Kent · England
External & façade joints in Newtown, Kent
Sealing brickwork movement joints, render, cladding and façade joints for householders, landlords and businesses in Newtown. ARBOMaster approved applicators, fully insured, with a one-year guarantee.
- Cracked joints where brick meets render or frames
- Old sealant gone brittle and cracked
- Plants rooting in failed movement joints
How we handle external mastic in Newtown
Joints between dissimilar materials, like brick against render or concrete against a steel frame, see movement from both sides. A flexible sealant bridges the two. If you’re dealing with movement joints with cracked, split or missing sealant and rain getting behind render or cladding at a joint, we can help, whatever the surface.
In and around Newtown, older properties sit alongside newer ones, each with its own outside joints. Older homes need their gutter and trim joints kept tight, newer ones their movement joints.
All of our work is guaranteed for twelve months.
- Where
- Newtown (TN24, TN23)
- Region
- Kent
- Guarantee
- 12 months on all our work
- Quotes
- A clear quote up front
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
When something else is needed
Sealant isn’t the answer to every problem, and we’ll tell you before any work starts. It will not solve:
- Structural movement, which needs a surveyor or engineer
- Loose or hollow render, which needs re-rendering
- Damp from another source, such as a leaking gutter or a bridged damp-proof course
If you’re not sure, just ring 0345 464 0079 or send us an email and we’ll give you a straight answer.
What we seal
- Joints between brick and frames
- Concrete & block
- Brickwork movement joints
- Copings & trims
- Façade panels
- Render & cladding joints
Your questions about external mastic in Newtown
Do you cover smaller places like Newtown?
Yes, we do. Our work covers London and the South East, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.
Do you work for landlords with property near Ashford International station?
Yes, landlords and agents are among the people we work for, and several properties can go on one quote. Just call 0345 464 0079 or drop us an email with the address and what needs doing, and we will give you a clear price.
Is it worth trying it myself?
Some simple jobs can be done by a careful DIYer. The usual mistakes are sealing over old sealant, sealing a damp joint and using too much.
Do I have to be there?
It depends on the job. For work indoors, someone needs to let us in.
Will the old sealant be removed?
Yes. All of the old material is cut out and the joint cleaned.
Are you an approved applicator?
Yes. Mr Mastic is an ARBOMaster approved applicator, and we are fully insured.
Can a movement joint be filled with mortar?
No. Rigid materials can’t move with the wall and the joint fails. Where a joint has been mortared, it can often be raked out and sealed properly.
How long does the job take?
That depends on the amount of work, but as a guide it takes a few hours for a handful of joints, longer for a whole elevation. We’ll give you a better idea when we quote.
Newtown buildings and the weather
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 Godinton House (about 2.9 miles north-west) nearby, there’s older building stock in the area around Newtown as well as newer homes. Where a home is older, older walls and rooflines need a sealant that moves with them and suits the material.
Homes close to Christ Church include some older properties, and old and new materials meet at the roofline and walls, which is where sealant earns its keep. Schools such as East Stour 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 1 mile south-east of Ashford, in Kent. Homes, rented property, offices and hotels in Newtown is covered for external mastic. Every job comes with our 12-month guarantee. Across Kent, we cover 922 places, Newtown among them. Our Chelmsford page covers work nearby.
Postcode districts we cover here for external mastic: TN24 and TN23. Streets in the area include Bath Road, Mead Road and Royds Road. We also cover the places around Newtown: South Willesborough (1 mile north-east), Park Farm (1 mile south-west), Willesborough (1 mile north-east), Ashford (1 mile north-west) and Finberry (1 mile south-east). Further out, we also cover Canterbury (14 miles north-east), Folkestone (13 miles east), Faversham (13 miles north), Hythe (10 miles south-east), Davington (13 miles north) and Preston (12 miles north).
Near you in Newtown
We work in homes and buildings around The North School, The Albion Inn and Ashford Green Corridors, among other places. Newtown’s nearest station is Ashford International station, roughly 0.9 miles north. Well-known places in the area include Ashford Designer Outlet (0.5 miles north) and William Harvey Hospital (1.7 miles north-east). Not far away are Hatch Park.
The process
You do not need to clear the whole room or building, just the space around the work. Everything nearby is protected, and the work takes a few hours to a few days, depending on the length of joint and the access for a typical job. A visit to Newtown is planned like any other: the time, the access and where to park are agreed in advance. Outdoor jobs depend on a dry day, since sealant needs a dry surface.
- First, the joints are inspected and the access agreed.
- Every bit of old sealant and any mortar or debris is cut out.
- Joint faces are cleaned back and primed if the sealant needs it.
- We fit closed-cell backing rod to control the depth.
- We apply the sealant, tool it and check the whole run.
Getting ready for the visit
- Plan for the work area to be out of bounds to pets and children
- For business premises, tell us about site rules or sign-in
- Tell us about any water getting in
Getting a quote
The more we know about the job, the more useful the quote. Let us know the location, the problem and roughly how many joints, and email pictures if that is easy.
Related advice
DIY versus a professional finish
The biggest DIY mistake is sealing over old sealant. New silicone won’t bond to old, so it lifts and traps water and mould underneath. All the old material has to come out first.
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.
Keeping the joints in good condition
Good habits help new joints last longer. A few tips:
- Check external joints each spring
- Point out the joints to other trades
- Act on the first splits you see
- Wash walls gently around the sealant
Avoid pressure-washing straight into the joints. High-pressure water can lift the edges and let water in behind.
Once a joint cannot move, the wall finds another way, normally as cracking in the brickwork or render nearby. Resealing it early helps prevent that.
How the job changes by surface
Cladding and façade panels
Cladding and façade panels are normally separated by sealed joints. We reseal them with a sealant suited to the panel material.
Concrete and blockwork
Big joints in concrete need careful depth control. We size the backing rod to the gap and keep the sealant to the right depth.
Leave it or put it right?
A properly done movement joint is an even line in a colour that suits the wall. A rushed bead with no backing looks untidy and doesn’t last so it’s worth doing right. Around Newtown, water from a failed joint in an older home can soak into timber and plaster, and that’s a much bigger job than renewing the sealant.
Every job is a little different, so we quote each one individually. Size, access and the product the joint needs all make a difference, and we’ll explain the quote if you ask.
What you get with us
- A 12-month guarantee on all work
- Neat joints and a tidy finish
- Colour picked to suit the job
- White, clear, grey or coloured to suit, where the product allows
Signs you need external mastic in Newtown
Poor preparation causes many early failures: joint faces that were dusty or damp, unprimed where they needed it, or still carrying old sealant. The sealant never bonds properly.
If you can see any of these, it’s time to have the joints looked at:
- Sealant that has lost its bond to the brick or render
- Rain getting behind render or cladding at a joint
- Weeds or debris growing in open joints
- Rigid filler in a joint that should flex
For landlords with property near Ashford International station, outside joints that have cracked can let damp into a rental, so check them between lets.
What to look for in a quote
- Whether they seal over old material or remove it
- How the surfaces are prepared before sealing
- How the colour is chosen
- What guarantee comes with the work