Greater London · England
Remedial Sealant in Canary Wharf
We cover Canary Wharf for removing failed, mouldy or leaking sealant and putting it right. Old sealant removed completely, joints prepared properly and a 12-month guarantee.
- Decorators’ caulk around a bath or shower
- Worktop sealant that has shrunk and split
- Dark patches showing through the sealant
About our remedial sealant in Canary Wharf
Movement and expansion joints fail when the sealant cannot stretch. We cut out the failed sealant and set the depth with backing, then a flexible sealant matched to the movement goes in. We are often asked to deal with floor or wall movement joints that have failed and dark patches showing through the sealant, on expansion joints, mouldy bath & shower sealant and botched or over-sealed joints.
Across London, a large share of homes are flats, conversions or mansion blocks, so a bathroom is often directly above a neighbour’s ceiling. That makes worn sealant and cracked grout in Canary Wharf more than a cosmetic job.
Our work is backed for twelve months, and the guarantee is the same wherever you are.
- Location
- Canary Wharf (E14, SE16, E22)
- Wider area
- Greater London
- Guarantee
- 12 months on all our work
- Quotes
- A clear price before any work starts
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
What remedial sealant looks like in Canary Wharf
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. There are hotels and other places to stay in and around Canary Wharf. Hotel bathrooms are part of our work as well as homes, and can be done room by room.
In the older streets around St Peter's Church, older homes can move a little, which is hard on rigid grout and tired sealant. If you look after a building such as Our Lady and St Joseph Catholic Primary School, we reseal washrooms and kitchens in schools and businesses as well as homes. Canary Wharf is in London, so parking needs planning: let us know about parking bays, permits or a driveway.
Canary Wharf is about 2 miles north-west of Greenwich, in Greater London. We carry out remedial sealant for homeowners, landlords and businesses in Canary Wharf and nearby. Canary Wharf is one of 764 towns and villages in Greater London we cover.
Work in E14, SE16 and E22 works the same way as everywhere else we cover. Whether your property is on Castor Lane, Cassilis Road and Dockyard Lane or a nearby road, our applicators can take on the job. Canary Wharf sits on or near the A1261, which makes travel easy. Close by, we work in London Docklands (1 mile east), Poplar (1 mile north-east), Heron Quays (1 mile south-west), Coldharbour (1 mile east) and Blackwall (1 mile east). We also work in nearby towns such as London (3 miles west), City of Westminster (6 miles west), Marylebone (6 miles west), Kensington (8 miles west), St Pancras (4 miles west) and Shoreditch (3 miles north-west).
Near you in Canary Wharf
Typical jobs here are in homes near Tower Hamlets College, Sir John McDougall Gardens and The Ledger Building pub, among other places. There’s a railway station in Canary Wharf itself: Canary Wharf station. Well-known places in the area include The Pumphouse Educational Museum (0.8 miles west) and Surrey Quays Shopping Centre (1.4 miles south-west). For a walk, there’s St. James's Park Lake and Tower Hill.
For landlords and businesses
If you manage several properties in or around Canary Wharf, several properties can go on one quote. Just tell us the addresses and what each one needs.
A neglected joint can let water reach the structure, which is a bigger problem in a rented property. Resealing at the right time is simple maintenance that we can handle for you.
Nearby places to Canary Wharf
Other services in Canary Wharf
Questions from Canary Wharf
Do you work for landlords with property near Canary Wharf station?
Yes, we work for letting agents and landlords. You can call 0345 464 0079 or drop us an email with the address and a few details, and we will give you a fixed price before work begins.
I live in a flat in Canary Wharf. Can a failed seal leak into the flat below?
Yes, and the first sign is often a stain on the ceiling below. Cutting out the old sealant and laying a new bead early stops it getting that far.
Is it worth trying it myself?
It depends on the job. Work at height, movement joints, fire-rated gaps and large areas are best left to a professional.
Can you take off two layers of silicone?
Yes. We cut out all the layers and clean off the film, then the joint is resealed once.
Where do you work from?
Our base is in Crawley, West Sussex, and we work across South East England, London and Scotland.
What sealant do you use?
Each joint gets the product that suits it. Where it moves, gets wet or faces the weather makes a difference.
Will you leave a mess?
Very little: the area around the joints is protected first, and we clear up the old sealant and our materials before we leave.
Can I choose the sealant colour?
Most of the time, yes. We will explain which colours are available and agree one before work begins.
DIY sealant or a professional job?
The biggest DIY mistake is sealing over old sealant. Silicone doesn’t stick to old silicone, so it lifts and traps water and mould underneath. Everything old must be removed first.
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.
Keeping the joints in good condition
Aftercare is simple, and it makes a real difference:
- Clean sealant with mild products only
- Ask why a joint failed before redoing it
- Keep the room well ventilated
- Look for stains below bathrooms now and then
Keep an eye on the joint at first, especially if movement was the problem. If anything changes, just ring 0345 464 0079 or send us an email.
If a joint has failed more than once, stop resealing it. Have someone find out why, otherwise the next attempt will fail too.
How we quote for remedial sealant
Every job gets its own quote. These are the things that affect it:
- The size of the job
- Whether there’s mould to deal with
- When we can work, for business premises
- Access and height
Commercial jobs are quoted on the same basis as homes: the amount of work, the access and the products needed, along with when we can work on site. Ask us for a quote and we will explain what it covers.
What we need to know
When you call or email, it’s useful to know:
- What the problem is, such as mould, gaps, leaks or cracking
- If it’s domestic, commercial or a hotel
- Access, such as stairs, a lift or height
- How many joints, rooms or windows are involved
For a quote, phone 0345 464 0079 or email us and tell us where the job is and what the problem looks like. You will have a clear quote before we start.
What we can’t put right
Sealant is not the answer to every problem, and we’ll tell you before any work starts. Sealant will not put right:
- A tray or worktop that needs refixing first
- A tray or bath that is cracked
- Water damage behind tiles that needs a tiler
If you’re not sure, just ring 0345 464 0079 or email us and we will give you a straight answer.
Surfaces we seal
- Botched or over-sealed joints
- Failed movement joints
- Shrunken worktop sealant
- Mouldy bath & shower sealant
- Expansion joints
- Leaking tray & enclosure joints
Why act early in Canary Wharf
Stripping out botched sealant adds time to a reseal, but not by much: it takes a few hours, depending on how many layers have to come out. It’s far less disruption than resealing the same joint again and again. In older London homes, water behind a failed joint soaks into brick and timber without much sign, and once it shows in Canary Wharf, the repair is bigger than a sealant job.
What it costs depends on the amount of work, how much old material has to come out and how easy the joints are to reach. You will have a clear quote before any work starts.
Why choose Mr Mastic in Canary Wharf
- Fully insured
- You choose the colour before work begins
- Domestic, commercial and hotel work
- Neat joints and a tidy finish
Read what affects the cost or our reviews.
What we do, step by step
On the day, there’s very little for you to do. Show us the job and we will take it from there. The work itself takes a few hours for most joints, depending on how much old sealant has to come out. 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 we find out how and where the joint has failed.
- All the old sealant comes out, including any layers underneath.
- We clean the joint, treat any mould and let it dry.
- We use the right backing and sealant for any joint that moves.
- The new joint is tooled neatly and we explain anything else we found.
How to prepare
- Let us know about earlier repairs to the joints
- Move anything stored near the joints
- Keep children and pets away from the work area
Ask for a quote
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, and email photos if that is easy.