Kent · England
External Mastic in Ryarsh
External mastic for Ryarsh, by sealant specialists with 20+ years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Sealant that has lost its bond to the brick or render
- Panel joints letting water in
- Failed seals between different materials
External mastic in Ryarsh
Where two different materials meet, such as brick and render or blockwork and metal, they move at different rates. A flexible exterior sealant takes up that movement where a rigid filler would soon crack. We work on joints between brick and frames, brickwork movement joints and copings & trims, and the jobs we see most are weathered mastic that no longer stretches and damp patches traced to an open external joint.
Somewhere as small as Ryarsh, 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.
Each job carries a 12-month guarantee, whatever its size.
- Place
- Ryarsh (ME19)
- Region
- Kent
- Cover
- One year on every job
- Quote
- A clear quote up front
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
Keeping the joints in good condition
How long the joints last depends on use and care. We suggest:
- Never let anyone fill a movement joint with mortar
- Have failed joints looked at early
- Avoid pressure-washing directly into sealant joints
- Tell anyone working on the walls about the movement joints
Don’t paint over the new sealant unless we’ve said the product is paintable. 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. Earlier resealing means a smaller job and a better result.
What we are called out for in Ryarsh
Buildings move more than people expect. Brickwork grows a little over the years, blockwork and concrete shrink, and all of it moves with heat and moisture. All of that ends up in the joint sealant.
Common reasons people contact us are:
- Plants rooting in failed movement joints
- Damp patches traced to an open external joint
- Movement joints with cracked, split or missing sealant
- Weathered mastic that no longer stretches
For an older house near a landmark such as Church of St Martin, an extension built onto an older house moves differently, and the joint between them takes the strain.
Questions to ask before you book
- How hidden problems are handled
- When the joint can take water or movement
- Whether they’re fully insured
- Whether the sealant suits the joint
How the job changes by surface
Concrete and blockwork
Blockwork and concrete shrink over time and move with the seasons. We reseal their joints with backing rod and a flexible product.
Brickwork movement joints
Brick movement joints are often mistaken for a missing mortar line. Where one has been mortared, we cut it out and reseal it with sealant where it can be done safely.
When something else is needed
We will not take on work that won’t last, so these are the limits:
- Cracks in the bricks or render themselves, away from the joints
- Structural movement, which needs a surveyor or engineer
- Rising or penetrating damp from elsewhere in the wall
Not sure which it is? You can phone 0345 464 0079 or drop us an email and we’ll tell you honestly.
Where we work in Ryarsh
- Render & cladding joints
- Façade panels
- Concrete & block
- Brickwork movement joints
- Joints between brick and frames
- Copings & trims
For landlords and businesses
We regularly work with letting and managing agents. Send the address, what’s needed and the access arrangements and we will give you a quote.
A neglected joint can let water reach the structure, which matters even more when someone else lives there. Keeping joints in good order is simple maintenance that we can handle for you.
How it works
The work is kept neat and contained to the area we’re working on, so you can carry on as normal. The job generally takes a few hours for a handful of joints, longer for a whole elevation, and we tell you how long to leave it before we go. In a small place like Ryarsh, access is normally the main thing to plan. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- 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.
- We apply the sealant, tool it and check the whole run.
Getting ready for the visit
- Let us know about earlier repairs to the joints
- Clear items away from the joints we are working on
- Where the joints are inside, avoid wetting them before we arrive
Ask for a quote
It all starts with a short chat. Describe the problem, the location and the size of the job, and we’ll explain how we’d tackle it. When it suits you, call 0345 464 0079 or send us an email.
Advice
Walls and rooflines in Ryarsh
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. Historic houses like Starkey Castle (about 4.6 miles north-east) are a reminder that the area around Ryarsh 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.
For site and facilities teams at buildings such as Ryarsh Primary School, movement joints, cladding joints and gutters on larger buildings need the same care as a house’s. For landlords with property near West Malling station, outside joints that have cracked can let damp into a rental, so check them between lets.
Ryarsh is about 7 miles north-west of Maidstone, in Kent. From the centre of Ryarsh to the outskirts, we cover external mastic for every kind of property. Ryarsh is one of 922 towns and villages in Kent we cover for external mastic. There’s also a page for London, about 25 miles away.
Postcode districts we cover here for external mastic: ME19. That includes homes and businesses on The Street, Old School Lane and Brick Gardens and the roads around them. Other places close to Ryarsh include Addington (1 mile south-west), Trottiscliffe (2 miles west), Vigo Village (2 miles north-west), Harvel (3 miles north-west) and Culverstone Green (3 miles north-west). We also work in nearby towns such as Maidstone (7 miles south-east), Sittingbourne (15 miles east), Dartford (12 miles north-west), Sevenoaks (9 miles west), Royal Tunbridge Wells (13 miles south-west) and Gravesend (8 miles north).
Around Ryarsh
Around Ryarsh, our work takes us to homes and buildings near Leybourne Lakes Country Park, The Holmesdale School and The Duke Of Wellington Public House. The closest station to Ryarsh is West Malling station, about 1.7 miles south-east of the centre. Nearby you’ll also find Maidstone Hospital (4.7 miles south-east) and Coldrum Long Barrow (1.1 miles north-west). Green spaces nearby include Blue Bell Hill and Burham Down.
DIY sealant or a professional job?
Sealing over old silicone is the commonest DIY error. Silicone does not stick to old silicone, so it lifts and traps water and mould underneath. All the old material has to come out first.
The difference is mostly in the preparation and the product. We take joints back to clean, dry surfaces, and the sealant is matched to the joint and its conditions.
Towns and villages near Ryarsh
Other services in Ryarsh
Ryarsh questions
Do you cover smaller places like Ryarsh?
Yes, we do. We work across London and the South East, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.
Is Ryarsh in your area for external mastic?
Yes, Ryarsh is within the area we cover. We work across London and the South East. You can ring 0345 464 0079 or send us an email and tell us what needs doing, and we will give you a clear price.
Do you seal joints where cladding meets other materials?
Yes. Materials like render, brick, metal and uPVC all move differently, so the joint between them must be flexible. The sealant is matched to both sides.
Should I point up the gap in my brickwork?
No. Cement or mortar can’t stretch and the joint fails. If it has already been filled, we can usually cut it out and reseal it.
I’m a tenant. Can you help?
Of course. Check with your landlord; we can send the quote to them too.
Why do you put foam in the joint first?
Backing rod goes into deeper joints as a matter of course. It controls the depth and stops the sealant bonding to the back so the bead can stretch.
What’s an expansion joint in brickwork?
Most straight vertical gaps in brickwork are movement joints. It gives the wall room to move and needs a flexible seal, not mortar.
Do you have insurance?
Yes. Full insurance covers our work, and we can confirm the details when we quote.