Greater London · England
New Build Mastic in East Sheen
Our applicators work in East Sheen on plot mastic for developers and snagging failed sealant in new homes. Old material cut out, joints cleaned and sealed neatly and every job guaranteed for a year.
- Gaps between new skirting and floors
- Kitchen sealant that has pulled off the wall
- Frame joints opening as the plaster dries
New build mastic in East Sheen
A new house keeps drying out and settling for its first couple of years. Timber dries and shrinks, and baths and trays settle, so sealant that was laid quickly before handover often cracks. If you have smeared, uneven beads picked up at snagging and skirting joints opening in the first winter, we can help, whatever the surface.
New flats are going up across London, many of them in larger developments. In a new development, snags are often reported through the developer or the managing agent, and shower seals that fail early, skirting joints that open up and gaps at thresholds are all common snags.
Every job is covered by our one-year guarantee, wherever you are in Greater London.
- Where
- East Sheen (SW14, SW13, SW15)
- Region
- Greater London
- Guarantee
- 12 months on all our work
- Quote
- Quoted before any work starts
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
FAQs for East Sheen
Is parking a problem for a job in East Sheen?
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.
Can you help a landlord with a rental near Mortlake station?
Yes. We work for letting agents and landlords as well as householders. Just call 0345 464 0079 or send us an email with the address and what needs doing, and we’ll give you a clear quote.
Can you work from my snagging list?
Yes. Send us the sealant items on the list, with photos if you can. We’ll flag anything that needs another trade.
What information do you need?
A short description and the location, plus photos if you have them. If we need more, we’ll ask.
Is it normal for sealant to crack in a new home?
New homes dry out and move in their first couple of years, and sealant is often applied quickly onto dusty surfaces. Either can make it fail early.
How much does new build mastic cost in East Sheen?
It depends on the job, so we quote each one individually. For a quick quote, ring 0345 464 0079 or drop us an email with a short description of the job.
Is there any odour?
There can be a smell while the sealant cures, but it fades. Opening a window helps.
My new home is still under warranty. Should I contact you?
Start with the builder if you’re in the snagging or warranty period. If it is not resolved, we can reseal it properly.
Quotes for new build mastic in East Sheen
We quote each job individually. These are the things that affect it:
- Which sealant suits the joint
- Whether the work is at height
- The size of the job
- The number of rooms or windows
The cost depends on the size of the job, how hard the old material is to remove and access to the work. We give a clear quote before any work starts.
What to tell us for a quote
To make quoting easier, please include:
- If someone has resealed it before
- The type of property
- Pictures of the joints, sent by email
- Where the job is, and your postcode
Need a quote? Please phone 0345 464 0079 or email us and tell us about the job. We’ll explain what we’d do and send you a clear quote before any work starts.
Work for landlords, hotels and businesses
In hotels, rooms out of use cost money, so the work can be planned room by room. Hotel work is part of what we do, alongside homes and businesses.
Whether it’s one flat or a portfolio, the work is the same standard: the old material taken out, careful preparation and a 12-month guarantee.
Places near East Sheen
Other services in East Sheen
New build mastic around East Sheen
Many of London’s new homes are flats in bigger developments, where snagging may go through the developer or managing agent. 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.
For new homes near Mortlake station, it’s worth checking the sealant early, while snags are still fresh.
East Sheen is about 3 miles west of Fulham, in Greater London. Wherever you are in the SW14 postcode area, we cover new build mastic for homes and businesses. East Sheen is one of 764 places in Greater London we cover for new build mastic. For nearby work, see our London page.
Postcode districts we cover here for new build mastic: SW14, SW13 and SW15. If you need new build mastic at a property on Elm Road, Well Lane and Fife Road or anywhere close by, we can help. Neighbouring places we cover for new build mastic include Mortlake (1 mile north-east), North Sheen (1 mile north-west), Barnes (1 mile north-east), Grove Park (1 mile north) and Richmond upon Thames (1 mile west). We also work in nearby towns such as London (8 miles east), City of Westminster (6 miles north-east), Marylebone (6 miles north-east), Kensington (4 miles north-east), St Pancras (8 miles north-east) and Shoreditch (9 miles north-east).
Local landmarks in East Sheen
We work in homes and buildings around Hare and Hounds pub, Palewell Park and Ibstock Place School and the streets around them. There’s a railway station in East Sheen itself: Mortlake station. Nearby you’ll also find Ubuntu Museum: African Museum of Humanity (1.1 miles south-east) and Barnes Hospital (0.5 miles east). Not far away are Duke's Hollow and Kew Gardens Lake.
Can I do it myself?
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.
If you’re set on DIY, put the effort into preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it fails, we can still redo it.
Common problems we fix in East Sheen
On many sites, sealant goes on in the final rush before handover. Dusty, unprimed joints are common, so the bead never bonds properly.
It’s worth asking for a quote if you see:
- Smeared, uneven beads picked up at snagging
- Leaking shower tray seals in a new home
- Gaps opening as the house dries out and settles
- Cracked caulk along new skirting
East Sheen is in London, so parking needs planning: tell us about permits, visitor bays or off-street space when you book.
Before you book anyone
- Whether the sealant suits the joint
- Which colour the sealant will be
- How long the guarantee is
- How much experience the applicator has
What we cannot put right
Honest advice matters more to us than a booking, so here’s what new sealant won’t do:
- Baths and trays that move too much for sealant to cope with
- Leaks from pipes, valves or wastes, which need a plumber
- Deciding who is responsible under a builder’s warranty
Not sure which it is? You can phone 0345 464 0079 or drop us an email and we will tell you honestly before you book.
Where we work in East Sheen
- Plot handovers
- Skirting & floors
- Show homes
- Windows & doors
- Kitchens
- Bathrooms & en suites
The process
All our tools and materials come with us in the van, so there’s nothing for you to buy. Once we have agreed what’s being done, we protect the area and start. It normally takes 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 East Sheen. A visitor permit or a nearby bay makes the visit run more smoothly.
- 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.
- Joints are vacuumed and cleaned of building dust.
- We prime where needed and apply a sealant suited to each joint.
- Each bead is tooled and the cure times explained.
How to prepare
- Tell us about any previous sealing or DIY attempts
- Clear items away from the joints we are working on
- Try not to wet indoor joints just before the visit
Getting a quote
There’s no standard price list, as no two jobs are quite the same. Instead, your job gets its own clear quote. To get started, call 0345 464 0079 or send us an email.
Related advice
What happens if it’s left?
Small cosmetic gaps can wait for the house to settle, but water getting through cannot. If you’re unsure which you have, ring 0345 464 0079 or drop us an email with pictures and we’ll give you a straight answer. Damp from a failed joint spreads quietly in older London brickwork and timber, and once it shows in East Sheen, the repair is bigger than a sealant job.
Some things make a job bigger or smaller: the old material and how easily it comes out, whether mould needs treating, and whether the work is at height. We take all of that into account in your quote.
Why choose Mr Mastic in East Sheen
- Fully insured
- We never seal over old sealant
- Anti-fungal sanitary silicone in wet areas
- Neat joints and a tidy finish
Read what affects the cost or our reviews.