West Sussex · England
External Mastic in Billingshurst
Sealing brickwork movement joints, render, cladding and façade joints for homeowners, landlords and businesses in Billingshurst. ARBOMaster approved applicators, fully insured, with a one-year guarantee.
- Old sealant gone brittle and cracked
- Movement joints with cracked, split or missing sealant
- Leaking joints around cladding and façade panels
What we do, step by step
Our applicators work methodically: 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 the area is left clean. A visit to Billingshurst is planned like any other: the time, the access and where to park are agreed in advance. If the work is outside, the weather plays a part, as sealant needs a dry surface.
- We start by walking round the building and agreeing the joints and the access.
- We cut out the old mastic and rake out anything in the joint.
- The faces are brushed clean and primed where the product requires 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
- Let us know about parking restrictions
- Clear items away from the joints we are working on
- Mention any leaks or damp you’ve noticed
Get a quote
A good description makes for an accurate quote. Let us know the location, the problem and roughly how many joints, and add photos by email if you can.
Related advice
About our external mastic in Billingshurst
Short cuts in external joints show up within a season or two. Overfilled joints, missing backing rod and sealant laid over old sealant rarely last long. We strip the joint back and start again. Typical jobs include cracked joints where brick meets render or frames and movement joints with cracked, split or missing sealant, across render & cladding joints, copings & trims and façade panels.
Houses in smaller places like Billingshurst can stand more in the open than those in a built-up town, and walls and rooflines facing the weather take the worst of it. Joints on those sides are generally the first to go.
Whatever the size of the job, it’s backed by our one-year guarantee.
- Place
- Billingshurst (RH14)
- Wider area
- West Sussex
- Guarantee
- A year, on every job
- Quote
- Quoted before any work starts
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
Questions from Billingshurst
Do you cover smaller places like Billingshurst?
Yes, Billingshurst is covered. Our work covers London and the South East, and smaller places are part of that. The journey is planned ahead, so it helps to know about access.
Do you work for landlords with property near Billingshurst station?
Yes, we work for landlords and agents. You can call 0345 464 0079 or email us with the address and a few details, and we will give you a fixed price before any work starts.
Where do you work from?
We’re a Crawley-based firm. Our area covers South East England, London and Scotland.
Do you work at height?
That depends on the building and the joints. Where joints can be reached safely, we’ll do them. Give us some details and we will confirm the access.
When will the joints need doing again?
It depends on the exposure, the movement and the product. Treat it as a maintenance item and look at it yearly and reseal when it splits.
Do you work for hotels and businesses?
Yes. Hotels, offices and other businesses use us, and we’re fully insured.
Do you seal joints where cladding meets other materials?
Yes. The old joint is removed, both surfaces cleaned and primed where needed, and a flexible sealant applied. We pick a colour that works with both materials.
Why is there a gap in my brick wall?
A movement joint is a planned break in the wall that absorbs expansion and shrinkage. It’s sealed with a flexible sealant, not mortar.
What external mastic looks like in Billingshurst
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. Historic houses like Old Place Manor (about 4.9 miles south-west) are a reminder that the area around Billingshurst has older buildings as well as new. Where a home is older, older brick and stone need a sealant that suits them, at the right joint depth.
If you let a flat or house near Billingshurst station, outside joints that have cracked can let damp into a rental, so check them between lets. If you look after a building such as Billingshurst 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 Billingshurst Unitarian Chapel, an extension built onto an older house moves differently, and the joint between them takes the strain.
Billingshurst is about 6 miles south-west of Horsham, in West Sussex. For external mastic in and around Billingshurst, it’s easy to get a quote: please call 0345 464 0079 or drop us an email. We’re based in Crawley and cover West Sussex. Billingshurst is one of 371 places in West Sussex where we work. Crawley is on our list too, about 13 miles from Billingshurst.
Here we cover the RH14 postcode area for external mastic. External mastic is available to properties on High Street, Station Road and Lower Station Road and the roads around them. Neighbouring places we cover for external mastic include Coneyhurst (2 miles south-east), Newpound Common (2 miles north-west), Five Oaks (2 miles north-east), The Haven (3 miles north) and Slinfold (4 miles north-east). We also work in nearby towns such as Crawley (13 miles north-east), Horsham (6 miles north-east), Worthing (14 miles south), Haywards Heath (15 miles east), Burgess Hill (15 miles east) and Littlehampton (15 miles south).
Local landmarks in Billingshurst
Around Billingshurst, our work takes us to homes and buildings near The Railway Inn and The Weald School, among other places. There’s a railway station in Billingshurst itself: Billingshurst station. Green spaces nearby include The Mens.
Looking after it afterwards
Joint life depends on how it’s used and looked after. Here’s what we suggest:
- Ask before painting over external sealant
- Check external joints each spring
- Don’t let climbing plants root in the sealant
- Tell anyone working on the walls about the movement joints
Look over the joints once a year, ideally after winter. Watch for splits, edges coming away or growth in the joint.
Small splits are the time to act. At that stage it’s a simple cut out and reseal with no damage behind it to deal with.
What we can’t put right
Honest advice matters more to us than a booking, so here’s what sealant cannot fix:
- Loose or hollow render, which needs re-rendering
- Damp from another source, such as a leaking gutter or a bridged damp-proof course
- Walls that need new movement joints cut into them
If you are not sure, just ring 0345 464 0079 or drop us an email and we will give you a straight answer before you book.
Surfaces we seal
- Joints between brick and frames
- Brickwork movement joints
- Copings & trims
- Façade panels
- Render & cladding joints
- Concrete & block
What affects the cost of external mastic
We do not publish a price list, because jobs vary so much. What we look at:
- How much old sealant there is and how hard it is to remove
- The type of sealant required
- How many areas need sealing
- The size of the job
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. We take all of that into account in your quote.
What to tell us for a quote
Before you ask for a quote, have a think about:
- What’s wrong with the joints now
- Any access issues, like height or stairs
- Whether it’s a home or a business
- Roughly how big the job is
Call for a quick quote, or send an email if you’d rather. Tell us about the joints that need doing and we’ll talk you through the work.
What the job involves on each surface
Cladding and façade panels
If the façade has a specified sealant, that is what we use or an approved alternative. Tell us what the building has when you get in touch.
Copings and trims
Copings expand and contract through the day, so the joints need a sealant that stays flexible.
DIY sealant or a professional job?
Some sealant jobs are within reach of a careful DIYer, such as a straightforward joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
Sealing over old silicone is the commonest DIY error. Silicone doesn’t stick to old silicone, so it peels away and traps moisture behind it. All the old material has to come out first.
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Why deal with it now?
Low-modulus sealants stretch easily, so they put less strain on the joint edges. That matters on brick, render and concrete, which can be weaker at the face. A stiffer product can damage the joint edge as it fails. In an older home around Billingshurst, damp from a failed joint can get into timber and plaster, which is far harder to put right than the sealant itself.
Doing several joints on one visit is generally more efficient than separate visits, so tell us about everything that needs sealing. We will send you a clear quote for the lot.
Why Billingshurst clients choose us
- Fully insured
- Arbo and Everbuild products
- One-year guarantee on every job
- 180+ five-star Google reviews
See our cost guide or our reviews.