West Sussex · England
External & façade joints in Burgess Hill, West Sussex
External mastic for Burgess Hill, by sealant specialists with 20+ years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Leaking joints around cladding and façade panels
- Joints pointed up with cement by mistake
- Sealant pulling away from one side of the joint
About our external mastic in Burgess Hill
A movement joint is only as good as its depth. Closed-cell backing rod sets the depth and stops the sealant sticking to the back, leaving it bonded to two faces so it can move with the wall. Common call-outs are for panel joints letting water in and joints where the bead has come unstuck, on façade panels, copings & trims and joints between brick and frames.
Extensions are a common sight on houses around Burgess Hill, and the joint where new wall meets old is a classic place for water to get in. Sealing it properly means the right joint depth and a flexible sealant, not a quick bead.
All our work is covered by a 12-month guarantee.
- Location
- Burgess Hill (RH15)
- Region
- West Sussex
- Cover
- A year, on every job
- Price
- A clear quote up front
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
For landlords and businesses
Housing providers, facilities teams and property managers book us too in Burgess Hill and across West Sussex. Several sites can go on one quote, and we’re fully insured.
We regularly work with letting and managing agents. Send the address, what’s needed and the access arrangements.
Outside joints around Burgess Hill
Historic houses like Ockenden Manor (about 3.4 miles north) are a reminder that the area around Burgess Hill has older buildings as well as new. In older buildings, older walls and rooflines need a sealant that moves with them and suits the material. The South East is one of the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
Rented homes near Burgess Hill station change hands often, and split movement joints are easy to miss on a rental until damp shows inside. Schools such as St Wilfrid's Catholic Primary School are buildings too, and its movement joints, gutters and trims need looking after like any other building’s.
Burgess Hill is about 9 miles north of Brighton, in West Sussex. If you need external mastic in Burgess Hill, please phone 0345 464 0079 or send us an email for a quick quote. We are based in Crawley and cover West Sussex. Our West Sussex coverage runs to 371 places, Burgess Hill among them. We also work in Brighton, about 9 miles from Burgess Hill.
Work in RH15 is quoted and booked the same way as anywhere else. If you need external mastic at a property on Church Road, Station Road and Lower Church Road or anywhere close by, our applicators can take on the job. Main roads around Burgess Hill include the A273 and B2036, which makes travel easy. If you’re just outside Burgess Hill, we cover Jacob's Post (1 mile west), World's End (1 mile north-east), Abbotsford (1 mile north-west), Goddards Green (2 miles west) and Hurst Wickham (2 miles south-west). Further out, we also cover Crawley (11 miles north), Horsham (11 miles north-west), Worthing (15 miles south-west), Haywards Heath (3 miles north-east), East Grinstead (13 miles north-east) and Shoreham-by-Sea (10 miles south-west). Burgess Hill is one of the larger places we cover in West Sussex.
Around Burgess Hill
In Burgess Hill, that means homes and buildings near Burgess Hill Girls, Oakmeeds Community College and The Six Gold Martlets pub and the streets around them. Burgess Hill has its own railway station: Burgess Hill station. Well-known places in the area include Burgess Hill Museum (within half a mile south-west) and Clayton Castle (3.4 miles south). The countryside around Burgess Hill includes Bedelands Farm Nature Reserve and Wolstonbury Hill.
Places near Burgess Hill
Also in Burgess Hill
DIY versus a professional finish
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.
If you’ve already had a go yourself, that’s fine. We cut it out and start again, so just mention it when you contact us.
The process
There isn’t much for you to do on the day. Point us to the joints and we will get on with it. The work itself takes a few hours to a few days, depending on the length of joint and the access from start to finish. In Burgess Hill, parking is rarely complicated, though it helps to know about driveways or restrictions, and mention if the work is upstairs, in a flat or high on the outside.
- We look at every joint and agree a colour to suit the wall.
- Failed sealant is removed back to clean, sound faces.
- Closed-cell backing rod is pushed in so the sealant bonds to two sides only.
- We prime the faces where required.
- We gun in low-modulus sealant and tool it neatly.
Getting ready for the visit
- Clear the area around the work
- Let us know if you’ve seen damp or leaks
- Keep children and pets away from the work area
Get a quote
Want a quote for external mastic? Please call 0345 464 0079 or drop us an email with a few details. You will know what we plan to do, and what it will cost, before any work begins.
Advice
What we cannot put right
Some problems need a builder, plumber or other trade rather than us:
- Walls that need new movement joints cut into them
- Rising or penetrating damp from elsewhere in the wall
- Cracked brickwork or render that needs a builder or plasterer
If in doubt, phone 0345 464 0079 or drop us an email and we’ll say what we think.
Surfaces we seal
- Render & cladding joints
- Brickwork movement joints
- Copings & trims
- Façade panels
- Joints between brick and frames
- Concrete & block
Burgess Hill questions
Do you cover Burgess Hill for external mastic?
Yes, Burgess Hill is within the area we cover. We work across London and the South East. You can phone 0345 464 0079 or send us an email and let us know what needs doing, and we will give you a clear price.
Do you work for landlords with property near Burgess Hill station?
Yes, rental work is part of what we do. Just ring 0345 464 0079 or drop us an email and tell us about the property, and we’ll give you a clear price.
Can new sealant go over the old?
No. The old sealant always comes out first, so the new sealant bonds properly.
Will the old sealant be removed?
Yes, always, and completely. New silicone does not stick to old silicone, so the joint is cleaned back first.
Should I point up the gap in my brickwork?
No. Cement or mortar can’t stretch and the joint fails. Where a joint has been mortared, it can often be raked out and sealed properly.
Do you use backing rod?
That is backing rod, a closed-cell foam. It keeps the sealant at the right depth and bonded to the sides only so it can flex with the joint.
Where are you based?
Our base is Crawley, with over 20 years’ experience. Our area covers South East England, London and Scotland.
How long does the job take?
That depends on the amount of work, but most jobs take anything from a few hours to several days, depending on the building. We’ll tell you when we quote.
Quotes for external mastic in Burgess Hill
Some jobs are bigger than they look, and some smaller. What affects the quote:
- How many rooms, windows or areas are involved
- Whether the work is at height
- Working hours on commercial sites
- How much old sealant there is and how hard it is to remove
No two jobs are quite the same, so we quote each one individually. The number of joints, how easy they are to reach and the sealant needed all make a difference.
Helping us quote
To help us quote quickly, let us know:
- Pictures of the joints, sent by email
- What’s wrong with the joints now
- Where the job is, and your postcode
- Any previous sealing or DIY work
Getting a quote is simple: let us know what needs doing and where. A few pictures by email make the job easier to understand, and we’ll come back to you with a quote.
What we’re called out for in Burgess Hill
Sunlight, wet weather and frost wear exterior sealant down. Over the years it hardens, cracks on the surface and loses its give, so the next time the wall moves, it splits or pulls away.
Keep an eye out for these signs:
- Brick movement joints where the sealant has split
- Sealant that has lost its bond to the brick or render
- Joints pointed up with cement by mistake
- Weathered mastic that no longer stretches
If you live in an older home near St John the Evangelist's Church, an extension built onto an older house moves differently, and the joint between them takes the strain.
Questions to ask before booking
- How the surfaces are prepared before sealing
- What happens if they find a problem under the old sealant
- Are they insured?
- What the cure time is
Aftercare tips
So the new joints stay in good condition:
- Fix overflowing gutters above sealed joints
- Ask before painting over external sealant
- Keep soil, plants and ivy away from the joints
- Keep movement joints as flexible joints, not mortar
Give the sealant the cure time we tell you before anything rubs against it. Most exterior sealants skin fast but take longer to cure right through.
If you can see gaps, plants or bare sections in a joint, have it checked. Early work is quicker and leaves a better finish.