West Sussex · England
External & façade joints in Broadbridge Heath, West Sussex
Sealing brickwork movement joints, render, cladding and façade joints for homes and businesses in Broadbridge Heath and across West Sussex. ARBOMaster approved applicators, fully insured, with a 12-month guarantee.
- Weeds or debris growing in open joints
- Panel joints letting water in
- Joints pointed up with cement by mistake
External mastic in Broadbridge Heath
A movement joint is a deliberate break that lets a wall expand and contract. Its sealant has to flex with the building, season after season, and when it fails, the wall takes the strain and water finds a way in. Common call-outs are for panel joints letting water in and gaps where render, brick and frames meet, across façade panels, brickwork movement joints and render & cladding joints.
Houses in smaller places like Broadbridge Heath can stand more in the open than those in a built-up town, so exposed walls and rooflines take more wind-driven rain. That’s where gutter joints and wall joints tend to fail first.
A 12-month guarantee comes as standard, so you’re not left on your own once the job is done.
- Place
- Broadbridge Heath (RH12)
- Region
- West Sussex
- Cover
- A year, on every job
- Quotes
- Quoted before any work starts
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
How the job changes by surface
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.
Brickwork movement joints
Vertical joints in long brick walls let the brickwork expand without cracking. We reseal them with a low-modulus sealant over backing rod coloured to suit the wall.
What affects the quote in Broadbridge Heath
Some jobs are bigger than they look, and some smaller. What affects the quote:
- How easy the joints are to reach
- When we can work, for business premises
- Whether there’s mould to deal with
- How much old sealant there is and how hard it is to remove
A few things move the cost up or down: how much old sealant there is and how stubborn it is, any mould to treat, and whether we need extra access for height. Your quote takes all of that into account.
What we need to know
Photos by email are helpful but not essential. Please mention:
- The problem you’ve noticed
- Any previous sealing or DIY work
- Roughly how big the job is
- Where the job is, and your postcode
We quote each job on its own, so start by telling us what you need. Just phone 0345 464 0079 or email us with the details and send pictures if you have them.
What external mastic looks like in Broadbridge Heath
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.
Homes close to St. John's Church include some older properties, and older walls, gutters and the joints where extensions meet them need a flexible sealant. Schools such as Shelley Primary School are buildings too, and its movement joints, gutters and trims need looking after like any other building’s. For landlords with property near Christs Hospital station, failed wall and movement joints let damp in, so they’re worth checking between tenancies.
Broadbridge Heath is about 2 miles west of Horsham, in West Sussex. From the centre of Broadbridge Heath to the outskirts, external mastic is available for homes and businesses alike. Broadbridge Heath is one of 371 places in West Sussex where we work. Our Crawley page covers work nearby (8 miles or so).
Every address in RH12 is covered for external mastic, from the main roads to the quietest streets. External mastic is available to properties on Church Road, Broadbridge Way and Sargent Way. Neighbouring places we cover for external mastic include Tower Hill (1 mile south-east), Warnham (2 miles north), Horsham (2 miles east), Itchingfield (2 miles south-west) and Rowhook (2 miles north-west). Larger places within reach include Crawley (8 miles east), Haywards Heath (13 miles east), Burgess Hill (13 miles south-east), Broadfield (7 miles east), Storrington (11 miles south) and Billingshurst (5 miles south-west).
What’s near Broadbridge Heath
We work in homes and buildings around Tanbridge House School, Farlington Strood Park and Shelley Arms and the streets around them. Broadbridge Heath’s nearest station is Christs Hospital station, about 1.2 miles south. Well-known places in the area include Horsham Hospital (1.7 miles east) and Christs Hospital School Museum (1.6 miles south). For a walk, there’s Warnham LNR.
Leave it or put it right?
Sealing over the top of old mastic doesn’t hold for long. New sealant doesn’t bond well to old, weathered sealant, so we always take the old sealant out. Around Broadbridge Heath, water from a failed joint in an older home can soak into timber and plaster, and that’s a much bigger job than renewing the sealant.
A failed joint rarely gets cheaper to fix by waiting. If you are not sure whether it needs doing, ring 0345 464 0079 or drop us an email for an honest opinion and a quote.
Why choose Mr Mastic in Broadbridge Heath
- Rated 4.9 stars on Google
- Anti-fungal silicone where joints get wet
- More than 20 years in sealant work
- Trusted Arbo and Everbuild sealants
Take a look at our cost guide and what customers say.
DIY sealant or a professional job?
Overfilling a joint is a classic DIY mistake. A thick, smeared bead looks untidy and doesn’t move well, and the joint depth matters as much as the finish.
Some sealant jobs are within reach of a careful DIYer, such as a straightforward joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
Also near Broadbridge Heath
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What sealant work cannot fix
In fairness, there are a few things sealant won’t fix:
- Subsidence or other structural problems
- Cutting new joints into brickwork, which is building work rather than sealant work
- Loose or hollow render, which needs re-rendering
Not sure which it is? You can call 0345 464 0079 or email us and we’ll tell you honestly before booking.
Where we work in Broadbridge Heath
- Concrete & block
- Joints between brick and frames
- Copings & trims
- Façade panels
- Render & cladding joints
- Brickwork movement joints
Aftercare tips
Looking after new joints is easy:
- Do not let climbing plants root in the sealant
- Check the sealant is paintable before painting near it
- Keep high-pressure jets off the joints
- Walk round the building once a year and look at the joints
Don’t paint over the new sealant unless we have said the product is paintable. Paint can crack on a flexible joint, and paint can crack as the joint moves.
Small splits are the time to act. Then it’s a straightforward cut-out and reseal before water has had years to get in.
What happens on the day
We work through the job in order: protection first, then preparation, sealing and a tidy-up. For most jobs that takes a few hours for a handful of joints, longer for a whole elevation and we leave things clean and tidy. For a job in Broadbridge Heath, we agree the time, the access and parking before the day. If the work is outside, the weather plays a part, as sealant needs a dry surface.
- We start by checking each joint, agreeing the ones to redo and how we will reach them.
- The old mastic and anything lodged in the joint is removed.
- The joint faces are cleaned and primed where the sealant needs it.
- We push in closed-cell backing rod so the sealant is the right depth and bonds to the sides only.
- A flexible exterior sealant is applied and tooled in a colour to suit the wall.
How to prepare
- Mention any leaks or damp you’ve noticed
- Mention any tricky access
- On commercial sites, let us know about site rules
Ask for a quote
To get a quote, ring 0345 464 0079 or email us and tell us where the job is and what the problem looks like. We will give you a clear price before any work starts.
Advice
Broadbridge Heath questions
Is Broadbridge Heath within the area you cover?
Yes, smaller places are covered as well as towns. We work across London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Is Broadbridge Heath in your area for external mastic?
Yes. We work across London and the South East, and Broadbridge Heath is part of that. You can ring 0345 464 0079 or email us and tell us what needs doing.
Do you guarantee your work?
Yes. Every job comes with our 12-month guarantee.
Are you an approved applicator?
Yes. ARBOMaster is the approved applicator scheme for Arbo sealants, and we are part of it.
Do you work for landlords and businesses?
Yes, we do. We work in homes, commercial premises and hotels, and we are fully insured.
Why is there a gap in my brick wall?
A vertical gap in a long brick wall is generally a movement joint. It lets the bricks expand without cracking and needs a flexible seal, not mortar.
Do you remove the old sealant?
Yes, every time. New sealant won’t bond properly to old, so the joint is cleaned back first.
What do you put in the joint?
Products from Arbo and Everbuild, among others, chosen to suit the joint. We’ll tell you what we are using and why.