West Sussex · England
Aldingbourne External Mastic
Sealing brickwork movement joints, render, cladding and façade joints for homes and businesses in Aldingbourne and across West Sussex. Fully insured, ARBOMaster approved and guaranteed for a year.
- Rain getting behind render or cladding at a joint
- Joints with sealant missing in places
- Weathered mastic that no longer stretches
About our external mastic in Aldingbourne
Short cuts in external joints show up within a season or two. New sealant over old, joints packed with mortar and beads with no backing rarely last long. We take the old material out and do it properly. Typical jobs include brick movement joints where the sealant has split and hard, crazed mastic that has stopped moving, across brickwork movement joints, copings & trims and render & cladding joints.
Somewhere as small as Aldingbourne, homes and farm buildings often face open ground, so walls and rooflines take the full force of wind and rain. Joints on those walls need a sealant that moves with the building and stays in place.
Whatever the size of the job, it’s backed by our one-year guarantee in Aldingbourne and across West Sussex.
- Place
- Aldingbourne (PO20)
- Region
- West Sussex
- Guarantee
- A year, on every job
- Quote
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
What external mastic looks like in Aldingbourne
London and the South East are among the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind. Historic houses like Goodwood House (about 3.2 miles north-west) are a reminder that the area around Aldingbourne has older buildings as well as new. In older buildings, older brick and stone need a sealant that suits them, at the right joint depth.
If you let a flat or house near Barnham station, outside joints that have cracked can let damp into a rental, so check them between lets. Schools such as Aldingbourne Primary School are buildings too, and larger buildings have long runs of movement joint that eventually need resealing.
Aldingbourne is about 3 miles north of Bognor Regis, in West Sussex. Whether you’re in the middle of Aldingbourne or further out, we cover external mastic for every kind of property, from flats and houses to offices and hotels. Aldingbourne is one of 371 towns and villages in West Sussex we cover for external mastic. We also work in Portsmouth, about 17 miles from Aldingbourne.
We work across the PO20 postcode area for external mastic and the streets around it. Streets in the area include Hook Lane and Park Lane. Other places close to Aldingbourne include Nyton (1 mile east), Norton (1 mile north), Westergate (1 mile east), East Hampnett (1 mile north-west) and Crockerhill (1 mile north). We also work in nearby towns such as Worthing (13 miles east), Bognor Regis (3 miles south), Chichester (4 miles west), Selsey (9 miles south-west), Littlehampton (7 miles east) and Emsworth (11 miles west).
Near you in Aldingbourne
Locally, jobs take us to homes and businesses close to Ormiston Six Villages Academy, among other places. For rail, the closest station is Barnham station, roughly 2.1 miles east. Nearby you will also find The Chichester City Museum (3.9 miles west) and Bognor Regis War Memorial Hospital (3.3 miles south).
Nearby places to Aldingbourne
More services for Aldingbourne
Work for landlords, hotels and businesses
From a single let to a portfolio, you get the same standard of work: old sealant fully removed, joints prepared properly and a 12-month guarantee.
Hotels need rooms back in use, so we plan the work room by room around your bookings where we can. Hotel work is part of what we do, alongside homes and businesses.
DIY sealant or a professional job?
Overfilling a joint is a classic DIY mistake. A heavy bead looks messy and copes badly with movement, and getting the depth right matters as much as the look.
Some jobs are best left to a professional: work at height, external movement joints, fire-rated sealant and large areas call for the right materials, safe access and experience.
What affects the quote in Aldingbourne
Your quote is based on your job. We take into account:
- Whether old sealant or filler has to be cut out
- How easy the joints are to reach
- How much there is to do
- The product the joint needs
Homes and businesses are quoted the same way: the amount of work, the access and the products needed, plus any working-time requirements on site. Ask us for a quote and we’ll explain what it covers.
Asking for a quote
Photos help, but a description is a good start. Please mention:
- Any access issues, like height or stairs
- Where the job is, and your postcode
- Any previous sealing or DIY work
- Roughly how big the job is
To get a quote, call 0345 464 0079 or send us an email and tell us where the job is and what the problem looks like. You’ll have a clear quote before we start.
Your questions about external mastic in Aldingbourne
Will you come out to Aldingbourne?
Yes, Aldingbourne is covered. Our work covers London and the South East, and smaller places are part of that. Longer journeys are simply planned in advance.
Do you work for landlords with property near Barnham station?
Yes, landlords and agents are among the people we work for. Just phone 0345 464 0079 or email us with the address and what needs doing, and we’ll give you a clear price.
Do you work for hotels and businesses?
Yes, regularly. We can plan bigger jobs in stages to suit the site.
Which products do you use?
Products from Arbo and Everbuild, among others, chosen to suit the joint. We explain the product when we quote.
Is it OK to fill a movement joint with cement?
No. Rigid materials cannot move with the wall, so the joint stops doing its job. If it has already been filled, we can normally cut it out and reseal it.
Do you have insurance?
Yes. We’re fully insured, and we can confirm the details when we quote.
Do you work at height?
It depends on the building. Send us pictures and a rough idea of the height, and we’ll confirm what access is needed.
Will the old sealant be removed?
Yes. All of the old material is cut out and the joint cleaned.
What we’re called out for in Aldingbourne
The wrong product in a moving joint is a classic cause. A high-modulus or general-purpose sealant can be too rigid for a busy joint, and it tears off the sides.
Any of these means the joints need attention:
- Panel joints letting water in
- Rain getting behind render or cladding at a joint
- Joints where the bead has come unstuck
- Weeds or debris growing in open joints
In the older streets around The Parish Church of St Mary, older walls, gutters and the joints where extensions meet them need a flexible sealant.
Questions to ask before booking
- Who turns up on the day
- Whether they’re fully insured
- What product goes in the joint
- What guarantee comes with the work
What we do, step by step
Most of a good job is in the preparation, so that is where we spend the time. Every joint is cleaned and dried before new material goes in. In total, it generally takes a few hours for a handful of joints, longer for a whole elevation. For a village or hamlet like Aldingbourne, the journey is planned in advance: tell us about narrow lanes, gates, long drives and where we can park. Everything for the job comes with us, so a second trip is avoided where possible.
- First, the joints are inspected and the access agreed.
- Every bit of old sealant and any mortar or debris is cut out.
- Joint faces are cleaned back and primed if the sealant needs it.
- We fit closed-cell backing rod to control the depth.
- We apply the sealant, tool it and check the whole run.
How to prepare
- Move anything stored near the joints
- Let us know about parking restrictions
- Keep pets and children clear of the area while we work
Get a quote
We don’t publish a price list, as no two jobs are quite the same. Instead, we send you a clear quote for your job. To get started, call 0345 464 0079 or drop us an email.
Read more
How to look after the new joints
Once the sealant has cured, a few habits help it last:
- Deal with leaking gutters that soak the joints below
- Keep soil, plants and ivy away from the joints
- Avoid pressure-washing directly into sealant joints
- Have failed joints looked at early
Don’t let soil, plants or ivy build up against the new joints. Damp material against the sealant shortens its life.
A joint that has stopped moving pushes the movement elsewhere, often as cracks near the joint. Catch it early and you reduce the risk.
What the job involves on each surface
Copings and trims
A failed coping joint lets water into the top of the wall. Sealing them early saves the wall below.
Concrete and blockwork
The face of concrete or block is often dusty, so preparation is key. A primer goes on where the product requires one before the bead.