Greater London · England
New-build mastic & snagging in Plumstead, Greater London
Specialist new build mastic for Plumstead: the right sealant, proper preparation and a neat finish. Ask us for a quick quote.
- Beads laid onto grit and dust from the build
- Kitchen sealant that has pulled off the wall
- Frame joints opening as the plaster dries
New build mastic in Plumstead, done properly
For builders and developers, we work through plots to the schedule you give us. We seal bathrooms, kitchens, windows, doors and skirting so plots are ready to hand over using the right product for each joint. If you have smeared, uneven beads picked up at snagging and cracked sealant around new window and door frames, we can put it right, whatever the surface.
London homes range from new-build flats to period conversions with new floors laid over old boards. Every joint between floor, skirting and threshold has to cope with some movement.
We guarantee the work for a year. If something isn’t right with it in that time, tell us and we will put it right.
- Where
- Plumstead (SE18, SE28, E16)
- Region
- Greater London
- Guarantee
- One year on every job
- Quotes
- A clear quote up front
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
DIY versus a professional finish
A DIY attempt does not rule out a professional job. We remove it and do the joint properly, so tell us about it when you ask for a quote.
If you are set on DIY, put the effort into preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it doesn’t work out, we can still put it right.
Nearby places to Plumstead
More services for Plumstead
Questions from Plumstead
Is parking an issue for new build mastic in Plumstead?
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.
Do you cover Plumstead for new build mastic?
Yes, Plumstead is within the area we cover. Our work covers London and the South East. Just ring 0345 464 0079 or send us an email with a few details of the job.
Is it worth trying it myself?
It depends on the job. Work at height, movement joints, fire-rated gaps and large areas are best left to a professional, while a short indoor joint may be within reach.
Can you reseal over the builder’s sealant?
No. Fresh silicone doesn’t stick to the old layer, so it soon lifts and traps water. The old sealant always comes out first.
Is the work guaranteed?
Yes, always. There’s a 12-month guarantee on every job, large or small.
Do you remove the old sealant?
Yes. Sealing over old sealant is the main reason resealing fails early, so we never do it.
Do you work for landlords and businesses?
Yes, often. Several properties can go on one quote.
Do you have insurance?
Yes. We’re fully insured, and we can confirm the details when we quote.
New homes and floors in Plumstead
Rainfall in the South East is lower than in much of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day. Much of London’s new housing is flats in larger developments, where snags may need reporting through the developer or the managing agent.
If you’ve bought a new home near Plumstead station, the sealant around baths, showers and frames is worth checking in the first year or two.
Plumstead is about 8 miles east of London, in Greater London. If you need new build mastic in Plumstead, please ring 0345 464 0079 or email us for a quick quote. We’re based in Crawley and cover Greater London, Plumstead included. Plumstead is one of 764 places in Greater London where we work. There’s also a page for London, about 8 miles away.
Work in SE18, SE28 and E16 works the same way as everywhere else we cover. Whether your property is on Moy Lane, Love Lane and Tuam Road or anywhere close by, we can help. Being close to the A206, Plumstead is easy for our applicators to reach for new build mastic. Close by, we work in Woolwich (1 mile west), Shooter's Hill (1 mile south-west), East Wickham (1 mile south-east), Charlton (2 miles west) and New Charlton (2 miles west). We also work in nearby towns such as London (8 miles west), City of Westminster (10 miles west), Marylebone (10 miles west), Kensington (12 miles west), St Pancras (9 miles west) and Shoreditch (7 miles west).
Local landmarks in Plumstead
In Plumstead, that means homes and buildings near Shooters Hill Sixth Form College, Plumstead Manor School and Plumstead Common, among other places. There’s a railway station in Plumstead itself: Plumstead station. Other landmarks nearby include British Hospital for Mothers and Babies (1.3 miles west) and Greenwich Castle (3.6 miles west). For a walk, there’s Gilbert's Pit.
The process
You don’t need to clear the whole room or building before we come, just the space around the work. Everything nearby is protected, and the job takes a few hours in a single home in most cases. For a job in Plumstead, parking and access are the things to plan: tell us about permits, visitor bays or off-street space, which floor we’re working on and whether there’s a lift.
- We start by agreeing which joints are on the list, from the snagging sheet or plot schedule.
- We cut out every bit of the failed or messy sealant.
- Surfaces are cleaned of building dust and primed where needed.
- We apply a sealant that suits each joint and tool it to a neat finish.
- Finally, each room is checked and you’re given the cure time.
Before we arrive
- Let us know about parking restrictions
- Tell us about access, such as stairs, a lift or high-level joints
- Move anything stored near the joints
How to get a quote
Getting a quote is simple: let us know what needs doing and where. A few photos by email make the job easier to understand, and we will come back to you with a quote.
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Quotes for new build mastic in Plumstead
Jobs vary more than people expect. What affects the quote:
- How many rooms, windows or areas are involved
- Any mould that needs treating
- How much there is to do
- The type of sealant required
A failed joint rarely gets cheaper to fix by waiting, as water and mould keep getting in. If you are not sure whether it needs doing, call 0345 464 0079 or drop us an email for an honest opinion and a quote.
What we need to know
Before you ask for a quote, have a think about:
- How we’d reach the joints
- The address or postcode of the job
- If it’s domestic, commercial or a hotel
- Roughly how big the job is
Want a quote for new build mastic? Please phone 0345 464 0079 or drop us an email with a few details. You’ll know what we plan to do, and what it will cost, before any work begins.
Common problems we fix in Plumstead
Sealant applied onto damp surfaces doesn’t bond well. Site programmes do not always leave time for joints to dry before the sealant goes on.
Common reasons people contact us are:
- Skirting joints opening in the first winter
- Worktop and upstand sealant coming away
- Sealant applied over dusty or wet surfaces
- Internal frame sealant that has split
Plumstead is in London, so parking needs planning: let us know about parking bays, permits or a driveway.
Questions to ask before you book
- Whether they’re fully insured
- What preparation is included
- How long to leave it before use
- Whether all the old sealant comes out first
When something else is needed
We will always be straight with you, so here’s what sealant cannot fix:
- Structural cracks in walls or ceilings
- Disputes or warranty claims with your builder
- Broken tiles or a split tray
If in doubt, phone 0345 464 0079 or drop us an email and we will say what we think.
Where we work in Plumstead
- Plot handovers
- Kitchens
- Show homes
- Windows & doors
- Skirting & floors
- Bathrooms & en suites
How to look after the new joints
Once the sealant has cured, a few habits help it last:
- Do not seal over failed sealant yourself
- Put sealant faults on your snagging list early
- Open a window or run the fan after bathing
- Keep water off fresh sealant until it has cured
Clean the sealant with a mild detergent and a soft cloth. Keep scourers and harsh chemicals off it.
A failed seal in a new home lets water into joists, plasterboard and ceilings. Early resealing keeps the job small and the new finishes intact.
For landlords and businesses
Mouldy or split sealant often shows up at the end of a tenancy, and it’s easy to sort out between tenants. Several properties can go on one quote.
We regularly work with letting and managing agents. Send the address, what’s needed and the access arrangements.