Greater London · England
South Ealing New Build Mastic
We cover South Ealing for 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.
- Skirting joints opening in the first winter
- Untidy sealant flagged on a snagging list
- Kitchen sealant that has pulled off the wall
New build mastic in South Ealing
New homes move as they dry out. Timber dries and shrinks, and baths and trays settle, so sealant that was laid quickly before handover often cracks. We work on bathrooms & en suites, kitchens and skirting & floors, and common reasons people get in touch are untidy sealant flagged on a snagging list and cracked sealant around new window and door frames.
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 South Ealing as anywhere.
A 12-month guarantee comes with the work, just as it does everywhere we cover.
- Where
- South Ealing (W5, W13, TW8)
- Region
- Greater London
- Cover
- One year on every job
- Quote
- A clear price before we start
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
What we can’t put right
New sealant cannot fix everything, and we’ll tell you before any work starts. Sealant won’t put right:
- Plumbing faults behind the sealant
- Broken tiles or a split tray
- A tray or bath that isn’t properly supported, until it’s fixed
Not sure which it is? You can ring 0345 464 0079 or drop us an email and we’ll tell you honestly before booking.
What we seal
- Show homes
- Bathrooms & en suites
- Kitchens
- Windows & doors
- Skirting & floors
- Plot handovers
For landlords and businesses
We also work for property managers and facilities teams. We can quote a run of properties together, and we are fully insured for the work.
Businesses can book us for washrooms, kitchens, offices and more. For commercial premises, we can talk through working times when we quote.
New homes and floors in South Ealing
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.
If you’ve bought a new home near Brentford station, the sealant around baths, showers and frames is worth checking in the first year or two.
South Ealing is about 1 mile south of Ealing, in Greater London. For new build mastic in and around South Ealing, it’s easy to get a quote: please ring 0345 464 0079 or send us an email. We cover Greater London from our Crawley base, South Ealing included. Across Greater London, we cover 764 places, and South Ealing is one of them. London is on our list too, about 9 miles from South Ealing.
Postcode districts we cover here for new build mastic: W5, W13 and TW8. Whether your property is on South Road, Elers Road and Carew Road or a nearby road, we can help. Neighbouring places we cover for new build mastic include Ealing (1 mile north), Hanwell (1 mile north-west), West Ealing (2 miles west), Pitshanger (2 miles north) and Brentham Garden Suburb (2 miles north). Larger places within reach include 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 South Ealing
In South Ealing, that means homes and buildings near Lammas Park, Ealing Independent College and Ealing Park Tavern and the streets around them. Nearby too are Library for Iranian Studies (1.4 miles east) and Great Ealing School (within half a mile north). South Ealing’s nearest station is Brentford station, about 0.9 miles south. Nearby you’ll also find Gunnersbury Park House - Large Mansion (0.9 miles east) and Ealing Hospital (1.7 miles west). Not far away are Kew Gardens Lake and Castlebar Hill.
The process
The work is kept neat and contained to the area we’re working on, so you can get on with your day. The job normally takes a few hours for most snagging lists, longer for a run of plots, and we tell you how long to leave it before we go. In a London area like South 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.
- The failed sealant is removed completely, with no layer left behind.
- We clean out the dust and grit left from the build.
- Primer goes on where the surface and product need it, then the new sealant.
- Each bead is tooled and the cure times explained.
Before we arrive
- Tell us about any previous sealing or DIY attempts
- Clear items away from the joints we are working on
- Mention any parking rules near the property
Get a quote
Need a quote? Please phone 0345 464 0079 or drop us an email and tell us about the job. You will know what we plan to do, and what it will cost, before any work begins.
Read more
Do you need new build mastic in South Ealing?
Sealant is often one of the last jobs before handover. Joints aren’t always cleaned of dust or primed, and the sealant sits on grit instead of the surface.
Look out for any of the following:
- Messy sealant that spoils new finishes
- Sealant applied over dusty or wet surfaces
- Second-fix sealing on new plots
- Skirting joints opening in the first winter
As a London address, South Ealing can be tricky for parking: tell us about permits, visitor bays or off-street space when you book.
Before you book anyone
- What happens if they find a problem under the old sealant
- Whether they seal over old material or remove it
- Who does the work, and how experienced they are
- Which colour the sealant will be
Towns and villages near South Ealing
More services for South Ealing
Aftercare tips
How long the joints last depends on use and care. We suggest:
- Report sealant problems to your builder during the snagging period
- Keep water off fresh sealant until it has cured
- Don’t wait for the house to settle if water is getting through
- Record problems with dated photos
Photograph failed sealant before it’s redone and keep the builder’s replies. 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 and the new finishes intact.
Quotes for new build mastic in South Ealing
We quote each job individually. This is what makes a difference:
- Whether there’s mould to deal with
- The product the joint needs
- Access and height
- How much there is to do
Leaving a failed joint usually makes the job bigger, not smaller, as water and mould keep getting in. If you are unsure, ring 0345 464 0079 or email us for an honest opinion and a quote.
Asking for a quote
To help us quote quickly, please include:
- Where the property is
- The type of property
- Access, such as stairs, a lift or height
- Pictures of the joints, sent by email
Every job is quoted individually. Just ring 0345 464 0079 or email us with the details and send photos if you have them.
Your questions about new build mastic in South Ealing
Is South Ealing in your area for new build mastic?
Yes, South Ealing is within the area we cover. We work across London and the South East. Just call 0345 464 0079 or drop us an email with a few details of the job.
Can you help a landlord with a rental near Brentford station?
Yes, rental work is part of what we do. Just phone 0345 464 0079 or email us and tell us about the property, and we’ll give you a clear price.
Do you use white or clear sealant?
White and clear are the most common, but sealant comes in other colours too. We match the colour to the finish before we begin.
Can you do plot mastic on a new development?
Yes. We work through plots to your schedule ready for handover. Tell us the plots and the joints involved for a clear quote.
Will you leave a mess?
No. We protect the surfaces around the joints, and we tidy up before we go.
Can you do several jobs on one visit?
Yes. More than one area can go on one quote.
How much does new build mastic cost in South Ealing?
We do not publish prices, because the cost depends on the job: its size, the old material, access and the product needed. We agree the price before any work begins.
Can new sealant go on top of the old bead?
No. Sealing over old sealant looks fine for a few weeks, then lifts. All the old sealant comes out before we start.
How the job changes by surface
Bathrooms and en suites
Shower trays in new homes often move slightly in the first year. The joint is stripped back before the new bead goes in with baths filled first.
Kitchens
New-kitchen sealant is often applied in a rush. We remove it and reseal with a kitchen-suitable sealant.