Kent · England
External & façade joints in Clap Hill, Kent
Movement joints in Clap Hill need attention? We cut out the old, prepare the joints and apply the right sealant, and the work is guaranteed for a year.
- Movement joints with cracked, split or missing sealant
- Weathered mastic that no longer stretches
- Moss and dirt in joints with no sealant left
How we handle external mastic in Clap Hill
Getting the depth right is half the job. Backing rod controls how deep the sealant goes and keeps it off the back of the joint, so it bonds to the two sides only and can stretch. If you are dealing with rain getting behind render or cladding at a joint and moss and dirt in joints with no sealant left, we can put it right, on brickwork movement joints, joints between brick and frames and copings & trims alike.
Outside joints can only be sealed when they’re dry, so work in Clap Hill is booked around the forecast. Tell us about access to all sides of the building, including outbuildings and garages.
Every job comes with our one-year guarantee, wherever you are in Kent.
- Place
- Clap Hill (TN25)
- Region
- Kent
- Cover
- 12 months on all our work
- Quote
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
Why it’s worth doing now in Clap Hill
Done well, a resealed joint is a neat, straight line that suits the wall. A rushed bead with no backing looks untidy and does not last, so it pays to do it properly once. Around Clap Hill, older homes often have timber in their floors and frames, and water through a failed joint can rot timber if it’s left.
Instead of a standard rate, we look at what your job involves: the amount of work, the old material and the access. The price is agreed before we begin.
Why choose Mr Mastic in Clap Hill
- Approved under the ARBOMaster scheme
- 4.9 on Google from 180+ five-star reviews
- We agree the colour with you first
- Quality sealants from Arbo and Everbuild
Take a look at how sealant jobs are priced or our reviews.
Keeping the joints in good condition
A little care helps the new joints last. We recommend:
- Tell anyone working on the walls about the movement joints
- Have failed joints looked at early
- Keep soil, plants and ivy away from the joints
- Leave the joints unpainted unless we have said otherwise
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.
Gaps, plants or missing sealant in a joint are worth getting looked at. Earlier resealing means a smaller job and a better result.
Work for landlords, hotels and businesses
Water getting past a failed joint can damage the building, which is a bigger problem in a rented property. Resealing at the right time is simple maintenance.
Housing providers, facilities teams and property managers book us too. Several sites can go on one quote.
Your questions about external mastic in Clap Hill
Will you come out to Clap Hill?
Yes, smaller places are covered as well as towns. We work across London and the South East. Just mention lanes, gates or anything else about the route when you book.
Can you do external mastic in Clap Hill?
Yes, Clap Hill is within the area we cover. Our work covers London and the South East. Just phone 0345 464 0079 or send us an email with a few details of the job, and we will give you a clear price.
Do you hold any approvals?
Yes. We are approved under the ARBOMaster scheme, the approved applicator scheme for Arbo sealants.
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.
Will the old sealant be removed?
Yes, always, and completely. New silicone does not stick to old silicone, so any old material comes out before anything new goes in.
Do you seal joints where cladding meets other materials?
Yes. Materials like render, brick, metal and uPVC all move differently, so a flexible sealant is needed where they meet. We choose one that suits both surfaces.
Why is there a gap in my brick wall?
A movement joint is a planned break in the wall that absorbs expansion and shrinkage. It’s sealed with a flexible sealant, not mortar.
Should I point up the gap in my brickwork?
No. Cement or mortar can’t stretch and the joint fails. Where a joint has been mortared, it can often be raked out and sealed properly.
Different surfaces, different methods
Concrete and blockwork
Wide joints in concrete need the depth controlling carefully. Backing rod sized to the joint sets it.
Brickwork movement joints
People sometimes point up a brick movement joint by mistake. If that is happened, we rake it out and reseal it properly.
Walls and rooflines in Clap Hill
Compared with the north and west, the South East gets less rain, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast. Historic houses like Westenhanger Castle (about 4.1 miles east) are a reminder that the area around Clap Hill 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.
If you let a flat or house near Ham Street station, outside joints that have cracked can let damp into a rental, so check them between lets. Westenhanger Castle, about 4.1 miles east, is one of the historic houses in the wider area around Clap Hill, and older homes nearby need a sealant that suits their walls. Schools such as Aldington Primary School are buildings too, and its movement joints, gutters and trims need looking after like any other building’s.
Clap Hill is about 4 miles south-east of Ashford, in Kent. From the centre of Clap Hill to the outskirts, external mastic is available for homes and businesses alike, from flats and houses to offices and hotels. Across Kent, we cover 922 places, and Clap Hill is one of them. You can also see our page for Chelmsford, roughly 48 miles from Clap Hill.
Work in TN25 works the same way as everywhere else we cover. Neighbouring places we cover for external mastic include Aldington (1 mile south-east), Stonestreet Green (1 mile east), Bonnington (1 mile south-west), Aldington Frith (1 mile west) and Postling Green (1 mile south-east). Within a short drive, we also cover Ashford (4 miles north-west), Canterbury (14 miles north-east), Folkestone (10 miles east), Faversham (15 miles north), Hythe (6 miles east) and Preston (15 miles north).
Local landmarks in Clap Hill
Around Clap Hill, our work takes us to homes and buildings near Poulton Wood and Walnut Tree Inn, among other places. For rail, the closest station is Ham Street station, about 4.1 miles south-west of the centre. Other landmarks nearby include Lympne Castle (4.1 miles south-east) and William Harvey Hospital (3.3 miles north). Not far away are Hatch Park.
When something else is needed
A few problems are outside what sealant work can do:
- Render that is blown, hollow or coming away
- Subsidence or other structural problems
- Cutting new joints into brickwork, which is building work rather than sealant work
If you’re not sure, just ring 0345 464 0079 or drop us an email and we’ll give you a straight answer.
Joints and surfaces we work on
- Render & cladding joints
- Copings & trims
- Brickwork movement joints
- Façade panels
- Concrete & block
- Joints between brick and frames
Should I try it myself first?
A DIY attempt does not rule out a professional job. We remove it and do the joint properly, so just mention it when you contact us.
A careful DIYer can reseal a simple joint, like a short, easy-to-reach joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
How the visit works
On the day, there’s very little for you to do. Show us the job and we will take it from there. The job generally takes a few hours for a handful of joints, longer for a whole elevation. For a village or hamlet like Clap Hill, the journey is planned in advance: tell us about narrow lanes, gates, long drives and where we can park. Everything for the job comes with us, so a second trip is avoided where possible.
- First, the joints are inspected and the access agreed.
- We cut out the old mastic and rake out anything in the joint.
- 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.
Before we arrive
- On commercial sites, let us know about site rules
- Keep children and pets away from the work area
- Let us know if you’ve seen damp or leaks
Get a quote
Every job is quoted individually, so the first step is telling us about yours. Simply phone 0345 464 0079 or send us an email and describe the job.