Greater London · England
New Build Mastic in West Ham
New build mastic across West Ham and nearby, with every bit of old sealant taken out first and a 12-month guarantee.
- Second-fix sealing on new plots
- Cracked caulk along new skirting
- Untidy sealant flagged on a snagging list
About our new build mastic in West Ham
Across West Ham, we work for both new-home owners and the builders handing those homes over. One shower or a whole phase of plots, the method does not change: remove, clean, prime where needed, then a neat new bead. We work on windows & doors, show homes and plot handovers, and common reasons people get in touch are gaps behind new kitchen upstands and untidy sealant flagged on a snagging list.
From brand-new flats to converted terraces with new flooring, London has every kind of floor. Every joint between floor, skirting and threshold has to cope with some movement, in West Ham as anywhere.
Every job is covered by a 12-month guarantee.
- Place
- West Ham (E15, E13, E7)
- Region
- Greater London
- Cover
- One year on every job
- Price
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
West Ham: your questions answered
Can you do new build mastic in West Ham?
Yes, West Ham is within the area we cover. Our work covers London and the South East. Just phone 0345 464 0079 or email us with a few details of the job.
Can parking be tricky for a visit in West Ham?
Parking in West Ham, as in most of London, takes a little planning: a visitor permit or a nearby bay makes the day run more smoothly, so mention what’s available when you book.
When is the sealant fully cured?
Cure times vary by product. We tell you how long to leave it before we go.
I rent my home. Can I book you?
We are happy to deal with the tenant, landlord or agent. Just make sure your landlord agrees.
Who should fix failed sealant in a new build?
If you’re still within the builder’s snagging or warranty period, report it to them first. If they’re slow or the fix doesn’t last, we can help.
Can I do it myself?
That depends on the joint. 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.
Is it normal for sealant to crack in a new home?
A new house dries and settles for a year or two, and sealant is often applied quickly onto dusty surfaces. Either can make it fail early.
Are you ARBOMaster approved?
Yes. We hold ARBOMaster approved applicator status.
What else we do in West Ham
How to look after the new joints
A little care helps the new joints last. We recommend:
- Don’t wait for the house to settle if water is getting through
- Report sealant problems to your builder during the snagging period
- Clean sealant with mild detergent, not abrasives
- Watch for new gaps as the house dries out
Photograph failed sealant before it’s redone and keep the builder’s replies. It’s useful if you need to raise other issues later.
A seal that splits early is often a sign of movement. Have it resealed, and the tray or bath checked, before it gets worse.
Different surfaces, different methods
Windows and doors
Draughts around new frames are often a sealant gap. We check and reseal the frame edges.
Kitchens
Worktops in new homes can move slightly as the house dries, which opens gaps along the back. We reseal them with a flexible sealant.
What new build mastic looks like in West Ham
The South East is one of the drier parts of the UK, 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.
If you’ve bought a new home near West Ham station, the sealant around baths, showers and frames is worth checking in the first year or two. As a London address, West Ham can be tricky for parking: let us know about parking bays, permits or a driveway.
West Ham is about 2 miles west of East Ham, in Greater London. We provide new build mastic to householders, landlords and businesses in West Ham and the surrounding area, as part of our work across Greater London. West Ham is one of 764 towns and villages in Greater London we cover for new build mastic.
Here we cover the E15, E13 and E7 postcode area for new build mastic. You’ll find streets such as Plaistow Grove, Willis Road and Moorey Close, all of which we cover. We also cover the places around West Ham: Upton (1 mile north-east), Greengate (1 mile south-east), Maryland (1 mile north-west), Stratford (1 mile north-west) and Plaistow (1 mile south-east). We also work in nearby towns such as London (5 miles south-west), City of Westminster (7 miles west), Marylebone (7 miles west), Kensington (9 miles west), St Pancras (6 miles west) and Shoreditch (4 miles west).
Landmarks near West Ham
Around West Ham, our work takes us to homes and buildings near West Ham Church School, The Earl Of Derby Public House and St Bonaventure's RC School. The nearest railway station is West Ham station, roughly 0.5 miles south-west of the centre. Well-known places in the area include Greenwich Castle (3.9 miles south) and Passmore Edwards Museum (0.6 miles north). Not far away are Old Ford Island and Tower Hill.
What we do, step by step
We work through the job in order: protection first, then preparation, sealing and a tidy-up. Typically it takes anything from a few hours to several days, depending on the number of plots and we leave things clean and tidy. Parking in much of London is by permit or pay-and-display, so it helps to know what’s near you in West Ham. A visitor permit or a nearby bay makes the visit run more smoothly.
- Each joint is checked for movement before we start.
- Old sealant is cut out and the joints cleaned.
- Joints are dried and primed where the product calls for it.
- Baths are filled with water, then the new sealant is applied.
- We check every joint and leave you with the cure times.
Before we arrive
- For business premises, tell us about site rules or sign-in
- Mention any tricky access
- For indoor joints, keep the area dry beforehand if you can
Get a quote
A good description makes for an accurate quote. Tell us where the job is, what’s wrong and how much there is.
Read more
Landlord and commercial work in West Ham
Failed sealant is one of the commonest items on a check-out report, and it’s quick to put right between tenancies. Several properties can go on one quote.
A neglected joint can let water reach the structure, which is a bigger problem in a rented property. Resealing at the right time is simple maintenance.
DIY sealant or a professional job?
What a professional job adds is preparation and the right product. Joints are cleaned back to sound surfaces and dried, and the sealant is matched to the joint and its conditions.
Sealing over old silicone is the commonest DIY error. New silicone won’t bond to old, so it peels away and traps moisture behind it. Everything old must be removed first.
When something else is needed
Before you book, it’s worth knowing the limits:
- Your warranty claim itself, which is between you and the builder
- Cracked trays, tiles or worktops
- Plumbing faults behind the sealant
If you’re not sure, just ring 0345 464 0079 or drop us an email and we will give you a straight answer before you book.
Surfaces we seal
- Kitchens
- Show homes
- Plot handovers
- Windows & doors
- Skirting & floors
- Bathrooms & en suites
Why it’s worth doing now in West Ham
The builder is generally the first port of call while the snagging or warranty period runs. If it keeps failing or is not dealt with, we can reseal it properly. In a flat in West Ham, failed sealant seldom stays inside your own four walls: water from a shower or window joint can reach the flat below, and gaps in fire-stopping matter to everyone in the building.
There are no prices on our website, because the cost depends so much on the job itself. For a quick quote, please phone 0345 464 0079 or email us and we will talk you through it.
Why book with us
- Experience in homes, commercial sites and hotels
- More than 20 years in sealant work
- A sealant colour to suit the surroundings
- Arbo and Everbuild products
See what affects the cost and what customers say.