Kent · England
External & façade joints in Newtown, Kent
Sealing brickwork movement joints, render, cladding and façade joints for homes and businesses in Newtown and across Kent. Fully insured, ARBOMaster approved and guaranteed for a year.
- Movement joints filled with mortar instead of sealant
- Hard, crazed mastic that has stopped moving
- Failed sealant between panels on a façade
Keeping the joints in good condition
Looking after new joints is easy:
- Clear growth from the base of walls and joints
- Keep movement joints as flexible joints, not mortar
- Walk round the building once a year and look at the joints
- Point out the joints to other trades
Follow the cure time we give you before the joint is knocked or disturbed. Most exterior sealants skin fast but take longer to cure right through.
Small splits are the time to act. At that stage it’s a simple cut out and reseal.
External mastic in Newtown, done properly
Failed sealant is cut out, the depth set with closed-cell backing rod, and the joint resealed with a low-modulus sealant made for outside. The colour is chosen to suit the brick or render. We work on joints between brick and frames, copings & trims and render & cladding joints, and common reasons people get in touch are sealant pulling away from one side of the joint and movement joints with cracked, split or missing sealant.
External sealant needs dry, clean surfaces, so work around Newtown is planned for dry weather. Tell us about access to all sides of the building, including outbuildings and garages.
The work is guaranteed for twelve months. If something is not right with it in that time, tell us and we’ll put it right.
- Place
- Newtown (TN8)
- Region
- Kent
- Cover
- A year, on every job
- Quote
- A clear quote up front
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
Walls and rooflines in Newtown
London and the South East are among the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind. Historic houses like Hever Castle (about 1 mile north) are a reminder that the area around Newtown 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.
If you let a flat or house near Hever station, failed wall and movement joints let damp in, so they’re worth checking between tenancies. In the older streets around Church of the Holy Trinity, the joints between older walls, newer extensions and the roofline need a sealant that can move. Schools such as Hever Church of England Voluntary Aided Primary School are buildings too, and movement joints, cladding joints and gutters on larger buildings need the same care as a house’s.
Newtown is about 6 miles north-east of East Grinstead, in Kent. Homes, rented property, offices and hotels in Newtown is covered for external mastic, old or new, large or small. The work is guaranteed for a year. We cover 922 towns and villages across Kent, from the larger towns to small villages. We also work in Crawley, around 14 miles away.
Jobs for external mastic in TN8 is quoted and booked the same way as anywhere else. If you need external mastic at a property on Pigdown Lane and Uckfield Lane or a nearby road, our applicators can take on the job. If you’re just outside Newtown, we cover Markbeech (1 mile south), Hever (1 mile north), Chiddingstone Hoath (1 mile south-east), How Green (2 miles north) and Walter's Green (3 miles south-east). Larger places within reach include Sevenoaks (8 miles north-east), Royal Tunbridge Wells (7 miles east), Tonbridge (7 miles east), Kings Hill (14 miles north-east), Paddock Wood (12 miles east) and Southborough (6 miles east).
Around Newtown
Locally, jobs take us to homes and businesses close to The Kentish Horse pub and Chiddingstone Castle Park and Gardens. The closest station to Newtown is Hever station, roughly 1 mile north-west of the centre. Well-known places in the area include Haxted Watermill Museum (3.8 miles west) and Hever Castle (1 mile north).
When something else is needed
Some problems need a builder, plumber or other trade rather than us:
- Movement that is more than a sealant joint can take
- Damp from another source, such as a leaking gutter or a bridged damp-proof course
- Walls that need new movement joints cut into them
If you’re not sure, just phone 0345 464 0079 or email us and we will give you a straight answer before booking.
Where we work in Newtown
- Brickwork movement joints
- Render & cladding joints
- Copings & trims
- Concrete & block
- Façade panels
- Joints between brick and frames
Landlords, agents and businesses in Newtown
Water getting past a failed joint can damage the building, which is a bigger problem in a rented property. Keeping joints in good order is simple maintenance.
Mouldy or split sealant often shows up at the end of a tenancy. We can quote for more than one property at once.
Towns and villages near Newtown
Also in Newtown
DIY sealant or a professional job?
Too much sealant is as bad as too little. A thick, smeared bead looks untidy and does not move well, and getting the depth right matters as much as the look.
Some sealant jobs are within reach of a careful DIYer, like a short, easy-to-reach joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
Newtown: your questions answered
Do you cover smaller places like Newtown?
Yes, we do. Our work covers London and the South East, and smaller places are part of that. Longer journeys are simply planned in advance.
I let a flat near Hever station. Can you help?
Yes. We work for landlords and agents as well as householders, and several properties can be quoted together. You can ring 0345 464 0079 or send us an email with the details for a clear quote.
Do you have insurance?
Yes. We’re fully insured for domestic and commercial work.
Where are you based?
Our base is in Crawley, and we work across South East England, London and Scotland.
Can you do several jobs on one visit?
Yes. Just list everything you need and we will quote it together.
What do you put in the joint?
It depends on the joint: anti-fungal sanitary silicone in wet areas, and other sealants where joints move or face the weather. Brands we use include Arbo and Everbuild.
Do you work at height?
It depends on the building. We work on joints that can be reached safely. Give us some details and we will confirm the access.
Will there be a smell?
There can be a smell while the sealant cures, but it fades. Opening a window helps.
Quotes for external mastic in Newtown
For a quick quote, just ask. The main things that affect it are:
- The number and length of the joints
- Any mould that needs treating
- When we can work, for business premises
- The type of sealant required
A few things move the cost up or down: the old material and how easily it comes out, whether mould needs treating, and whether we need extra access for height. We take all of that into account in your quote.
Asking for a quote
When you call or email, it’s useful to know:
- The type of property
- Access, such as stairs, a lift or height
- Roughly how big the job is
- Photos by email, if that’s easy
There’s no standard price list, because every job is different. Instead, your job gets its own clear quote. To arrange one, ring 0345 464 0079 or email us.
How the job changes by surface
Cladding and façade panels
Panels heat up and cool down quickly, so the joint sealant has to cope with frequent movement. We choose the product to suit.
Concrete and blockwork
Big joints in concrete need careful depth control. We size the backing rod to the gap.
The process
Good joint work is mostly preparation, so that’s where we spend the time. Every joint is cleaned and dried before new material goes in. All told, the work takes a few hours to a few days, depending on the length of joint and the access. In a small place like Newtown, access is normally the main thing to plan. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- 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.
Getting ready for the visit
- Try not to wet indoor joints just before the visit
- Keep children and pets away from the work area
- Move anything stored near the joints
Get a quote
Quotes start with a quick conversation. Tell us what’s wrong, where it is and how much there is, and we will talk you through what we’d do. When it suits you, call 0345 464 0079 or email us.