West Sussex · England
Horsemere Green External Mastic
Sealing brickwork movement joints, render, cladding and façade joints for householders, landlords and businesses in Horsemere Green. Fully insured, ARBOMaster approved and guaranteed for a year.
- Joints pointed up with cement by mistake
- Sealant pulling away from one side of the joint
- Weathered mastic that no longer stretches
What happens if it’s left?
Water gets in through a failed movement joint. Resealing early keeps the job to the joint itself, rather than the wall around it. Around Horsemere Green, older homes often have timber in their floors and frames, and water through a failed joint can rot timber if it’s left.
A few things move the cost up or down: the old material and how easily it comes out, whether mould needs treating, and whether the work is at height. We take all of that into account in your quote.
Why choose Mr Mastic in Horsemere Green
- A 12-month guarantee on all work
- Any old sealant cut out fully, not covered over
- 20+ years of sealant experience
- Quality sealants from Arbo and Everbuild
See what affects the cost and customer reviews.
External mastic in Horsemere Green, done properly
Ground-floor and low-level joints are straightforward to reach. For joints higher up, give us some details of the building and we’ll confirm what access is needed. If you have sealant pulling away from one side of the joint and rigid filler in a joint that should flex, we can put it right, whatever the surface.
Around Horsemere Green, older buildings can be stone, brick or timber-framed, many with extensions added later. Where one material meets another is where water normally gets in.
Every job is covered by our one-year guarantee, wherever you are in West Sussex.
- Location
- Horsemere Green (BN17)
- Region
- West Sussex
- Cover
- One year on every job
- Price
- A clear price before we start
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
Places near Horsemere Green
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What we do, step by step
On the day, we look over the joints with you first. Surfaces next to the work are protected before any work begins. The work generally takes a few hours for a handful of joints, longer for a whole elevation. Somewhere like Horsemere Green needs a little journey planning: tell us about narrow lanes, gates, long drives and where we can park. We bring what the job needs, so it can be finished in one trip where possible.
- We look at every joint and agree a colour to suit the wall.
- We take out the old sealant until the faces are sound.
- Closed-cell backing rod is pushed in so the sealant bonds to two sides only.
- Primer is applied wherever the sealant needs it.
- We gun in low-modulus sealant and tool it neatly.
How to prepare
- Let us know if you’ve seen damp or leaks
- On commercial sites, let us know about site rules
- For indoor joints, keep the area dry beforehand if you can
Ask for a quote
If you’re in Horsemere Green and need external mastic, ring 0345 464 0079 or send us an email. A short description of the job and where it is helps us quote, and you will get a clear quote before we start.
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FAQs for Horsemere Green
I let a flat near Ford station. Can you help?
Yes. We work for landlords and letting agents as well as householders. Just call 0345 464 0079 or drop us an email with the address and what needs doing, and we will send you a clear quote.
Is Horsemere Green within the area you cover?
Yes. Horsemere 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.
Do you guarantee your work?
Yes, for a year. If there’s a problem with our work in that time, tell us and we will put it right.
Are you ARBOMaster approved?
Yes. We are ARBOMaster approved, the scheme for applicators of Arbo sealants.
Do you have insurance?
Yes. Full insurance covers our work, and we can confirm the details when we quote.
How long before the joint can be used?
That depends on the sealant used, so follow the cure time we give you.
What should I tell you?
A short description and the location. If we need more, we’ll ask.
Do you remove the old sealant?
Yes. All of the old material is cut out and the joint cleaned.
DIY sealant or a professional job?
The difference is mostly in the preparation and the product. We take joints back to clean, dry surfaces, and the sealant is chosen for how the joint moves and where it is, then guaranteed for a year.
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.
Landlords, agents and businesses in Horsemere Green
Letting agents often deal with us directly. Tell us the address, the job and how access works and we will give you a quote.
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.
What external mastic looks like in Horsemere Green
Horsemere Green is within about 1 mile of the coast, and homes near the sea take more wind-driven rain, with salt in the air closer to the shore. That is hard on movement joints and outside wall joints, especially on the side facing the sea. Compared with the north and west, the South East gets less rain, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
If you look after a building such as St Mary's CofE Primary School, movement joints, cladding joints and gutters on larger buildings need the same care as a house’s. For an older house near a landmark such as The Parish Church of St Mary, old and new materials meet at the roofline and walls, which is where sealant earns its keep.
Horsemere Green is about 2 miles west of Littlehampton, in West Sussex. Anywhere in BN17, we cover external mastic for homes and businesses. 371 places in West Sussex are on our list. There’s also a page for Brighton, about 20 miles away.
Every address in BN17 is within our area for external mastic. If you need external mastic at a property on Langford Close, Horsemere Green Lane and Apple Tree Walk or a nearby road, we can help. Neighbouring places we cover for external mastic include Climping (1 mile east), Atherington (1 mile south-east), Ford (1 mile north), Tortington (2 miles north) and Wick (2 miles north-east). Further out, we also cover Worthing (8 miles east), Bognor Regis (5 miles west), Chichester (9 miles west), Selsey (10 miles south-west), Shoreham-by-Sea (14 miles east) and Lancing (12 miles east).
Around Horsemere Green
Locally, jobs take us to homes and businesses close to The Black Horse Public House and The Littlehampton Academy, among other places. The closest station to Horsemere Green is Ford station, about 1.3 miles north of the centre. Well-known places in the area include Arundel Castle (3.4 miles north-east) and Arundel and District Hospital (3.1 miles north). Green spaces nearby include WWT Arundel.
Quotes for external mastic in Horsemere Green
We do not publish a price list. The quote depends on:
- Working hours on commercial sites
- Whether the work is at height
- The old material and how stubborn it is
- The number and length of the joints
There are no prices on our website, because each job is priced on what it involves. Call for a quick quote.
Helping us quote
To help us quote quickly, let us know:
- The problem you’ve noticed
- Photos by email, if that is easy
- Where the property is
- If someone has resealed it before
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, call 0345 464 0079 or send us an email.
Looking after it afterwards
Looking after new joints is easy:
- Deal with leaking gutters that soak the joints below
- Ask before painting over external sealant
- Never let anyone fill a movement joint with mortar
- Show decorators and builders where the movement joints are
Have a quick look at the joints each spring. Splits, gaps at the edges or plants in the joint are early warning signs.
Water getting behind cladding or render can go unnoticed for a long time. When it finally shows inside, the joint may have been open for years.
When to call us in Horsemere Green
The wrong product in a moving joint is a classic cause. A stiff, general-purpose sealant cannot cope with a joint that moves a lot, and it tears off the sides.
Most people get in touch when they notice something like this:
- Panel joints letting water in
- Weeds or debris growing in open joints
- Movement joints with cracked, split or missing sealant
- Cracked joints where brick meets render or frames
Letting a property close to Ford station? Then split movement joints are easy to miss on a rental until damp shows inside.
What your quote should include
- Whether all the old sealant comes out first
- Whether you can choose the colour
- Whether they’re fully insured
- What preparation is included