Kent · England
Finberry External Mastic
Sealing brickwork movement joints, render, cladding and façade joints for homes and businesses in Finberry and across Kent. ARBOMaster approved applicators, fully insured, with a one-year guarantee.
- Rain getting behind render or cladding at a joint
- Movement joints with cracked, split or missing sealant
- Sealant that has lost its bond to the brick or render
About our external mastic in Finberry
Joints in render and cladding are easy to overlook until a damp patch appears. We look over the joints, agree the ones to renew and reseal with a flexible, weatherproof product in a colour to suit. We work on concrete & block, render & cladding joints and façade panels, and people most often call us about brick movement joints where the sealant has split and water getting into walls through failed joints.
Somewhere as small as Finberry, 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.
All of our work is guaranteed for twelve months.
- Where
- Finberry (TN25)
- Region
- Kent
- Guarantee
- One year on every job
- Quotes
- A clear price before any work starts
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
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. Everything old must be removed first.
Not every job suits DIY: high-level joints, fire-rated gaps, external movement joints and big jobs call for the right materials, safe access and experience.
Towns and villages near Finberry
What else we do in Finberry
When to call us in Finberry
Some movement joints have been pointed up with mortar. With the joint locked solid, the movement turns into cracks elsewhere in the wall.
Signs it’s time to call us include:
- Moss and dirt in joints with no sealant left
- Joints pointed up with cement by mistake
- Sealant pulling away from one side of the joint
- Weathered mastic that no longer stretches
In the older streets around Church of St Mary, the joints between older walls, newer extensions and the roofline need a sealant that can move.
What to look for in a quote
- What insurance they hold
- Whether you can choose the colour
- What preparation is included
- What product goes in the joint
When it isn’t the sealant
Before you book, it’s worth knowing the limits:
- Cracks in the bricks or render themselves, away from the joints
- Damp from another source, such as a leaking gutter or a bridged damp-proof course
- Subsidence or other structural problems
If you are not sure, just ring 0345 464 0079 or send us an email and we will give you a straight answer before you book.
Surfaces we seal
- Joints between brick and frames
- Copings & trims
- Concrete & block
- Render & cladding joints
- Façade panels
- Brickwork movement joints
Why act early in Finberry
A failed movement joint lets water into the wall and can run behind render or cladding. Dealing with it early keeps the repair to the joint, rather than the wall around it. In a small place like Finberry, homes can be exposed to wind and rain, which finds any gap, and older walls, once damp, take a long time to dry.
Rather than a set price list, we price the job in front of us: how many joints, what’s in them now and how we reach them. The price is agreed before we begin.
Why Finberry clients choose us
- We leave the area clean and tidy
- 20+ years of sealant experience
- Every job guaranteed for a year
- 4.9 on Google from 180+ five-star reviews
Read what affects the cost or our reviews.
Surface by surface
Render joints
The face of render can be soft, so a sealant that stretches easily protects the edges. Priming is done where the sealant calls for it.
Joints between dissimilar materials
Where a frame or panel meets masonry, water often finds a way in. The old joint is removed and a sealant that bonds to both sides goes in.
What we do, step by step
We work through the job in order: protect, prepare, seal, tidy. Typically it takes a few hours to a few days, depending on the length of joint and the access. For a village or hamlet like Finberry, the journey is planned in advance: let us know about lanes, gates and parking. 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.
- We fit closed-cell backing rod to control the depth.
- The exterior sealant is applied, tooled and checked along its length.
How to prepare
- Mention any parking rules near the property
- For business premises, tell us about site rules or sign-in
- Tell us about access, such as stairs, a lift or high-level joints
Getting 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. Whenever you are ready, phone 0345 464 0079 or send us an email.
Related advice
What affects the quote in Finberry
The quote reflects the job in front of us. We look at:
- The amount of work
- The product the joint needs
- How many areas need sealing
- Whether the work is at height
What it costs depends on how much there is to do, how hard the old material is to remove and how easy the joints are to reach. We give a clear quote before any work starts.
What we need to know
When you contact us, it’s useful to know:
- A few pictures by email, if you can
- The address or postcode of the job
- Any access issues, like height or stairs
- The rough size of the job
There’s no standard price list, because every job is different. Instead, we give you a clear price for your job. To arrange one, phone 0345 464 0079 or email us.
Questions from Finberry
Can you help a landlord with a rental near Ashford International station?
Yes, landlords and agents are among the people we work for, and several properties can be quoted together. You can call 0345 464 0079 or drop us an email with the details for a clear quote.
Will you come out to Finberry?
Yes. Finberry is within the area we cover, which takes in towns, villages and rural addresses. We work across London and the South East. Just mention lanes, gates or anything else about the route when you book.
Should I point up the gap in my brickwork?
No. Mortar locks the joint solid, so the movement cracks the wall elsewhere. It needs a flexible sealant over backing rod.
What do you need from me for a quote?
The location, the problem and the rough size of the job. If you can, email a few photos.
Is it worth trying it myself?
Some simple jobs can be done by a careful DIYer. The usual mistakes are sealing over old sealant, sealing a damp joint and using too much.
Do you guarantee your work?
Yes, for a year. If there’s a problem with our work in that time, tell us and we’ll put it right.
Are you ARBOMaster approved?
Yes. ARBOMaster is the approved applicator scheme for Arbo sealants, and we’re part of it.
Will the old sealant be removed?
Yes, always, and completely. New sealant won’t bond properly to old, so any old material comes out before anything new goes in.
Finberry buildings and the weather
The South East is one of the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day. With historic houses such as Godinton House (about 4 miles north-west) nearby, there’s older building stock in the area around Finberry as well as newer homes. Where a home is older, older walls and rooflines need a sealant that moves with them and suits the material.
If you let a flat or house near Ashford International station, split movement joints are easy to miss on a rental until damp shows inside. If you look after a building such as Finberry Primary School, movement joints, cladding joints and gutters on larger buildings need the same care as a house’s.
Finberry is about 2 miles south-east of Ashford, in Kent. For external mastic in and around Finberry, please phone 0345 464 0079 or drop us an email for a quick quote. We are based in Crawley and cover Kent. Across Kent, we cover 922 places, and Finberry is one of them. For nearby work, see our Chelmsford page.
Jobs for external mastic in TN25 works the same way as everywhere else we cover. Local streets include Swift Avenue, Harrier Drive and Nuthatch Drive. Nearby, we also carry out external mastic in Cheeseman's Green (1 mile south), South Willesborough (1 mile north), Park Farm (1 mile west), Newtown (1 mile north-west) and Kingsnorth (1 mile west). Larger places within reach include Canterbury (14 miles north-east), Folkestone (12 miles east), Faversham (14 miles north), Hythe (9 miles east), Davington (14 miles north) and Preston (13 miles north).
What’s near Finberry
In Finberry, that means homes and buildings near Ashford Green Corridors and John Wallis Academy, among other places. The closest station to Finberry is Ashford International station, roughly 2 miles north-west. Other landmarks nearby include William Harvey Hospital (1.9 miles north-east) and Ashford Designer Outlet (1.5 miles north-west). Open spaces near Finberry include Hatch Park.