Greater London · England
New Build Mastic in Gants Hill
Plot mastic for developers and snagging failed sealant in new homes for homeowners, landlords and businesses in Gants Hill. Fully insured, ARBOMaster approved and guaranteed for a year.
- Kitchen sealant that has pulled off the wall
- Untidy sealant flagged on a snagging list
- Shower seals failing in the first year or two
Work for landlords, hotels and businesses
From a single let to a portfolio, the work is the same standard: the old material taken out, careful preparation and a 12-month guarantee.
We also work for businesses, from offices to washrooms and kitchens. On commercial sites, working times can be discussed when we quote.
New build mastic for homes and businesses in Gants Hill
Snagging sealant properly means taking the failed bead out completely. New silicone won’t bond to old silicone, so the joint is cut out, cleaned, dried and resealed. We work on bathrooms & en suites, plot handovers and kitchens, and people most often call us about kitchen sealant that has pulled off the wall and plot mastic for developers ahead of handover.
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.
There’s a 12-month guarantee on every job, large or small.
- Where
- Gants Hill (IG2, IG6, IG1)
- Region
- Greater London
- Cover
- 12 months on all our work
- Price
- Quoted before any work starts
- Call
- 0345 464 0079
- Updated
- 26 October 2026
The process
All our tools and materials come with us in the van, so you don’t need to buy or prepare anything. After a quick look at the joints together, the area is protected and the work begins. Most jobs take anything from a few hours to several days, depending on the number of plots. In Gants Hill, 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 going through the snagging items or plot schedule with you.
- 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.
- We tool every joint neatly and tell you when each area can be used.
Before we arrive
- Mention any leaks or damp you’ve noticed
- For business premises, tell us about site rules or sign-in
- Tell us about any previous sealing or DIY attempts
Get a quote
We do not publish a price list, because every job is different. Instead, your job gets its own clear quote. To arrange one, ring 0345 464 0079 or drop us an email.
Related advice
What we cannot put right
We won’t take on work that will not last, so here’s what sealant can’t put right:
- Cracked trays, tiles or worktops
- Deciding who is responsible under a builder’s warranty
- A tray or bath that is not properly supported, until it’s fixed
If you are not sure, just ring 0345 464 0079 or drop us an email and we’ll give you a straight answer.
Surfaces we seal
- Windows & doors
- Show homes
- Bathrooms & en suites
- Kitchens
- Skirting & floors
- Plot handovers
Different surfaces, different methods
Windows and doors
The gap between a new frame and its plaster reveal often opens up. We remove cracked sealant and apply a flexible one.
Kitchens
Worktop, upstand and sink joints in new kitchens often get a hurried bead. We take it out and reseal neatly, colour-matched where it shows.
Should I try it myself first?
Overfilling a joint is a classic DIY mistake. A thick, smeared bead looks untidy and does not move well, and the joint depth matters as much as the finish.
A DIY attempt doesn’t rule out a professional job. We cut it out and start again, so tell us about it when you ask for a quote.
New homes and floors in Gants Hill
Many of London’s new homes are flats in bigger developments, where snags may need reporting through the developer or the 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, Gants Hill can be tricky for parking: tell us about permits, visitor bays or off-street space when you book. For new homes near Ilford station, it’s worth checking the sealant early, while snags are still fresh.
Gants Hill is about 3 miles north-east of Forest Gate, in Greater London. Gants Hill gets the same service as everywhere we cover: the old material taken out, joints prepared properly and a 12-month guarantee. Across Greater London, we cover 764 places, and Gants Hill is one of them. London is on our list too, around 9 miles away.
We work across the IG2, IG6 and IG1 postcode area for new build mastic and the streets around it. New build mastic is available to properties on Bute Road, Perth Road and Shere Road. Being close to the A123, Gants Hill is simple for us to get to. Nearby, we also carry out new build mastic in Newbury Park (1 mile east), Barkingside (1 mile north-east), Redbridge (1 mile west), Cranbrook (1 mile south-west) and Ilford (1 mile south). We also work in nearby towns such as London (9 miles south-west), City of Westminster (11 miles south-west), Marylebone (10 miles south-west), Kensington (13 miles south-west), St Pancras (9 miles south-west) and Shoreditch (7 miles south-west).
Local landmarks in Gants Hill
In Gants Hill, that means homes and buildings near Valentines Park and Valentines High School and the streets around them. The nearest railway station is Ilford station, about 1.2 miles south. Other landmarks nearby include Stratford Centre (3.9 miles south-west) and Goodmayes Hospital (1.7 miles east). Not far away are Hollow Pond and Hainault Lodge.
FAQs for Gants Hill
Do you work for landlords with property near Ilford station?
Yes. We work for landlords and agents as well as homeowners. Just call 0345 464 0079 or send us an email with the address and what needs doing, and we will give you a clear price.
Is Gants Hill in your area for new build mastic?
Yes. Our work covers London and the South East, and Gants Hill is part of that. You can phone 0345 464 0079 or drop us an email and let us know what needs doing, and we’ll give you a clear quote.
What should I tell you?
Let us know what needs doing and where. If we need more, we’ll ask.
Do you take on second-fix sealing for builders?
Yes. We take on second-fix sealant work across new plots. We clean and prime joints properly to keep callbacks down.
Can I do it myself?
For a simple, easy-to-reach joint, a careful DIYer can do a reasonable job. The usual mistakes are sealing over old sealant, sealing a damp joint and using too much.
Can you do several jobs on one visit?
Yes. Tell us about everything you’d like done.
Are you insured?
Yes. We’re fully insured.
Do you take out the old sealant first?
Yes, every time. New sealant won’t bond properly to old, so the joint is cleaned back first.
What happens if it’s left?
The builder is generally the first port of call while the snagging or warranty period runs. If it keeps failing or isn’t dealt with, we can reseal it properly. Converted houses in London often have a bathroom above someone else’s living room, and a slow leak from a failed seal can end up in the flat below. Putting it right early is much less trouble.
Combining jobs into one visit is normally more efficient than separate visits, so tell us about everything that needs sealing. You’ll get one clear quote for the whole job.
Why choose Mr Mastic in Gants Hill
- Rated 4.9 stars on Google
- Colour picked to suit the job
- Homes, businesses and hotels
- Quality sealants from Arbo and Everbuild
Read how sealant jobs are priced or our reviews.
What affects the cost of new build mastic
Call for a quick quote. The main things that affect it are:
- Any mould that needs treating
- Working hours on commercial sites
- The product the joint needs
- Access and height
Instead of a standard rate, we look at what your job involves: the amount of work, the old material and the access. You’ll know the price before we begin.
Helping us quote
To help us quote quickly, please include:
- What the problem is, such as mould, gaps, leaks or cracking
- If it’s domestic, commercial or a hotel
- Whether it has been sealed before
- Any access issues, like height or stairs
To get a quote, ring 0345 464 0079 or send us an email and tell us where the job is and what the problem looks like. We’ll give you a clear price before any work starts.