Greater London · England
Ealing New Build Mastic
Our applicators work in Ealing on plot mastic for developers and snagging failed sealant in new homes. Old sealant removed completely, joints prepared properly and a 12-month guarantee.
- Beads laid onto grit and dust from the build
- Frame joints opening as the plaster dries
- Smeared, uneven beads picked up at snagging
DIY versus a professional finish
What a professional job adds is preparation and the right product. We take joints back to clean, dry surfaces, and the sealant is chosen for how the joint moves and where it is.
A DIY attempt does not rule out a professional job. We cut it out and start again.
New build mastic for homes and businesses in Ealing
A new house keeps drying out and settling for its first couple of years. Timber shrinks, plaster dries and baths and trays bed down, and sealant applied in a hurry at handover can split. We’re often asked to deal with untidy sealant flagged on a snagging list and gaps between new skirting and floors, across skirting & floors, windows & doors and plot handovers.
From brand-new flats to converted terraces with new flooring, London has every kind of floor. Wherever a floor meets a wall, a skirting or a threshold, the joint has to allow for movement, in Ealing as anywhere.
Big or small, it’s backed by our one-year guarantee in Ealing and across Greater London.
- Place
- Ealing (W5, W13, W3, NW10)
- Wider area
- Greater London
- Cover
- 12 months on all our work
- Quote
- A clear quote up front
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
Keeping the joints in good condition
Good habits help new joints last longer. A few tips:
- Keep water off fresh sealant until it has cured
- Photograph failed sealant before it’s redone
- Avoid scourers and strong chemicals on sealant
- Open a window or run the fan after bathing
Keep photos of the joints and any snagging correspondence with your builder. It helps if anything else comes up during the warranty period.
Mould takes hold quickly in sealant that has gaps or lifted edges. Dealing with it before it goes black saves a harder job later.
Work for landlords, hotels and businesses
We regularly work with letting and managing agents. Send the address, what’s needed and the access arrangements and we’ll quote.
Failed sealant is one of the commonest items on a check-out report, and it’s easy to sort out between tenants. Several properties can be quoted together.
Common questions in Ealing
Do you cover Ealing for new build mastic?
Yes. Our work covers London and the South East, and Ealing is part of that. You can call 0345 464 0079 or send us an email and tell us what needs doing, and we will give you a clear quote.
I let a flat near Ealing Broadway station. Can you help?
Yes, landlords and agents are among the people we work for. Just phone 0345 464 0079 or send us an email with the address and what needs doing, and we’ll give you a clear quote.
My new home is still under warranty. Should I contact you?
Start with your builder while their snagging or warranty period runs. If that doesn’t work out, we’re happy to quote and our work is guaranteed for a year.
Do you work for hotels and businesses?
Yes, regularly. Larger jobs can be planned room by room or area by area to suit the site.
Will you leave a mess?
No. We protect the surfaces around the joints, and we clear up the old sealant and our materials before we leave.
Which products do you use?
Products from Arbo and Everbuild, among others, picked for each joint. We’ll tell you what we’re using and why.
How long will you be here?
A typical job takes a few hours for most snagging lists, longer for a run of plots. We will confirm how long when we quote.
What information do you need?
The location, the problem and the rough size of the job. Photos by email help too.
What we do, step by step
At the end, we look at the finished work together. The visit itself usually takes a few hours in a single home, depending on the size of the job. In a London area like Ealing, the main things to plan are parking and access: tell us about permits, visitor bays or off-street space, which floor we are working on and whether there’s a lift.
- 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.
Preparing for the visit
- Clear items away from the joints we’re working on
- Mention any tricky access
- Where the joints are inside, avoid wetting them before we arrive
Getting a quote
Need a quote? Please ring 0345 464 0079 or email us with a few details. You’ll know what we plan to do, and what it will cost, before any work begins.
Advice
Nearby places to Ealing
More services for Ealing
Different surfaces, different methods
Skirting and floors
As timber and screed dry, skirting and floors shift. We use a flexible product rather than caulk.
Bathrooms and en suites
En suite seals are easy to miss on a snagging list until they leak. Resealing properly keeps water where it belongs.
Why deal with it now?
DIY kits do not solve the main problems with new-build sealant: dust, no primer and old sealant left in the joint. Cutting out, cleaning and priming are what make the difference. In a flat in Ealing, 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.
Doing several joints on one visit is usually more efficient than separate visits. We’ll give you a clear quote for the lot.
Why choose Mr Mastic in Ealing
- More than 20 years in sealant work
- 4.9 on Google from 180+ five-star reviews
- Fully insured
- We leave the area clean and tidy
See our cost guide and our reviews.
What sealant work can’t fix
Sealant isn’t the answer to every problem, and we’d rather say so up front. It won’t solve:
- Movement caused by a poorly fitted tray or bath
- Your warranty claim itself, which is between you and the builder
- Leaking fittings rather than failed sealant
If in doubt, ring 0345 464 0079 or email us and we’ll say what we think.
What we seal
- Show homes
- Bathrooms & en suites
- Kitchens
- Windows & doors
- Plot handovers
- Skirting & floors
New homes and floors in Ealing
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, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
As a London address, Ealing can be tricky for parking: tell us about permits, visitor bays or off-street space when you book. If you’ve bought a new home near Ealing Broadway station, the sealant around baths, showers and frames is worth checking in the first year or two.
Ealing is about 7 miles west of City of Westminster, in Greater London. We carry out new build mastic for homeowners, landlords and businesses in Ealing. Ealing is one of 764 towns and villages in Greater London we cover. There’s also a page for London, roughly 9 miles from Ealing.
We cover every part of the W5, W13, W3 and NW10 postcode area for new build mastic. Local streets include High Street, Coleridge Square and Station Road. Main roads around Ealing include the A40 and B452, which makes travel easy. We also cover the places around Ealing: South Ealing (1 mile south), Pitshanger (1 mile north), Brentham Garden Suburb (1 mile north), Hanwell (1 mile west) and West Ealing (1 mile west). We also work in nearby towns such as London (9 miles east), City of Westminster (7 miles east), Marylebone (7 miles east), Kensington (5 miles east), St Pancras (8 miles east) and Shoreditch (10 miles east).
Near you in Ealing
Around Ealing, our work takes us to homes and buildings near The Red Lion pub, Christ the Saviour Church of England Primary School and Great Ealing School, among other places. You will also find Walpole Park (less than half a mile north-east) and Library for Iranian Studies (1.5 miles east). For rail, the closest station is Ealing Broadway station, about 0.5 miles north-east. A little further out are London Designer Outlet (3.3 miles north) and Gunnersbury Park House - Large Mansion (1.2 miles south-east). Green spaces nearby include Castlebar Hill and Middle Lake.