Greater London · England
White City New Build Mastic
New build mastic for White City and the surrounding area: the right sealant, proper preparation and a neat finish. Ask us for a quick quote.
- Plot mastic for developers ahead of handover
- Cracks appearing as a new home settles
- Leaking shower tray seals in a new home
New build mastic in White City, done properly
New homes move as they dry out. Timber shrinks, plaster dries and baths and trays bed down, so sealant that was laid quickly before handover often cracks. We work on kitchens, skirting & floors and show homes, and the jobs we see most are beads laid onto grit and dust from the build and plot mastic for developers ahead of handover.
Across London, commercial floors have movement joints that break down under heavy foot traffic, while new homes need a neat, sound finish around frames, baths and kitchens before handover.
Our work is backed for twelve months, and the guarantee is the same wherever you are.
- Where
- White City (W12, W11, W10)
- Wider area
- Greater London
- Guarantee
- A year, on every job
- Price
- A clear price before work begins
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
What we do, step by step
You don’t need to clear the whole room or building before we come, just the space around the work. We protect the rest, and the job takes a few hours for most snagging lists, longer for a run of plots in most cases. In a London area like White City, the main things to plan are parking and access: let us know about parking, the floor we will be working on and any lift or shared entrance.
- Each joint is checked for movement before any work starts.
- 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.
- The finished joints are checked and the cure times given.
Getting ready for the visit
- Mention if the joints have been sealed before
- Mention any tricky access
- Mention any parking rules near the property
Get a quote
It all starts with a short chat. Describe the problem, the location and the size of the job. When it suits you, ring 0345 464 0079 or email us.
Advice
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Questions from White City
Is parking a problem for a job in White City?
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.
Is White City in your area for new build mastic?
Yes, White City is within the area we cover. Our work covers London and the South East. You can phone 0345 464 0079 or drop us an email and tell us what needs doing, and we will send you a clear quote.
How long does the job take?
It depends on the size of the job, but as a guide it takes a few hours in a single home. We will give you a better idea when we quote.
I rent my home. Can I book you?
Yes. Ask your landlord first, and we can send them the quote if that helps.
Why has my new-build shower seal failed already?
New homes dry out and move in their first couple of years, and sealant is often applied quickly onto dusty surfaces. Both lead to early failure.
Can I add another job to the visit?
Yes. Just list everything you need and you’ll get one quote.
Can you reseal over the builder’s sealant?
No. The old sealant is cut out fully, then clean and prime the joint, before resealing.
Do I have to be there?
That depends on where the joints are. Inside work needs someone to give us access, while outside work can sometimes be arranged differently.
Quotes for new build mastic in White City
You will get a clear quote before any work starts. It’s based on:
- How many rooms, windows or areas are involved
- Whether the work is at height
- Any working-time requirements on site
- Which sealant suits the joint
Some things make a job bigger or smaller: the old material and how easily it comes out, any mould to treat, and whether we need extra access for height. Your quote takes all of that into account.
What we need to know
You do not need to know the technical terms. Just tell us:
- The type of property
- Where the property is
- The problem you’ve noticed
- Photos by email, if that’s easy
Every job is quoted individually. Just ring 0345 464 0079 or drop us an email with the details, and pictures are welcome.
Aftercare tips
Aftercare is simple:
- Get a leaking seal dealt with right away
- Follow the cure time we give you
- Wipe joints with warm soapy water
- Use the extractor fan every time you shower
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. Early resealing keeps the job small.
Common problems we fix in White City
The first winter with the heating on dries a new home quickly. Gaps open along skirting, frames and worktops and cracks appear in the sealant.
It’s worth asking for a quote if you see:
- Smeared, uneven beads picked up at snagging
- Shower seals failing in the first year or two
- Skirting joints opening in the first winter
- Joints pulling apart as timber shrinks
For new homes near Shepherds Bush station, it’s worth checking the sealant early, while snags are still fresh.
What your quote should include
- What the quote includes, VAT included or not
- Which colour the sealant will be
- The length of the guarantee
- Who turns up on the day
Can I do it myself?
A careful DIYer can reseal a simple joint, such as a straightforward joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
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.
New build mastic in White City: local notes
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. Much of London’s new housing is flats in larger developments, where snagging may go through the developer or managing agent.
White City is in London, so parking needs planning: tell us about permits, visitor bays or off-street space when you book.
White City is about 1 mile north-west of Kensington, in Greater London. From the centre of White City to the outskirts, new build mastic is available for homes and businesses alike, from flats and houses to offices and hotels. White City is one of 764 towns and villages in Greater London where we work. London is on our list too, around 6 miles away.
All of W12, W11 and W10 is within our area for new build mastic. New build mastic is available to properties on Bard Road, Wood Lane and Abdale Road. Neighbouring places we cover for new build mastic include Shepherd's Bush (1 mile south), Notting Dale (1 mile east), North Kensington (1 mile north), Notting Hill (1 mile east) and Kensal Town (1 mile north-east). We also work in nearby towns such as London (6 miles east), City of Westminster (3 miles east), Marylebone (3 miles east), St Pancras (5 miles east), Shoreditch (6 miles east) and Walthamstow (10 miles north-east).
What’s near White City
We work in homes and buildings around Hammersmith Park, Star Chamber Academy and Kensington Aldridge Academy, among other places. Nearby too are The Favourite pub (0.5 miles south-east) and Polish Library POSK in London (1.4 miles south-west). White City’s nearest station is Shepherds Bush station, about 0.5 miles south-east. Well-known places in the area include Princess Louise Hospital (0.5 miles north) and Culture House (0.5 miles south). The countryside around White City includes The Long Water and Greville Place nature reserve.
Landlord and commercial work in White City
A neglected joint can let water reach the structure, which matters even more when someone else lives there. Resealing at the right time is simple maintenance that we can handle for you.
Failed sealant is one of the commonest items on a check-out report. Several properties can go on one quote.
Why act early in White City
DIY kits do not solve the main problems with new-build sealant: grit, unprimed surfaces and old layers underneath. Cutting out, cleaning and priming are what make the difference. In a flat in White City, 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.
A failed joint rarely gets cheaper to fix by waiting. If you’re not sure whether it needs doing, ring 0345 464 0079 or drop us an email and we’ll give you an honest view and a quote.
What you get with us
- Anti-fungal silicone where joints get wet
- We leave the area clean and tidy
- Sealant colour chosen to suit
- More than 20 years in sealant work
See our cost guide and customer reviews.