Greater London · England
Stratford New Build Mastic
New build mastic in Stratford from a team with over 20 years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Gaps behind new kitchen upstands
- Cracked sealant around new window and door frames
- Sealant that never bonded to the surface
New build mastic in Stratford
In a new home, every joint should have a clean, even bead. When the finish is smeared, patchy or already cracking, it’s worth putting right early, before water gets into the floor or walls. Typical jobs include sealant applied over dusty or wet surfaces and kitchen sealant that has pulled off the wall, on kitchens, windows & doors and skirting & floors.
Much of London’s new housing is flats 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.
All of our work is guaranteed for twelve months, in Stratford and everywhere else we cover.
- Location
- Stratford (E15, E20, E3)
- Region
- Greater London
- Guarantee
- 12 months on all our work
- Price
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
For landlords and businesses
For anyone letting property in or around Stratford, several properties can go on one quote. Send us the addresses and the work at each.
Mouldy or split sealant often shows up at the end of a tenancy, and it’s quick to put right between tenancies. Several properties can be quoted together.
How the visit works
On the day, there’s very little for you to do. Point us to the joints and we’ll get on with it. The work itself takes a few hours in a single home, including the tidy-up. Parking in much of London is by permit or pay-and-display, so it helps to know what’s near you in Stratford. It helps if you can point us to a visitor permit or a bay close to the door.
- We start by going through the snagging items or plot schedule with you.
- The failed sealant is removed completely, 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.
Preparing for the visit
- Let us know about parking restrictions
- Let us know about earlier repairs to the joints
- Clear the area around the work
Getting a quote
We quote each job on its own, so the first step is telling us about yours. Just call 0345 464 0079 or send us an email with the details and send pictures if you have them.
Read more
DIY versus a professional finish
Some sealant jobs are within reach of a careful DIYer, such as a straightforward joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
If you’ve already had a go yourself, that is fine. We cut it out and start again, so tell us about it when you ask for a quote.
Aftercare tips
To keep the joints looking good and working properly:
- Wait for the cure time before using a resealed shower
- Clean sealant with mild detergent, not abrasives
- Open a window or run the fan after bathing
- Record problems with dated pictures
Wipe the sealant with warm soapy water. Avoid abrasive pads and strong solvents.
Leave a failed new-build seal and water can reach the floor and the ceiling below. Catching it early keeps the fix to the sealant and the new finishes intact.
Common problems we fix in Stratford
Once people move in, baths and trays take weight and bed down. If a bath wasn’t filled when it was sealed, the bead is stretched the first time it’s used and can tear.
If you can see any of these, it’s time to have the joints looked at:
- Cracked caulk along new skirting
- New-build shower sealant that has already split
- Frame joints opening as the plaster dries
- Sealant that never bonded to the surface
For new homes near Stratford (London) station, it’s worth checking the sealant early, while snags are still fresh.
What to look for in a quote
- Whether VAT is included
- What happens if they find a problem under the old sealant
- How long to leave it before use
- Who does the work, and how experienced they are
Places near Stratford
What else we do in Stratford
What sealant work cannot fix
A few problems are outside what sealant work can do:
- Deciding who is responsible under a builder’s warranty
- Movement caused by a poorly fitted tray or bath
- Broken tiles or a split tray
If in doubt, call 0345 464 0079 or email us and we’ll say what we think before you book.
Surfaces we seal
- Plot handovers
- Skirting & floors
- Bathrooms & en suites
- Kitchens
- Show homes
- Windows & doors
Joints and finishes in Stratford homes
Compared with the north and west, the South East gets less rain, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day. Many of London’s new homes are flats in bigger developments, where snags may need reporting through the developer or the managing agent.
As a London address, Stratford can be tricky for parking: tell us about permits, visitor bays or off-street space when you book.
Stratford is about 5 miles north-east of London, in Greater London. We carry out new build mastic for homes and businesses in Stratford, as part of our work across Greater London. Across Greater London, we cover 764 places, and Stratford is one of them.
Our applicators cover all of E15, E20 and E3 for new build mastic and the streets around it. If you need new build mastic at a property on Gay Road, Cam Road and Eve Road or anywhere close by, our applicators can take on the job. Other places close to Stratford include Maryland (1 mile east), East Village (1 mile north-west), Temple Mills (1 mile north-west), West Ham (1 mile south-east) and Hackney Wick (1 mile west). Further out, we also cover London (5 miles south-west), City of Westminster (7 miles west), Marylebone (6 miles west), Kensington (9 miles west), St Pancras (5 miles west) and Shoreditch (3 miles west).
Near you in Stratford
Locally, jobs take us to homes and businesses close to Carpenters Primary School, The Two Puddings pub and Sarah Bonnell School, among other places. There’s a railway station in Stratford itself: Stratford (London) station. A little further out are Stratford Centre (under half a mile south-east) and V&A East (0.5 miles west). Not far away are Hollow Pond and Old Ford Island.
Leave it or put it right?
Running a new bead over the builder’s sealant might look tidy for a few weeks, but it will not bond to the old layer. Taking it all out and starting again is the only way to get a lasting seal. In older London homes, water behind a failed joint soaks into brick and timber without much sign, and once it shows in Stratford, 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 we need extra access for height. We take all of that into account in your quote.
Why us?
- Colour agreed with you before work begins
- Anti-fungal sanitary silicone in wet areas
- Sealant colour chosen to suit
- Old sealant always removed completely
See our cost guide and what customers say.
Common questions in Stratford
Can you do new build mastic in Stratford?
Yes, Stratford is within the area we cover. Our work covers London and the South East. You can phone 0345 464 0079 or send us an email and let us know what needs doing, and we’ll send you a clear quote.
I let a flat near Stratford (London) station. Can you help?
Yes, landlords and agents are among the people we work for. You can call 0345 464 0079 or email us with the details for a clear quote.
Are you insured?
Yes. Mr Mastic is fully insured.
Will there be a smell?
Possibly a little. Any smell clears as the sealant cures, and ventilation helps.
What should I tell you?
Only a few details: the address or postcode, what’s wrong and any access issues. After that, simply call 0345 464 0079 or send us an email.
How much does new build mastic cost in Stratford?
It depends on the job, so we quote each one individually. To get one, ring 0345 464 0079 or drop us an email with a short description of the job.
Can you work from my snagging list?
Yes. Send us the sealant items on the list, with pictures if you can. We will flag anything that needs another trade.
Should I try DIY first?
That depends on the joint. High-level, external movement and fire-rated joints are professional jobs.