Greater London · England
Remedial sealant & repairs in Colliers Wood, Greater London
Problem with your failed sealant joints in Colliers Wood? We remove the old material, prepare the joints and seal them properly, with a one-year guarantee.
- Sealant applied over old sealant that has lifted
- Movement joints that have split or pulled away
- Kitchen joints letting water behind the worktop
What we cannot put right
It helps to know what we cannot do too:
- Tiles that have come away from the wall
- A tray or worktop that needs refixing first
- A tray or bath that is cracked
If in doubt, phone 0345 464 0079 or send us an email and we’ll say what we think before you book.
Joints and surfaces we work on
- Failed movement joints
- Mouldy bath & shower sealant
- Leaking tray & enclosure joints
- Expansion joints
- Botched or over-sealed joints
- Shrunken worktop sealant
About our remedial sealant in Colliers Wood
Some sealant jobs aren’t a simple reseal, because someone has already had a go. New sealant over old, smeared beads, unsuitable products and hidden mould all need stripping out before the joint can be done properly. We are often asked to deal with decorators’ caulk around a bath or shower and movement joints that have split or pulled away, across leaking tray & enclosure joints, shrunken worktop sealant and expansion joints.
London homes include a lot of flats, conversions and mansion blocks, and many bathrooms sit right above someone else’s ceiling. In Colliers Wood, that is a good reason to put tired sealant and grout right early.
We stand behind the work with a one-year guarantee.
- Location
- Colliers Wood (SW17, SW19, CR4)
- Wider area
- Greater London
- Guarantee
- A year, on every job
- Quotes
- A clear quote up front
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
What remedial sealant looks like in Colliers Wood
London has hard water, so limescale builds up on sealant, grout and fittings. 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.
Letting a property close to Tooting station? Then botched sealant from a previous quick fix is easier to strip out between tenants. Homes close to St Nicholas include some older properties, and walls and floors in older homes can move, and sealant and grout show it first. As a London address, Colliers Wood can be tricky for parking: tell us about permits, visitor bays or off-street space when you book.
Colliers Wood is about 5 miles south of Brompton, in Greater London. From the centre of Colliers Wood to the outskirts, we cover remedial sealant for every kind of property. 764 places in Greater London are on our list. There’s also a page for London, about 6 miles away.
Jobs for remedial sealant in SW17, SW19 and CR4 works the same way as everywhere else we cover. We cover properties on Acre Road, Boyd Road and Park Road. Other places close to Colliers Wood include Tooting (1 mile north), Tooting Bec (1 mile north), Merton Abbey (1 mile south-west), Furzedown (1 mile north-east) and Eastfields (1 mile south-east). Further out, we also cover London (6 miles north-east), City of Westminster (7 miles north), Marylebone (7 miles north), Kensington (6 miles north), St Pancras (8 miles north) and Shoreditch (8 miles north-east).
Local landmarks in Colliers Wood
Locally, jobs take us to homes and businesses close to Figge's Marsh, Ensham School and The Royal Standard pub. Colliers Wood has its own railway station: Tooting station. Nearby you’ll also find Grove Hospital (0.6 miles north) and Wandle Industrial Museum (1.2 miles south). For a walk, there’s Henman Hill and Myrna Close.
How the job changes by surface
Windows & doors
Wrong-coloured or messy mastic can be replaced for appearance too, in a colour that suits the frame.
Worktops & kitchens
Old kitchen sealant pulls back from the wall over time. We strip it, degrease the joint and reseal.
Looking after it afterwards
Aftercare is simple, and it makes a real difference:
- Never seal over old silicone
- Keep movement joints clear of mortar and paint
- Use a soft cloth, not a scourer, on silicone
- Run the fan after every shower
Ventilation keeps mould away from the new bead: run the fan during and after showers, or open a window.
Mould trapped under over-sealed joints spreads unseen. When it finally shows, the whole bead needs to come out.
How it works
Once we’re on site, we compare the joints with what we discussed. If we find something unexpected, we talk it through with you first. Most jobs then take a few hours for a typical bath or shower, longer where several layers have been applied. 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.
- 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.
- Next, any mould is treated and the joint dried.
- 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.
Before we arrive
- Clear the area around the work
- Where the joints are inside, avoid wetting them before we arrive
- Mention any parking rules near the property
How to get a quote
Every job is quoted individually. Just phone 0345 464 0079 or drop us an email with the details, and pictures are welcome.
Read more
Should I try it myself first?
Some sealant jobs are within reach of a careful DIYer, such as a straightforward joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
A DIY attempt doesn’t rule out a professional job. We cut it out and start again, so tell us about it when you ask for a quote.
Why it’s worth doing now in Colliers Wood
Another bead over the top won’t fix a failed joint. It cannot bond to what’s underneath, leaving the leak in place and one more layer to cut out later. Damp from a failed joint spreads quietly in older London brickwork and timber, and by the time it shows on a wall or ceiling in Colliers Wood, the repair is bigger than the sealant job would have been.
Combining jobs into one visit usually makes better use of the time than several visits, so it’s worth mentioning everything you’d like done. You’ll get one clear quote for the whole job.
Why choose Mr Mastic in Colliers Wood
- Neat joints and a tidy finish
- Fully insured
- Homes, businesses and hotels
- You choose the colour before work begins
Read our cost guide or what customers say.
Questions from Colliers Wood
I let a flat near Tooting station. Can you help?
Yes, rental work is part of what we do. You can ring 0345 464 0079 or send us an email with the address and a few details, and we will give you a fixed price before any work starts.
Can worn sealant in a flat in Colliers Wood cause a leak downstairs?
Yes, and the first sign is often a stain on the ceiling below. A proper reseal before the leak starts is the easy fix.
When is the sealant fully cured?
Cure times vary by product. We tell you how long to leave it before we go.
Does remedial work come with a guarantee?
Yes, with our 12-month guarantee. If we have pointed out another problem, getting it fixed helps the new joint last.
Do you do commercial work?
Yes. Hotels, offices and other businesses use us and we’re fully insured.
What if the leak is not the sealant?
In that case, we tell you what we have found. You may need a plumber or bathroom fitter before any new sealant goes on.
Do the sealants smell?
Possibly a little. It fades as the sealant cures, and ventilation helps.
Where do you work from?
We work from Crawley. Our applicators cover Colliers Wood.
Nearby places to Colliers Wood
More services for Colliers Wood
Work for landlords, hotels and businesses
Businesses can book us for washrooms, kitchens, offices and more. For commercial premises, we can talk through working times when we quote.
We work for landlords and agents as well as householders. Resealing between tenancies is a simple way to keep a property in good order before the next move-in.