Greater London · England
New Build Mastic in Greenford
New build mastic for Greenford and the surrounding area: the right sealant, proper preparation and a neat finish. Call for a quick quote.
- Gaps opening as the house dries out and settles
- Beads laid onto grit and dust from the build
- Worktop and upstand sealant coming away
When something else is needed
Honest advice matters more to us than a booking, so here’s what sealant can’t fix:
- Plumbing faults behind the sealant
- A tray or bath that isn’t properly supported, until it’s fixed
- Your warranty claim itself, which is between you and the builder
If in doubt, call 0345 464 0079 or drop us an email and we will say what we think.
What we seal
- Kitchens
- Skirting & floors
- Plot handovers
- Show homes
- Bathrooms & en suites
- Windows & doors
New build mastic in Greenford
For builders and developers, we work through plots to the schedule you give us. We seal bathrooms, kitchens, windows, doors and skirting so plots are ready to hand over. We work on skirting & floors, kitchens and show homes, and people most often call us about messy sealant that spoils new finishes and worktop and upstand sealant coming away.
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, in Greenford and beyond.
We stand behind the work with a one-year guarantee, so you’re not left on your own once the job is done.
- Place
- Greenford (UB6, UB5, UB1)
- Region
- Greater London
- Guarantee
- A year, on every job
- Price
- Quoted before any work starts
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
What affects the cost of new build mastic
Call for a quick quote. The main things that affect it are:
- How easy the joints are to reach
- Working hours on commercial sites
- Which sealant suits the joint
- The old material and how stubborn it is
What it costs depends on how much there is to do, how hard the old material is to remove and how easy the joints are to reach. We give a clear quote before we start.
Asking for a quote
You don’t need to know the technical terms. Just tell us:
- Whether it has been sealed before
- The problem you’ve noticed
- Where the property is
- The rough size of the job
For new build mastic in Greenford, phone 0345 464 0079 or drop us an email. Tell us what the problem is and where, and we will agree the price before any work begins.
Aftercare tips
After the cure time, these simple habits help:
- Open a window or run the fan after bathing
- Raise failed sealant with the developer while you are covered
- Don’t wait for the house to settle if water is getting through
- Wait for the cure time before using a resealed shower
Keep pictures of the joints and any snagging correspondence with your builder. It helps if anything else comes up during the warranty period.
The sooner you deal with untidy or cracking sealant, the less there is to put right. Left alone, a small crack can become a leak.
Greenford: your questions answered
Is Greenford in your area for new build mastic?
Yes. We work across London and the South East, and Greenford is part of that. You can call 0345 464 0079 or send us an email and let us know what needs doing.
Is parking a problem for a job in Greenford?
In much of London, parking needs planning: a visitor permit or a bay close to the door helps a lot, so mention what’s available when you book.
Can you work from my snagging list?
Yes. Photos of each sealant item help us quote. If something isn’t sealant, we will say so.
Is there a guarantee?
Yes, for a year. If there’s a problem with our work in that time, tell us and we will put it right.
Do you take on second-fix sealing for builders?
Yes. Plot mastic and second-fix sealing for developers is part of our work. Send us the plot schedule and we will quote.
Do you take out the old sealant first?
Always. Sealing over the old bead is the commonest cause of early failure, and it’s something we never do.
How long does new build mastic take?
That depends on the amount of work, but most jobs take anything from a few hours to several days, depending on the number of plots. We will tell you when we quote.
Is it worth resealing while the house is still settling?
Any seal that’s leaking should be redone straight away. For small cosmetic gaps, waiting until the house has settled can save doing them twice.
What happens if it’s left?
It often makes sense to do all the sealant items on a snagging list together. You get one visit and one clear quote for the lot. In a flat in Greenford, failed sealant seldom stays inside your own four walls: water can reach the neighbours below, and gaps in fire-rated joints affect the whole building.
Doing several joints on one visit usually makes better use of the time than several visits, so it’s worth mentioning everything you’d like done. You will get one clear quote for the whole job.
What you get with us
- Anti-fungal silicone where joints get wet
- A choice of colours where the product allows
- 20+ years of sealant experience
- We never seal over old sealant
Read our cost guide and customer reviews.
What happens on the day
There isn’t much for you to do on the day. Show us the job and we’ll take it from there. The job generally takes a few hours for most snagging lists, longer for a run of plots. In Greenford, flats, stairs and shared entrances are part of the routine. If the building has a concierge, managing agent or access rules, tell us when you book.
- We start by agreeing which joints are on the list, from the snagging sheet or plot schedule.
- We cut out every bit of the failed or messy sealant.
- We clean off dust from the build and prime the surfaces where the product needs it.
- New sealant suited to each joint is applied and tooled neatly.
- Each area is checked and left with its cure time.
Preparing for the visit
- Let us know about parking restrictions
- Plan for the work area to be out of bounds to pets and children
- Tell us about any water getting in
Ask for a quote
Want a quote for new build mastic? Please call 0345 464 0079 or email us and tell us about the job. We’ll explain what we’d do and send you a clear quote before work begins.
Related advice
New homes and floors in Greenford
London and the South East are among the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind. Many of London’s new homes are flats in bigger developments, where snags may need reporting through the developer or the managing agent.
For new homes near Greenford station, it’s worth checking the sealant early, while snags are still fresh. As a London address, Greenford can be tricky for parking: let us know about parking bays, permits or a driveway.
Greenford is about 3 miles north-west of Ealing, in Greater London. If you need new build mastic in Greenford, it’s easy to get a quote: please ring 0345 464 0079 or email us. We cover Greater London from our Crawley base, Greenford included. Greenford is one of 764 towns and villages in Greater London where we work. We also work in London, about 11 miles from Greenford.
Our applicators cover all of the UB6, UB5 and UB1 postcode area for new build mastic and the streets around it. We cover properties on Courthope Road, Oldfield Farm Gardens and Greenford Road and the roads around them. Being close to the A4090 and A4127, Greenford is simple for us to get to for new build mastic. Neighbouring places we cover for new build mastic include Northolt (1 mile north-west), Perivale (1 mile east), Sudbury (2 miles north-east), Sudbury Hill (2 miles north-east) and Dormers Wells (2 miles south-west). Further out, we also cover London (11 miles east), City of Westminster (9 miles east), Marylebone (9 miles east), Kensington (7 miles south-east), St Pancras (10 miles east) and Shoreditch (12 miles east).
Local landmarks in Greenford
We work in homes and buildings around Ada Lovelace Church of England High School, The Railway pub and Northala Fields, among other places. There’s a railway station in Greenford itself: Greenford station. Well-known places in the area include London Designer Outlet (3 miles north-east) and Clementine Churchill Hospital (2 miles north). For a walk, there’s Northala Fields and Litten Nature Reserve.
Can I do it myself?
A careful DIYer can reseal a simple joint, like a short, easy-to-reach joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
Not every job suits DIY: high-level joints, fire-rated gaps, external movement joints and big jobs need the right product, the right access and the right method.
Landlords, agents and businesses in Greenford
In hotels, rooms out of use cost money, so we plan the work room by room around your bookings where we can. We have worked in hotels as well as homes and businesses.
Mouldy or split sealant often shows up at the end of a tenancy, and it’s quick to put right between tenancies. We can quote for more than one property at once.