Kent · England
Four Throws External Mastic
Our applicators work in Four Throws on sealing brickwork movement joints, render, cladding and façade joints. Old material cut out, joints cleaned and sealed neatly and every job guaranteed for a year.
- Sealant pulling away from one side of the joint
- Damp patches traced to an open external joint
- Brick movement joints where the sealant has split
External mastic in Four Throws, done properly
We cut out failed sealant, set the joint depth with closed-cell backing rod and reseal with a low-modulus exterior sealant. The colour is chosen to suit the brick or render so the joint doesn’t stand out. If you have hard, crazed mastic that has stopped moving and movement joints with cracked, split or missing sealant, we can help.
Around Four Throws, older buildings can be stone, brick or timber-framed, many with extensions added later. Where one material meets another is where water usually gets in, and they need the right sealant at the right depth.
All of our work is guaranteed for twelve months, and the guarantee is the same wherever you are.
- Where
- Four Throws (TN18)
- Wider area
- Kent
- Cover
- A year, on every job
- Quote
- Quoted before any work starts
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
DIY sealant or a professional job?
A DIY attempt doesn’t rule out a professional job. We remove it and do the joint properly.
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, and the work is guaranteed for a year.
Places near Four Throws
More services for Four Throws
Four Throws buildings and the weather
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 Great Dixter (about 3.9 miles south-east) are a reminder that the area around Four Throws has older buildings as well as new. In older buildings, older brick and stone need a sealant that suits them, at the right joint depth.
Managing a site like Hawkhurst Church of England Primary School? Then movement joints, cladding joints and gutters on larger buildings need the same care as a house’s. If you let a flat or house near Etchingham station, outside joints that have cracked can let damp into a rental, so check them between lets.
Four Throws is about 12 miles north of Hastings, in Kent. Jobs in Four Throws get the same care as everywhere else we work: old sealant removed completely, careful preparation and a 12-month guarantee. Across Kent, we cover 922 places, Four Throws among them. Crawley is on our list too, about 32 miles from Four Throws.
Every address in TN18 is covered for external mastic. Streets in the area include Rye Road, Foxhole Lane and Conghurst Lane, all of which we cover. Other places close to Four Throws include Little Conghurst (1 mile south-west), Pipsden (1 mile north-west), Hawkhurst (1 mile north-west), The Moor (1 mile west) and Sandhurst Cross (1 mile south-east). Larger places within reach include Royal Tunbridge Wells (13 miles north-west), Paddock Wood (11 miles north-west), Tenterden (7 miles east), Southborough (14 miles north-west), Park Wood (14 miles north) and Staplehurst (9 miles north).
Local landmarks in Four Throws
Locally, jobs take us to homes and businesses close to Oak And Ivy Public House and Collingwood Nature Reserve, among other places. Four Throws’s nearest station is Etchingham station, about 4.5 miles south-west. A little further out are Benenden Hospital (4.9 miles north-east).
What we are called out for in Four Throws
Sometimes a movement joint was filled with mortar or a rigid filler. The joint cannot move, so the wall cracks somewhere else instead.
Common reasons people contact us are:
- Weeds or debris growing in open joints
- Joints where the bead has come unstuck
- Cracked joints where brick meets render or frames
- Failed sealant between panels on a façade
Homes close to Church of All Saints include some older properties, and older walls, gutters and the joints where extensions meet them need a flexible sealant.
Questions to ask before you book
- Whether they’re fully insured
- How the surfaces are prepared before sealing
- Who does the work, and how experienced they are
- How the colour is chosen
Honest limits
Before booking, it’s worth knowing the limits:
- Damp from another source, such as a leaking gutter or a bridged damp-proof course
- Render that is blown, hollow or coming away
- Subsidence or other structural problems
If you’re not sure, just ring 0345 464 0079 or email us and we will give you a straight answer.
Where we work in Four Throws
- Brickwork movement joints
- Concrete & block
- Joints between brick and frames
- Render & cladding joints
- Façade panels
- Copings & trims
Why deal with it now?
Water gets in through a failed movement joint, behind render and cladding. Resealing early keeps the job to the joint itself, instead of the wall and finishes around it. Older cottages and farmhouses around Four Throws can have timber floors and frames, and water through a failed joint can rot timber if it’s left.
Combining jobs into one visit normally makes better use of the time than several visits, so it’s worth mentioning everything you’d like done. We’ll send you a clear quote for the lot.
Why book with us
- Quality sealants from Arbo and Everbuild
- Homes, businesses and hotels
- You choose the colour before work begins
- Any old sealant cut out fully, not covered over
See what affects the cost and customer reviews.
Common questions in Four Throws
I let a flat near Etchingham station. Can you help?
Yes. We work for landlords and agents as well as homeowners, and several properties can go on one quote. Just phone 0345 464 0079 or drop us an email with the address and what needs doing, and we will give you a clear quote.
Do you cover Four Throws for external mastic?
Yes, Four Throws is within the area we cover. We work across London and the South East. You can ring 0345 464 0079 or email us and let us know what needs doing, and we will give you a clear price.
Are you an approved applicator?
Yes. We’re an ARBOMaster approved applicator.
Will the old sealant be removed?
Always. Sealing over the old bead is the commonest cause of early failure, so we never do it.
Can a movement joint be filled with mortar?
No. Mortar locks the joint solid, so the movement cracks the wall elsewhere. It needs a flexible sealant over backing rod.
How much does external mastic cost in Four Throws?
There’s no set price, as it depends on the job: its size, the old material, access and the product needed. We agree the price before any work begins.
Do I need to be at home?
If the work is inside, we need someone to let us in. After that, you can carry on with your day.
Should I try DIY first?
You can, for simple jobs. The key is preparation: remove all the old material and work on a clean, dry joint. If it does not work out, we can redo it.
How the job changes by surface
Copings and trims
A failed coping joint lets water into the top of the wall. Sealing them early saves the wall below.
Joints between dissimilar materials
Where a frame or panel meets masonry, water often finds a way in. We cut out the old sealant and reseal with a product suited to both surfaces.
Work for landlords, hotels and businesses
Mouldy or split sealant often shows up at the end of a tenancy, and it’s easy to sort out between tenants. Several properties can be quoted together.
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.
What we do, step by step
A visit follows a simple pattern: we look at the joints together, mask and protect the surrounding surfaces, carry out the job and clear up. It normally takes a few hours for a handful of joints, longer for a whole elevation. Somewhere as small as Four Throws, access is often the only tricky part. For outside work, also let us know about exposed walls and any outbuildings involved.
- Each joint is checked and the colour of the new sealant agreed.
- Failed sealant is removed back to clean, sound faces.
- Closed-cell backing rod is pushed in so the sealant bonds to two sides only.
- Primer is applied wherever the sealant needs it.
- A low-modulus exterior sealant is gunned in and tooled to a neat finish.
Before we arrive
- Tell us about access, such as stairs, a lift or high-level joints
- Where the joints are inside, avoid wetting them before we arrive
- For business premises, tell us about site rules or sign-in
How to get a quote
There’s no standard price list, as no two jobs are quite the same. Instead, we give you a clear quote for your job. To get started, phone 0345 464 0079 or email us.