Kent · England
External & façade joints in Westmarsh, Kent
External mastic in Westmarsh from a team with over 20 years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Weeds or debris growing in open joints
- Weathered mastic that no longer stretches
- Sealant that has lost its bond to the brick or render
External mastic in Westmarsh
As ARBOMaster approved applicators, we choose exterior sealants to suit the joint and the surfaces. Porous or awkward surfaces are primed where the sealant needs it. We work on copings & trims, brickwork movement joints and concrete & block, and people most often call us about panel joints letting water in and failed seals between different materials.
Older homes in small places like Westmarsh may be stone, brick or timber-framed, often with later extensions. The joints where those materials meet are the weak points.
A 12-month guarantee comes as standard, so you are covered after we have gone.
- Place
- Westmarsh (CT3)
- Region
- Kent
- Cover
- A year, on every job
- Quote
- A clear quote up front
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
Why deal with it now?
The longer a joint stays open, the more water the wall takes in. Wet masonry is more easily damaged by frost, so the damage spreads beyond the joint. Where a wall is exposed, as many are in small places like Westmarsh, wind-driven rain gets into any failed joint, and damp in older walls is slow to dry out.
A failed joint rarely gets cheaper to fix by waiting. If you are unsure, call 0345 464 0079 or send us an email and we’ll give you an honest view and a quote.
What you get with us
- Approved under the ARBOMaster scheme
- 20+ years of sealant experience
- A sealant colour to suit the surroundings
- Full insurance on every job
Take a look at what affects the cost and our reviews.
The process
We keep the work tidy and contained to the area we’re working on. The job normally takes anything from a few hours to several days, depending on the building, and we tell you how long to leave it before we go. In a small place like Westmarsh, access is usually the main thing to plan. For outside work, also let us know about exposed walls and any outbuildings involved.
- First we look over the joints with you, agree which to renew and talk through access.
- The old mastic and anything lodged in the joint is removed.
- Both sides are cleaned back to sound material and primed if needed.
- We push in closed-cell backing rod so the sealant is the right depth and bonds to the sides only.
- We gun in a flexible exterior sealant in a colour that suits the wall and tool it neatly.
Preparing for the visit
- For indoor joints, keep the area dry beforehand if you can
- Let us know about stairs, lifts or work at height
- Mention any leaks or damp you’ve noticed
Get 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 add photos by email if you can.
Advice
Westmarsh questions
Is Westmarsh in your area for external mastic?
Yes, Westmarsh is within the area we cover. We work across London and the South East. You can ring 0345 464 0079 or email us and tell us what needs doing.
Do you cover smaller places like Westmarsh?
Yes, smaller places are covered as well as towns. Our work covers London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Will the old sealant be removed?
Yes. All of the old material is cut out and the joint cleaned before resealing.
Can I add another job to the visit?
Yes, we can. More than one area can go on one quote.
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.
Can I do it myself?
That depends on the joint. Work at height, movement joints, fire-rated gaps and large areas are best left to a professional.
Do you work at height?
That depends on the building and the joints. We work on joints that can be reached safely. Tell us about the building and we’ll confirm what access is needed.
Is there a guarantee?
Yes: twelve months. If anything is not right with the work within the year, let us know and we will sort it.
What external mastic looks like in Westmarsh
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 Goodnestone Park (about 4.6 miles south-west) are a reminder that the area around Westmarsh has older buildings as well as new. Where a home is older, older walls and rooflines need a sealant that moves with them and suits the material.
For landlords with property near Minster station, split movement joints are easy to miss on a rental until damp shows inside.
Westmarsh is about 7 miles west of Ramsgate, in Kent. If you need external mastic in Westmarsh, please ring 0345 464 0079 or drop us an email for a quick quote. We’re based in Crawley and cover Kent. Westmarsh is one of 922 places in Kent we cover. You can also see our page for Chelmsford, roughly 45 miles from Westmarsh.
We cover every part of the CT3 postcode area for external mastic. We also cover Ware (1 mile south), East Stourmouth (1 mile north-west), West Stourmouth (2 miles north-west), Preston (2 miles west) and Monkton (2 miles north). Larger places within reach include Canterbury (8 miles west), Margate (7 miles north-east), Dover (12 miles south), Ramsgate (7 miles east), Broadstairs (8 miles north-east) and Whitstable (11 miles west).
Around Westmarsh
Typical jobs here are in homes near The Way Out Inn, among other places. The closest station to Westmarsh is Minster station, about 2.6 miles north-east. Well-known places in the area include White Mill (3 miles south-east). The countryside around Westmarsh includes Monk's Wall nature reserve.
Can I do it myself?
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. We take joints back to clean, dry surfaces, and the sealant is matched to the joint and its conditions, then guaranteed for a year.
Landlords, agents and businesses in Westmarsh
We also work for property managers and facilities teams. Several sites can go on one quote.
We regularly work with letting and managing agents. Tell us the address, the job and how access works and we will quote.
How the job changes by surface
Concrete and blockwork
Wide joints in concrete need the depth controlling carefully. We size the backing rod to the gap so the sealant isn’t too deep.
Render joints
Water behind render can lead to blown patches. A sound joint keeps the render dry behind and protects the render itself.
Nearby places to Westmarsh
Also in Westmarsh
When something else is needed
A few problems are outside what sealant work can do:
- Cracks in the bricks or render themselves, away from the joints
- Cutting new joints into brickwork, which is building work rather than sealant work
- Failed render or damaged cladding panels
If in doubt, phone 0345 464 0079 or send us an email and we will say what we think before booking.
What we seal
- Façade panels
- Copings & trims
- Render & cladding joints
- Brickwork movement joints
- Concrete & block
- Joints between brick and frames
Common problems we fix in Westmarsh
A lot of failed joints come down to preparation: joint faces that were dusty or damp, unprimed where they needed it, or still carrying old sealant. The new sealant then lets go long before it should.
It’s worth asking for a quote if you see:
- Gaps where render, brick and frames meet
- Weathered mastic that no longer stretches
- Movement joints with cracked, split or missing sealant
- Movement joints filled with mortar instead of sealant
Goodnestone Park, about 4.6 miles south-west, is one of the historic houses in the wider area around Westmarsh, and older homes nearby need a sealant that suits their walls.
Questions to ask before booking
- How much experience the applicator has
- What happens if they find a problem under the old sealant
- How the colour is chosen
- Whether the sealant suits the joint