hold back a problem underneath.

A failing joint rarely gets better on its own. Each use pushes more water behind the bead, into whatever is behind or below. Early action keeps it to a sealant job.

Signs you need remedial sealant in Penge

How a joint is built matters as much as the product. Sealant packed too deep, or stuck to the back of the joint as well as the sides, cannot stretch, and tears at the first real movement. Backing sets the depth and stops that.

These are the problems we’re asked about most:

  • Decorators’ caulk around a bath or shower
  • Repeat leaks from the same joint
  • Beads that never stuck properly
  • Movement joints that have split or pulled away

If you live in an older home near Church of St John the Evangelist, bathrooms in older houses have often been refitted more than once, with sealant laid over sealant.

Comparing quotes

  • How the joint is cleaned and prepared
  • What product goes in the joint
  • What insurance they hold
  • What happens if the job turns out different

10 questions to ask before booking

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