Greater London · England
Lambeth Remedial Sealant
Removing failed, mouldy or leaking sealant and putting it right for Lambeth, backed by a 12-month guarantee. Ask us for a quote.
- Sealant applied over old sealant that has lifted
- Movement joints that have split or pulled away
- Mould trapped under a layer of silicone
Remedial sealant around Lambeth
In a London flat, water from a failed bath or shower seal can reach the neighbours below, so tired sealant is best dealt with early. London has hard water, which leaves limescale on sealant, grout and taps, and it has to be cleaned off before new sealant goes in.
For site and facilities teams at buildings such as Vauxhall Primary School, its toilets, changing areas and kitchens need their sealant renewed like any other building’s. Homes close to St Peter's Church include some older properties, and timber floors under older bathrooms flex, so joints need a sealant that moves with them.
Lambeth is about 1 mile south-west of London, in Greater London. Lambeth gets the same service as everywhere we cover: the old material taken out, joints prepared properly and a 12-month guarantee. Lambeth is one of 764 places in Greater London we cover.
Work in SE11, SW1P and SW8 is quoted and booked the same way as anywhere else. You’ll find streets such as Gibson Road, Langley Lane and Randall Road, all of which we cover. Lambeth sits on or near the A3203 and A3204, so getting to you is simple. Other places close to Lambeth include Vauxhall (1 mile north), Kennington (1 mile south), Oval (1 mile south), Newington Butts (1 mile east) and St George's Fields (1 mile north-east). Within a short drive, we also cover Kensington (4 miles west), Shoreditch (3 miles north-east), Walthamstow (8 miles north-east), Hoxton (3 miles north-east), Whitechapel (3 miles north-east) and Hampstead (5 miles north-west).
Local landmarks in Lambeth
Locally, jobs take us to homes and businesses close to The Jolly Gardeners pub, Old Paradise Gardens and Lambeth Palace Library, among other places. You’ll also find Lambeth School of Art (less than half a mile south) and Lilian Baylis Technology School (under half a mile south). Lambeth has its own railway station: Vauxhall station. Well-known places in the area include Newport Street Gallery (within half a mile north-east) and Evelina London Children's Hospital (0.5 miles north). Not far away are Bellenden Road Nature Garden and Ludgate Hill.
Remedial sealant in Lambeth, done properly
Remedial jobs in Lambeth generally fall into a few patterns: over-sealed joints, hidden mould, repeat leaks and split movement joints. We strip each one back and start from scratch. We work on botched or over-sealed joints, shrunken worktop sealant and mouldy bath & shower sealant, and common reasons people get in touch are leaks that keep coming back after resealing and mould trapped under a layer of silicone.
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.
Our work is backed for twelve months.
- Where
- Lambeth (SE11, SW1P, SW8)
- Region
- Greater London
- Cover
- A year, on every job
- Quote
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
Common problems we fix in Lambeth
A lot of failed joints have been sealed over rather than replaced. Silicone does not bond to silicone, so the new layer peels, and damp and mould settle between them.
The problems people generally mention when they call include:
- Smears and lumps from a botched reseal
- Black mould underneath the bead
- Beads that never stuck properly
- Leaks that keep coming back after resealing
For landlords with property near Vauxhall station, botched sealant from a previous quick fix is easier to strip out between tenants.
Comparing quotes
- When the joint can take water or movement
- Is the old sealant removed completely?
- Which colour the sealant will be
- How hidden problems are handled
FAQs for Lambeth
Can parking be tricky for a visit in Lambeth?
Parking in Lambeth, as in most of London, takes a little planning: a visitor permit or a bay close to the door helps a lot, so mention what’s available when you book.
I let a flat near Vauxhall station. Can you help?
Yes. We work for landlords and agents as well as householders, and several properties can go on one quote. Just ring 0345 464 0079 or email us with the address and what needs doing, and we will send you a clear quote.
Are you ARBOMaster approved?
Yes. Mr Mastic is an ARBOMaster approved applicator and we’re fully insured too.
Are you fully insured?
Yes. Mr Mastic is fully insured, and we’ve been doing sealant work for more than 20 years.
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.
Can you fix a reseal that hasn’t worked?
Yes, generally. First we check whether the leak is the sealant at all, then the joints are stripped and resealed.
Do you offer different sealant colours?
Generally, yes. White, clear and grey are common, and other colours are available for many products, and we’ll agree it with you first.
Can you remove old sealant without damaging the bath?
Yes. We take our time over removal, especially on acrylic, enamel and uPVC.
What happens on the day
On the day, we start by going over the job with you, so there are no surprises. We protect the surfaces around the joints before any work starts. The work usually takes a few hours for most joints, depending on how much old sealant has to come out. In Lambeth, as in most of London, parking needs a little planning. It helps if you can point us to a visitor permit or a bay close to the door.
- The failure is looked at first, so we know whether it’s sealant, movement or water from elsewhere.
- Old beads and residue are removed down to clean surfaces.
- Mould is treated and the joint dried.
- We reseal with a product suited to the joint, backed where needed.
- The joint is tooled and you’re told about anything else we found.
Before we arrive
- Clear the area around the work
- For indoor joints, keep the area dry beforehand if you can
- Let us know about earlier repairs to the joints
Get a quote
To get a quote, phone 0345 464 0079 or email us with the location and a short description of the problem. You will have a clear quote before any work starts.
Read more
How we quote for remedial sealant
Your quote is based on your job. We take into account:
- The size of the job
- The type of sealant required
- Whether old sealant or filler has to be cut out
- Whether the work is at height
There are no prices on our website, because the cost depends so much on the job itself. For a quick quote, please phone 0345 464 0079 or email us and we’ll talk you through it.
What we need to know
Photos help, but a description is a good start. Try to tell us:
- Where the job is, and your postcode
- How many joints, rooms or windows are involved
- Any previous sealing or DIY work
- Access, such as stairs, a lift or height
Getting a quote is simple: let us know the job and the location. A few photos by email make the job easier to understand, and we’ll come back to you with a quote.
Why act early in Lambeth
It’s easy to scratch acrylic, enamel or an uPVC frame cutting out old sealant, and any film left behind stops new sealant sticking. Careful stripping is where most of our time goes. In older London homes, water behind a failed joint soaks into brick and timber without much sign, and once it shows in Lambeth, the repair is bigger than a sealant job.
Instead of a standard rate, we price the job in front of us: how many joints, what’s in them now and how we reach them. The price is agreed before we begin.
Why choose Mr Mastic in Lambeth
- 20+ years of sealant experience
- Sealant colour chosen to suit
- 180+ five-star Google reviews
- A choice of colours where the product allows
Take a look at how sealant jobs are priced or our reviews.
DIY versus a professional finish
A careful DIYer can reseal a simple joint, like a short, easy-to-reach joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
If you are set on DIY, put the effort into preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it fails, we can still redo it.
Other services in Lambeth
Keeping the joints in good condition
No joint lasts for ever, but care makes a real difference. A few tips:
- Air the bathroom so the sealant can dry
- Report a tray that rocks or a worktop that lifts
- Find out why the sealant failed first
- Never fill a movement joint with mortar or grout
If we have found a cause, such as a loose tray or a leaking waste, get it fixed, because the new sealant cannot hold back a problem underneath.
Signs to act on: sealant lifting at the ends, a second bead visible on top of the first, black mould under the silicone, or stains below a bathroom. Any of them means it’s time for remedial work.
When it isn’t the sealant
Honest advice matters more to us than a booking, so here’s what sealant cannot fix:
- A tray or worktop that needs refixing first
- Older mastics that may need an asbestos check before removal
- Tiles that have come away from the wall
Not sure which it is? You can call 0345 464 0079 or email us and we’ll tell you honestly.
Where we work in Lambeth
- Leaking tray & enclosure joints
- Mouldy bath & shower sealant
- Expansion joints
- Failed movement joints
- Shrunken worktop sealant
- Botched or over-sealed joints