Kent · England
Anvil Green External Mastic
Sealing brickwork movement joints, render, cladding and façade joints for homes and businesses in Anvil Green and across Kent. Fully insured, ARBOMaster approved and guaranteed for a year.
- Rigid filler in a joint that should flex
- Weathered mastic that no longer stretches
- Water getting into walls through failed joints
External mastic in Anvil Green
External mastic is a job where short cuts show quickly. New sealant over old, joints packed with mortar and beads with no backing rarely last long. We strip the joint back and start again. If you have brick movement joints where the sealant has split and leaking joints around cladding and façade panels, we can put it right.
Somewhere as small as Anvil Green, homes and farm buildings often face open ground, so walls and rooflines take the full force of wind and rain. Joints on those walls need a sealant that moves with the building and stays in place.
We stand behind the work with a one-year guarantee, so you’re not left on your own once the job is done.
- Location
- Anvil Green (CT4)
- Wider area
- Kent
- Guarantee
- One year on every job
- Price
- A clear quote up front
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
Your questions about external mastic in Anvil Green
Can you help a landlord with a rental near Chilham station?
Yes, rental work is part of what we do. Just ring 0345 464 0079 or drop us an email and tell us about the property, and we’ll give you a clear price.
Do you cover smaller places like Anvil Green?
Yes. Anvil Green is within the area we cover, which takes in towns, villages and rural addresses. Our work covers London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
What’s an expansion joint in brickwork?
Brickwork, render and cladding all move a little, and planned joints take up that movement. The gap is sealed with a flexible sealant over backing rod.
Where is Mr Mastic based?
We are a Crawley-based firm. Our area covers South East England, London and Scotland.
How often do external joints need resealing?
It depends on the exposure, the movement and the product. Treat it as a maintenance item and look at it yearly and reseal when it splits.
Do you use backing rod?
Backing rod controls the sealant depth and keeps it off the back of the joint. Then the sealant bonds to two faces and can move.
Is there any odour?
There can be a smell while the sealant cures. Ventilation helps.
Is it worth trying it myself?
That depends on the joint. Work at height, movement joints, fire-rated gaps and large areas are best left to a professional.
Aftercare tips
Once the sealant has cured, a few habits help it last:
- Make sure movement joints aren’t pointed over
- Point out the joints to other trades
- Keep soil, plants and ivy away from the joints
- Act on the first splits you see
Make sure anyone working on the wall later knows where the movement joints are. They must stay as flexible joints, never rendered or pointed over.
Leave a failed movement joint and water keeps getting into the wall. Over time it can mean damp inside, stained render or frost-damaged brick.
Anvil Green 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.
Letting a property close to Chilham station? Then split movement joints are easy to miss on a rental until damp shows inside.
Anvil Green is about 5 miles south-west of Wincheap, in Kent. Homes, rented property, offices and hotels in Anvil Green can book us for external mastic, old or new, large or small. Every job comes with our one-year guarantee. Anvil Green is one of 922 towns and villages in Kent where we work for external mastic. Chelmsford is on our list too, about 43 miles from Anvil Green.
Our applicators cover all of the CT4 postcode area for external mastic. Neighbouring places we cover for external mastic include Petham (2 miles north-east), Garlinge Green (2 miles north), Mystole (3 miles north), Upper Hardres (3 miles east) and Shalmsford Street (3 miles north). Within a short drive, we also cover Ashford (8 miles south-west), Canterbury (6 miles north-east), Dover (13 miles east), Sittingbourne (15 miles north-west), Folkestone (11 miles south-east) and Whitstable (10 miles north).
Landmarks near Anvil Green
In Anvil Green, that means homes and buildings near Compasses Inn and the streets around them. Anvil Green’s nearest station is Chilham station, roughly 3.1 miles north-west. Well-known places in the area include Chilham Castle (3.5 miles north-west) and Kent and Canterbury Hospital (5.1 miles north-east).
How it works
We bring everything the job needs with us, so you don’t need to buy or prepare anything. Once we’ve agreed what’s being done, we protect the area and start. Most jobs take anything from a few hours to several days, depending on the building. For a village or hamlet like Anvil Green, the journey is planned in advance: let us know about lanes, gates and parking. We bring what the job needs, so it can be finished in one trip where possible.
- We start by walking round the building and agreeing the joints and the access.
- We cut out the old mastic and rake out anything in the joint.
- The faces are brushed clean and primed where the product requires it.
- We fit closed-cell backing rod to control the depth.
- We apply the sealant, tool it and check the whole run.
How to prepare
- Mention any parking rules near the property
- On commercial sites, let us know about site rules
- Let us know about stairs, lifts or work at height
Get a quote
It all starts with a short chat. Describe the problem, the location and the size of the job. When it suits you, call 0345 464 0079 or drop us an email.
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Places near Anvil Green
More services for Anvil Green
DIY sealant or a professional job?
A careful DIYer can reseal a simple joint, such as a straightforward joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
What a professional job adds is preparation and the right product. Joints are cleaned back to sound surfaces and dried, and the sealant is chosen for how the joint moves and where it is.
Landlords, agents and businesses in Anvil Green
From a single let to a portfolio, the work is the same standard: the old material taken out, careful preparation and a 12-month guarantee.
If you manage several properties in or around Anvil Green, jobs at different addresses can be quoted together. Just tell us the addresses and what each one needs.
Do you need external mastic in Anvil Green?
Weeds, moss and debris in a joint are a sign the sealant has gone. Roots and dirt hold water against the wall.
The problems people normally mention when they call include:
- Hard, crazed mastic that has stopped moving
- Rain getting behind render or cladding at a joint
- Brick movement joints where the sealant has split
- Movement joints filled with mortar instead of sealant
In the older streets around Church of St Bartholomew, old and new materials meet at the roofline and walls, which is where sealant earns its keep.
Before you book anyone
- What preparation is included
- Who turns up on the day
- Is the old sealant removed completely?
- What the quote includes, VAT included or not
When it is not the sealant
Sealant isn’t the answer to every problem, and we will tell you before any work starts. It won’t solve:
- Damp from another source, such as a leaking gutter or a bridged damp-proof course
- Loose or hollow render, which needs re-rendering
- Walls that need new movement joints cut into them
If in doubt, call 0345 464 0079 or send us an email and we will say what we think.
Where we work in Anvil Green
- Brickwork movement joints
- Copings & trims
- Render & cladding joints
- Façade panels
- Concrete & block
- Joints between brick and frames
What happens if it’s left?
A low-modulus sealant is chosen because it moves without pulling hard at the edges. That protects surfaces like brick, render and concrete. Too stiff a sealant can pull at the edges and break them. In a small place like Anvil Green, homes can be exposed to wind and rain, which finds any gap, and older walls, once damp, take a long time to dry.
What you pay reflects the work, not guesswork. That is why we ask a few questions first and give you a clear quote before we start.
Why choose Mr Mastic in Anvil Green
- We’re fully insured
- Old sealant always removed completely
- An ARBOMaster approved applicator
- Anti-fungal silicone where joints get wet
Read what affects the cost or what customers say.