Greater London · England
Bathroom & kitchen resealing in Crossness, Greater London
Professional bathroom resealing in and around Crossness, with every bit of old sealant taken out first.
- A messy, uneven bead from a previous reseal
- Sealant that has split, shrunk or peeled away
- Mouldy sealant that has gone black
Work for landlords, hotels and businesses
Businesses can book us for washrooms, kitchens, offices and more. On commercial sites, working times can be discussed when we quote.
Mouldy or split sealant often shows up at the end of a tenancy, and it’s quick to put right between tenancies. Several properties can go on one quote.
How we handle bathroom resealing in Crossness
Mr Mastic has more than 20 years’ experience of sealant work, and our applicators reseal bathrooms and kitchens across Crossness. We’re ARBOMaster approved and fully insured, and the work comes with a 12-month guarantee. If you have water escaping at the shower enclosure and sealant that has split, shrunk or peeled away, we can help.
In much of London, period terraces have been converted into flats over the years, and bathrooms were often squeezed into small rooms. A compact bathroom that steams up every day is hard on silicone and grout.
We stand behind the work with a 12-month guarantee.
- Where
- Crossness (SE2, SE28, DA18)
- Region
- Greater London
- Guarantee
- 12 months on all our work
- Quotes
- A clear quote up front
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Why it’s worth doing now in Crossness
Most of the work in a good reseal happens before any silicone goes on: cutting out every trace of the old bead, cleaning, treating mould and letting the joint dry. Skip those steps and even the best silicone fails early. Damp from a failed joint spreads quietly in older London brickwork and timber, and once it shows in Crossness, the repair is bigger than a sealant job.
Combining jobs into one visit is normally more efficient than separate visits, so it’s worth mentioning everything you’d like done. You’ll get one clear quote for the whole job.
What you get with us
- Anti-fungal sanitary silicone in wet areas
- An ARBOMaster approved applicator
- Neat joints and a tidy finish
- A choice of colours where the product allows
Read what affects the cost or our reviews.
What happens on the day
There isn’t much for you to do on the day. Point us to the joints and we’ll get on with it. The work itself takes two to three hours for a typical bath, depending on how much old sealant there is from start to finish. 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.
- Protection goes down around the bath, shower or worktop.
- Old sealant is sliced away and the residue removed.
- Mould is treated, then the joint is left to dry thoroughly.
- Baths are filled first, then anti-fungal sanitary silicone is applied in a colour to suit.
- The joint is finished neatly and we explain when it can get wet.
Getting ready for the visit
- Tell us about access, such as stairs, a lift or high-level joints
- Mention if the joints have been sealed before
- Keep children and pets away from the work area
Getting a quote
Asking for a quote is easy: let us know the job and the location. A few photos by email make the job easier to understand, and we will come back to you with a quote.
Read more
Common problems we fix in Crossness
Silicone needs a clean, dry surface without any grease to stick to. Traces of soap, bath oil and old sealant stop it gripping, so a rushed job can start to lift early.
It’s worth asking for a quote if you see:
- New sealant laid over old sealant that is now lifting
- Damp behind the bath or under the tray
- Cracked, shrunken or lifting silicone
- A joint torn by a bath that flexes
Managing a site like St John Fisher Catholic Primary School? Then washroom and kitchen sealant there needs the same care as at home, and schools and businesses are part of our work as well as homes.
Comparing quotes
- How the colour is chosen
- Whether they’re fully insured
- Who does the work, and how experienced they are
- How the surfaces are prepared before sealing
Different surfaces, different methods
Wet rooms
Not every wet room leak is a sealant problem. We check the joints and say so if the fault looks to be elsewhere.
Shower trays & enclosures
There are usually two jobs in a shower: the tray-to-wall joint and the enclosure joints. Both get soaked every time the shower runs, so each is cut out and renewed with anti-fungal sanitary silicone.
What bathroom resealing looks like in Crossness
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.
Crossness is in London, so parking needs planning: tell us about permits, visitor bays or off-street space when you book. If you let a flat or house near Abbey Wood station, fresh sealant around the bath, shower and sink between tenancies helps a property present well and keeps leaks at bay.
Crossness is about 2 miles north-west of Erith, in Greater London. We provide bathroom resealing to homes and businesses in Crossness, as part of our work across Greater London. Across Greater London, we cover 764 places, Crossness among them. We also work in London, about 10 miles from Crossness.
We work across the SE2, SE28 and DA18 postcode area for bathroom resealing. Local streets include Kale Road, Haldane Road and Seacourt Road. Crossness is on the A2016, so it’s easy for us to get to with everything needed for bathroom resealing. We also cover the places around Crossness: Thamesmead (1 mile north-west), Dagenham Dock (1 mile north), Barking Riverside (2 miles north-west), Hornchurch Marshes (2 miles north-east) and Dagenham Green (2 miles north). Within a short drive, we also cover London (10 miles west), City of Westminster (12 miles west), Marylebone (12 miles west), Kensington (14 miles west), St Pancras (11 miles west) and Shoreditch (9 miles west).
Local landmarks in Crossness
We work in homes and buildings around Lesnes Abbey Woods, Harris Garrard Academy and Belvedere Working Mens Club pub and the streets around them. Crossness’s nearest station is Abbey Wood station, about 0.8 miles south-west of the centre. A little further out are Erith and District Hospital (2.1 miles south-east) and Gallions Reach Shopping Park (2.4 miles west). Not far away are Crossness Nature Reserve.
Places near Crossness
More services for Crossness
Honest limits
We will not take on work that won’t last, so these are the limits:
- Failed grout lines across the wall
- Water coming from the plumbing rather than the joint
- A cracked shower tray or bath (that needs repair or replacement)
Not sure which it is? You can phone 0345 464 0079 or drop us an email and we’ll tell you honestly before booking.
Joints and surfaces we work on
- Sinks & splashbacks
- Shower trays & enclosures
- Wet rooms
- Basins & vanity units
- Baths
- Kitchen worktops & upstands
Common questions in Crossness
Is parking a problem for a job in Crossness?
It can be, so it helps to tell us about permits, visitor bays or off-street space when you book. That way the visit can be planned around it.
I live in a flat in Crossness. Can a failed seal leak into the flat below?
Yes, and the first sign is often a stain on the ceiling below. Cutting out the old sealant and laying a new bead early stops it getting that far.
Will the old sealant be removed?
Yes. Sealing over the old bead is the commonest cause of early failure, so we never do it.
Can new silicone go straight over the old?
No. Sealing over the top looks fine for a few weeks, then lifts. We remove the old bead completely before resealing.
Does the resealing come with a guarantee?
Yes, for 12 months. Good ventilation and gentle cleaning help it last.
Are you an approved applicator?
Yes. ARBOMaster is the approved applicator scheme for Arbo sealants, and we are part of it.
Do you reseal kitchen worktops and sinks too?
Yes. Kitchen joints get extra degreasing before the new bead goes on, then we reseal in a colour to suit.
What do you put in the joint?
Quality sealants from brands including Arbo and Everbuild, picked for each joint. We’ll tell you what we’re using and why.
DIY sealant or a professional job?
Too much sealant is as bad as too little. A heavy bead looks messy and copes badly with movement, and the joint depth matters as much as the finish.
The difference is mostly in the preparation and the product. We take joints back to clean, dry surfaces, and the sealant is chosen for how the joint moves and where it is, and the work is guaranteed for a year.