Kent · England
External & façade joints in Claygate, Kent
Professional external mastic in and around Claygate, with every bit of old sealant taken out first.
- Brick movement joints where the sealant has split
- Failed seals between different materials
- Moss and dirt in joints with no sealant left
External mastic in Claygate
Movement joints let brickwork, render and cladding expand and shrink without cracking. Its sealant has to flex with the building, season after season, and when it fails, the wall takes the strain and water finds a way in. We work on façade panels, copings & trims and joints between brick and frames, and people most often call us about joints with sealant missing in places and rain getting behind render or cladding at a joint.
External sealant needs dry, clean surfaces, so work around Claygate is planned for dry weather. Tell us about access to all sides of the building, including outbuildings and garages.
Whatever the size of the job, you get the same 12-month guarantee.
- Where
- Claygate (TN12)
- Wider area
- Kent
- Cover
- One year on every job
- Quote
- A clear quote up front
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
Work for landlords, hotels and businesses
We regularly work with letting and managing agents. Send the address, what’s needed and the access arrangements and we’ll give you a quote.
Letting agents and landlords in Claygate can book us as well as homeowners. Sealant work between tenants is a simple way to keep a property in good order.
The process
We bring everything the job needs with us, so you do not need to buy or prepare anything. Once we have agreed what’s being done, the area is protected and the work begins. It normally takes a few hours for a handful of joints, longer for a whole elevation. Somewhere like Claygate needs a little journey planning: tell us about narrow lanes, gates, long drives and where we can park. Everything for the job comes with us, so a second trip is avoided where possible.
- Each joint is checked and the colour of the new sealant agreed.
- 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.
- Primer is applied wherever the sealant needs it.
- We gun in low-modulus sealant and tool it neatly.
How to prepare
- Mention any tricky access
- Mention any sign-in or site rules at work premises
- Mention any leaks or damp you’ve noticed
How to get a quote
Asking for a quote is easy: let us know the job and the location. Photos by email help us understand the job, and we will take it from there.
Read more
Honest limits
In fairness, there are a few things sealant won’t fix:
- Damp from another source, such as a leaking gutter or a bridged damp-proof course
- Cracked brickwork or render that needs a builder or plasterer
- Walls that need new movement joints cut into them
Not sure which it is? You can phone 0345 464 0079 or email us and we’ll tell you honestly before booking.
Surfaces we seal
- Render & cladding joints
- Joints between brick and frames
- Façade panels
- Concrete & block
- Brickwork movement joints
- Copings & trims
When to call us in Claygate
Using the wrong sealant is another common reason. A high-modulus or general-purpose sealant can be too rigid for a busy joint, so it pulls away from the edges.
People normally contact us when they notice something like this:
- Failed seals between different materials
- Damp patches traced to an open external joint
- Old sealant gone brittle and cracked
- Failed sealant between panels on a façade
For an older house near a landmark such as Church of St Margaret, an extension built onto an older house moves differently, and the joint between them takes the strain.
What your quote should include
- Is the old sealant removed completely?
- Who turns up on the day
- Whether you can choose the colour
- What preparation is included
DIY sealant or a professional job?
Overfilling a joint is a classic DIY mistake. A thick, smeared bead looks untidy and does not move well, and getting the depth right matters as much as the look.
If you do try it yourself, take your time over the preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it doesn’t work out, we can still put it right.
Looking after it afterwards
Good habits help new joints last longer. Our tips:
- Wash walls gently around the sealant
- Check external joints each spring
- Keep water from gutters off the wall
- Have failed joints looked at early
Have a quick look at the joints each spring. Splits, gaps at the edges or plants in the joint are early warning signs.
Once a joint cannot move, the wall finds another way, generally as cracking in the brickwork or render nearby. Catch it early and you reduce the risk.
Also in Claygate
Common questions in Claygate
Is Claygate in your area for external mastic?
Yes, Claygate is within the area we cover. We work across London and the South East. You can phone 0345 464 0079 or drop us an email and tell us what needs doing, and we will give you a clear quote.
Will you come out to Claygate?
Yes. Claygate is within the area we cover, which takes in towns, villages and rural addresses. We work across London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Where do you work from?
We are a Crawley-based firm. Our area covers South East England, London and Scotland.
How often do external joints need resealing?
That depends on the wall, the weather and the movement. Signs to watch for are cracking, hardening and gaps at the edges, and reseal at that point.
Can you match the colour of my brickwork?
Exterior sealants are made in a range of colours, from greys and browns to whites and stone shades. We pick the one that suits your wall best so it doesn’t stand out.
Do you work for letting agents?
Yes. Domestic, commercial and hotel work are all part of what we do.
What’s an expansion joint in brickwork?
Most straight vertical gaps in brickwork are movement joints. It lets the bricks expand without cracking, and it should be sealed with a flexible sealant.
Can I add another job to the visit?
Yes. Several rooms, windows or areas can go on one quote.
What affects the cost of external mastic
There’s no set price list. The quote depends on:
- How many areas need sealing
- When we can work, for business premises
- Mould in or behind the old joints
- Whether old sealant or filler has to be cut out
There are no prices on our website, because each job is priced on what it involves. Call for a quick quote.
Helping us quote
There’s no need for technical detail. Just tell us:
- How we’d reach the joints
- A few pictures by email, if you can
- Any previous sealing or DIY work
- What’s wrong with the joints now
We quote each job on its own, so start by telling us what you need. Simply ring 0345 464 0079 or drop us an email and describe the job.
Outside joints around Claygate
Rainfall in the South East is lower than in much of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
If you let a flat or house near Marden station, failed wall and movement joints let damp in, so they’re worth checking between tenancies.
Claygate is about 7 miles south-west of Maidstone, in Kent. We provide external mastic to homes and businesses in Claygate and nearby, as part of our work across Kent. Our area takes in 922 places across Kent, large and small. There’s also a page for Crawley, roughly 28 miles from Claygate.
Work in TN12 works the same way as everywhere else we cover. You’ll find streets such as Sheephurst Lane, Maidstone Road and Spenny Lane. Other places close to Claygate include Pearson's Green (1 mile south-west), Marden Beech (2 miles south-east), Marden (2 miles east), Queen Street (2 miles north-west) and Castle Hill (2 miles south-west). Larger places within reach include Maidstone (7 miles north-east), Sevenoaks (14 miles north-west), Royal Tunbridge Wells (8 miles west), Tonbridge (8 miles west), Kings Hill (7 miles north) and Foley Park (8 miles north-east).
Around Claygate
Locally, jobs take us to homes and businesses close to The White Hart pub, among other places. Claygate’s nearest station is Marden station, roughly 1.8 miles east. Nearby you will also find South East Romany Museum (2.7 miles east).