West Sussex · England
External & façade joints in Westbourne, West Sussex
Problem with your movement joints in Westbourne? We cut out the old, prepare the joints and apply the right sealant.
- Joints where the bead has come unstuck
- Hard, crazed mastic that has stopped moving
- Gaps where render, brick and frames meet
About our external mastic in Westbourne
Joints between dissimilar materials, like brick against render or concrete against a steel frame, see movement from both sides. A flexible exterior sealant takes up that movement where a rigid filler would soon crack. Typical jobs include weeds or debris growing in open joints and hard, crazed mastic that has stopped moving, across façade panels, concrete & block and copings & trims.
In a village or hamlet like Westbourne, older cottages and farm buildings often stand in the open, where walls and rooflines take the weather head on. Gutter joints and wall joints there need a sealant that can flex and stay put.
There’s a 12-month guarantee on every job, whatever its size.
- Where
- Westbourne (PO10)
- Region
- West Sussex
- Guarantee
- 12 months on all our work
- Price
- A clear quote up front
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
When it isn’t the sealant
Some problems need a builder, plumber or other trade rather than us:
- Loose or hollow render, which needs re-rendering
- Cracked brickwork or render that needs a builder or plasterer
- Walls that need new movement joints cut into them
If in doubt, phone 0345 464 0079 or send us an email and we will say what we think before you book.
Joints and surfaces we work on
- Concrete & block
- Brickwork movement joints
- Façade panels
- Copings & trims
- Render & cladding joints
- Joints between brick and frames
What affects the cost of external mastic
We do not publish a price list, because jobs vary so much. What we look at:
- Whether the work is at height
- Working hours on commercial sites
- How much old sealant there is and how hard it is to remove
- The product the joint needs
What it costs depends on the size of the job, how hard the old material is to remove and how easy the joints are to reach. We give a clear quote before we start, so you know where you stand.
What we need to know
To make quoting easier, let us know:
- A few pictures by email, if you can
- The problem you’ve noticed
- If it’s domestic, commercial or a hotel
- Whether it has been sealed before
The more we know about the job, the more useful the quote. Let us know the location, the problem and roughly how many joints.
Walls and rooflines in Westbourne
Westbourne is within about 2 miles 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. 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.
Letting a property close to Emsworth station? Then outside joints that have cracked can let damp into a rental, so check them between lets. For site and facilities teams at buildings such as Westbourne Primary School, its movement joints, gutters and trims need looking after like any other building’s.
Westbourne is about 3 miles east of Havant, in West Sussex. We provide external mastic to homes and businesses in Westbourne and nearby. Westbourne is one of 371 places in West Sussex we cover. Portsmouth is on our list too, about 8 miles from Westbourne.
Jobs for external mastic in PO10 works the same way as everywhere else we cover. Streets in the area include The Square, Church Road and Crockford Road, and we cover them all. We also cover Lumley (1 mile south), Woodmancote (1 mile east), Emsworth (1 mile south-west), Southbourne (1 mile south-east) and Denvilles (2 miles west). We also work in nearby towns such as Bognor Regis (12 miles south-east), Chichester (7 miles east), Selsey (11 miles south-east), Portfield (7 miles east), Yapton (14 miles east) and East Wittering (7 miles south).
Landmarks near Westbourne
Typical jobs here are in homes near Stansted Park, The Good Intent Public House and Bourne Community College. The nearest railway station is Emsworth station, roughly 1 mile south-west of the centre. A little further out are Warblington Castle (2.2 miles south-west) and Havant War Memorial Hospital (2.8 miles west). Not far away are Stoke Down and Brook Meadow (Emsworth).
Aftercare tips
A little care helps the new joints last. We recommend:
- Fix overflowing gutters above sealed joints
- Make sure movement joints are not pointed over
- Check external joints each spring
- Keep soil, plants and ivy away from the joints
Keep the joints clear of soil, plants and climbing growth. Anything that holds water against the joint wears it out sooner.
Leaks behind façade panels and render often go unseen. When it finally shows inside, the joint may have been open for years, so it’s worth resealing at the first signs.
Work for landlords, hotels and businesses
Mouldy or split sealant often shows up at the end of a tenancy, and it’s quick to put right between tenancies. Several properties can go on one quote.
In hotels, rooms out of use cost money, so the work can be planned room by room. Hotel work is part of what we do, alongside homes and businesses.
What we do, step by step
The work is kept neat and contained to the area we are working on, so you can get on with your day. The job generally takes anything from a few hours to several days, depending on the building, and we explain the cure time before we leave. Somewhere like Westbourne 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 look at every joint and agree a colour to suit the wall.
- We take out the old sealant until the faces are sound.
- Backing rod goes in so the sealant can stretch between the two faces.
- Primer is applied wherever the sealant needs it.
- We gun in low-modulus sealant and tool it neatly.
Before we arrive
- Keep children and pets away from the work area
- Let us know about earlier repairs to the joints
- Clear items away from the joints we’re working on
Getting a quote
There’s no standard price list. Instead, we give you a clear quote for your job. To get started, call 0345 464 0079 or send us an email.
Related advice
Questions from Westbourne
Will you come out to Westbourne?
Yes, Westbourne is covered. Our work covers London and the South East, from towns to the smallest places. Longer journeys are simply planned in advance.
Is external mastic in a coastal place like Westbourne any different?
Coastal weather is harder on outside sealant: there’s more wind-driven rain and, closer to the shore, salt in the air. The right product, a clean joint and the right depth all help it cope.
How do I get a quote for external mastic in Westbourne?
The cost depends on the size of the job, access and how much old sealant has to come out. Ask us for a quote and we will talk you through it.
Can you work on commercial sites?
Yes, regularly. Larger jobs can be planned room by room or area by area.
How long will you be here?
Most jobs take a few hours for a handful of joints, longer for a whole elevation, including the preparation. We’ll confirm how long when we quote.
Can landlords and businesses book you?
Yes, we do. We work in homes, commercial premises and hotels, and we are fully insured.
Do you work at height?
Each building is different. Tell us the height, the number of joints and what’s below them.
How long does external mastic last?
That depends on the wall, the weather and the movement. Look for splits, hardening or edges coming away, and reseal at that point.
Do you need external mastic in Westbourne?
If plants are growing out of a joint, the sealant has generally failed or was never there. Roots and dirt hold water against the wall and speed up the damage.
Signs it’s time to call us include:
- Brick movement joints where the sealant has split
- Gaps where render, brick and frames meet
- Weeds or debris growing in open joints
- Sealant pulling away from one side of the joint
In the older streets around St John the Baptist's Church, the joints between older walls, newer extensions and the roofline need a sealant that can move.
Before booking anyone
- How hidden problems are handled
- What the cure time is
- What insurance they hold
- Who turns up on the day
Why it’s worth doing now in Westbourne
Water gets in through a failed movement joint and can run behind render or cladding. Dealing with it early keeps the repair to the joint, instead of the wall and finishes around it. Around Westbourne, older homes often have timber in their floors and frames, where water from a failed joint can cause rot if it’s left.
There are no prices on our website, because each job is priced on what it involves. For a quick quote, please ring 0345 464 0079 or email us and we’ll talk you through it.
Why choose Mr Mastic in Westbourne
- Approved under the ARBOMaster scheme
- We leave the area clean and tidy
- Fully insured
- White, clear, grey or another colour, product permitting
Read our cost guide or our reviews.