City of London · England
Remedial sealant & repairs in City of London
Removing failed, mouldy or leaking sealant and putting it right for homes and businesses in City of London. Fully insured, ARBOMaster approved and guaranteed for a year.
- Beads that never stuck properly
- Sealant applied over old sealant that has lifted
- Repeat leaks from the same joint
Why act early in City of London
Remedial work takes longer than a straight reseal, but rarely a lot: the work takes a few hours for most joints, depending on how much old sealant has to come out. 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 City of London, the repair is bigger than a sealant job.
Combining jobs into one visit is generally more efficient than separate visits, so tell us about everything that needs sealing. We’ll give you a clear quote for the lot.
Why book with us
- Approved under the ARBOMaster scheme
- Fully insured
- Every job guaranteed for a year
- Rated 4.9 stars on Google
Take a look at what affects the cost or customer reviews.
Remedial sealant in City of London
Movement and expansion joints fail when the sealant cannot stretch. The old sealant comes out and backing goes in to control the depth, before resealing with a flexible product suited to the movement. If you are dealing with over-sealed joints coming away and a shower that leaks however often it’s resealed, we can put it right.
Hard London water leaves limescale on sealant, grout and taps alike. For a bathroom or kitchen in City of London, getting the joints right keeps water where it belongs and the room looking clean.
There’s a 12-month guarantee on every job.
- Location
- City of London (EC4V, EC1A, EC2M, EC2Y)
- Wider area
- City of London
- Cover
- 12 months on all our work
- Quotes
- A clear quote up front
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
How we quote for remedial sealant
Some jobs are bigger than they look, and some smaller. What affects the quote:
- The product the joint needs
- When we can work, for business premises
- How many areas need sealing
- How easy the joints are to reach
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. Call for a quick quote and we will explain what it covers.
Asking for a quote
What to tell us when you ask for a quote:
- Photos by email, if that is easy
- Where the property is
- The rough size of the job
- Access, such as stairs, a lift or height
For remedial sealant in City of London, ring 0345 464 0079 or send us an email. Tell us what the problem is and where, and we’ll agree the price before any work begins.
Places near City of London
What else we do in City of London
Common problems we fix in City of London
All sealant wears out eventually. Mould grows into the silicone, the surface hardens and the bead shrinks. At that point it has to come out.
Any of these means the joints need attention:
- A shower that leaks however often it’s resealed
- Products that weren’t meant for the joint
- Thick, messy sealant smeared over tiles
- Dark patches showing through the sealant
For an older house near a landmark such as St Olave Old Jewry, bathrooms in older houses have often been refitted more than once, with sealant laid over sealant.
What to look for in a quote
- How hidden problems are handled
- How long the guarantee is
- Which colour the sealant will be
- What product goes in the joint
When it is not the sealant
A few problems are outside what sealant work can do:
- Sealant in an older building that needs testing for asbestos first
- Cracks in the fitting rather than the joint
- A tray or worktop that needs refixing first
If you are not sure, just ring 0345 464 0079 or email us and we’ll give you a straight answer before booking.
Surfaces we seal
- Mouldy bath & shower sealant
- Leaking tray & enclosure joints
- Expansion joints
- Failed movement joints
- Botched or over-sealed joints
- Shrunken worktop sealant
Remedial sealant in City of London: local notes
City of London 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, which is why it’s worth fixing early.
Rented homes near London Cannon Street station change hands often, and botched sealant from a previous quick fix is easier to strip out between tenants. City of London is in London, so parking needs planning: tell us about permits, visitor bays or off-street space when you book.
City of London is about 1 mile north of London, in City of London. City of London gets the same service as everywhere we cover: old sealant removed completely, careful preparation and a 12-month guarantee.
Postcode districts we cover here for remedial sealant: EC4V, EC1A, EC2M and EC2Y. We cover properties on Aldermanbury Square, Monkwell Square and Paternoster Square. You’ll find City of London on the A1 and A3, which makes it straightforward to reach. If you’re just outside City of London, we cover Barbican Estate (1 mile north), Bishopsgate (1 mile east), Finsbury (1 mile north), Aldgate (1 mile east) and St Luke's (1 mile north).
Landmarks near City of London
Typical jobs here are in homes near St Mary-at-Hill, Prior Weston Primary School and Children's Centre and Golden Fleece pub, among other places. Nearby too are Central Foundation Boys' School (0.8 miles north), Barts Health Archives (under half a mile north-west) and St Alphage Garden (within half a mile north). There’s a railway station in City of London itself: London Cannon Street station. Well-known places in the area include Gabriel's Wharf (0.8 miles south-west) and London Mithraeum (under half a mile south). The countryside around City of London includes St. James's Park Lake and Barnsbury Wood.
How the job changes by surface
Movement & expansion joints
A movement joint must be able to stretch. Failed sealant is cut out, backing rod or tape is fitted and the joint resealed with a low-modulus product.
Mouldy bath & shower sealant
Repeat mould normally points to a damp, poorly aired room. Along with resealing, we’ll mention if the room needs better ventilation.
Can I do it myself?
The difference is mostly in the preparation and the product. Joints are cleaned back to sound surfaces and dried, and the sealant is chosen for how the joint moves and where it is.
If you’re set on DIY, put the effort into preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it fails, we can still redo it.
What happens on the day
Before we leave, we go over the finished joints with you and tell you how long to leave it. The visit itself normally takes a few hours for a typical bath or shower, longer where several layers have been applied, depending on the amount of work. For a job in City of London, 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 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.
- Where the joint moves, backing and a flexible sealant suited to the movement go in.
- We tool the joint and tell you about anything else that needs attention.
Preparing for the visit
- Let us know about stairs, lifts or work at height
- Mention any parking rules near the property
- For business premises, tell us about site rules or sign-in
Get a quote
Need a quote? Please phone 0345 464 0079 or email us with a few details. We will explain what we’d do and give you a clear price before work begins.
Related advice
Questions from City of London
Could a tired shower seal in my City of London 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.
Do you take on hotel work around City of London?
Yes, hospitality work, including hotels, is part of what we do. Jobs can be programmed room by room, with out-of-hours working possible to arrange.
Which products do you use?
Each joint gets the product that suits it. Movement, water and weather all affect the choice, and we’ll tell you what we are using.
How long before the joint can be used?
Many sealants skin over quickly but take longer to cure fully. We’ll tell you how long to leave the joint.
Someone sealed over the old bead. Can you fix it?
Yes. It’s slower than a standard reseal, because every layer has to come out cleanly, but it’s the only way the new joint will last.
How long does remedial resealing take?
The number of joints and layers decides it. You’ll have a timescale before any work begins.
What happens if the problem is the tray or the plumbing?
That is why we look for the cause first. If we find the leak is elsewhere, we tell you before going further.
Are you fully insured?
Yes, we are fully insured for every job we do.