Greater London · England
West Silvertown New Build Mastic
Plot mastic for developers and snagging failed sealant in new homes for West Silvertown, backed by a 12-month guarantee. Ask us for a quote.
- Gaps opening as the house dries out and settles
- Cracked caulk along new skirting
- New-build shower sealant that has already split
Your questions about new build mastic in West Silvertown
Can you do new build mastic in West Silvertown?
Yes. We work across London and the South East, and West Silvertown is part of that. You can call 0345 464 0079 or drop us an email and let us know what needs doing.
Do you work for landlords with property near Custom House station?
Yes. We work for letting agents and landlords as well as homeowners. Just ring 0345 464 0079 or email us with the address and what needs doing, and we’ll send you a clear quote.
Which products do you use?
It depends on the joint: sanitary silicone where it gets wet, and sealants suited to movement or weather elsewhere. Brands we use include Arbo and Everbuild.
Do you use white or clear sealant?
That depends on what the joint meets: white or clear in most bathrooms, and a colour to suit worktops, frames and floors elsewhere. We’ll agree it with you first.
Will you leave a mess?
Tidy work is part of the job. Nearby surfaces are protected, and we clear up when we are done.
Can you work on commercial sites?
Yes. We’ve worked for hotels, offices and other businesses.
How long will you be here?
That depends on how much there is to do, but as a guide it takes anything from a few hours to several days, depending on the number of plots. We will tell you when we quote.
Is it normal for sealant to crack in a new home?
Lots of new homes see sealant crack early, because the house is drying and settling. Poor preparation at handover adds to it.
About our new build mastic in West Silvertown
For builders and developers, we work through plots to the schedule you give us. Bathrooms, en suites, kitchens, frames and skirting are sealed ready for handover with a sealant suited to each area. If you are dealing with cracks appearing as a new home settles and beads laid onto grit and dust from the build, we can put it right, on bathrooms & en suites, windows & doors and plot handovers alike.
Across London, commercial floors have movement joints that break down under heavy foot traffic, and new homes need their plot mastic finished properly before handover.
Whatever the size of the job, it’s backed by our 12-month guarantee in West Silvertown and across Greater London.
- Location
- West Silvertown (E16, SE10)
- Wider area
- Greater London
- Guarantee
- One year on every job
- Quote
- A clear quote up front
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Why it’s worth doing now in West Silvertown
For developers, getting the sealant right first time saves return visits. Every return visit for a failed seal takes time, and they’re avoidable with good preparation. In a London flat, a failed joint rarely stays your problem alone: water from a shower or window joint can reach the flat below, and gaps in fire-stopping matter to everyone in the building.
A few things move the cost up or down: the old material and how easily it comes out, whether mould needs treating, and whether the work is at height. Your quote takes all of that into account.
What you get with us
- More than 20 years in sealant work
- One-year guarantee on every job
- Rated 4.9 stars on Google
- White, clear, grey or coloured to suit, where the product allows
Can I do it myself?
The difference is mostly in the preparation and the product. Joints are cleaned back to sound surfaces and dried, and the sealant is matched to the joint and its conditions, then guaranteed for a year.
If you’ve already had a go yourself, that is fine. We remove it and do the joint properly, so tell us about it when you ask for a quote.
What affects the cost of new build mastic
The price is agreed before any work begins. It’s based on:
- The old material and how stubborn it is
- How many rooms, windows or areas are involved
- Any mould that needs treating
- Whether the work is at height
We do not show prices on the website, because the cost depends so much on the job itself. For a quick quote, please call 0345 464 0079 or email us.
What we need to know
A few details help us give you an accurate quote. When you get in contact, it helps to mention:
- What the problem is, such as mould, gaps, leaks or cracking
- Where the property is
- If it’s domestic, commercial or a hotel
- How many joints, rooms or windows are involved
We quote each job on its own. Just call 0345 464 0079 or drop us an email with the details and send pictures if you have them.
How it works
The work is kept neat and contained to the area we are working on, so you can carry on as normal. Expect the work to take a few hours for most snagging lists, longer for a run of plots, and we tell you how long to leave it before we go. In West Silvertown, flats, stairs and shared entrances are part of the routine. If the building has a concierge, managing agent or access rules, tell us when you book.
- First, the list of joints is agreed from your snagging sheet or plot schedule.
- Every bit of the old builder’s sealant is cut out, with no layer left behind.
- Joints are vacuumed and cleaned of building dust.
- We prime where needed and apply a sealant suited to each joint.
- We tool every joint neatly and tell you when each area can be used.
How to prepare
- Try not to wet indoor joints just before the visit
- For business premises, tell us about site rules or sign-in
- Let us know about parking restrictions
Get a quote
We do not publish a price list. Instead, your job gets its own clear quote. To arrange one, ring 0345 464 0079 or drop us an email.
Advice
Landlord and commercial work in West Silvertown
We regularly work with letting and managing agents. Tell us the address, the job and how access works.
Hotels need rooms back in use, so we plan the work room by room around your bookings where we can. We’ve worked in hotels as well as homes and businesses.
How the job changes by surface
Skirting and floors
New homes often develop a gap between skirting and floor. A flexible sealant closes it without cracking like caulk.
Kitchens
Sink joints are wet all the time. We use a sealant suited to kitchens suited to the job.
Towns and villages near West Silvertown
What else we do in West Silvertown
Do you need new build mastic in West Silvertown?
If plaster or screed was still damp when it was sealed, the bond suffers. On a busy site, joints aren’t always given time to dry before the sealant goes on.
Signs it’s time to call us include:
- Beads laid onto grit and dust from the build
- Joints pulling apart as timber shrinks
- Untidy sealant flagged on a snagging list
- Cracked sealant around new window and door frames
As a London address, West Silvertown can be tricky for parking: tell us about permits, visitor bays or off-street space when you book.
What your quote should include
- Whether you can choose the colour
- What product goes in the joint
- When the joint can take water or movement
- Are they insured?
New build mastic in West Silvertown: local notes
Much of London’s new housing is flats in larger developments, where snagging may go through the developer or managing agent. 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.
If you’ve bought a new home near Custom House station, the sealant around baths, showers and frames is worth checking in the first year or two.
West Silvertown is about 1 mile south of Canning Town, in Greater London. Jobs in West Silvertown get the same care as everywhere else we work: the old material taken out, joints prepared properly and a 12-month guarantee. West Silvertown is one of 764 places in Greater London we cover.
We work across the E16 and SE10 postcode area for new build mastic and the streets around it. If you need new build mastic at a property on Bell Lane, Knights Road and Bradfield Road or anywhere close by, our applicators can take on the job. If you’re just outside West Silvertown, we cover Silvertown (1 mile south-east), Custom House (1 mile north-east), Royal Docks (1 mile east), Canning Town (1 mile north) and Limmo Peninsula (1 mile north-west). Within a short drive, we also cover London (5 miles west), City of Westminster (8 miles west), Marylebone (7 miles west), Kensington (10 miles west), St Pancras (6 miles west) and Shoreditch (5 miles west).
Landmarks near West Silvertown
We work in homes and buildings around The Royal Docks Community School, Royal Docks Academy and The Tidal Basin Tavern and the streets around them. The closest station to West Silvertown is Custom House station, about 0.5 miles north. Nearby you will also find Albert Dock Seamen's Hospital (0.8 miles north-east) and Gallions Reach Shopping Park (2.4 miles east). Not far away are Gilbert's Pit and Tower Hill.