Greater London · England
New Build Mastic in Chelsea Harbour
Plot mastic for developers and snagging failed sealant in new homes for homes and businesses in Chelsea Harbour and across Greater London. Fully insured, ARBOMaster approved and guaranteed for a year.
- Sealant work across a run of new homes
- Internal frame sealant that has split
- Gaps opening as the house dries out and settles
New build mastic for homes and businesses in Chelsea Harbour
We carry out plot mastic and second-fix sealing for builders, and snagging reseals for new-home owners. In both, preparation makes the difference. We work on bathrooms & en suites, show homes and windows & doors, and people most often call us about cracks appearing as a new home settles and skirting joints opening in the first winter.
Across London, commercial floors have movement joints that break down under heavy foot traffic, while new homes need a neat, sound finish around frames, baths and kitchens before handover, in Chelsea Harbour and beyond.
Our work is backed for twelve months, in Chelsea Harbour and everywhere else we cover.
- Location
- Chelsea Harbour (SW6, SW11, SW10)
- Wider area
- Greater London
- Cover
- One year on every job
- Price
- A clear price before we start
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
Chelsea Harbour questions
Can you help a landlord with a rental near Imperial Wharf station?
Yes. We work for landlords and agents as well as householders. You can ring 0345 464 0079 or drop us an email with the details for a clear quote.
Is parking a problem for a job in Chelsea Harbour?
London parking needs a little planning, so let us know about permits, bays or a driveway when you book. The visit is then planned around what’s available.
How long before the joint can be used?
That depends on the sealant used, so please follow the time we give you when we finish.
Should I wait before resealing?
If the seal has failed and water is getting in, do it now. Small gaps that are just cosmetic can be resealed once movement has slowed.
Will you leave a mess?
No. The area is protected while we work and cleaned up afterwards.
Can you work on commercial sites?
Yes. We work in offices, washrooms, hotels and other commercial premises, as well as homes. We can talk about working times when we quote.
Do you take on second-fix sealing for builders?
Yes. Plot mastic and second-fix sealing for developers is part of our work. Send us the plot schedule and we will quote.
What colour sealant will you use?
Most bathroom joints are white or clear, but sealant comes in other colours too. We choose one to suit the room before we begin.
Why deal with it now?
A quick bead over the top of the old sealant can look fine at first, but it will not bond to the old layer. A lasting seal starts with removing the old one completely. 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.
Rather than a set price list, we price the job in front of us: the amount of work, the old material and the access. You’ll know the price before we begin.
Why us?
- ARBOMaster approved applicator
- We agree the colour with you first
- A 12-month guarantee on all work
- White, clear, grey or coloured to suit, where the product allows
Read what affects the cost and our reviews.
Can I do it myself?
If you’ve already had a go yourself, that’s fine. We remove it and do the joint properly, so just mention it when you contact us.
Not every job suits DIY: work at height, external movement joints, fire-rated sealant and large areas call for the right materials, safe access and experience.
New homes and floors in Chelsea Harbour
Much of London’s new housing is flats in larger developments, where snagging may go through the developer or managing agent. The South East is one of the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
As a London address, Chelsea Harbour can be tricky for parking: tell us about permits, visitor bays or off-street space when you book. For new homes near Imperial Wharf station, it’s worth checking the sealant early, while snags are still fresh.
Chelsea Harbour is about 2 miles south-east of Kensington, in Greater London. If you need new build mastic in Chelsea Harbour, please call 0345 464 0079 or email us for a quick quote. We are based in Crawley and cover Greater London. 764 places in Greater London are on our list.
Postcode districts we cover here for new build mastic: SW6, SW11 and SW10. New build mastic is available to properties on Ann Lane, York Road and Lots Road. We also cover the places around Chelsea Harbour: Sands End (1 mile south), Walham Green (1 mile north-west), World's End (1 mile north), Little Chelsea (1 mile north) and Parsons Green (1 mile west). Within a short drive, we also cover London (4 miles north-east), City of Westminster (3 miles north-east), Marylebone (3 miles north-east), St Pancras (4 miles north-east), Shoreditch (6 miles north-east) and Walthamstow (10 miles north-east).
Near you in Chelsea Harbour
We work in homes and buildings around Heatherley School of Fine Art, Lots Road pub and Imperial Park and the streets around them. Nearby too are Langford Primary School (less than half a mile south-west) and Natural History Museum Library and Archives (1.5 miles north). Chelsea Harbour has its own railway station: Imperial Wharf station. Other landmarks nearby include Baynard's Castle (4.3 miles north-east) and Chelsea Stadium Tour And Museum (0.6 miles north-west). The countryside around Chelsea Harbour includes WWT London Wetland Centre and Battersea Park Lake.
Quotes for new build mastic in Chelsea Harbour
We do not publish a price list, because no two jobs are the same. The quote depends on:
- Any working-time requirements on site
- The product the joint needs
- The size of the job
- Any mould that needs treating
Every job is a little different, so each one gets its own quote. The number of joints, how easy they are to reach and the sealant needed all make a difference.
What we need to know
There’s no need for technical detail. Just tell us:
- What’s wrong with the joints now
- Any access issues, like height or stairs
- A few pictures by email, if you can
- The rough size of the job
There’s no standard price list, as no two jobs are quite the same. Instead, your job gets its own clear quote. To arrange one, ring 0345 464 0079 or drop us an email.
Work for landlords, hotels and businesses
We also work for property managers and facilities teams. Several sites can be quoted together, and we’re fully insured for the work.
Hotels need rooms back in use, so we plan the work room by room. Hotel work is part of what we do, alongside homes and businesses.
Looking after it afterwards
How long the joints last depends on use and care. Here’s what we suggest:
- Open a window or run the fan after bathing
- Resist patching a failed seal with a tube from the DIY shop
- Clean sealant with mild detergent, not abrasives
- Look at the sealant regularly in the first couple of years
Keep photos of the joints and any snagging correspondence with your builder. It helps if anything else comes up during the warranty period.
A failed seal in a new home lets water into joists, plasterboard and ceilings. Early resealing keeps the job small.
What we do, step by step
When we get to you, we compare the joints with what we discussed. If we find something unexpected, we talk it through with you first. Most jobs then take anything from a few hours to several days, depending on the number of plots. Parking in much of London is by permit or pay-and-display, so it helps to know what’s near you in Chelsea Harbour. A visitor permit or a nearby bay makes the visit run more smoothly.
- We go through the snagging list or plot schedule and agree the joints to do.
- The old bead comes out in full, with no layer left behind.
- We clean off dust from the build and prime the surfaces where the product needs it.
- 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.
Before we arrive
- Tell us if parking is tricky
- Where the joints are inside, avoid wetting them before we arrive
- On commercial sites, let us know about site rules
Getting a quote
The more we know about the job, the more useful the quote. Let us know the location, the problem and roughly how many joints, and email pictures if that is easy.
Advice
Towns and villages near Chelsea Harbour
Also in Chelsea Harbour
What sealant work can’t fix
Before you book, it’s worth knowing the limits too:
- Damaged fittings that need replacing
- Settlement cracks that need a surveyor
- Baths and trays that move too much for sealant to cope with
If you are not sure, just phone 0345 464 0079 or email us and we’ll give you a straight answer.
Joints and surfaces we work on
- Bathrooms & en suites
- Plot handovers
- Skirting & floors
- Windows & doors
- Kitchens
- Show homes