Greater London · England
Remedial Sealant in North Woolwich
Removing failed, mouldy or leaking sealant and putting it right in North Woolwich, with a one-year guarantee on every job. Ask us for a quote.
- Mould trapped under a layer of silicone
- Over-sealed joints coming away
- Gaps opening along the back of the worktop
Remedial sealant in North Woolwich, done properly
Remedial jobs in North Woolwich normally fall into a few patterns: sealant over sealant, mould under the bead, leaks that come back and movement joints that have split. Each is stripped back and done again properly. We work on failed movement joints, shrunken worktop sealant and leaking tray & enclosure joints, and the jobs we see most are leaks that keep coming back after resealing and a second bead peeling off the first.
Across London, a large share of homes are flats, conversions or mansion blocks, and many bathrooms sit right above someone else’s ceiling. That makes worn sealant and cracked grout in North Woolwich more than a cosmetic job.
The work is guaranteed for twelve months. If there’s a problem with our work within the year, let us know and we will sort it.
- Place
- North Woolwich (SE18, E16, E6)
- Wider area
- Greater London
- Cover
- 12 months on all our work
- Quote
- A clear quote up front
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
How we quote for remedial sealant
You’ll get a clear quote before work begins. It takes into account:
- Any working-time requirements on site
- The type of sealant required
- How many areas need sealing
- Whether the work is at height
The cost depends on the size of the job, how much old material has to come out and access to the work. You will have a clear quote before any work starts, so you know where you stand.
Asking for a quote
What to tell us when you ask for a quote:
- What the problem is, such as mould, gaps, leaks or cracking
- Whether it’s a home or a business
- Pictures of the joints, sent by email
- Where the property is
To get a quote, ring 0345 464 0079 or send us an email with the location and a short description of the problem. You will have a clear quote before we start.
Towns and villages near North Woolwich
More services for North Woolwich
How to look after the new joints
Simple care keeps the joints in good condition. We recommend:
- Use a soft cloth, not a scourer, on silicone
- Never seal over old silicone
- Keep an eye on the ceiling below the bathroom
- Keep the room well ventilated
If the joint ever needs renewing, have it cut out, not sealed over. Over-sealing is how many remedial jobs start.
If a joint has failed more than once, stop resealing it. Get the cause found first, otherwise the next attempt will fail too.
Common problems we fix in North Woolwich
Products get mixed up: acrylic caulk in a wet area, a general-purpose sealant on a moving joint, or an acetoxy silicone on natural stone or some metals. None of them last.
Any of these means the joints need attention:
- Smears and lumps from a botched reseal
- Sealant that came away because the surface wasn’t prepared
- Decorators’ caulk around a bath or shower
- Black mould underneath the bead
As a London address, North Woolwich can be tricky for parking: tell us about permits, visitor bays or off-street space when you book.
What to look for in a quote
- What product goes in the joint
- Who turns up on the day
- Whether they’re fully insured
- Is VAT in the price?
The process
Our applicators work methodically: protect, prepare, seal, tidy. For most jobs that takes a few hours for most joints, depending on how much old sealant has to come out. In North Woolwich, 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.
- We clean and degrease the joint and look for signs of movement or water.
- 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.
Preparing for the visit
- Try not to wet indoor joints just before the visit
- For business premises, tell us about site rules or sign-in
- Move anything stored near the joints
Ask for a quote
We quote each job on its own, so the first step is telling us about yours. Just phone 0345 464 0079 or drop us an email with the details.
Advice
What the job involves on each surface
Mouldy bath & shower sealant
Where mould keeps coming back, ventilation is generally part of the cause. Along with resealing, we will mention if the room needs better ventilation.
Over-sealed & botched joints
A botched joint can hide two or three layers of sealant, including the smears and film on surrounding tiles. New sealant needs a fully clean surface.
Why deal with it now?
Remedial work takes longer than a straight reseal, but not by much: the work takes a few hours, depending on how many layers have to come out. It’s far less disruption than resealing the same joint again and again. In a flat in North Woolwich, failed sealant seldom stays inside your own four walls: water can reach the neighbours below, and gaps in fire-rated joints affect the whole building.
Every job is a little different, so we quote each one individually. The number of joints, how easy they are to reach and the sealant needed all make a difference, and we will explain the quote if you ask.
Why us?
- 20+ years of sealant experience
- Any old sealant cut out fully, not covered over
- White, clear, grey or another colour, product permitting
- Experience in homes, commercial sites and hotels
Take a look at our cost guide or what customers say.
Remedial sealant around North Woolwich
London has a lot of flats and conversions, and a failed shower or bath seal in one can show up on the ceiling below, which is why it’s worth fixing early. London’s water is hard, so limescale builds up on sealant, grout and fittings, and it has to be cleaned off before new sealant goes in.
Homes close to St John's Church include some older properties, and walls and floors in older homes can move, and sealant and grout show it first. If you look after a building such as Oasis Academy Silvertown, its toilets, changing areas and kitchens need their sealant renewed like any other building’s.
North Woolwich is about 1 mile north of Woolwich, in Greater London. We provide remedial sealant to homes and businesses in North Woolwich, as part of our work across Greater London. Our area takes in 764 places across Greater London. For nearby work, see our London page, about 7 miles away.
We cover every part of SE18, E16 and E6 for remedial sealant and the streets around it. If you need remedial sealant at a property on Drew Road, Tate Road and Pier Road or a nearby road, we can help. If you are just outside North Woolwich, we cover Cyprus (1 mile north), Royal Docks (1 mile north-west), Beckton (1 mile north-east), Silvertown (1 mile west) and Custom House (1 mile west). Larger places within reach include London (7 miles west), City of Westminster (9 miles west), Marylebone (9 miles west), Kensington (11 miles west), St Pancras (8 miles west) and Shoreditch (6 miles west).
Around North Woolwich
We work in homes and buildings around Beckton District Park, Drew Primary School and The Mitre pub, among other places. For rail, the closest station is Woolwich Dockyard station, roughly 0.7 miles south of the centre. Well-known places in the area include British Hospital for Mothers and Babies (0.8 miles south-west) and Gallions Reach Shopping Park (1.1 miles north-east). Not far away are Gilbert's Pit.
When it isn’t the sealant
New sealant cannot fix everything, and we’d rather say so up front. It won’t solve:
- Water damage behind tiles that needs a tiler
- Older mastics that may need an asbestos check before removal
- Movement from fittings that are not supported
If you are not sure, just phone 0345 464 0079 or email us and we’ll give you a straight answer before you book.
Surfaces we seal
- Mouldy bath & shower sealant
- Shrunken worktop sealant
- Leaking tray & enclosure joints
- Failed movement joints
- Expansion joints
- Botched or over-sealed joints
Questions from North Woolwich
Do you work in hotels near North Woolwich?
Yes. Hotel and guest-house work is part of what we do. Jobs can be programmed room by room, with out-of-hours working possible to arrange.
Can you help a landlord with a rental near Woolwich Dockyard station?
Yes, we work for landlords and letting agents. You can phone 0345 464 0079 or email us with the address and a few details, and we will give you a fixed price before work begins.
Can you strip sealant from an acrylic tray safely?
Yes. Residue is removed with a product suited to the surface rather than scraped hard.
Do you fix expansion and movement joints?
Yes. Backing sets the depth and stops the sealant sticking to the back, which lets it stretch.
Do you hold any approvals?
Yes. Mr Mastic is an ARBOMaster approved applicator, and we’re fully insured.
Is it worth trying it myself?
It depends on the job. High-level, external movement and fire-rated joints are professional jobs, while a short indoor joint may be within reach.
What if the leak is not the sealant?
Then we explain what we’ve found. A plumber or fitter may be needed before any new sealant goes on.
How long will it take to strip and reseal the joint?
The number of joints and layers decides it. We will tell you before any work starts.