Greater London · England
Kings Cross Remedial Sealant
We cover Kings Cross for removing failed, mouldy or leaking sealant and putting it right. Old material cut out, joints cleaned and sealed neatly.
- Caulk or the wrong sealant used in a wet area
- Kitchen joints letting water behind the worktop
- Sealant that came away because the surface wasn’t prepared
What we’re called out for in Kings Cross
Using the wrong product is a common cause: acrylic caulk in a wet area, a general-purpose sealant on a moving joint, or an acetoxy silicone on natural stone or some metals. None of them last.
Signs it’s time to call us include:
- Wide, uneven beads that look worse than the old ones
- Over-sealed joints coming away
- Beads that never stuck properly
- Kitchen joints letting water behind the worktop
Schools such as Argyle Primary School are buildings too, and its toilets, changing areas and kitchens need their sealant renewed like any other building’s.
What to look for in a quote
- The length of the guarantee
- Who turns up on the day
- Whether VAT is included
- Are they insured?
Remedial sealant in Kings Cross, done properly
Removing failed sealant is the hardest part of the job. Every layer is cut out, the residue cleaned off and the joint degreased, taking care not to scratch the surfaces around it. New sealant only bonds to a clean, dry joint. We work on mouldy bath & shower sealant, shrunken worktop sealant and leaking tray & enclosure joints, and common reasons people get in touch are over-sealed joints coming away and gaps opening along the back of the worktop.
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.
We guarantee the work for a year. If there’s a problem with our work within the year, let us know and we’ll sort it.
- Location
- Kings Cross (NW1W, NW1, N1)
- Region
- Greater London
- Cover
- One year on every job
- Quote
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
Places near Kings Cross
More services for Kings Cross
For landlords and businesses
A neglected joint can let water reach the structure, which is a bigger problem in a rented property. Keeping joints in good order is simple maintenance that we can handle for you.
For anyone letting property in or around Kings Cross, jobs at different addresses can be quoted together. Just tell us the addresses and what each one needs, and photos by email help.
What sealant work cannot fix
Some problems need a builder, plumber or other trade rather than us:
- Older mastics that may need an asbestos check before removal
- Tiles that have come away from the wall
- Movement from fittings that aren’t supported
If you are not sure, just ring 0345 464 0079 or email us and we’ll give you a straight answer before you book.
Surfaces we seal
- Failed movement joints
- Botched or over-sealed joints
- Leaking tray & enclosure joints
- Shrunken worktop sealant
- Expansion joints
- Mouldy bath & shower sealant
How we quote for remedial sealant
You’ll get a clear quote before we start. It takes into account:
- The old material and how stubborn it is
- Mould in or behind the old joints
- The number and length of the joints
- How many rooms, windows or areas are involved
Doing several joints on one visit is normally more efficient than separate visits, so tell us about everything that needs sealing. We’ll give you a clear quote for the lot.
Asking for a quote
Photos help, but a description is a good start. Please mention:
- Whether it has been sealed before
- Photos by email, if that’s easy
- Access, such as stairs, a lift or height
- The address or postcode of the job
Call for a quick quote, or send an email if you’d rather. Describe what needs sealing and we will explain what’s involved before giving you a price.
Kings Cross homes and their sealant
London’s water is hard, so limescale builds up on sealant, grout and fittings. 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.
Kings Cross is in London, so parking needs planning: tell us about permits, visitor bays or off-street space when you book. If you live in an older home near Holy Cross Church, older homes can move a little, which is hard on rigid grout and tired sealant.
Kings Cross is about 1 mile north-west of St Pancras, in Greater London. From the centre of Kings Cross to the outskirts, we cover remedial sealant for every kind of property, from flats and houses to offices and hotels. Our Greater London coverage runs to 764 places, and Kings Cross is one of them.
Every address in NW1W, NW1 and N1 is covered for remedial sealant, from the main roads to the quietest streets. Local streets include Euston Road, Duke's Road and Phoenix Road, and we cover them all. Kings Cross is on the A501 and A4200, which makes it straightforward to reach. We also cover Somers Town (1 mile west), St Pancras (1 mile south-east), Euston (1 mile south-west), Bloomsbury (1 mile south) and Agar Town (1 mile north-west). Further out, we also cover Kensington (4 miles south-west), Walthamstow (6 miles north-east), Whitechapel (3 miles east), Hampstead (3 miles north-west), Ruislip (13 miles west) and Brompton (3 miles south-west).
What’s near Kings Cross
We work in homes and buildings around The Fellow pub, Lewis Cubitt Park and Pilsudski Institute of London, among other places. Also close by are Regent High School (0.5 miles north-west) and The Poor School (under half a mile east). Kings Cross has its own railway station: London Kings Cross station. Nearby you will also find Sartorial Contemporary Art (within half a mile south-east) and Brunswick Centre (under half a mile south). Green spaces nearby include St. James's Park Lake and Ludgate Hill.
Different surfaces, different methods
Leaking trays & enclosures
If the tray is cracked, or the leak is from the valve or waste, sealant will not fix it. We say so rather than reseal.
Mouldy bath & shower sealant
Mould often spreads under the bead as well as through it. Once it’s all removed, the joint is treated so the new sealant starts clean.
Leave it or put it right?
A failed seal rarely means a new bathroom. If the bath, tray and tiles are sound, remedial resealing generally 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.
Homes and businesses are quoted the same way: the amount of work, how we reach it and what it needs. Call for a quick quote and we will go through it with you.
Why us?
- Any old sealant cut out fully, not covered over
- 4.9 on Google from 180+ five-star reviews
- Anti-fungal sanitary silicone in wet areas
- A 12-month guarantee on all work
Take a look at how sealant jobs are priced and customer reviews.
FAQs for Kings Cross
I live in a flat in Kings Cross. Can a failed seal leak into the flat below?
Yes, it can. Water that gets past failed sealant or cracked grout can run under the bath or tray and show up on the ceiling below. It’s far simpler to replace tired sealant early than to deal with a neighbour’s ceiling.
Can parking be tricky for a visit in Kings Cross?
It can be, so it helps to tell us about permits, visitor bays or off-street space when you book. The visit is then planned around what’s available.
Are you fully insured?
Yes. We’re fully insured.
How long should I leave it?
That depends on the sealant used, so follow the cure time we give you when we finish.
Will there be a smell?
There can be a smell while the sealant cures, but it fades. Ventilation helps.
What sealant do you use?
Products from Arbo and Everbuild, among others, picked for each joint. We’ll tell you what we’re using and why.
Someone sealed over the old bead. Can you fix it?
Yes. We remove every layer; over-sealing fails because silicone will not bond to silicone.
Do you offer different sealant colours?
Yes. Sealants come in white, clear, grey and other colours, and we will agree it with you first.
How it works
We keep the work tidy and contained to the area we are working on, so you can carry on as normal. Expect the work to take a few hours for a typical bath or shower, longer where several layers have been applied, and we explain the cure time before we leave. In Kings Cross, flats, stairs and shared entrances are part of the routine. If the building has a concierge, managing agent or access rules, tell us when you book.
- We start by checking the joint for movement, leaks and the reason it failed.
- All the old sealant comes out, including any layers underneath.
- We clean the joint, treat any mould and let it dry.
- Where the joint moves, backing and a flexible sealant suited to the movement go in.
- Finally we finish the joint and talk you through what we found.
Preparing for the visit
- Try not to wet indoor joints just before the visit
- Plan for the work area to be out of bounds to pets and children
- On commercial sites, let us know about site rules
Getting a quote
There’s no standard price list. Instead, your job gets its own clear quote. To arrange one, ring 0345 464 0079 or send us an email.