Greater London · England
New-build mastic & snagging in Charlton, Greater London
We cover Charlton for plot mastic for developers and snagging failed sealant in new homes. Old material cut out, joints cleaned and sealed neatly.
- Plot mastic for developers ahead of handover
- Smeared, uneven beads picked up at snagging
- New-build shower sealant that has already split
Work for landlords, hotels and businesses
If you manage several properties in or around Charlton, jobs at different addresses can be quoted together. Just tell us the addresses and what each one needs, and photos by email help.
We regularly work with letting and managing agents. Send the address, what’s needed and the access arrangements.
How we handle new build mastic in Charlton
Failed shower seals, gaps along the skirting and messy beads are common items on a new-home snagging list. While the builder’s snagging or warranty period runs, report it to them first. We work on skirting & floors, kitchens and show homes, and common reasons people get in touch are sealant that never bonded to the surface and cracks appearing as a new home settles.
New flats are going up across London, many of them in larger developments. Snagging there often goes through the developer or managing agent, and shower seals that fail early, skirting joints that open up and gaps at thresholds are all common snags.
A one-year guarantee comes with the work, just as it does everywhere we cover.
- Place
- Charlton (SE7, SE18)
- Region
- Greater London
- Cover
- One year on every job
- Quotes
- A clear quote up front
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
Leave it or put it right?
A tube of sealant from the DIY shop won’t fix the cause: dust, no primer and old sealant left in the joint. Cutting out, cleaning and priming are what make the difference. In older London homes, water behind a failed joint soaks into brick and timber without much sign, and once it shows in Charlton, the repair is bigger than a sealant job.
What you pay reflects the work, not guesswork. That’s why we ask about the job first and give you a clear price before we start.
Why Charlton clients choose us
- Anti-fungal sanitary silicone in wet areas
- White, clear, grey or coloured to suit, where the product allows
- An ARBOMaster approved applicator
- We agree the colour with you first
Read our cost guide or customer reviews.
What new build mastic looks like in Charlton
Compared with the north and west, the South East gets less rain, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast. Much of London’s new housing is flats in larger developments, where snagging may go through the developer or managing agent.
Charlton is in London, so parking needs planning: tell us about permits, visitor bays or off-street space when you book.
Charlton is about 2 miles west of Plumstead, in Greater London. From the centre of Charlton to the outskirts, new build mastic is available for homes and businesses alike. We cover 764 towns and villages across Greater London, large and small. London is on our list too, around 6 miles away.
Every address in SE7 and SE18 is covered for new build mastic. Local streets include Floyd Road, Guild Road and Priolo Road, and we cover them all. Nearby, we also carry out new build mastic in New Charlton (1 mile north-west), Westcombe Park (1 mile west), Woolwich (1 mile east), Vanbrugh Park Estate (1 mile south-west) and Kidbrooke (2 miles south). Larger places within reach include London (6 miles west), City of Westminster (8 miles west), Marylebone (8 miles west), Kensington (10 miles west), St Pancras (7 miles west) and Shoreditch (6 miles north-west).
Near you in Charlton
In Charlton, that means homes and buildings near Charlton Park, Wildwood Montessori School and Royal Greenwich Trust School and the streets around them. Charlton has its own railway station: Charlton station. Nearby you will also find British Hospital for Mothers and Babies (0.5 miles east) and Gallions Reach Shopping Park (2.3 miles north-east). Not far away are Gilbert's Pit.
What else we do in Charlton
Quotes for new build mastic in Charlton
For a quick quote, just ask. What matters most is:
- The number and length of the joints
- How easy the joints are to reach
- Whether old sealant or filler has to be cut out
- The number of rooms or windows
Commercial jobs are quoted on the same basis as homes: the amount of work, the access and the products needed, plus any working-time requirements on site. Call for a quick quote and we’ll go through it with you.
What we need to know
When you call or email, these details help:
- Roughly how big the job is
- Photos by email, if that is easy
- The type of property
- If someone has resealed it before
We do not publish a price list, because every job is different. Instead, your job gets its own clear quote. To arrange one, phone 0345 464 0079 or send us an email.
What the job involves on each surface
Kitchens
Worktops in new homes can move slightly as the house dries, opening gaps behind the upstand. We reseal them with a flexible sealant.
Plot handovers
Developers can send the plot schedule and specification. Sealant work across the plot is covered as agreed.
What happens on the day
When we get to you, we check the joints match what you told us. If anything is different, we explain it before carrying on. After that, the work takes anything from a few hours to several days, depending on the number of plots. In Charlton, flats, stairs and shared entrances are part of the routine. Mention any building rules, key holders or managing agents when you book.
- First we work through your snagging list or plot schedule with you.
- We cut out every bit of the failed or messy sealant.
- Each joint is cleaned of dust and grit, then primed if required.
- A sealant chosen for each area goes in and is tooled smooth.
- We check every joint and tell you how long each needs to cure.
Getting ready for the visit
- Mention any tricky access
- Mention any sign-in or site rules at work premises
- Tell us about any previous sealing or DIY attempts
How to get a quote
Call for a quick quote, or send an email if you’d rather. Tell us about the joints that need doing and we’ll explain what’s involved.
Advice
FAQs for Charlton
Can you help a landlord with a rental near Charlton station?
Yes. We work for letting agents and landlords as well as householders, and several properties can go on one quote. You can call 0345 464 0079 or send us an email with the details for a clear quote.
Can parking be tricky for a visit in Charlton?
Parking in Charlton, as in most of London, takes a little planning: a visitor permit or a bay close to the door helps a lot.
Do you guarantee your work?
Yes. Every job comes with our one-year guarantee.
Where do you work from?
Our base is Crawley. Our area covers South East England, London and Scotland.
What do you need from me for a quote?
Let us know what needs doing and where, plus photos if you have them. We’ll ask anything else we need to know.
Will the old sealant be removed?
Yes. Sealing over old sealant is the main reason resealing fails early, and it’s something we never do.
Should I go to my builder first?
If you are still within the builder’s snagging or warranty period, report it to them first. If it is not sorted, or keeps failing, get in touch with us.
Do you do commercial work?
Yes, regularly. We can plan bigger jobs in stages to suit the site.
Honest limits
We won’t take on work that won’t last, so here’s what sealant cannot put right:
- Structural cracks in walls or ceilings
- Broken tiles or a split tray
- Leaking fittings rather than failed sealant
Not sure which it is? You can call 0345 464 0079 or send us an email and we’ll tell you honestly.
Joints and surfaces we work on
- Kitchens
- Bathrooms & en suites
- Windows & doors
- Skirting & floors
- Show homes
- Plot handovers
When to call us in Charlton
Later trades and the final clean can damage fresh sealant. A bead disturbed before it has cured may never seal properly, and the problem shows up after you move in.
Any of these means the joints need attention:
- New-build shower sealant that has already split
- Skirting joints opening in the first winter
- Plot mastic for developers ahead of handover
- Frame joints opening as the plaster dries
If you’ve bought a new home near Charlton station, the sealant around baths, showers and frames is worth checking in the first year or two.
What your quote should include
- What happens if they find a problem under the old sealant
- Is the old sealant removed completely?
- When the joint can take water or movement
- How the colour is chosen