Greater London · England
Islington Remedial Sealant
We cover Islington for removing failed, mouldy or leaking sealant and putting it right. Old sealant removed completely, joints prepared properly.
- Mould trapped under a layer of silicone
- Thick, messy sealant smeared over tiles
- Torn expansion joints
Landlords, agents and businesses in Islington
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.
Hotels need rooms back in use, so the work can be planned room by room around your bookings where we can. We have worked in hotels as well as homes and businesses.
About our remedial sealant in Islington
A movement joint stops working when its sealant splits or sets hard. We cut out the failed sealant and set the depth with backing, before resealing with a flexible product suited to the movement. If you have wide, uneven beads that look worse than the old ones and sealant peeling off a dusty or damp surface, we can help.
Across London, a large share of homes are flats, conversions or mansion blocks, and many bathrooms sit right above someone else’s ceiling. That makes worn sealant and cracked grout in Islington more than a cosmetic job.
The work is guaranteed for twelve months. If something isn’t right with it in that time, tell us and we’ll put it right.
- Location
- Islington (N1, N7, NW1, EC1V)
- Region
- Greater London
- Guarantee
- 12 months on all our work
- Quotes
- A clear price before any work starts
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
Islington: your questions answered
Could a tired shower seal in my Islington flat affect the neighbours below?
It can, yes: water that gets past a split bead or cracked grout often runs under the tray and shows on the ceiling below. It’s far simpler to replace tired sealant early than to deal with a neighbour’s ceiling.
I let a flat near Essex Road station. Can you help?
Yes. We work for landlords and letting agents as well as homeowners. Just ring 0345 464 0079 or drop us an email with the address and what needs doing, and we will give you a clear price.
Can you work on commercial sites?
Yes. Commercial and hotel work is a large part of what we do. We can talk about working times when we quote.
Is there any odour?
Possibly a little. It fades as the sealant cures.
How long does the work take?
A little longer than a standard reseal. Most jobs take a few hours, and we confirm the time with your quote.
Can I do it myself?
That depends on the joint. High-level, external movement and fire-rated joints are professional jobs.
What if resealing won’t fix my leak?
That’s why we look for the cause first. If we find the leak is elsewhere, we tell you before going further.
Can I add another job to the visit?
Yes, we can. More than one area can be quoted together.
DIY versus a professional finish
What a professional job adds is preparation and the right product. We take joints back to clean, dry surfaces, and the sealant is matched to the joint and its conditions, then guaranteed for a year.
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.
When something else is needed
To be straight with you, there are a few things sealant will not fix:
- Tiles that have come away from the wall
- A tray or bath that is cracked
- A tray or worktop that needs refixing first
If in doubt, call 0345 464 0079 or drop us an email and we will say what we think.
Where we work in Islington
- Botched or over-sealed joints
- Mouldy bath & shower sealant
- Failed movement joints
- Leaking tray & enclosure joints
- Expansion joints
- Shrunken worktop sealant
How to look after the new joints
Good habits help new joints last longer. Our tips:
- Air the bathroom so the sealant can dry
- Check ceilings under showers for marks
- Check trays and worktops don’t move
- Keep movement joints clear of mortar and paint
Do not let anyone seal over it later. Over-sealing is how many remedial jobs start, so the old bead should always come out first.
Leaks through failed sealant grow over time. Every shower or downpour sends more water through, into whatever is behind or below. Early action keeps it to a sealant job.
What remedial sealant looks like in Islington
Islington has hotels and guest accommodation nearby. As well as homes, we work in hotel bathrooms, where resealing and regrouting can be done room by room. 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.
If you look after a building such as Islington Proprietary School, its toilets, changing areas and kitchens need their sealant renewed like any other building’s. Rented homes near Essex Road station change hands often, and failed or mouldy sealant is worth putting right between tenancies, before it turns into a leak. If you live in an older home near St Mary's Church, bathrooms in older houses have often been refitted more than once, with sealant laid over sealant.
Islington is about 3 miles north-east of City of Westminster, in Greater London. Across the N1 area, our applicators can take on remedial sealant. Our Greater London coverage runs to 764 places, Islington among them.
Jobs for remedial sealant in N1, N7, NW1 and EC1V works the same way as everywhere else we cover. Whether your property is on Gibson Square, Old Royal Free Square and Cloudesley Square or anywhere close by, we can help. Islington sits on or near the B515 and A5203, which makes travel easy. If you are just outside Islington, we cover Pentonville (1 mile south), Angel (1 mile south), Barnsbury (1 mile north-west), Clerkenwell (1 mile south) and Lower Holloway (1 mile north-west). Larger places within reach include London (3 miles south), City of Westminster (3 miles south-west), Kensington (5 miles south-west), Walthamstow (5 miles north-east), Hampstead (3 miles west) and Ruislip (13 miles west).
Local landmarks in Islington
Locally, jobs take us to homes and businesses close to Islington Green School, The King's Head Public House and Pilsudski Institute of London and the streets around them. You’ll also find Barnard Park (within half a mile south-west) and St Mary's CofE Primary School (less than half a mile east). There’s a railway station in Islington itself: Essex Road station. Nearby you’ll also find King's College Hospital Charity (0.7 miles north-west) and Montfichet's Tower (1.7 miles south). Open spaces near Islington include Barnsbury Wood and Ludgate Hill.
Towns and villages near Islington
More services for Islington
What we do, step by step
We bring everything the job needs with us. After a quick look at the joints together, the area is protected and the work begins. Most jobs take a few hours for most joints, depending on how much old sealant has to come out. For a job in Islington, 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.
- First we work out whether the problem is the sealant, movement or a leak.
- Each layer is cut out and the residue cleaned off.
- Mould is treated and the joint dried.
- The right product goes in, with backing where the joint moves.
- We finish neatly and point out anything that needs another trade.
Before we arrive
- Tell us if parking is tricky
- Keep pets and children clear of the area while we work
- Clear items away from the joints we are working on
Get a quote
Asking for a quote is easy: let us know the job and the location, and roughly how big it is. A few photos by email make the job easier to understand, and we’ll take it from there.
Related advice
Surface by surface
Mouldy bath & shower sealant
Repeat mould normally points to a damp, poorly aired room. Along with resealing, we will mention if the room needs better ventilation.
Over-sealed & botched joints
Every layer has to come out, and silicone residue is cleaned off the tiles too. Only a clean joint will take a new bead.
Why deal with it now?
Stripping out botched sealant adds time to a reseal, but rarely a lot: the work takes a few hours for a typical bath or shower, longer where several layers have been applied. Compared with chasing the same leak every few months, it’s time well spent. Damp from a failed joint spreads quietly in older London brickwork and timber, and once it shows in Islington, the repair is bigger than a sealant job.
What you pay reflects the work, not guesswork. That is why we ask a few questions first and agree the price before starting.
What you get with us
- Approved under the ARBOMaster scheme
- Anti-fungal silicone where joints get wet
- White, clear, grey or another colour, product permitting
- Tidy, careful work
Read what affects the cost or what customers say.