West Sussex · England
External & façade joints in Haslingbourne, West Sussex
External mastic in Haslingbourne from a team with over 20 years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Rigid filler in a joint that should flex
- Brick movement joints where the sealant has split
- Failed seals between different materials
About our external mastic in Haslingbourne
External mastic is a job where short cuts show quickly. Overfilled joints, missing backing rod and sealant laid over old sealant rarely last long. We take the old material out and do it properly. We work on brickwork movement joints, copings & trims and concrete & block, and the jobs we see most are old sealant gone brittle and cracked and joints pointed up with cement by mistake.
Around Haslingbourne, 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.
We guarantee the work for a year. If there’s a problem with our work within the year, let us know and we’ll sort it.
- Location
- Haslingbourne (GU28)
- Region
- West Sussex
- Cover
- 12 months on all our work
- Quote
- Quoted before any work starts
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
Landlords, agents and businesses in Haslingbourne
A neglected joint can let water reach the structure, which matters even more when someone else lives there. Resealing at the right time is simple maintenance that we can handle for you.
We also work for businesses, from offices to washrooms and kitchens. On commercial sites, working times can be discussed when we quote.
Places near Haslingbourne
Also in Haslingbourne
DIY versus a professional finish
What a professional job adds is preparation and the right product. Joints are cleaned back to sound surfaces and dried, and the sealant is matched to the joint and its conditions, then guaranteed for a year.
Overfilling a joint is a classic DIY mistake. A thick, smeared bead looks untidy and doesn’t move well, and getting the depth right matters as much as the look.
What happens on the day
The work is kept neat and contained to the area we are working on. Expect the work to take anything from a few hours to several days, depending on the building, and we tell you how long to leave it before we go. Somewhere like Haslingbourne needs a little journey planning: let us know about lanes, gates and parking. Everything for the job comes with us, so a second trip is avoided where possible.
- 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.
- Joint faces are cleaned back and primed if the sealant needs it.
- Backing rod sized to the joint goes in to set the depth.
- The exterior sealant is applied, tooled and checked along its length.
Preparing for the visit
- Where the joints are inside, avoid wetting them before we arrive
- Move anything stored near the joints
- Tell us about any water getting in
Getting a quote
The more we know about the job, the more useful the quote. Let us know the location, the problem and roughly how many joints, and add pictures by email if you can.
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Do you need external mastic in Haslingbourne?
Sometimes a movement joint was filled with mortar or a rigid filler. With the joint locked solid, the movement turns into cracks elsewhere in the wall.
Common reasons people contact us are:
- Water getting into walls through failed joints
- Panel joints letting water in
- Weathered mastic that no longer stretches
- Cracked joints where brick meets render or frames
Letting a property close to Pulborough station? Then split movement joints are easy to miss on a rental until damp shows inside.
Comparing quotes
- Who turns up on the day
- How the surfaces are prepared before sealing
- When the joint can take water or movement
- How the colour is chosen
Looking after it afterwards
Aftercare is simple:
- Never let anyone fill a movement joint with mortar
- Show decorators and builders where the movement joints are
- Look over the joints every year, ideally after winter
- Keep water from gutters off the wall
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.
Leave a failed movement joint and water keeps getting into the wall. Over time it can mean damp inside, stained render or frost-damaged brick which cost more to put right than the joint.
Haslingbourne questions
Do you work for landlords with property near Pulborough station?
Yes, we work for landlords and agents. Just phone 0345 464 0079 or send us an email and tell us about the property, and we will send you a clear quote.
Is Haslingbourne within the area you cover?
Yes, we do. We work across London and the South East, from towns to the smallest places. Longer journeys are simply planned in advance.
Do you have insurance?
Yes. Full insurance covers our work, and we can confirm the details when we quote.
Can new sealant go over the old?
No, because it fails. We remove every bit of old sealant first.
How long does the job take?
Typically it takes a few hours for a handful of joints, longer for a whole elevation. Larger jobs naturally take longer, and we will say how long yours will take.
Why is there a gap in my brick wall?
Most straight vertical gaps in brickwork are movement joints. It gives the wall room to move, and it should be sealed with a flexible sealant.
Do you remove the old sealant?
Yes, always, and completely. New silicone doesn’t stick to old silicone, so the joint is cleaned back first.
Can you do several jobs on one visit?
Yes, we can. Several rooms, windows or areas can go on one quote.
What external mastic looks like in Haslingbourne
With historic houses such as Petworth House (about 1.1 miles north-west) nearby, there’s older building stock in the area around Haslingbourne as well as newer homes. Where a home is older, older brick and stone need a sealant that suits them, at the right joint depth. Rainfall in the South East is lower than in much of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
Managing a site like Petworth Cof E Primary School? Then larger buildings have long runs of movement joint that eventually need resealing. For an older house near a landmark such as Church of St Bartholomew, old and new materials meet at the roofline and walls, which is where sealant earns its keep.
Haslingbourne is about 12 miles north of Littlehampton, in West Sussex. From the centre of Haslingbourne to the outskirts, external mastic is available for homes and businesses alike. Across West Sussex, we cover 371 places, Haslingbourne among them. Crawley is on our list too, around 20 miles away.
Jobs for external mastic in GU28 works the same way as everywhere else we cover. Close by, we work in Petworth (1 mile north-west), Rotherbridge (1 mile west), Hampers Green (2 miles north), Tillington (2 miles north-west) and Upperton (2 miles north-west). Larger places within reach include Horsham (14 miles north-east), Worthing (14 miles south-east), Bognor Regis (13 miles south), Chichester (12 miles south-west), Littlehampton (12 miles south) and Rustington (12 miles south).
Local landmarks in Haslingbourne
Typical jobs here are in homes near The Black Horse Public House. The closest station to Haslingbourne is Pulborough station, roughly 3.8 miles east of the centre. Other landmarks nearby include Coultershaw Heritage Site (0.9 miles south-west) and Coates Castle (1.8 miles south). Green spaces nearby include The Mens and Bignor Hill.
When it isn’t the sealant
Before booking, it’s worth knowing the limits too:
- Walls that need new movement joints cut into them
- Render that is blown, hollow or coming away
- Subsidence or other structural problems
If you’re not sure, just ring 0345 464 0079 or drop us an email and we will give you a straight answer before booking.
Surfaces we seal
- Concrete & block
- Copings & trims
- Façade panels
- Joints between brick and frames
- Render & cladding joints
- Brickwork movement joints
What affects the quote in Haslingbourne
The price is agreed before any work begins. It takes into account:
- Mould in or behind the old joints
- How much old sealant there is and how hard it is to remove
- Working hours on commercial sites
- How many areas need sealing
Doing several joints on one visit normally makes better use of the time than several visits. We’ll give you a clear quote for the lot.
Asking for a quote
What to tell us when you ask for a quote:
- Whether it’s a home or a business
- A few pictures by email, if you can
- If someone has resealed it before
- Any access issues, like height or stairs
Call for a quick quote, or send an email if you’d rather. Tell us about the joints that need doing and we will explain what’s involved.