Kent · England
External Mastic in Matfield
External mastic for Matfield and the surrounding area: the right sealant, proper preparation and a neat finish. Ask us for a quick quote.
- Gaps where render, brick and frames meet
- Damp patches traced to an open external joint
- Rigid filler in a joint that should flex
External mastic in Matfield, done properly
Joints between dissimilar materials, like brick against render or concrete against a steel frame, see movement from both sides. A flexible exterior sealant takes up that movement. We work on render & cladding joints, brickwork movement joints and concrete & block, and people most often call us about cracked joints where brick meets render or frames and joints where the bead has come unstuck.
In a village or hamlet like Matfield, older cottages and farm buildings often stand in the open, where walls and rooflines take the weather head on. Gutter joints and wall joints there need a sealant that can flex and stay put.
A 12-month guarantee comes as standard.
- Place
- Matfield (TN12)
- Region
- Kent
- Guarantee
- One year on every job
- Quotes
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
Can I do it myself?
Some jobs are best left to a professional: work at height, external movement joints, fire-rated sealant and large areas need the right product, the right access and the right method.
Too much sealant is as bad as too little. A thick, smeared bead looks untidy and does not move well, and the joint depth matters as much as the finish.
Common questions in Matfield
Is Matfield in your area for external mastic?
Yes, Matfield is within the area we cover. Our work covers London and the South East. You can call 0345 464 0079 or send us an email and let us know what needs doing.
Can you help a landlord with a rental near Paddock Wood station?
Yes, rental work is part of what we do. Just phone 0345 464 0079 or email us and tell us about the property, and we’ll send you a clear quote.
What do you need from me for a quote?
Let us know what needs doing and where. If we need more, we will ask.
Can you seal joints between render and window frames?
Yes. Joints between dissimilar materials are a big part of external work. We use a flexible sealant suited to both surfaces with primer where required.
How do you reach high-level joints?
That depends on how high the joints are and the ground below. Ground-floor joints are simple; for higher ones, send details and we will confirm the access.
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.
What colours does the sealant come in?
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 does not stand out.
Where are you based?
Mr Mastic is based in Crawley. We cover Matfield and the rest of Kent.
What we can’t put right
In fairness, some problems need a different trade:
- Cracking across the wall rather than at a joint
- Failed render or damaged cladding panels
- Structural movement, which needs a surveyor or engineer
If you’re not sure, just phone 0345 464 0079 or drop us an email and we will give you a straight answer before booking.
Where we work in Matfield
- Concrete & block
- Render & cladding joints
- Joints between brick and frames
- Façade panels
- Brickwork movement joints
- Copings & trims
Landlord and commercial work in Matfield
Hotels need rooms back in use, so the work can be planned room by room. We have worked in hotels as well as homes and businesses.
If you manage several properties in or around Matfield, several properties can be quoted together. Send us the addresses and the work at each.
The process
When we get to you, we check the joints match what you told us. If anything is different, we explain it before carrying on. After that, the work takes a few hours to a few days, depending on the length of joint and the access. For a village or hamlet like Matfield, the journey is planned in advance: 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.
- Each joint is checked and the colour of the new sealant agreed.
- Failed sealant is removed back to clean, sound faces.
- Closed-cell backing rod is pushed in so the sealant bonds to two sides only.
- Primer is applied wherever the sealant needs it.
- A low-modulus exterior sealant is gunned in and tooled to a neat finish.
Before we arrive
- Tell us about any previous sealing or DIY attempts
- Clear items away from the joints we’re working on
- Plan for the work area to be out of bounds to pets and children
How to get a quote
We do not publish a price list. Instead, your job gets its own clear quote. To arrange one, ring 0345 464 0079 or drop us an email.
Related advice
What we are called out for in Matfield
If plants are growing out of a joint, the sealant has generally failed or was never there. Dirt and roots then trap moisture in the joint and speed up the damage.
It’s worth asking for a quote if you see:
- Joints where the bead has come unstuck
- Weeds or debris growing in open joints
- Water getting into walls through failed joints
- Rigid filler in a joint that should flex
Letting a property close to Paddock Wood station? Then failed wall and movement joints let damp in, so they’re worth checking between tenancies.
Comparing quotes
- What the cure time is
- What happens if the job turns out different
- How long the guarantee is
- How the colour is chosen
What affects the quote in Matfield
Some jobs are bigger than they look, and some smaller. The main factors:
- Any mould that needs treating
- The old material and how stubborn it is
- Whether the work is at height
- How many rooms, windows or areas are involved
Doing several joints on one visit usually makes better use of the time than several visits, so tell us about everything that needs sealing. We will give you a clear quote for the lot.
What we need to know
Before you ask for a quote, have a think about:
- What’s wrong with the joints now
- The address or postcode of the job
- How we’d reach the joints
- Any previous sealing or DIY work
It all starts with a short chat. Tell us what’s wrong, where it is and how much there is. Whenever you are ready, phone 0345 464 0079 or email us.
How to look after the new joints
Simple care keeps the joints in good condition. Our advice:
- Keep high-pressure jets off the joints
- Show decorators and builders where the movement joints are
- Check the sealant is paintable before painting near it
- Do not let climbing plants root in the sealant
Keep the joints clear of soil, plants and climbing growth. Anything that holds water against the joint wears it out sooner.
Gaps, plants or missing sealant in a joint are worth getting looked at. Earlier resealing means a smaller job and a better result.
Outside joints around Matfield
London and the South East are among the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast. Historic houses like Scotney Castle (about 4.5 miles south) are a reminder that the area around Matfield has older buildings as well as new. In older buildings, older walls and rooflines need a sealant that moves with them and suits the material.
In the older streets around Ebenezer Church (Matfield), the joints between older walls, newer extensions and the roofline need a sealant that can move. If you look after a building such as Brenchley and Matfield Church of England Primary School, larger buildings have long runs of movement joint that eventually need resealing.
Matfield is about 5 miles east of Royal Tunbridge Wells, in Kent. Whether you’re in the middle of Matfield or further out, external mastic is available for homes and businesses alike, from flats and houses to offices and hotels. Across Kent, we cover 922 places, and Matfield is one of them. You can also see our page for Crawley, roughly 25 miles from Matfield.
Postcode districts we cover here for external mastic: TN12. Local streets include Standings Close, Homebush Green and Chestnut Lane, and we cover them all. We also cover Petteridge (1 mile south-east), Brenchley (1 mile east), Colt's Hill (1 mile north-west), Key's Green (2 miles south-west) and Paddock Wood (2 miles north-east). Further out, we also cover Maidstone (10 miles north-east), Sevenoaks (12 miles north-west), Royal Tunbridge Wells (5 miles west), Tonbridge (5 miles north-west), Kings Hill (8 miles north) and Foley Park (11 miles north-east).
Near you in Matfield
Around Matfield, our work takes us to homes and buildings near The Poet at Matfield pub, Brenchley Wood and Mascalls School and the streets around them. The nearest railway station is Paddock Wood station, about 2.1 miles north of the centre. Well-known places in the area include Tunbridge Wells Hospital (2.9 miles west) and The Hop Farm Museum (3.1 miles north). The countryside around Matfield includes Tudeley Woods RSPB reserve.