Kent · England
External & façade joints in Newbury, Kent
External mastic across Newbury and nearby, with old sealant always removed completely and a 12-month guarantee.
- Joints where the bead has come unstuck
- Panel joints letting water in
- Weeds or debris growing in open joints
How we handle external mastic in Newbury
Getting the depth right is half the job. Closed-cell backing rod sets the depth and stops the sealant sticking to the back, leaving it bonded to two faces so it can move with the wall. We work on façade panels, render & cladding joints and joints between brick and frames, and the jobs we see most are water getting into walls through failed joints and joints pointed up with cement by mistake.
Outside joints can only be sealed when they’re dry, so work in Newbury is booked around the forecast. Tell us about access to all sides of the building, including outbuildings and garages.
We stand behind the work with a 12-month guarantee.
- Location
- Newbury (ME9)
- Region
- Kent
- Cover
- A year, on every job
- Quote
- A clear price before we start
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
What external mastic looks like in Newbury
Historic houses like Belmont House and Gardens (about 4.3 miles south-east) are a reminder that the area around Newbury 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. The South East is one of the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
Schools such as Rodmersham School are buildings too, and its movement joints, gutters and trims need looking after like any other building’s. Homes close to Church of St Catherine include some older properties, and the joints between older walls, newer extensions and the roofline need a sealant that can move.
Newbury is about 3 miles south-east of Sittingbourne, in Kent. For external mastic in and around Newbury, please ring 0345 464 0079 or email us for a quick quote. We cover Kent from our Crawley base, Newbury included. We cover 922 towns and villages across Kent, large and small. For nearby work, see our Chelmsford page (32 miles or so).
Work in ME9 works the same way as everywhere else we cover. Close by, we work in Kingsdown (1 mile south), Dungate (1 mile south-west), Bapchild (1 mile north), Erriottwood (1 mile south-east) and Rodmersham Green (1 mile north-west). Within a short drive, we also cover Maidstone (11 miles west), Ashford (12 miles south), Canterbury (14 miles east), Sittingbourne (3 miles north-west), Whitstable (12 miles east) and Faversham (5 miles east).
Landmarks near Newbury
Around Newbury, our work takes us to homes and buildings near Cromers Wood and The Sittingbourne School and the streets around them. The nearest railway station is Teynham station, about 2.7 miles north-east. Well-known places in the area include Sittingbourne Heritage Museum (2.4 miles north) and Newnham Castle (2.1 miles south-east).
What happens on the day
On the day, we look over the joints with you first. We protect the surfaces around the joints before any work begins. Most jobs take a few hours for a handful of joints, longer for a whole elevation. Somewhere like Newbury needs a little journey planning: let us know about lanes, gates and parking. Everything for the job comes with us, so a second trip is avoided where possible.
- 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.
- Joint faces are cleaned back and primed if the sealant needs it.
- Backing rod sized to the joint goes in to set the depth.
- The exterior sealant is applied, tooled and checked along its length.
Preparing for the visit
- Where the joints are inside, avoid wetting them before we arrive
- Mention any parking rules near the property
- Let us know if you’ve seen damp or leaks
How to get a quote
Getting a quote is simple: let us know the job and the location. Photos by email help us understand the job, and we’ll come back to you with a quote.
Advice
When something else is needed
We’d rather tell you now than do work that won’t last, so these are the limits:
- Structural movement, which needs a surveyor or engineer
- Cracked brickwork or render that needs a builder or plasterer
- Damp from another source, such as a leaking gutter or a bridged damp-proof course
If in doubt, call 0345 464 0079 or send us an email and we will say what we think.
Where we work in Newbury
- Joints between brick and frames
- Concrete & block
- Façade panels
- Brickwork movement joints
- Copings & trims
- Render & cladding joints
Different surfaces, different methods
Concrete and blockwork
Big joints in concrete need careful depth control. We size the backing rod to the gap.
Brickwork movement joints
Vertical joints in long brick walls let the brickwork expand without cracking. We reseal them with a low-modulus sealant over backing rod.
FAQs for Newbury
Is Newbury in your area for external mastic?
Yes, Newbury is within the area we cover. We work across London and the South East. You can phone 0345 464 0079 or send us an email and let us know what needs doing.
Do you cover smaller places like Newbury?
Yes, Newbury is covered. 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.
Is there any odour?
Some sealants have a smell while they cure, which fades as it sets. Opening a window helps.
What do you put in the joint?
Quality sealants from brands including Arbo and Everbuild, picked for each joint. We explain the product when we quote.
How long does external mastic take?
A typical job takes a few hours to a few days, depending on the length of joint and the access, including the preparation. Your quote will say how long we expect yours to take.
What information do you need?
A short description and the location, plus pictures if you have them. If we need more, we will ask.
Are you ARBOMaster approved?
Yes. We’re approved under the ARBOMaster scheme, the approved applicator scheme for Arbo sealants.
Can tenants book the work?
Of course. Check with your landlord; we can send the quote to them too.
Common problems we fix in Newbury
Using the wrong sealant is another common reason. A stiff, general-purpose sealant can’t cope with a joint that moves a lot, and it tears off the sides.
It’s worth asking for a quote if you see:
- Moss and dirt in joints with no sealant left
- Gaps where render, brick and frames meet
- Sealant pulling away from one side of the joint
- Joints pointed up with cement by mistake
Rented homes near Teynham station change hands often, and outside joints that have cracked can let damp into a rental, so check them between lets.
Comparing quotes
- Are they insured?
- How the colour is chosen
- When the joint can take water or movement
- How the joint is cleaned and prepared
DIY sealant or a professional job?
Too much sealant is as bad as too little. A heavy bead looks messy and copes badly with movement, and the joint depth matters as much as the finish.
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.
Places near Newbury
More services for Newbury
How we quote for external mastic
Jobs vary more than people expect. The main factors:
- The type of sealant required
- The size of the job
- The old material and how stubborn it is
- Whether there’s mould to deal with
A few things move the cost up or down: how much old sealant there is and how stubborn it is, 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
To help us quote quickly, let us know:
- If it’s domestic, commercial or a hotel
- Any previous sealing or DIY work
- How we’d reach the joints
- The rough size of the job
We don’t publish a price list, because every job is different. Instead, we send you a clear quote for your job. To get started, call 0345 464 0079 or email us.
How to look after the new joints
How long the joints last depends on use and care. We suggest:
- Look over the joints every year, ideally after winter
- Avoid pressure-washing directly into sealant joints
- Keep water from gutters off the wall
- Keep movement joints as flexible joints, not mortar
Only paint over the joint if we have confirmed the sealant can take paint. Paint can crack on a flexible joint, and paint can crack as the joint moves.
Gaps, plants or missing sealant in a joint are worth getting looked at. Early work is quicker and leaves a better finish.