Greater London · England
Bathroom Resealing in Islington
Bath, shower, basin, wet room, worktop and sink resealing in Islington, with a one-year guarantee on every job. Ask us for a quote.
- Gaps between the worktop and the wall
- Water getting behind the bath panel
- A joint torn by a bath that flexes
Landlord and commercial work in Islington
Mouldy or split sealant often shows up at the end of a tenancy, and it’s easy to sort out between tenants. Several properties can be quoted together.
We also work for property managers and facilities teams in Islington and across Greater London. We can quote a run of properties together.
Bathroom resealing in Islington, done properly
A bead that has gone black, split or come away shouldn’t be left until there’s a leak. Just call 0345 464 0079 or email us with a photo of the joints, and you’ll get a clear quote for bathroom resealing in Islington. If you have black spots spreading through the bead and gaps where the bath or tray has moved, we can help.
Much of London’s older housing is Victorian and Edwardian terraces, many of them now split into flats, and bathrooms were often squeezed into small rooms. Small, steamy rooms are where mould gets into sealant and grout fastest, and homes in Islington are no different.
A one-year guarantee comes as standard, so you are covered after we’ve gone.
- Place
- Islington (N1, N7, NW1, EC1V)
- Region
- Greater London
- Cover
- One year on every job
- Quote
- A clear price before we start
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
Islington questions
Do you take on hotel work around Islington?
Yes. Hotel and guest-house work is part of what we do. Jobs can be programmed room by room, with out-of-hours working possible to arrange.
Can worn sealant in a flat in Islington cause a leak downstairs?
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.
Is it OK to put new sealant on top of the old bead?
No, never. Sealing over the top looks fine for a few weeks, then lifts. Every trace of the old bead is removed first.
Can I add another job to the visit?
Of course. Doing several areas at once is normally more efficient.
How long does it take to reseal a bath or shower?
One bath or shower is around two hours’ work, including cutting out the old sealant. A full bathroom and kitchen can take most of a day.
Should I try DIY first?
Sometimes. Preparation is everything: all the old sealant out, and a clean, dry joint. If it does not work out, we can redo it.
Can you get rid of the black mould in my sealant?
Yes. We strip the bead, treat the joint and lay new anti-fungal silicone.
Do you take out the old sealant first?
Yes, always, and completely. New silicone does not stick to old silicone, so the joint is cleaned back first.
What we do, step by step
When we get to you, we check the joints match what you told us. If we find something unexpected, we talk it through with you first. Most jobs then take around two hours for one bath or shower, longer for a whole bathroom. Many London jobs are in flats, so we come ready for stairs, narrow hallways and shared entrances. Mention any building rules, key holders or managing agents when you book.
- We start by protecting the area and stripping out the old bead, including the film left on the tiles.
- The joint is cleaned, degreased and treated for mould.
- The joint is left to dry, and baths are filled with water first.
- New anti-fungal silicone goes on in a colour to suit and is tooled to a clean finish.
- We tidy up and give you the cure time, generally around 24 hours.
How to prepare
- Mention any tricky access
- On commercial sites, let us know about site rules
- For indoor joints, keep the area dry beforehand if you can
How to get a quote
If you’re in Islington and need bathroom resealing, phone 0345 464 0079 or email us. A short description of the job and where it is helps us quote, and we will agree the price before any work begins.
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Different surfaces, different methods
Shower trays & enclosures
Shower trays are sealed to the wall, and enclosures are sealed to the tray and tiles. Both take water every day, so both are resealed with anti-fungal sanitary silicone.
Wet rooms
Wet room floors move slightly as they’re used, so the corners need a flexible seal, not grout. Cracked grout in a corner can be cut out and replaced with silicone.
Bathroom resealing in Islington: local notes
London’s water is hard, which leaves limescale on sealant, grout and taps, and it has to be cleaned off before new sealant goes in. London has a lot of flats and conversions, and a failed shower or bath seal in one can show up on the ceiling below, which is why it’s worth fixing early.
Letting a property close to Essex Road station? Then mouldy sealant is one of the first things a new tenant notices, so it’s worth renewing between lets. As a London address, Islington can be tricky for parking: tell us about permits, visitor bays or off-street space when you book. For an older house near a landmark such as St Mary's Church, older homes can move a little, which is hard on rigid grout and tired sealant.
Islington is about 3 miles north-east of City of Westminster, in Greater London. Jobs in Islington get the same care as everywhere else we work: the old material taken out, joints prepared properly and a 12-month guarantee. We cover 764 towns and villages across Greater London, from the larger towns to small villages.
Here we cover the N1, N7, NW1 and EC1V postcode area for bathroom resealing. That includes homes and businesses on Gibson Square, Old Royal Free Square and Cloudesley Square and the roads around them. With the B515 and A5203 close by, Islington is easy for our applicators to reach. We also 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). We also work in nearby towns such as 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
Around Islington, our work takes us to homes and buildings near Islington Green School, The King's Head Public House and Pilsudski Institute of London. 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). Islington has its own railway station: Essex Road station. Other landmarks nearby include King's College Hospital Charity (0.7 miles north-west) and Montfichet's Tower (1.7 miles south). Not far away are Barnsbury Wood and Ludgate Hill.
How to look after the new joints
Simple care keeps the joints in good condition. Our advice:
- Clean with a mild bathroom cleaner and a soft cloth
- Wipe up water along the back of the worktop
- Never pick at the silicone with a blade
- Run the extractor fan during and after every shower
Keep water off the new bead until it has cured, following the cure time we give you. Once it’s cured, wiping it down after use keeps it looking new.
There’s no need to wait for a full refurbishment. Like paintwork, sealant needs renewing from time to time, and renewing it as soon as it fails protects everything around it.
Can I do it myself?
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.
A DIY attempt does not rule out a professional job. We cut it out and start again, so tell us about it when you ask for a quote.
What happens if it’s left?
The difference in a professional reseal is mostly what you do not see: removing all the old sealant, degreasing the joint, treating mould and drying it properly. Skip those steps and even the best silicone fails early. 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 Islington, the repair is bigger than the sealant job would have been.
Homes and businesses are quoted the same way: the amount of work, how we reach it and what it needs. Ask us for a quote and we’ll go through it with you.
Why choose Mr Mastic in Islington
- Arbo and Everbuild products
- 180+ five-star Google reviews
- White, clear, grey or another colour, product permitting
- Sealant colour chosen to suit
Take a look at how sealant jobs are priced and customer reviews.
Quotes for bathroom resealing in Islington
Every job gets its own quote. These are the things that affect it:
- Whether there’s mould to deal with
- Whether old sealant or filler has to be cut out
- How many rooms, windows or areas are involved
- How much there is to do
A few things move the cost up or down: how much old sealant there is and how stubborn it is, any mould to treat, and whether we need extra access for height. Your quote takes all of that into account.
Asking for a quote
The more you tell us, the more accurate the quote. When you ask for a quote, tell us:
- Photos by email, if that’s easy
- If it’s domestic, commercial or a hotel
- How many joints, rooms or windows are involved
- What the problem is, such as mould, gaps, leaks or cracking
For a quick quote, get us on the phone, or send an email if you’d rather. Tell us about the joints that need doing and we’ll explain what’s involved and give you a clear price.