Kent · England
External Mastic in Chillenden
External mastic across Chillenden and nearby, with old sealant always removed completely and a 12-month guarantee.
- Failed seals between different materials
- Moss and dirt in joints with no sealant left
- Leaking joints around cladding and façade panels
External mastic in Chillenden
Where two different materials meet, such as brick and render or blockwork and metal, they move at different rates. A flexible exterior sealant takes up that movement where mortar or filler would crack. We work on copings & trims, render & cladding joints and concrete & block, and people most often call us about sealant that has lost its bond to the brick or render and hard, crazed mastic that has stopped moving.
External sealant needs dry, clean surfaces, so work around Chillenden is planned for dry weather. Tell us about access to all sides of the building, including outbuildings and garages.
We stand behind the work with a one-year guarantee, so you’re not left on your own once the job is done.
- Place
- Chillenden (CT3)
- Wider area
- Kent
- Cover
- A year, on every job
- Price
- A clear price before we start
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
What we can’t put right
Some problems need a builder, plumber or other trade rather than us:
- Loose or hollow render, which needs re-rendering
- Cutting new joints into brickwork, which is building work rather than sealant work
- Damp from another source, such as a leaking gutter or a bridged damp-proof course
If in doubt, phone 0345 464 0079 or drop us an email and we’ll say what we think before booking.
Joints and surfaces we work on
- Copings & trims
- Joints between brick and frames
- Brickwork movement joints
- Render & cladding joints
- Façade panels
- Concrete & block
What we do, step by step
The work is kept neat and contained to the area we are working on, so you can carry on as normal. Expect the work to take a few hours for a handful of joints, longer for a whole elevation, and we tell you how long to leave it before we go. In a small place like Chillenden, access is normally the main thing to plan. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- We start by walking round the building and agreeing the joints and the access.
- Every bit of old sealant and any mortar or debris is cut out.
- The faces are brushed clean and primed where the product requires it.
- Backing rod sized to the joint goes in to set the depth.
- We apply the sealant, tool it and check the whole run.
Before we arrive
- Mention any parking rules near the property
- Try not to wet indoor joints just before the visit
- Tell us about any previous sealing or DIY attempts
Get a quote
Quotes start with a quick conversation. Tell us what’s wrong, where it is and how much there is, and we’ll explain how we’d tackle it. When it suits you, call 0345 464 0079 or email us.
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Can I do it myself?
Too much sealant is as bad as too little. A heavy bead looks messy and copes badly with movement, and getting the depth right matters as much as the look.
If you’ve already had a go yourself, that is fine. We remove it and do the joint properly, so tell us about it when you ask for a quote.
Landlord and commercial work in Chillenden
Mouldy or split sealant often shows up at the end of a tenancy. We can quote for more than one property at once.
We work for landlords and agents as well as homeowners. Resealing between tenancies is a simple way to keep a property in good order before the next move-in.
Questions from Chillenden
Do you cover Chillenden for external mastic?
Yes. We work across London and the South East, and Chillenden is part of that. Just call 0345 464 0079 or send us an email with a few details of the job, and we’ll give you a clear quote.
Can you help a landlord with a rental near Aylesham station?
Yes. We work for landlords and agents as well as homeowners. Just ring 0345 464 0079 or email us with the address and what needs doing, and we will give you a clear price.
Can I add another job to the visit?
Yes, and it often makes sense. Doing several areas at once is generally more efficient.
Do I need to be at home?
For indoor joints, yes, someone needs to let us in. Once we have agreed the job, you do not need to watch us work.
Is there a guarantee?
Yes. Every job comes with our one-year guarantee.
What information do you need?
Tell us what needs doing and where. We’ll ask anything else we need to know.
Do you hold any approvals?
Yes. We are ARBOMaster approved, the scheme for applicators of Arbo sealants.
Can you work on commercial sites?
Yes. We work in offices, washrooms, hotels and other commercial premises, as well as homes. We can talk about working times when we quote.
What affects the cost of external mastic
There’s no set price list, because jobs vary so much. What we look at:
- Any mould that needs treating
- The old material and how stubborn it is
- The type of sealant required
- The number and length of the joints
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 we need extra access for height. We take all of that into account in your quote.
What we need to know
When you contact us, these details help:
- Pictures of the joints, sent by email
- Access, such as stairs, a lift or height
- How many joints, rooms or windows are involved
- If it’s domestic, commercial or a hotel
Asking for a quote is easy: let us know the job and the location, and roughly how big it is. A few pictures by email make the job easier to understand, and we will take it from there.
Places near Chillenden
Other services in Chillenden
How to look after the new joints
Looking after new joints is easy:
- Keep high-pressure jets off the joints
- Show decorators and builders where the movement joints are
- Fix overflowing gutters above sealed joints
- Ask before painting over external sealant
If you have more work done on the wall, such as new render, cladding or an opening, show the contractor the movement joints. They should be kept open and resealed, not filled.
Leaks behind façade panels and render often go unseen. By the time there’s a damp patch, the damage can be well established.
What external mastic looks like in Chillenden
Rainfall in the South East is lower than in much of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast. Historic houses like Goodnestone Park (about 1.2 miles north-west) are a reminder that the area around Chillenden has older buildings as well as new. Where a home is older, older brick and stone need a sealant that suits them, at the right joint depth.
Schools such as Goodnestone Church of England Primary School are buildings too, and its movement joints, gutters and trims need looking after like any other building’s. In the older streets around Church of All Saints, older walls, gutters and the joints where extensions meet them need a flexible sealant. If you let a flat or house near Aylesham station, outside joints that have cracked can let damp into a rental, so check them between lets.
Chillenden is about 6 miles west of Deal, in Kent. Chillenden gets the same service as everywhere we cover: old sealant removed completely, careful preparation and a 12-month guarantee. Chillenden is one of 922 places in Kent where we work for external mastic. We also work in Chelmsford, about 48 miles from Chillenden.
Here we cover the CT3 postcode area for external mastic. Other places close to Chillenden include Goodnestone (1 mile north-west), Nonington (1 mile south-west), Heronden (2 miles east), Barnsole (2 miles north) and Hammill Park (2 miles north-east). Larger places within reach include Canterbury (8 miles west), Margate (11 miles north-east), Dover (7 miles south), Folkestone (11 miles south), Ramsgate (10 miles north-east) and Broadstairs (12 miles north-east).
Landmarks near Chillenden
The closest station to Chillenden is Aylesham station, roughly 1.9 miles west of the centre. Open spaces near Chillenden include Monk's Wall nature reserve.
Why act early in Chillenden
Done well, a resealed joint is a neat, straight line that suits the wall. A hurried job with smeared edges and no backing looks worse and fails sooner, so it pays to do it properly once. Where a wall is exposed, as many are in small places like Chillenden, wind-driven rain gets into any failed joint, and older walls, once damp, take a long time to dry.
The cost reflects the work involved, not guesswork. That’s why we ask about the job first and agree the price before starting.
Why us?
- We’re fully insured
- Anti-fungal sanitary silicone in wet areas
- Any old sealant cut out fully, not covered over
- Over 20 years’ experience
Take a look at our cost guide and what customers say.