West Sussex · England
South Bersted External Mastic
Our applicators work in South Bersted on sealing brickwork movement joints, render, cladding and façade joints. Old sealant removed completely, joints prepared properly and every job guaranteed for a year.
- Rain getting behind render or cladding at a joint
- Failed seals between different materials
- Old sealant gone brittle and cracked
What we’re called out for in South Bersted
Joints sealed without backing rod, or far too deep, rarely last. Sealant bonded to three sides has nowhere to go and rips as the joint opens.
Look out for any of the following:
- Sealant that has lost its bond to the brick or render
- Leaking joints around cladding and façade panels
- Joints with sealant missing in places
- Weathered mastic that no longer stretches
In the older streets around Church of St Mary Magdalene, older walls, gutters and the joints where extensions meet them need a flexible sealant.
Before you book anyone
- How long to leave it before use
- How hidden problems are handled
- What the quote includes, VAT included or not
- Are they insured?
External mastic in South Bersted
We’re ARBOMaster approved applicators, and each external joint gets a sealant suited to it. Porous or awkward surfaces are primed where the sealant needs it and we use one wherever it does. If you are dealing with cracked joints where brick meets render or frames and weeds or debris growing in open joints, we can put it right, on concrete & block, brickwork movement joints and joints between brick and frames alike.
In and around South Bersted, older properties sit alongside newer ones, each with its own outside joints. Older gutters and trims need their joints resealed; newer brick and render need their movement joints kept sound.
Whatever the size of the job, you get the same 12-month guarantee in South Bersted and across West Sussex.
- Location
- South Bersted (PO21, PO22, BN14)
- Wider area
- West Sussex
- Guarantee
- A year, on every job
- Quote
- A clear price before we start
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
Leave it or put it right?
Water gets in through a failed movement joint and can run behind render or cladding. Resealing early keeps the job to the joint itself, rather than the wall around it. In an older home around South Bersted, damp from a failed joint can get into timber and plaster, and that’s a much bigger job than renewing the sealant.
Doing several joints on one visit generally makes better use of the time than several visits. You will get one clear quote for the whole job.
Why book with us
- Experience in homes, commercial sites and hotels
- We agree the colour with you first
- Full insurance on every job
- An ARBOMaster approved applicator
Take a look at how sealant jobs are priced and customer reviews.
Quotes for external mastic in South Bersted
We do not publish a price list, because no two jobs are the same. What we look at:
- Working hours on commercial sites
- Mould in or behind the old joints
- Whether old sealant or filler has to be cut out
- How many areas need sealing
Leaving a failed joint normally makes the job bigger, not smaller, because water and mould keep working on it. If you are not sure whether it needs doing, ring 0345 464 0079 or send us an email and we’ll give you an honest view and a quote.
What we need to know
You do not need to know the technical terms. Just tell us:
- Any access issues, like height or stairs
- What’s wrong with the joints now
- Roughly how big the job is
- Any previous sealing or DIY work
Asking for a quote is easy: tell us what needs doing and where. Photos by email help us understand the job.
When it isn’t the sealant
A few problems are outside what sealant work can do:
- Failed render or damaged cladding panels
- Cracks in the bricks or render themselves, away from the joints
- Rising or penetrating damp from elsewhere in the wall
Not sure which it is? You can phone 0345 464 0079 or send us an email and we will tell you honestly before booking.
What we seal
- Concrete & block
- Brickwork movement joints
- Render & cladding joints
- Copings & trims
- Joints between brick and frames
- Façade panels
South Bersted: your questions answered
Do you cover smaller places like South Bersted?
Yes, smaller places are covered as well as towns. Our work covers London and the South East. Just mention lanes, gates or anything else about the route when you book.
Does living near the coast affect external mastic in South Bersted?
Coastal weather is harder on outside sealant: there’s more wind-driven rain and, closer to the shore, salt in the air. Choosing the right sealant for the frame and wall, laid at the right depth, helps it last.
Are you ARBOMaster approved?
Yes. Mr Mastic is an ARBOMaster approved applicator, and we are fully insured.
How long before the joint can be used?
That depends on the sealant used, so please follow the time we give you when we finish.
Will it make a mess?
Tidy work is part of the job. We protect what’s around the joints, and we clear up when we are done.
What information do you need?
Where the job is, what the problem is and roughly how big it is. Photos by email help too.
Do you use backing rod?
Backing rod goes into deeper joints as a matter of course. It sets the sealant depth and prevents three-sided bonding so the bead can stretch.
How long does external mastic last?
That depends on the wall, the weather and the movement. Look for splits, hardening or edges coming away.
Different surfaces, different methods
Render joints
Cracks along render joints let water in behind the coat. A sound joint keeps the render dry behind and helps it last.
Concrete and blockwork
The face of concrete or block is often dusty, so preparation is key. We prime where the sealant needs it before the bead.
DIY versus a professional finish
If you’ve already had a go yourself, that is fine. We remove it and do the joint properly, so just mention it when you contact us.
Not every job suits DIY: high-level joints, fire-rated gaps, external movement joints and big jobs call for the right materials, safe access and experience.
What happens on the day
There’s no need to move everything out before we come, just the space around the work. We protect the rest, and the job takes a few hours to a few days, depending on the length of joint and the access for a typical job. A visit to South Bersted 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.
- First, the joints are inspected and the access agreed.
- 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.
- We fit closed-cell backing rod to control the depth.
- The exterior sealant is applied, tooled and checked along its length.
Before we arrive
- Let us know about stairs, lifts or work at height
- Try not to wet indoor joints just before the visit
- Keep children and pets away from the work area
Get a quote
If you’re in South Bersted and need external mastic, phone 0345 464 0079 or email us. Tell us what the problem is and where, and we’ll agree the price before any work begins.
Advice
Walls and rooflines in South Bersted
South Bersted is close to the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. That is hard on movement joints and outside wall joints, especially on the side facing the sea. London and the South East are among the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
Rented homes near Bognor Regis station change hands often, and outside joints that have cracked can let damp into a rental, so check them between lets. If you look after a building such as South Bersted CofE Primary School, larger buildings have long runs of movement joint that eventually need resealing.
South Bersted is about 1 mile north-east of Bognor Regis, in West Sussex. Whether you’re in the middle of South Bersted or further out, we cover external mastic for every kind of property, from flats and houses to offices and hotels. South Bersted is one of 371 towns and villages in West Sussex we cover. We also work in Portsmouth, about 18 miles from South Bersted.
Work in PO21, PO22 and BN14 works the same way as everywhere else we cover. Whether your property is on Ivy Lane, Hook Lane and Essex Road or anywhere close by, we can help. Other places close to South Bersted include Bognor Regis (1 mile south-west), Felpham (1 mile east), Shripney (1 mile north), Aldwick (2 miles south-west) and Flansham (2 miles north-east). Further out, we also cover Worthing (12 miles east), Chichester (6 miles north-west), Selsey (6 miles south-west), Littlehampton (6 miles east), Emsworth (12 miles west) and Rustington (7 miles east).
Near you in South Bersted
Locally, jobs take us to homes and businesses close to The Brooks Local Nature Reserve, The Regis School and The William Hardwicke pub, among other places. There’s a railway station in South Bersted itself: Bognor Regis station. A little further out are Bognor Regis War Memorial Hospital (within half a mile south) and Bognor Regis Museum (0.8 miles south).