Greater London · England
Remedial Sealant in Paddington
Remedial sealant for Paddington and the surrounding area: careful preparation, the right product and tidy work. Ask us for a quick quote.
- Floor or wall movement joints that have failed
- Thick, messy sealant smeared over tiles
- Sealant peeling off a dusty or damp surface
Remedial sealant in Paddington, done properly
In Paddington, as anywhere, remedial jobs tend to look alike: over-sealed joints, hidden mould, repeat leaks and split movement joints. Each is stripped back and done again properly. We work on botched or over-sealed joints, shrunken worktop sealant and leaking tray & enclosure joints, and people most often call us about black mould underneath the bead and caulk or the wrong sealant used in a wet area.
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 Paddington more than a cosmetic job.
A 12-month guarantee comes as standard, so you’re covered after we’ve gone.
- Place
- Paddington (W2, W1H, W1U)
- Region
- Greater London
- Guarantee
- 12 months on all our work
- Quote
- A clear quote up front
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
When it is not the sealant
Some problems need a builder, plumber or other trade rather than us:
- Old mastic in a building from before 2000 that should be checked for asbestos before it’s disturbed
- Failed tanking or loose tiles behind the sealant
- Cracks in the fitting rather than the joint
Not sure which it is? You can call 0345 464 0079 or email us and we will tell you honestly before you book.
Where we work in Paddington
- Failed movement joints
- Botched or over-sealed joints
- Leaking tray & enclosure joints
- Mouldy bath & shower sealant
- Expansion joints
- Shrunken worktop sealant
Also near Paddington
What else we do in Paddington
Your questions about remedial sealant in Paddington
I live in a flat in Paddington. Can a failed seal leak into the flat below?
Yes, and the first sign is often a stain on the ceiling below. A proper reseal before the leak starts is the easy fix.
I let a flat near London Paddington station. Can you help?
Yes, landlords and agents are among the people we work for. You can call 0345 464 0079 or send us an email with the details for a clear quote.
What does remedial sealant cost?
Size, access and the old material all affect the cost. Call for a quick quote.
Can you take off two layers of silicone?
Yes. We remove every layer; new silicone doesn’t bond to old silicone, which is why over-sealing fails.
Do you work for hotels and businesses?
Yes, regularly. We can plan bigger jobs in stages to suit the site.
Is it worth trying it myself?
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?
Yes. Sealing over old sealant is the main reason resealing fails early, and it’s something we never do.
How long should I leave it?
That depends on the sealant used, so follow the cure time we give you when we finish.
Landlords, agents and businesses in Paddington
Failed sealant is one of the commonest items on a check-out report. We can quote for more than one property at once.
We work for letting agents and landlords as well as householders. Sealant work between tenants keeps a property looking cared for.
Bathrooms and kitchens in Paddington
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. There are hotels and other places to stay in and around Paddington. Hotel bathrooms are part of our work as well as homes, and can be done room by room.
For landlords with property near London Paddington station, a joint that keeps failing is best fixed properly while the property is empty. If you look after a building such as International Community School, we reseal washrooms and kitchens in schools and businesses as well as homes. Paddington is in London, so parking needs planning: let us know about parking bays, permits or a driveway.
Paddington is about 1 mile west of City of Westminster, in Greater London. We carry out remedial sealant for homeowners, landlords and businesses in Paddington and the surrounding area, as part of our work across Greater London. Across Greater London, we cover 764 places, and Paddington is one of them.
Postcode districts we cover here for remedial sealant: W2, W1H and W1U. If you need remedial sealant at a property on Harrow Road, Craven Road and Harbet Road or a nearby road, we can help. Main roads around Paddington include the A5 and A40, which makes travel easy. We also cover the places around Paddington: Paddington Green (1 mile north-west), Hyde Park Estate (1 mile south-east), Connaught Village (1 mile south-east), Tyburn (1 mile south-east) and Little Venice (1 mile north-west). Within a short drive, we also cover London (4 miles east), Shoreditch (4 miles east), Walthamstow (8 miles north-east), Hoxton (4 miles east), Whitechapel (4 miles east) and Ruislip (11 miles west).
Near you in Paddington
We work in homes and buildings around Royal Society of Medicine Library, Fountains Abbey pub and Royal Parks of London, among other places. Also close by are North Westminster Community School (less than half a mile north-east) and Hampden Gurney CofE Primary School (under half a mile east). There’s a railway station in Paddington itself: London Paddington station. Nearby you will also find Harrods (1.3 miles south) and London Toy & Model Museum (0.5 miles south-west). The countryside around Paddington includes Greville Place nature reserve and The Long Water.
DIY sealant or a professional job?
A careful DIYer can reseal a simple joint, such as a straightforward joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
Not every job suits DIY: high-level joints, fire-rated gaps, external movement joints and big jobs call for the right materials, safe access and experience.
How it works
Most of a good job is in the preparation, so that’s where we spend the time. Every joint is cleaned and dried before new material goes in. All told, the work takes a few hours for most joints, depending on how much old sealant has to come out. In a London area like Paddington, the main things to plan are parking and access: let us know about parking, the floor we’ll be working on and any lift or shared entrance.
- We look at how the sealant has failed and check for movement or a leak path.
- All the old sealant comes out, including any layers underneath.
- The joint is cleaned, treated for mould and left to 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 if you’ve seen damp or leaks
- Mention if the joints have been sealed before
- For indoor joints, keep the area dry beforehand if you can
Getting a quote
To get a quote, call 0345 464 0079 or send us an email with the location and a short description of the problem. You’ll have a clear quote before work begins.
Read more
Aftercare tips
Simple care keeps the joints in good condition. Our advice:
- Look for stains below bathrooms now and then
- Always have old sealant cut out, not covered
- Keep movement joints clear of mortar and paint
- Get the cause of a repeat leak found before resealing
Give the new sealant its full cure time: generally around 24 hours, or as long as we advise.
Leaks through failed sealant grow over time. Each use pushes more water behind the bead, into whatever is behind or below. Early action keeps it to a sealant job.
What the job involves on each surface
Mouldy bath & shower sealant
Mould often spreads under the bead as well as through it. Once it’s all removed, the joint is treated.
Worktops & kitchens
Kitchen joints often have grease and cleaning residue deep in them, so we spend extra time cleaning before resealing.
Why deal with it now?
Mould under a bead cannot be reached by cleaning. The layers have to come out. In a London flat, a failed joint rarely stays your problem alone: water can reach the neighbours below, and gaps in fire-rated joints affect the whole building.
Leaving a failed joint generally makes the job bigger, not smaller. If you are not sure whether it needs doing, ring 0345 464 0079 or email us for an honest opinion and a quote.
Why choose Mr Mastic in Paddington
- Any old sealant cut out fully, not covered over
- Anti-fungal sanitary silicone in wet areas
- More than 20 years in sealant work
- Domestic, commercial and hotel work
Take a look at our cost guide or customer reviews.