Greater London · England
Colindale Remedial Sealant
Remedial sealant for Colindale, by sealant specialists with 20+ years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Mould trapped under a layer of silicone
- Kitchen joints letting water behind the worktop
- Sealant applied over old sealant that has lifted
Remedial sealant in Colindale, done properly
If a joint fails again and again, something is causing it. Movement, the wrong product or a leak from somewhere else will defeat even a perfect bead. We look for the cause before we reseal. If you have sealant peeling off a dusty or damp surface and leaks that keep coming back after resealing, we can put it right.
Much of London’s older housing is Victorian and Edwardian terraces, many of them now split into flats, with bathrooms fitted into whatever space was available. A compact bathroom that steams up every day is hard on silicone and grout, and homes in Colindale are no different.
We guarantee the work for a year. If there’s a problem with our work within the year, let us know and we will sort it.
- Place
- Colindale (NW9, NW4, HA8)
- Wider area
- Greater London
- Cover
- 12 months on all our work
- Quote
- A clear quote up front
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
Different surfaces, different methods
Mouldy bath & shower sealant
Mould that has grown into silicone does not clean out for good. All of it comes out, and the joint is treated and dried before anti-fungal sanitary silicone goes in.
Leaking trays & enclosures
A cracked tray, failed valve or leaking waste needs a different fix. We will tell you what we find.
Remedial sealant in Colindale: local notes
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 Hendon station? Then a joint that keeps failing is best fixed properly while the property is empty. For site and facilities teams at buildings such as Colindale Primary School, we reseal washrooms and kitchens in schools and businesses as well as homes.
Colindale is about 1 mile south-east of Burnt Oak, in Greater London. From the centre of Colindale to the outskirts, remedial sealant is available for homes and businesses alike, from flats and houses to offices and hotels. Our Greater London coverage runs to 764 places, and Colindale is one of them. For nearby work, see our London page.
Here we cover the NW9, NW4 and HA8 postcode area for remedial sealant. Remedial sealant is available to properties on Cecil Road, Booth Road and Ajax Avenue. Colindale sits on or near the A5150. Neighbouring places we cover for remedial sealant include West Hendon (1 mile south), The Hyde (1 mile south), The Burroughs (1 mile east), Hendon (1 mile south-east) and Kingsbury (1 mile south-west). We also work in nearby towns such as London (9 miles south-east), City of Westminster (7 miles south-east), Marylebone (7 miles south-east), Kensington (7 miles south), St Pancras (7 miles south-east) and Shoreditch (9 miles south-east).
Around Colindale
In Colindale, that means homes and buildings near Sunny Hill Park, Saracens High School and Kisharon College, among other places. For rail, the closest station is Hendon station, roughly 1 mile south-east of the centre. A little further out are Edgware Community Hospital (1.3 miles north-west) and Brent Cross Shopping Centre (1.5 miles south-east). The countryside around Colindale includes Darland's Lake and Parliament Hill.
Nearby places to Colindale
Also in Colindale
When to call us in Colindale
Silicone only bonds to surfaces that are clean and dry. Residue, moisture or dust left in the joint weaken the bond, and the joint starts to come away early.
Any of these means the joints need attention:
- Over-sealed joints coming away
- Decorators’ caulk around a bath or shower
- Thick, messy sealant smeared over tiles
- Dark patches showing through the sealant
Colindale is in London, so parking needs planning: tell us about permits, visitor bays or off-street space when you book.
What to look for in a quote
- How the joint is cleaned and prepared
- What guarantee comes with the work
- Who does the work, and how experienced they are
- Is VAT in the price?
Should I try it myself first?
What a professional job adds is preparation and the right product. We take joints back to clean, dry surfaces, and the sealant is chosen for how the joint moves and where it is, then guaranteed for a year.
Some jobs are best left to a professional: work at height, external movement joints, fire-rated sealant and large areas need the right product, the right access and the right method.
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.
Letting agents often deal with us directly. Tell us the address, the job and how access works and we’ll quote.
What affects the quote in Colindale
Call for a quick quote. What matters most is:
- Working hours on commercial sites
- How many rooms, windows or areas are involved
- The old material and how stubborn it is
- Any mould that needs treating
Leaving a failed joint usually makes the job bigger, not smaller, because water and mould keep working on it. If you’re not sure whether it needs doing, phone 0345 464 0079 or email us for an honest opinion and a quote.
Helping us quote
When you call or email, these details help:
- If someone has resealed it before
- Where the job is, and your postcode
- The problem you’ve noticed
- How many joints, rooms or windows are involved
Want a quote for remedial sealant? Please phone 0345 464 0079 or send us an email and tell us about the job. We will explain what we’d do and give you a clear price before we start.
What we can’t put right
In fairness, there are a few things sealant will not fix:
- Cracks in the fitting rather than the joint
- Movement from fittings that are not supported
- Old mastic in a building from before 2000 that should be checked for asbestos before it’s disturbed
If you’re not sure, just phone 0345 464 0079 or send us an email and we’ll give you a straight answer before booking.
Surfaces we seal
- Botched or over-sealed joints
- Leaking tray & enclosure joints
- Mouldy bath & shower sealant
- Shrunken worktop sealant
- Failed movement joints
- Expansion joints
FAQs for Colindale
Is parking an issue for remedial sealant in Colindale?
Parking in Colindale, as in most of London, takes a little planning: a visitor permit or a nearby bay makes the day run more smoothly.
Do you take on hotel work around Colindale?
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.
What do you need from me for a quote?
Let us know what needs doing and where, plus photos if you have them. If we need more, we’ll ask.
What if the leak is not the sealant?
You’ll hear it from us. If it’s a cracked tray, a failed valve or a leaking waste, resealing won’t fix it, and we won’t reseal for the sake of it.
Can I add another job to the visit?
Yes, and it often makes sense. Doing several areas at once is generally more efficient.
Are you an approved applicator?
Yes. We’re ARBOMaster approved, the scheme for applicators of Arbo sealants.
How long will it take to strip and reseal the joint?
A little longer than a standard reseal. Most jobs take a few hours, and we confirm the time with your quote.
Are you fully insured?
Yes. We are fully insured, with over 20 years’ experience in sealant work.
What happens on the day
When we get to you, 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 most joints, depending on how much old sealant has to come out. In Colindale, as in most of London, parking needs a little planning. A visitor permit or a nearby bay makes the visit run more smoothly.
- First we work out whether the problem is the sealant, movement or a leak.
- Old beads and residue are removed down to clean surfaces.
- Mould is treated and the joint dried.
- We reseal with a product suited to the joint, backed where needed.
- The joint is tooled and you’re told about anything else we found.
Before we arrive
- Let us know if you’ve seen damp or leaks
- Let us know about stairs, lifts or work at height
- Where the joints are inside, avoid wetting them before we arrive
How to get a quote
If you’re in Colindale and need remedial sealant, phone 0345 464 0079 or email us. Tell us what the problem is and where, and we’ll agree the price before any work begins.