Greater London · England
North Sheen Remedial Sealant
Removing failed, mouldy or leaking sealant and putting it right for North Sheen, backed by a one-year guarantee. Call for a quick quote.
- Thick, messy sealant smeared over tiles
- Caulk or the wrong sealant used in a wet area
- Black mould underneath the bead
Landlords, agents and businesses in North Sheen
Water getting past a failed joint can damage the building, which is a bigger problem in a rented property. Resealing at the right time is simple maintenance.
If you manage several properties in or around North Sheen, several properties can go on one quote. Send us the addresses and the work at each.
Remedial sealant for homes and businesses in North Sheen
Some sealant jobs are not a simple reseal, because someone has already had a go. New sealant over old, smeared beads, unsuitable products and hidden mould all have to come out before the joint can be done properly. Common call-outs are for sealant that came away because the surface wasn’t prepared and caulk or the wrong sealant used in a wet area, across expansion joints, shrunken worktop sealant and mouldy bath & shower sealant.
Across London, a large share of homes are flats, conversions or mansion blocks, and many bathrooms sit right above someone else’s ceiling. In North Sheen, that is a good reason to put tired sealant and grout right early.
You get a 12-month guarantee, the same in North Sheen as everywhere else we work.
- Place
- North Sheen (TW9, SW14, W4)
- Wider area
- Greater London
- Guarantee
- One year on every job
- Quote
- A clear quote up front
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
When something else is needed
Honest advice matters more to us than a booking, so here’s what sealant cannot fix:
- Tiles that have come away from the wall
- Older mastics that may need an asbestos check before removal
- Movement from fittings that aren’t supported
If in doubt, ring 0345 464 0079 or email us and we’ll say what we think before you book.
Where we work in North Sheen
- Failed movement joints
- Expansion joints
- Mouldy bath & shower sealant
- Botched or over-sealed joints
- Shrunken worktop sealant
- Leaking tray & enclosure joints
Surface by surface
Leaking trays & enclosures
A cracked tray, failed valve or leaking waste needs a different fix. We will tell you what we find.
Over-sealed & botched joints
Botched joints sometimes have damaged edges from earlier scraping. We take care not to make it worse, and point out any existing damage.
North Sheen homes and their sealant
London has a lot of flats and conversions, and a failed shower or bath seal in one can show up on the ceiling below, so tired sealant is best dealt with early. London has hard water, which leaves limescale on sealant, grout and taps, and it has to be cleaned off before new sealant goes in.
Letting a property close to Kew Gardens station? Then botched sealant from a previous quick fix is easier to strip out between tenants. North Sheen is in London, so parking needs planning: tell us about permits, visitor bays or off-street space when you book. For an older house near a landmark such as The Barn Church, older homes can move a little, which is hard on rigid grout and tired sealant.
North Sheen is about 3 miles south of Acton, in Greater London. We provide remedial sealant to homes and businesses in North Sheen and the surrounding area. North Sheen is one of 764 towns and villages in Greater London where we work for remedial sealant. You can also see our page for London, about 8 miles away.
Postcode districts we cover here for remedial sealant: TW9, SW14 and W4. If you need remedial sealant at a property on Kent Road, Ibis Lane and The Avenue or anywhere close by, we can help. We also cover Kew (1 mile north), Grove Park (1 mile north-east), Strand-on-the-Green (1 mile north), East Sheen (1 mile south-east) and Mortlake (1 mile south-east). We also work in nearby towns such as London (8 miles east), City of Westminster (6 miles north-east), Marylebone (6 miles north-east), Kensington (4 miles north-east), St Pancras (8 miles north-east) and Shoreditch (9 miles east).
Around North Sheen
Around North Sheen, our work takes us to homes and buildings near Kew College Prep, Dukes Meadows and Chiswick School, among other places. North Sheen has its own railway station: Kew Gardens station. Other landmarks nearby include Barnes Hospital (1.1 miles south-east) and Livat Hammersmith (2.5 miles north-east). Not far away are Kew Gardens Lake and Duke's Hollow.
North Sheen questions
Do you work for hotels and guest houses in North Sheen?
Yes, hospitality work, including hotels, is part of what we do. Work can be planned room by room, and out-of-hours working can be arranged.
Could a tired shower seal in my North Sheen flat affect the neighbours 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.
Are you insured?
Yes. We’re fully insured, and we can confirm the details when we quote.
Where is Mr Mastic based?
Mr Mastic is based in Crawley. Our applicators cover North Sheen, along with the rest of our area.
Can I add another job to the visit?
Yes. More than one area can be quoted together.
Can I choose the sealant colour?
Normally, yes. Sealants come in white, clear, grey and other colours, and we agree the colour with you before any work starts.
Can you fix a reseal that hasn’t worked?
Yes, generally. We check it’s the sealant and not the tray, valve or waste, then the joints are stripped and resealed.
Should I try DIY first?
You can, for simple jobs. Preparation is everything: all the old sealant out, and a clean, dry joint. If it doesn’t work out, we can redo it.
What happens if it’s left?
Another bead over the top will not fix a failed joint. It does not grip the old layer, so the leak carries on and there’s now more to remove. Converted houses in London often have a bathroom above someone else’s living room, so a small leak from tired sealant can mean a neighbour’s ceiling and a lot of disruption. Dealing with it early is far simpler for homes in North Sheen.
Homes and businesses are quoted the same way: how much there is to do, how we reach it and what it needs, along with when we can work on site. Call for a quick quote and we’ll explain what it covers.
Why North Sheen clients choose us
- 180+ five-star Google reviews
- Quality sealants from Arbo and Everbuild
- We agree the colour with you first
- We never seal over old sealant
See our cost guide or what customers say.
Should I try it myself first?
Not every job suits DIY: high-level joints, fire-rated gaps, external movement joints and big jobs need the right product, the right access and the right method.
Overfilling a joint is a classic DIY mistake. A heavy bead looks messy and copes badly with movement, and getting the depth right matters as much as the look.
How we quote for remedial sealant
The price is agreed before any work begins. It takes into account:
- Access and height
- Any working-time requirements on site
- The product the joint needs
- The old material and how stubborn it is
What you pay reflects the work, not guesswork. That is why we ask a few questions first and give you a clear quote before any work starts.
Asking for a quote
A few details help us give you an accurate quote. When you get in contact, it helps to mention:
- Where the property is
- Whether it has been sealed before
- What the problem is, such as mould, gaps, leaks or cracking
- If it’s domestic, commercial or a hotel
Want a quote for remedial sealant? Please ring 0345 464 0079 or drop us an email with a few details. We will explain what we’d do and give you a clear price before work begins.
What we do, step by step
Most of a good job is in the preparation, so that’s where we spend the time. Joints are cleaned back and dried before anything new goes in. In total, it normally takes a few hours for most joints, depending on how much old sealant has to come out. In North Sheen, flats, stairs and shared entrances are part of the routine. Mention any building rules, key holders or managing agents when you book.
- We protect the surfaces around the joint.
- The botched or failed sealant is cut away completely.
- The joint is degreased and checked for movement and leaks.
- New sealant goes in once the joint is dry, and is tooled smooth.
- You get the cure time and our view on why the joint failed.
How to prepare
- Mention any parking rules near the property
- Mention if the joints have been sealed before
- Move anything stored near the joints
Get a quote
We quote each job on its own. Simply phone 0345 464 0079 or drop us an email and describe the job and send pictures if you have them.