Surrey · England
External & façade joints in Leatherhead, Surrey
Sealing brickwork movement joints, render, cladding and façade joints for homeowners, landlords and businesses in Leatherhead. Fully insured, ARBOMaster approved and guaranteed for a year.
- Gaps where render, brick and frames meet
- Sealant pulling away from one side of the joint
- Damp patches traced to an open external joint
How we handle external mastic in Leatherhead
Getting the depth right is half the job. Backing rod controls how deep the sealant goes and keeps it off the back of the joint, leaving it bonded to two faces so it can move with the wall. If you have leaking joints around cladding and façade panels and brick movement joints where the sealant has split, we can put it right, whatever the surface.
Leatherhead mixes older houses and their gutters with newer estates of brick, render and uPVC trims. All of those joints move, so they need a flexible sealant rather than a rigid filler.
The work is guaranteed for twelve months. If there’s a problem with our work within the year, let us know and we will sort it.
- Where
- Leatherhead (KT22)
- Region
- Surrey
- Guarantee
- One year on every job
- Quote
- Quoted before any work starts
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
Landlords, agents and businesses in Leatherhead
Housing providers, facilities teams and property managers book us too. We can quote a run of properties together.
Businesses can book us for washrooms, kitchens, offices and more. For commercial premises, we can talk through working times when we quote.
When to call us in Leatherhead
The wrong product in a moving joint is a classic cause. A stiff, general-purpose sealant can’t cope with a joint that moves a lot, so it pulls away from the edges.
Look out for these signs:
- Water getting into walls through failed joints
- Movement joints with cracked, split or missing sealant
- Joints pointed up with cement by mistake
- Hard, crazed mastic that has stopped moving
For site and facilities teams at buildings such as Leatherhead Trinity School and Children's Centre, its movement joints, gutters and trims need looking after like any other building’s.
Questions to ask before booking
- What the quote includes, VAT included or not
- What guarantee comes with the work
- What preparation is included
- How hidden problems are handled
Towns and villages near Leatherhead
Other services in Leatherhead
The process
All our tools and materials come with us in the van. After a quick look at the joints together, the area is protected and the work begins. Most jobs take a few hours to a few days, depending on the length of joint and the access. For a job in Leatherhead, we need access to where the work is and somewhere nearby to park. For outside work, let us know about side access, gates and any upper-floor joints.
- We inspect the joints and agree which need resealing and how they’ll be reached.
- Old sealant and any debris are cut and raked out.
- We clean both faces of the joint and prime them where the product calls for it.
- Backing rod goes in next, setting the depth and keeping the sealant off the back of the joint.
- A flexible exterior sealant is applied and tooled in a colour to suit the wall.
Getting ready for the visit
- Keep pets and children clear of the area while we work
- For business premises, tell us about site rules or sign-in
- Tell us if parking is tricky
Get a quote
A good description makes for an accurate quote. Let us know the location, the problem and roughly how many joints.
Read more
Aftercare tips
Simple care keeps the joints in good condition. We recommend:
- Leave the joints unpainted unless we have said otherwise
- Have failed joints looked at early
- Don’t let climbing plants root in the sealant
- Keep movement joints as flexible joints, not mortar
Look over the joints once a year, ideally after winter. Watch for splits, edges coming away or growth in the joint.
Gaps, plants or missing sealant in a joint are worth getting looked at. Early work is quicker and leaves a better finish.
What affects the cost of external mastic
Every job gets its own quote. This is what makes a difference:
- Mould in or behind the old joints
- The type of sealant required
- How many rooms, windows or areas are involved
- Working hours on commercial sites
Some things make a job bigger or smaller: how much old sealant there is and how stubborn it is, any mould to treat, and whether the work is at height. We take all of that into account in your quote.
What to tell us for a quote
You do not need to know the technical terms. Just tell us:
- How we’d reach the joints
- Where the property is
- If it’s domestic, commercial or a hotel
- What the problem is, such as mould, gaps, leaks or cracking
Call for a quick quote, or send an email if you’d rather. Tell us about the joints that need doing and we will talk you through the work.
Leave it or put it right?
Resealing a run of joints in one go is usually better than patching one at a time. Joints of the same age tend to fail together, and access only has to be arranged once. 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.
Instead of a standard rate, we look at what your job involves: the amount of work, the old material and the access. You will know the price before we begin.
Why book with us
- You choose the colour before work begins
- Domestic, commercial and hotel work
- An ARBOMaster approved applicator
- Neat joints and a tidy finish
See our cost guide and customer reviews.
What we can’t put right
A few problems are outside what sealant work can do:
- Movement that’s more than a sealant joint can take
- Damp that is not coming from the joint
- Cutting new joints into brickwork, which is building work rather than sealant work
Not sure which it is? You can phone 0345 464 0079 or drop us an email and we will tell you honestly before booking.
Joints and surfaces we work on
- Render & cladding joints
- Joints between brick and frames
- Concrete & block
- Copings & trims
- Brickwork movement joints
- Façade panels
Leatherhead: your questions answered
Can you help a landlord with a rental near Leatherhead station?
Yes, rental work is part of what we do. You can ring 0345 464 0079 or email us with the address and a few details, and we’ll give you a fixed price before any work starts.
Is there a guarantee on external mastic in Leatherhead?
Every job comes with our one-year guarantee, wherever it is. We are also fully insured and ARBOMaster approved.
Do you cover Leatherhead?
Yes, we do. Leatherhead is part of the area we cover.
Can you seal over the old sealant?
No, and we never do. It can look neat for a few weeks, but the new layer lifts away from the old one. Removing the old sealant completely is the only lasting way.
Will the new joint stand out?
Exterior sealants are made in a range of colours, from greys and browns to whites and stone shades. We choose the closest to your brick or render so the joint doesn’t draw the eye.
Why is there a gap in my brick wall?
Walls move with heat, cold and moisture, and planned joints take up that movement. The gap is sealed with a flexible sealant over backing rod.
How long should I leave it?
Most sealants are touch-dry well before they’re fully cured. We’ll tell you how long to leave the joint.
Why do you put foam in the joint first?
The foam is closed-cell backing rod. It stops the sealant going in too deep and bonding to three sides.
External mastic in Leatherhead: local notes
Compared with the north and west, the South East gets less rain, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast. With historic houses such as Polesden Lacey (about 3.4 miles south-west) nearby, there’s older building stock in the area around Leatherhead as well as newer homes. In older buildings, older walls and rooflines need a sealant that moves with them and suits the material.
Letting a property close to Leatherhead station? Then outside joints that have cracked can let damp into a rental, so check them between lets. Homes close to Church of Our Lady and St Peter include some older properties, and older walls, gutters and the joints where extensions meet them need a flexible sealant.
Leatherhead is about 4 miles south-west of Epsom, in Surrey. Jobs in Leatherhead get the same care as everywhere else we work: old sealant removed completely, careful preparation and a one-year guarantee. 395 places in Surrey are on our list, from the larger towns to small villages. You can also see our page for Crawley, about 14 miles away.
Work in KT22 is quoted and booked the same way as anywhere else. Whether your property is on High Street, Church Road and Station Road or a nearby road, our applicators can take on the job. Leatherhead sits on or near the A24 and A245, so getting to you is simple. Close by, we work in 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). Further out, we also cover 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 and the streets around them. There’s a railway station in Leatherhead itself: Leatherhead station. Nearby you will also find Walton on the Hill (3.5 miles east) and Headley Court (2.2 miles east). Green spaces nearby include Claremont Lake and Jubilee Wood.