Surrey · England
External & façade joints in Cobham, Surrey
Movement joints in Cobham need attention? We cut out the old, prepare the joints and apply the right sealant.
- Weeds or debris growing in open joints
- Rain getting behind render or cladding at a joint
- Panel joints letting water in
How we quote for external mastic
We quote each job individually. This is what makes a difference:
- The product the joint needs
- Mould in or behind the old joints
- The size of the job
- How many rooms, windows or areas are involved
Doing several joints on one visit is usually more efficient than separate visits, so tell us about everything that needs sealing. You will get one clear quote for the whole job.
What we need to know
A few details help us give you an accurate quote. When you get in contact, it helps to mention:
- The address or postcode of the job
- Access, such as stairs, a lift or height
- How many joints, rooms or windows are involved
- Pictures of the joints, sent by email
We do not publish a price list, as no two jobs are quite the same. Instead, your job gets its own clear quote. To get started, call 0345 464 0079 or email us.
About our external mastic in Cobham
We cut out failed sealant, set the joint depth with closed-cell backing rod and reseal with a low-modulus exterior sealant. We pick a colour that sits well with the wall. We work on brickwork movement joints, copings & trims and concrete & block, and common reasons people get in touch are brick movement joints where the sealant has split and failed sealant between panels on a façade.
Around Cobham, garages, outbuildings and extensions all add to the joints on the outside of a home. Gutter ends, garage door frames and the joints where an extension meets the house are typical spots for leaks.
A 12-month guarantee comes as standard, so you’re covered after we have gone.
- Where
- Cobham (KT11)
- Region
- Surrey
- Guarantee
- A year, on every job
- Price
- Quoted before any work starts
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
Places near Cobham
Also in Cobham
How it works
There isn’t much for you to do on the day. Show us the job and we will take it from there. The job generally takes anything from a few hours to several days, depending on the building, including the tidy-up. In a smaller place like Cobham, parking is seldom the issue; lanes, gates and long drives are worth mentioning. If the job is outside, tell us about side access and how high the joints are.
- We look at every joint and agree a colour to suit the wall.
- We take out the old sealant until the faces are sound.
- Closed-cell backing rod is pushed in so the sealant bonds to two sides only.
- We prime the faces where required.
- We gun in low-modulus sealant and tool it neatly.
Before we arrive
- Let us know about parking restrictions
- Mention any tricky access
- Mention any leaks or damp you’ve noticed
Ask for a quote
It all starts with a short chat. Describe the problem, the location and the size of the job, and we will talk you through what we’d do. Whenever you are ready, ring 0345 464 0079 or email us.
Advice
How the job changes by surface
Concrete and blockwork
The face of concrete or block is often dusty, so preparation is key. We prime where the sealant needs it before the bead.
Cladding and façade panels
Panel systems often rely on sealant between and around the panels. Each joint gets a sealant that suits the panel and its movement.
FAQs for Cobham
Do you cover smaller places like Cobham?
Yes, we do. We work across London and the South East, from towns to the smallest places. Longer journeys are simply planned in advance.
Can you do external mastic in Cobham?
Yes, Cobham is within the area we cover. Our work covers London and the South East. You can ring 0345 464 0079 or send us an email and let us know what needs doing.
Is there a guarantee?
Yes. Every job comes with a 12-month guarantee.
Can you seal joints between render and window frames?
Yes. We cut out the old sealant, prepare both faces and reseal with a flexible exterior product. The colour is chosen to suit.
Are you ARBOMaster approved?
Yes. ARBOMaster is the approved applicator scheme for Arbo sealants, and we’re part of it.
Do the sealants smell?
It depends on the product. Some smell for a while, some hardly at all, and any smell fades as they cure.
Why do you put foam in the joint first?
Backing rod controls the sealant depth and keeps it off the back of the joint. That way it bonds to the two sides only and can stretch.
Do you work at height?
It depends on the building. Where joints can be reached safely, we’ll do them. Tell us about the building and we’ll confirm what access is needed.
Looking after it afterwards
Joint life depends on how it’s used and looked after. Here’s what we suggest:
- Leave the joints unpainted unless we have said otherwise
- Keep water from gutters off the wall
- Look over the joints every year, ideally after winter
- Point out the joints to other trades
Avoid pressure-washing straight into the joints. A strong jet can damage the edges of the bead over time.
Leave a failed movement joint and water keeps getting into the wall. Over time it can mean damp inside, stained render or frost-damaged brick.
What we can’t put right
To be straight with you, some problems need a different trade:
- Subsidence or other structural problems
- Cracking across the wall rather than at a joint
- Cutting new joints into brickwork, which is building work rather than sealant work
Not sure which it is? You can call 0345 464 0079 or email us and we’ll tell you honestly.
Surfaces we seal
- Joints between brick and frames
- Façade panels
- Render & cladding joints
- Concrete & block
- Copings & trims
- Brickwork movement joints
Work for landlords, hotels and businesses
Landlords and letting agents in Cobham can book us as well as householders. Sealant work between tenants is a simple way to keep a property in good order before the next move-in.
For anyone letting property in or around Cobham, several properties can go on one quote. Just tell us the addresses and what each one needs.
Cobham buildings and the weather
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 The Homewood (about 1.2 miles north) nearby, there’s older building stock in the area around Cobham as well as newer homes. Where a home is older, older brick and stone need a sealant that suits them, at the right joint depth.
For an older house near a landmark such as Church of St Andrew, the joints between older walls, newer extensions and the roofline need a sealant that can move. If you let a flat or house near Cobham & Stoke Dabernon station, outside joints that have cracked can let damp into a rental, so check them between lets. If you look after a building such as St Andrew's CofE Primary School, movement joints, cladding joints and gutters on larger buildings need the same care as a house’s.
Cobham is about 6 miles west of Epsom, in Surrey. For external mastic in and around Cobham, please ring 0345 464 0079 or email us for a quick quote. We cover Surrey from our Crawley base, Cobham included. Cobham is one of 395 towns and villages in Surrey we cover. London is on our list too, about 17 miles from Cobham.
All of KT11 is covered for external mastic. Streets in the area include High Street, Summerhays and Fairfield Park, all of which we cover. If you’re just outside Cobham, we cover Stoke D'Abernon (1 mile south-east), Oxshott (2 miles east), West End (2 miles north), Pachesham Park (3 miles east) and Esher (3 miles north-east). Within a short drive, we also cover Guildford (10 miles south-west), Woking (8 miles west), Camberley (14 miles west), Epsom (6 miles east), Horley (15 miles south-east) and Redhill (12 miles south-east).
What’s near Cobham
We work in homes and buildings around The Running Mare pub and West End Common and the streets around them. The nearest railway station is Cobham & Stoke Dabernon station, about 1.1 miles south. Other landmarks nearby include Elmbridge Museum (3 miles north-east) and Chessington Castle Hill (4.9 miles east). Green spaces nearby include Jubilee Wood and Claremont Lake.
Should I try it myself first?
Some sealant jobs are within reach of a careful DIYer, 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.
The difference is mostly in the preparation and the product. Joints are cleaned back to sound surfaces and dried, and the sealant is matched to the joint and its conditions, then guaranteed for a year.