Kent · England
External & façade joints in Chipstead, Kent
Sealing brickwork movement joints, render, cladding and façade joints in Chipstead, with a 12-month guarantee on every job. Ask us for a quote.
- Joints where the bead has come unstuck
- Weeds or debris growing in open joints
- Leaking joints around cladding and façade panels
What we do, step by step
Good joint work is mostly preparation, and we do not rush it. Every joint is cleaned and dried before new material goes in. All told, the work takes a few hours for a handful of joints, longer for a whole elevation. Somewhere like Chipstead needs a little journey planning: tell us about narrow lanes, gates, long drives and where we can park. We bring what the job needs, so it can be finished in one trip where possible.
- First we look over the joints with you, agree which to renew and talk through access.
- We cut out the failed sealant and rake out any dirt or growth.
- Both sides are cleaned back to sound material and primed if needed.
- Closed-cell backing rod is fitted to set the depth and stop three-sided bonding.
- The new sealant, chosen to suit the brick or render, is applied and tooled to a neat finish.
How to prepare
- Try not to wet indoor joints just before the visit
- Let us know if you’ve seen damp or leaks
- Mention any sign-in or site rules at work premises
How to get a quote
Want a quote for external mastic? Please call 0345 464 0079 or drop us an email with a few details. We’ll explain what we’d do and give you a clear price before we start.
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External mastic for homes and businesses in Chipstead
We are ARBOMaster approved applicators, and each external joint gets a sealant suited to it. Porous or awkward surfaces are primed where the sealant needs it, and we don’t skip that step. We work on brickwork movement joints, façade panels and concrete & block, and people most often call us about plants rooting in failed movement joints and rigid filler in a joint that should flex.
Around Chipstead, older buildings can be stone, brick or timber-framed, many with extensions added later. Where one material meets another is where water usually gets in, and they need the right sealant at the right depth.
We stand behind the work with a one-year guarantee.
- Place
- Chipstead (TN13, TN14)
- Region
- Kent
- Guarantee
- 12 months on all our work
- Price
- Quoted before any work starts
- Call
- 0345 464 0079
- Updated
- 26 October 2026
Common problems we fix in Chipstead
Many joints fail because they were sealed too deep or with nothing behind them. Sealant bonded to three sides has nowhere to go and tears as soon as the joint widens.
The problems people usually mention when they call include:
- Failed seals between different materials
- Brick movement joints where the sealant has split
- Joints where the bead has come unstuck
- Rain getting behind render or cladding at a joint
Letting a property close to Dunton Green station? Then outside joints that have cracked can let damp into a rental, so check them between lets.
What to look for in a quote
- Is the old sealant removed completely?
- How long to leave it before use
- How the colour is chosen
- How the surfaces are prepared before sealing
Walls and rooflines in Chipstead
London and the South East are among the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day. With historic houses such as Knole House (about 2.8 miles south-east) nearby, there’s older building stock in the area around Chipstead 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.
If you look after a building such as Amherst School, movement joints, cladding joints and gutters on larger buildings need the same care as a house’s. If you live in an older home near Chapel of the Good Shepherd, old and new materials meet at the roofline and walls, which is where sealant earns its keep.
Chipstead is about 2 miles west of Sevenoaks, in Kent. We provide external mastic to homes and businesses in Chipstead. 922 places in Kent are on our list, from the larger towns to small villages. For nearby work, see our London page (18 miles or so).
Every address in TN13 and TN14 is within our area for external mastic. Whether your property is on High Street, Homedean Road and Chevening Road or a nearby road, we can help. Nearby, we also carry out external mastic in Bessels Green (1 mile south-east), Riverhead (1 mile east), Dunton Green (1 mile north-east), Sundridge (1 mile south-west) and Chevening (1 mile north-west). Within a short drive, we also cover Dartford (11 miles north), Royal Tunbridge Wells (12 miles south-east), Gravesend (14 miles north-east), Tonbridge (8 miles south-east), Northfleet (13 miles north-east) and Swanley (8 miles north).
Near you in Chipstead
In Chipstead, that means homes and buildings near Montreal Park, The Bricklayers Arms and Trinity School, among other places. Chipstead’s nearest station is Dunton Green station, about 1.2 miles north-east of the centre. A little further out are Sevenoaks Museum (2.2 miles south-east) and Kemsing Castle Bank (3.8 miles north-east). The countryside around Chipstead includes Betsom's Hill and Dryhill Nature Reserve.
For landlords and businesses
For anyone letting property in or around Chipstead, several properties can go on one quote. Send us the addresses and the work at each, and photos by email help.
Letting agents often deal with us directly. Send the address, what’s needed and the access arrangements and we will quote.
How we quote for external mastic
We don’t publish a price list, because no two jobs are the same. What we look at:
- Working hours on commercial sites
- Mould in or behind the old joints
- Whether the work is at height
- How much old sealant there is and how hard it is to remove
The cost depends on the size of the job, how much old material has to come out and access to the work. You’ll have a clear quote before any work starts.
What we need to know
Photos help, but a description is a good start. Please mention:
- What’s wrong with the joints now
- How we’d reach the joints
- If it’s domestic, commercial or a hotel
- A few pictures by email, if you can
If you are in Chipstead and need external mastic, call 0345 464 0079 or drop us an email. A short description of the job and where it is helps us quote, and you’ll get a clear quote before any work starts.
Keeping the joints in good condition
Aftercare is simple:
- Leave the joints unpainted unless we have said otherwise
- Clear growth from the base of walls and joints
- Never let anyone fill a movement joint with mortar
- Keep high-pressure jets off the joints
Only paint over the joint if we have confirmed the sealant can take paint. Many exterior sealants aren’t designed to be painted.
Small splits are the time to act. Then it’s a straightforward cut-out and reseal.
Why deal with it now?
An open joint keeps letting water into the wall with every downpour. Wet masonry is more easily damaged by frost near the open joint, so the problem grows beyond the joint itself. Around Chipstead, older homes often have timber in their floors and frames, and water through a failed joint can rot timber if it’s left.
Homes and businesses are quoted the same way: how much there is to do, how we reach it and what it needs, plus any working-time requirements on site. Call for a quick quote and we will explain what it covers.
Why us?
- Rated 4.9 stars on Google
- Fully insured
- Trusted Arbo and Everbuild sealants
- ARBOMaster approved applicator
Take a look at what affects the cost and what customers say.
DIY versus a professional finish
Some jobs are best left to a professional: high-level joints, fire-rated gaps, external movement joints and big jobs call for the right materials, safe access and experience.
What a professional job adds is preparation and the right product. Joints are cleaned back to sound surfaces and dried, and the sealant is matched to the joint and its conditions, and the work is guaranteed for a year.
FAQs for Chipstead
I let a flat near Dunton Green station. Can you help?
Yes, landlords and agents are among the people we work for. You can phone 0345 464 0079 or drop us an email with the details for a clear quote.
Can you do external mastic in Chipstead?
Yes, Chipstead is within the area we cover. We work across London and the South East. You can ring 0345 464 0079 or email us and let us know what needs doing, and we’ll send you a clear quote.
What’s an expansion joint in brickwork?
A vertical gap in a long brick wall is generally a movement joint. It gives the wall room to move and needs a flexible seal, not mortar.
Why do you put foam in the joint first?
That’s backing rod, a closed-cell foam. It keeps the sealant at the right depth and bonded to the sides only, which would stop it stretching.
Are you fully insured?
Yes. Mr Mastic is fully insured, with over 20 years’ experience in sealant work.
How long does external mastic take?
Most jobs take anything from a few hours to several days, depending on the building. We will confirm how long when we quote.
What should I tell you?
Let us know what needs doing and where. If we need more, we will ask.
How long should I leave it?
That depends on the sealant used, so please follow the time we give you.