Greater London · England
Bathroom & kitchen resealing in Canonbury, Greater London
Baths, showers and worktops in Canonbury need attention? We remove the old material, prepare the joints and seal them properly.
- Damp behind the bath or under the tray
- New sealant laid over old sealant that is now lifting
- Black spots spreading through the bead
Bathroom resealing in Canonbury
With over 20 years in the trade, we reseal baths, showers and kitchens in homes across Canonbury. We’re fully insured ARBOMaster approved applicators, and the work comes with a 12-month guarantee. If you have leaking joints on a shower screen and mouldy sealant that has gone black, we can put it right.
In much of London, period terraces have been converted into flats over the years, with bathrooms fitted into whatever space was available. Small, steamy rooms are where mould gets into sealant and grout fastest.
All our work is covered by our one-year guarantee, wherever you are in Greater London.
- Where
- Canonbury (N1, N1P, E8)
- Wider area
- Greater London
- Cover
- A year, on every job
- Quotes
- Quoted before any work starts
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Landlord and commercial work in Canonbury
A neglected joint can let water reach the structure, which matters even more when someone else lives there. Resealing at the right time is simple maintenance that we can handle for you.
We also work for property managers and facilities teams. Several sites can go on one quote, and we’re fully insured for the work.
Also near Canonbury
More services for Canonbury
DIY sealant or a professional job?
Too much sealant is as bad as too little. A thick, smeared bead looks untidy and doesn’t move well, and the joint depth matters as much as the finish.
Some sealant jobs are within reach of a careful DIYer, such as a straightforward joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
How the job changes by surface
Shower trays & enclosures
There are normally two jobs in a shower: the tray-to-wall joint and the enclosure joints. Both get soaked every time the shower runs, so both are resealed with anti-fungal sanitary silicone.
Sinks & splashbacks
Around the sink, we use a product suited to kitchens, and a food-safe product where it’s needed. The bead is finished smooth so it wipes clean.
Common problems we fix in Canonbury
Plenty of failed sealant has been laid over the top of older sealant. Fresh silicone cannot grip the old bead underneath, so it peels, leaks and hides mould behind it.
Any of these means the joints need attention:
- Water escaping at the shower enclosure
- Leaks into the floor or ceiling below
- Black spots spreading through the bead
- Two layers of silicone, both failing
In the older streets around St Paul's Church, bathrooms in older houses have often been refitted more than once, with sealant laid over sealant.
Questions to ask before booking
- Which sealant they’ll use, and why
- What happens if the job turns out different
- How much experience the applicator has
- What insurance they hold
What happens if it’s left?
Sorting it now is quick: it takes a couple of hours for a single bath or shower. Left until water gets through, the job can grow to lifting panels, drying out and decorating. 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 Canonbury, the repair is bigger than the sealant job would have been.
We don’t show prices on the website, because the cost depends so much on the job itself. Call for a quick quote and we will talk you through it.
Why book with us
- White, clear, grey or coloured to suit, where the product allows
- A 12-month guarantee on all work
- Experience in homes, commercial sites and hotels
- Arbo and Everbuild products
Take a look at how sealant jobs are priced and customer reviews.
Bathroom resealing in Canonbury: local notes
There are hotels and other places to stay in and around Canonbury. Hotel bathrooms are part of our work as well as homes, and can be done room by room. London has hard water, so limescale builds up on sealant, grout and fittings, and it has to be cleaned off before new sealant goes in.
Canonbury is in London, so parking needs planning: tell us about permits, visitor bays or off-street space when you book. Letting a property close to Canonbury station? Then mouldy sealant is one of the first things a new tenant notices, so it’s worth renewing between lets.
Canonbury is about 2 miles north-east of St Pancras, in Greater London. Homes, rented property, offices and hotels in Canonbury can book us for bathroom resealing. Every job comes with our 12-month guarantee. We cover 764 towns and villages across Greater London.
Jobs for bathroom resealing in N1, N1P and E8 works the same way as everywhere else we cover. If you need bathroom resealing at a property on Dove Road, Essex Road and Clare Lane or anywhere close by, our applicators can take on the job. Canonbury sits on or near the A1199 and A1200, which makes travel easy. Nearby, we also carry out bathroom resealing in De Beauvoir Town (1 mile east), Mildmay (1 mile north-east), Kingsland (1 mile east), Newington Green (1 mile north) and Highbury (1 mile north-west). We also work in nearby towns such as London (3 miles south), City of Westminster (3 miles south-west), Marylebone (3 miles south-west), Kensington (6 miles south-west), Walthamstow (4 miles north-east) and Hampstead (4 miles west).
What’s near Canonbury
We work in homes and buildings around Bishopsgate Institute Special Collections and Archives, City of London Academy Highbury Grove and Islington Green School. Other local landmarks include New Crown pub (under half a mile north-west) and Shoreditch Park (0.6 miles south). There’s a railway station in Canonbury itself: Canonbury station. A little further out are Montfichet's Tower (2.2 miles south) and Clowns Gallery-Museum (0.7 miles east). The countryside around Canonbury includes St. James's Park Lake and Ludgate Hill.
How it works
Every visit runs the same way: we check the joints, protect the area around them, do the work and tidy away. It generally takes a couple of hours for one bath or shower, or most of a day for a full bathroom and kitchen. Many London jobs are in flats, so we come ready for stairs, narrow hallways and shared entrances. If the building has a concierge, managing agent or access rules, tell us when you book.
- First, each joint is checked for movement and signs of water.
- Every trace of the old bead is removed, including the thin smear on the tiles.
- The joint is cleaned, degreased and treated for mould.
- When the joint is dry, and a bath has been filled with water, the new silicone goes on.
- The bead is tooled smooth and you are told the cure time, normally around 24 hours.
Preparing for the visit
- Clear the area around the work
- Where the joints are inside, avoid wetting them before we arrive
- Mention any leaks or damp you’ve noticed
Ask for a quote
For a quick quote, get us on the phone, or email us if that’s easier. Tell us about the joints that need doing and we will explain what’s involved before giving you a price.
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Quotes for bathroom resealing in Canonbury
For a quick quote, just ask. The main things that affect it are:
- How many areas need sealing
- When we can work, for business premises
- Mould in or behind the old joints
- Whether the work is at height
Some things make a job bigger or smaller: how much old sealant there is and how stubborn it is, whether mould needs treating, and whether the work is at height. Your quote takes all of that into account.
Helping us quote
When you call or email, these details help:
- Access, such as stairs, a lift or height
- Pictures of the joints, sent by email
- The rough size of the job
- The problem you’ve noticed
The more we know about the job, the more useful the quote. Tell us where the job is, what’s wrong and how much there is.
Canonbury questions
Do you work for landlords with property near Canonbury station?
Yes, we work for landlords and agents. Just phone 0345 464 0079 or drop us an email and tell us about the property, and we’ll send you a clear quote.
Can worn sealant in a flat in Canonbury cause a leak downstairs?
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.
Where is Mr Mastic based?
Mr Mastic is based in Crawley. We cover Canonbury and the rest of Greater London, along with the rest of our area.
Are you ARBOMaster approved?
Yes. Mr Mastic is an ARBOMaster approved applicator, and we are fully insured.
Should I try DIY first?
For a simple, easy-to-reach joint, a careful DIYer can do a reasonable job. Most DIY failures come from sealing over old material, wet joints or too much sealant.
Do you remove the old sealant?
Always. Sealing over old sealant is the main reason resealing fails early, and it’s something we never do.
Is it messy?
We keep the work tidy. Nearby surfaces are protected.
How long before the new sealant can get wet?
After around 24 hours in most cases. You will get the exact cure time before we leave.