Greater London · England
Highgate Remedial Sealant
We cover Highgate for removing failed, mouldy or leaking sealant and putting it right. Old sealant removed completely, joints prepared properly and every job guaranteed for a year.
- Black mould underneath the bead
- Beads that never stuck properly
- Leaks that keep coming back after resealing
Remedial sealant for homes and businesses in Highgate
If a joint fails again and again, something is causing it. Movement, the wrong product or a leak from somewhere else will beat any new bead. Finding that cause comes before any new sealant. We are often asked to deal with thick, messy sealant smeared over tiles and worktop sealant that has shrunk and split, on botched or over-sealed joints, failed movement joints and expansion joints.
In much of London, period terraces have been converted into flats over the years, with bathrooms fitted into whatever space was available. A compact bathroom that steams up every day is hard on silicone and grout.
A 12-month guarantee comes as standard.
- Location
- Highgate (N6, N19, NW5)
- Region
- Greater London
- Guarantee
- 12 months on all our work
- Price
- A clear price before we start
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
Your questions about remedial sealant in Highgate
Can parking be tricky for a visit in Highgate?
It can be, so it helps to tell us about permits, visitor bays or off-street space when you book. That way the visit can be planned around it.
I let a flat near Upper Holloway station. Can you help?
Yes, rental work is part of what we do. Just call 0345 464 0079 or email us and tell us about the property, and we’ll give you a clear quote.
Can you take off two layers of silicone?
Yes. Both layers come out; new silicone doesn’t bond to old silicone, which is why over-sealing fails.
Do you guarantee remedial jobs?
Yes. You get our 12-month guarantee.
Do you come to Highgate?
Yes. We work in Highgate. To book, ring 0345 464 0079 or email us.
Can you quote for more than one area?
Yes. Tell us about everything you’d like done and you will get one quote.
Are you an approved applicator?
Yes. We’re ARBOMaster approved, the scheme for applicators of Arbo sealants.
Do you fix expansion and movement joints?
Yes. Failed movement joints are cut out and resealed with backing and a flexible sealant suited to the movement.
DIY sealant or a professional job?
The biggest DIY mistake is sealing over old sealant. New silicone won’t bond to old, so it lifts and traps water and mould underneath. All the old material has to come out first.
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.
How we quote for remedial sealant
You will get a clear quote before work begins. It’s based on:
- Any mould that needs treating
- How much old sealant there is and how hard it is to remove
- The product the joint needs
- Any working-time requirements on site
Doing several joints on one visit is generally more efficient than separate visits, so tell us about everything that needs sealing. You will get one clear quote for the whole job.
What we need to know
The more you tell us, the more accurate the quote. When you get in contact, it helps to mention:
- Any previous sealing or DIY work
- How we’d reach the joints
- How many joints, rooms or windows are involved
- A few photos by email, if you can
For a quote, ring 0345 464 0079 or send us an email and tell us where the job is and what the problem looks like. You’ll have a clear quote before any work starts.
What we do, step by step
We keep the work tidy and contained to the area we are working on, so you can get on with your day. Expect the work to take a few hours for most joints, depending on how much old sealant has to come out. In Highgate, as in most of London, parking needs a little planning. A visitor permit or a nearby bay makes the visit run more smoothly.
- Surrounding tiles, trays and frames are protected first.
- Every layer of failed sealant is stripped out.
- We clean and degrease the joint and look for signs of movement or water.
- Once dry, a suitable sealant is applied and tooled.
- You get the cure time and our view on why the joint failed.
How to prepare
- Move anything stored near the joints
- Tell us if parking is tricky
- Keep children and pets away from the work area
Getting a quote
We do not publish a price list. Instead, your job gets its own clear quote. To get started, phone 0345 464 0079 or email us.
Read more
What remedial sealant looks like in Highgate
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.
For landlords with property near Upper Holloway station, failed or mouldy sealant is worth putting right between tenancies, before it turns into a leak. In the older streets around Highgate United Reformed Church, older homes can move a little, which is hard on rigid grout and tired sealant.
Highgate is about 2 miles north-east of Hampstead, in Greater London. Jobs in Highgate get the same care as everywhere else we work: old sealant removed completely, careful preparation and a 12-month guarantee. 764 places in Greater London are on our list, from the larger towns to small villages.
We work across the N6, N19 and NW5 postcode area for remedial sealant. Whether your property is on Wood Lane, Grange Road and Talbot Road or a nearby road, we can help. Close by, we work in Upper Holloway (1 mile south-east), Dartmouth Park (1 mile south), Lissenden Gardens (1 mile south), Crouch End (1 mile north-east) and Tufnell Park (1 mile south-east). Further out, we also cover London (5 miles south-east), City of Westminster (4 miles south), Marylebone (4 miles south), Kensington (6 miles south-west), St Pancras (3 miles south) and Shoreditch (4 miles south-east).
Landmarks near Highgate
Around Highgate, our work takes us to homes and buildings near The Angel Inn, St Aloysius RC College and Whittington Park and the streets around them. For rail, the closest station is Upper Holloway station, about 0.9 miles south-east of the centre. Well-known places in the area include Highgate Private Hospital (0.6 miles north-west) and Montfichet's Tower (4.4 miles south-east). The countryside around Highgate includes Darland's Lake and Parkland Walk.
Work for landlords, hotels and businesses
We regularly work with letting and managing agents. Send the address, what’s needed and the access arrangements and we’ll quote.
Landlords and letting agents in Highgate can book us as well as householders. Sealant work between tenants is a simple way to keep a property in good order before the next move-in.
Why act early in Highgate
Adding more sealant is the usual quick fix, and it rarely works. It does not grip the old layer, leaving the leak in place and one more layer to cut out later. Damp from a failed joint spreads quietly in older London brickwork and timber, and once it shows in Highgate, the repair is bigger than a sealant job.
Instead of a standard rate, we price the job in front of us: the amount of work, the old material and the access. You will know the price before we begin.
Why us?
- Any old sealant cut out fully, not covered over
- Arbo and Everbuild products
- 180+ five-star Google reviews
- Sanitary silicone with an anti-fungal additive in wet areas
Read our cost guide or our reviews.
What the job involves on each surface
Over-sealed & botched joints
Previous removal attempts can leave scratches or gouges. We work carefully to avoid adding to it, and tell you about any damage we find.
Mouldy bath & shower sealant
Mould that has grown into silicone doesn’t clean out for good. All of it comes out, and the joint is treated and dried before anti-fungal sanitary silicone goes in.
Nearby places to Highgate
Other services in Highgate
Do you need remedial sealant in Highgate?
Movement tears sealant that is not designed for it. Flexing baths, rocking trays and building movement joints split any bead that’s too stiff or too thin.
If you can see any of these, it’s time to have the joints looked at:
- Black mould underneath the bead
- Beads that never stuck properly
- Over-sealed joints coming away
- A shower that leaks however often it’s resealed
Schools such as St Michael's Church of England Primary School are buildings too, and its toilets, changing areas and kitchens need their sealant renewed like any other building’s.
Before booking anyone
- Which colour the sealant will be
- How the joint is cleaned and prepared
- Whether VAT is included
- Who does the work, and how experienced they are