Greater London · England
Edmonton New Build Mastic
New build mastic across Edmonton and nearby, with old sealant always removed completely and a 12-month guarantee.
- Cracked sealant around new window and door frames
- Beads laid onto grit and dust from the build
- Leaking shower tray seals in a new home
How the visit works
At the end, we look at the finished work together. The work normally takes a few hours for most snagging lists, longer for a run of plots, depending on how much there is to do. Many London jobs are in flats, so we come ready for stairs, narrow hallways and shared entrances. If the building has a concierge, managing agent or access rules, tell us when you book.
- 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.
- 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.
- We tool every joint neatly and tell you when each area can be used.
How to prepare
- Tell us if parking is tricky
- On commercial sites, let us know about site rules
- Keep pets and children clear of the area while we work
Ask for a quote
The more we know about the job, the more useful the quote. Tell us where the job is, what’s wrong and how much there is.
Related advice
How we handle new build mastic in Edmonton
Failed shower seals, gaps along the skirting and messy beads are common items on a new-home snagging list. While the builder’s snagging or warranty period runs, report it to them first, and if it is not put right, get in touch with us. If you are dealing with worktop and upstand sealant coming away and gaps between new skirting and floors, we can put it right.
Much of London’s new housing is flats in larger developments. Snagging there often goes through the developer or managing agent, and failed shower seals, open skirting joints and gaps at thresholds are typical.
The work is covered for a year after we finish. If anything isn’t right with it, call 0345 464 0079 or email us.
- Where
- Edmonton (N9, N18, N13, EN1)
- Region
- Greater London
- Cover
- 12 months on all our work
- Quotes
- Quoted before any work starts
- Call
- 0345 464 0079
- Updated
- 26 October 2026
Also near Edmonton
What else we do in Edmonton
Leave it or put it right?
Water getting past a failed seal in a new build reaches walls and floors that are still settling. Dealing with it early keeps the damage away from ceilings, floors and finishes. Converted houses in London often have a bathroom above someone else’s living room, so a small leak from tired sealant can mean a neighbour’s ceiling and a lot of disruption. Dealing with it early is far simpler.
Homes and businesses are quoted the same way: the amount of work, how we reach it and what it needs. Ask us for a quote and we will explain what it covers.
Why Edmonton clients choose us
- 20+ years of sealant experience
- Old sealant always removed completely
- We agree the colour with you first
- Tidy, careful work
Take a look at how sealant jobs are priced and customer reviews.
Edmonton: your questions answered
Do you work for landlords with property near Edmonton Green station?
Yes, rental work is part of what we do. Just call 0345 464 0079 or email us and tell us about the property, and we’ll give you a clear quote.
Can parking be tricky for a visit in Edmonton?
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.
Will you just run a new bead over the existing one?
No. Fresh silicone does not stick to the old layer, so it soon lifts and traps water. The old sealant always comes out first.
Do you come to Edmonton?
Yes. We cover Edmonton and the rest of Greater London, as part of our work across South East England, London and Scotland. For a quote, ring 0345 464 0079 or email us.
Is it worth trying it myself?
That depends on the joint. High-level, external movement and fire-rated joints are professional jobs, while a short indoor joint may be within reach.
Is it messy?
Not at all. We work neatly, protect the area around the joints and tidy up afterwards.
What does new build mastic cost?
Every job is different, so each one gets its own quote. To get one, call 0345 464 0079 or email us with a short description of the job.
Do the sealants smell?
Some sealants have a smell while they cure, which fades as it sets. Opening a window helps.
Work for landlords, hotels and businesses
We also work for property managers and facilities teams in Edmonton and across Greater London. We can quote a run of properties together.
Mouldy or split sealant often shows up at the end of a tenancy, and it’s easy to sort out between tenants. Several properties can go on one quote.
What the job involves on each surface
Bathrooms and en suites
Shower trays in new homes often move slightly in the first year. We reseal once the old bead is fully out with baths filled first.
Skirting and floors
Gaps under skirting are one of the most common new-build snags. A flexible sealant closes it without cracking like caulk.
DIY versus a professional finish
What a professional job adds is preparation and the right product. Joints are cleaned back to sound surfaces and dried, and the sealant is chosen for how the joint moves and where it is, then guaranteed for a year.
A careful DIYer can reseal a simple joint, such as a straightforward joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
Honest limits
It helps to know what we can’t do:
- Baths and trays that move too much for sealant to cope with
- Your warranty claim itself, which is between you and the builder
- Leaks from pipes, valves or wastes, which need a plumber
If you are not sure, just call 0345 464 0079 or send us an email and we will give you a straight answer before booking.
Where we work in Edmonton
- Show homes
- Bathrooms & en suites
- Kitchens
- Plot handovers
- Windows & doors
- Skirting & floors
What affects the quote in Edmonton
Your quote is based on your job. We take into account:
- When we can work, for business premises
- The type of sealant required
- How many rooms, windows or areas are involved
- The old material and how stubborn it is
A failed joint rarely gets cheaper to fix by waiting, because water and mould keep working on it. If you are unsure, call 0345 464 0079 or email us and we will give you an honest view and a quote.
Helping us quote
When you call or email, it’s useful to know:
- Roughly how big the job is
- Any previous sealing or DIY work
- Access, such as stairs, a lift or height
- A few pictures by email, if you can
Need a quote? Please phone 0345 464 0079 or send us an email with a few details. You’ll know what we plan to do, and what it will cost, before any work begins.
Joints and finishes in Edmonton homes
Compared with the north and west, the South East gets less rain, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind. Much of London’s new housing is flats in larger developments, where snagging may go through the developer or managing agent.
As a London address, Edmonton can be tricky for parking: let us know about parking bays, permits or a driveway. If you’ve bought a new home near Edmonton Green station, the sealant around baths, showers and frames is worth checking in the first year or two.
Edmonton is about 9 miles north-east of City of Westminster, in Greater London. Edmonton gets the same service as everywhere we cover: the old material taken out, joints prepared properly and a 12-month guarantee. Our Greater London coverage runs to 764 places, Edmonton among them. London is on our list too, about 9 miles from Edmonton.
Every address in N9, N18, N13 and EN1 is within our area for new build mastic, from the main roads to the quietest streets. If you need new build mastic at a property on The Broadway, Plevna Road and Galahad Road or a nearby road, our applicators can take on the job. With the B137 and B154 close by, Edmonton is easy for our applicators to reach for new build mastic. Other places close to Edmonton include Upper Edmonton (1 mile south), Picketts Lock (1 mile east), Northumberland Park (1 mile south), Ponders End (1 mile north-east) and Bush Hill Park (1 mile north-west). Within a short drive, we also cover London (9 miles south), City of Westminster (9 miles south-west), Marylebone (8 miles south-west), Kensington (10 miles south-west), St Pancras (7 miles south) and Shoreditch (7 miles south).
Near you in Edmonton
Locally, jobs take us to homes and businesses close to NiW Furniture pub, The Latymer School and Starks Field School. There’s a railway station in Edmonton itself: Edmonton Green station. Well-known places in the area include Edmonton Green Shopping Centre (within half a mile north-east) and North Middlesex University Hospital (1 mile south-west). Green spaces nearby include Highams Park Lake and Ainslie Wood.