Surrey · England
New Build Mastic in Leatherhead
We cover Leatherhead for plot mastic for developers and snagging failed sealant in new homes. Old sealant removed completely, joints prepared properly and every job guaranteed for a year.
- Gaps between new skirting and floors
- Shower seals failing in the first year or two
- Gaps behind new kitchen upstands
About our new build mastic in Leatherhead
If your new home has a leaking shower seal, open skirting joints or untidy sealant, we can help. If you’re still within the builder’s snagging or warranty period, tell them first. We’re often asked to deal with gaps behind new kitchen upstands and shower seals failing in the first year or two, on show homes, bathrooms & en suites and windows & doors.
Shops and business units around Leatherhead have floors that see a lot of traffic. Joints at thresholds and in tiled or concrete floors need resealing before the edges start to break up.
There’s a 12-month guarantee on every job.
- Place
- Leatherhead (KT22)
- Region
- Surrey
- Cover
- 12 months on all our work
- Quotes
- Quoted before any work starts
- Call
- 0345 464 0079
- Updated
- 26 October 2026
What the job involves on each surface
Plot handovers
Developers can send the plot schedule and specification for a quote. We seal bathrooms, kitchens, frames and floors as agreed.
Show homes
We can refresh show-home sealant that has discoloured or been knocked. We cut it out and reseal neatly.
Also near Leatherhead
Other services in Leatherhead
What happens if it’s left?
A quick bead over the top of the old sealant can look fine at first, but it will not bond to the old layer. A lasting seal starts with removing the old one completely. In Leatherhead, as anywhere, most leaks start as a small gap in a joint, and early is when they’re cheapest and quickest to sort.
What it costs depends on the amount of work, how much old material has to come out and access to the work. We give a clear quote before we start, so you know where you stand.
Why Leatherhead customers choose us
- 4.9 on Google from 180+ five-star reviews
- We agree the colour with you first
- We leave the area clean and tidy
- We are fully insured
Read how sealant jobs are priced or our reviews.
New homes and floors in Leatherhead
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.
If you’ve bought a new home near Leatherhead station, the sealant around baths, showers and frames is worth checking in the first year or two.
Leatherhead is about 4 miles south-west of Epsom, in Surrey. For new build mastic in and around Leatherhead, please ring 0345 464 0079 or drop us an email for a quick quote. We are based in Crawley and cover Surrey, Leatherhead included. Leatherhead is one of 395 places in Surrey we cover for new build mastic. For nearby work, see our Crawley page, about 14 miles away.
Postcode districts we cover here for new build mastic: KT22. You’ll find streets such as High Street, Church Road and Station Road, and we cover them all. With the A24 and A245 close by, Leatherhead is simple for us to get to for new build mastic. We also cover the places around Leatherhead: Fetcham (1 mile west), Mickleham (2 miles south), Great Bookham (2 miles south-west), Westhumble (3 miles south) and Little Bookham (3 miles south-west). We also work in nearby towns such as Guildford (11 miles west), Woking (11 miles west), Epsom (4 miles north-east), Horley (11 miles south-east), Redhill (8 miles south-east) and Ewell (5 miles north-east).
What’s near Leatherhead
Locally, jobs take us to homes and businesses close to St Andrew's Catholic School, St Andrew's Catholic School and Duke's Head Public House, among other places. There’s a railway station in Leatherhead itself: Leatherhead station. A little further out are Walton on the Hill (3.5 miles east) and Headley Court (2.2 miles east). The countryside around Leatherhead includes Claremont Lake and Jubilee Wood.
When to call us in Leatherhead
On many sites, sealant goes on in the final rush before handover. Dusty, unprimed joints are common, so the bead never bonds properly.
It’s worth asking for a quote if you see:
- Skirting joints opening in the first winter
- Plot mastic for developers ahead of handover
- Worktop and upstand sealant coming away
- Internal frame sealant that has split
Around Leatherhead, as everywhere, new build mastic is only as good as the preparation behind it.
What your quote should include
- What preparation is included
- Who turns up on the day
- Is the old sealant removed completely?
- How the colour is chosen
When something else is needed
New sealant can’t fix everything, and we’d rather say so up front. Sealant will not put right:
- Disputes or warranty claims with your builder
- Leaks from pipes, valves or wastes, which need a plumber
- Broken tiles or a split tray
If in doubt, phone 0345 464 0079 or email us and we will say what we think before booking.
Where we work in Leatherhead
- Bathrooms & en suites
- Windows & doors
- Kitchens
- Skirting & floors
- Plot handovers
- Show homes
Work for landlords, hotels and businesses
We regularly work with letting and managing agents. Tell us the address, the job and how access works and we’ll quote.
For anyone letting property in or around Leatherhead, several properties can go on one quote. Just tell us the addresses and what each one needs, and photos by email help.
The process
The work is kept neat and contained to the area we are working on, so you can get on with your day. Expect the work to take anything from a few hours to several days, depending on the number of plots, and we explain the cure time before we leave. Parking in a town like Leatherhead is usually straightforward, but tell us if there’s a driveway or any restrictions, and mention if the work is upstairs, in a flat or high on the outside.
- We start by going through the snagging items or plot schedule with you.
- The failed sealant is removed completely down to clean surfaces.
- We clean out the dust and grit left from the build.
- We prime where needed and apply a sealant suited to each joint.
- Each bead is tooled and the cure times explained.
Getting ready for the visit
- Where the joints are inside, avoid wetting them before we arrive
- Let us know if you’ve seen damp or leaks
- Mention any tricky access
Get a quote
Need a quote? Please phone 0345 464 0079 or email us with a few details. You’ll know what we plan to do, and what it will cost, before any work begins.
Read more
Leatherhead: your questions answered
Do you work for landlords with property near Leatherhead station?
Yes, we work for landlords and letting agents. Just phone 0345 464 0079 or email us and tell us about the property, and we will send you a clear quote.
Can you do new build mastic in Leatherhead?
Yes. Our work covers London and the South East, and Leatherhead is part of that. Just call 0345 464 0079 or send us an email with a few details of the job.
Do I need to be at home?
Access is agreed with you when the job is booked. Indoors, that generally means someone at home.
Will you leave a mess?
No. We work neatly, protect the area around the joints and tidy up afterwards.
Will the old sealant be removed?
Yes. Sealing over old sealant is the main reason resealing fails early, so we never do it.
When is the sealant fully cured?
Different products cure at different speeds, so follow the cure time we give you.
Where is Mr Mastic based?
We’re a Crawley-based firm. Our area covers South East England, London and Scotland.
Is it normal for sealant to crack in a new home?
There are normally two causes: the house moving as it dries, and sealant that never bonded properly. A proper reseal deals with both.
Aftercare tips
Joint life depends on how it’s used and looked after. We suggest:
- Raise failed sealant with the developer while you are covered
- Avoid running a DIY bead over the old one
- Keep water off fresh sealant until it has cured
- Get a leaking seal dealt with straight away
Photograph failed sealant before it’s redone and keep the builder’s replies. It’s useful if you need to raise other issues later.
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 in a busy bathroom.