West Sussex · England
Somerley External Mastic
External mastic for Somerley and the surrounding area: careful preparation, the right product and tidy work. Call for a quick quote.
- Failed seals between different materials
- Rain getting behind render or cladding at a joint
- Leaking joints around cladding and façade panels
About our external mastic in Somerley
We are ARBOMaster approved applicators, and each external joint gets a sealant suited to it. Some surfaces need a primer before sealing and we use one wherever it does. We are often asked to deal with joints pointed up with cement by mistake and panel joints letting water in, across joints between brick and frames, concrete & block and copings & trims.
Somewhere as small as Somerley, homes and farm buildings often face open ground, where walls and rooflines take the weather head on. Joints on those walls need a sealant that moves with the building and stays in place.
You get a one-year guarantee, the same in Somerley as everywhere else we work.
- Place
- Somerley (PO20)
- Wider area
- West Sussex
- Guarantee
- One year on every job
- Quotes
- A clear price before any work starts
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
Looking after it afterwards
No joint lasts for ever, but care makes a real difference. Our tips:
- Tell anyone working on the walls about the movement joints
- Look over the joints every year, ideally after winter
- Keep water from gutters off the wall
- Keep high-pressure jets off the joints
Keep the joints clear of soil, plants and climbing growth. Anything that holds water against the joint wears it out sooner.
Once a joint cannot move, the wall finds another way, generally as cracking in the brickwork or render nearby. Resealing it early helps prevent that.
What affects the cost of external mastic
The price is agreed before any work begins. It’s based on:
- The product the joint needs
- The number and length of the joints
- Any working-time requirements on site
- Whether there’s mould to deal with
Every job is a little different, so each one gets its own quote. Size, access and the product the joint needs all play a part.
Helping us quote
Before you ask for a quote, have a think about:
- Where the property is
- Any access issues, like height or stairs
- Any previous sealing or DIY work
- Pictures of the joints, sent by email
For external mastic in Somerley, phone 0345 464 0079 or drop us an email. A short description of the job and where it is helps us quote, and we will agree the price before any work begins.
Landlord and commercial work in Somerley
Whether it’s one flat or a portfolio, you get the same standard of work: old sealant fully removed, joints prepared properly and a one-year guarantee.
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.
Walls and rooflines in Somerley
Somerley 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’s 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, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
If you look after a building such as Birdham CE Primary School, movement joints, cladding joints and gutters on larger buildings need the same care as a house’s. If you let a flat or house near Fishbourne station, failed wall and movement joints let damp in, so they’re worth checking between tenancies. Homes close to St James' Church include some older properties, and older walls, gutters and the joints where extensions meet them need a flexible sealant.
Somerley is about 4 miles north-west of Selsey, in West Sussex. We provide external mastic to homes and businesses in Somerley and nearby. Somerley is one of 371 towns and villages in West Sussex where we work for external mastic. Our Portsmouth page covers work nearby.
Every address in PO20 is within our area for external mastic. You’ll find streets such as Bell Lane and Hundredsteddle Lane. If you’re just outside Somerley, we cover Almodington (1 mile south-east), Birdham (1 mile north-east), Shipton Green (1 mile north-west), Earnley (1 mile south) and East Wittering (2 miles south-west). Further out, we also cover Bognor Regis (7 miles east), Chichester (5 miles north-east), Selsey (4 miles south-east), Littlehampton (14 miles east), Emsworth (6 miles north-west) and Rustington (15 miles east).
Local landmarks in Somerley
In Somerley, that means homes and buildings near The Birdham Public House. The closest station to Somerley is Fishbourne station, about 4 miles north of the centre. A little further out are Chichester Castle (4.9 miles north-east) and St Richard's Hospital (5.2 miles north-east). Not far away are Pilsey Island.
DIY sealant or a professional job?
What a professional job adds is preparation and the right product. We take joints back to clean, dry surfaces, and the sealant is matched to the joint and its conditions, and the work is guaranteed for a year.
A DIY attempt doesn’t rule out a professional job. We remove it and do the joint properly, so tell us about it when you ask for a quote.
The process
On the day, we start by going over the job with you, so you know exactly what we’re doing. We protect the surfaces around the joints before work begins. The work usually takes a few hours for a handful of joints, longer for a whole elevation. Somewhere as small as Somerley, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- We start by walking round the building and agreeing the joints and the access.
- Every bit of old sealant and any mortar or debris is cut out.
- The faces are brushed clean and primed where the product requires it.
- Backing rod sized to the joint goes in to set the depth.
- The exterior sealant is applied, tooled and checked along its length.
How to prepare
- Tell us about any previous sealing or DIY attempts
- Let us know about stairs, lifts or work at height
- Where the joints are inside, avoid wetting them before we arrive
How to get a quote
It all starts with a short chat. Tell us what’s wrong, where it is and how much there is, and we’ll talk you through what we’d do. Whenever you’re ready, call 0345 464 0079 or drop us an email.
Advice
When it is not the sealant
Honest advice matters more to us than a booking, so here’s what sealant can’t fix:
- Rising or penetrating damp from elsewhere in the wall
- Adding movement joints to masonry that has none
- Render that’s blown, hollow or coming away
If in doubt, phone 0345 464 0079 or drop us an email and we’ll say what we think before booking.
Surfaces we seal
- Concrete & block
- Brickwork movement joints
- Copings & trims
- Joints between brick and frames
- Façade panels
- Render & cladding joints
Towns and villages near Somerley
Also in Somerley
Why deal with it now?
A properly done movement joint is an even line in a colour that suits the wall. A rushed bead with no backing looks untidy and does not last, so it pays to do it properly once. Older cottages and farmhouses around Somerley can have timber floors and frames, and water through a failed joint can rot timber if it’s left.
Rather than a set price list, we look at what your job involves: the amount of work, the old material and the access. The price is agreed before we begin.
Why us?
- A sealant colour to suit the surroundings
- Rated 4.9 stars on Google
- Arbo and Everbuild products
- We agree the colour with you first
Questions from Somerley
I let a flat near Fishbourne station. Can you help?
Yes, rental work is part of what we do. You can call 0345 464 0079 or drop us an email with the address and a few details, and we’ll give you a fixed price before any work starts.
Does living near the coast affect external mastic in Somerley?
Near the sea, outside joints face more wind, rain and salt than they would inland, so preparation and the right sealant matter all the more. Walls facing the sea are normally the first to need attention.
How long will you be here?
A typical job takes a few hours to a few days, depending on the length of joint and the access, including the preparation. We will confirm how long when we quote.
Does someone need to be in?
We need access to the joints, so we will agree that with you when we book. Indoors, that usually means someone at home.
Should I point up the gap in my brickwork?
No, not where the gap is a movement joint. Pointing it stops it working, and the wall may crack nearby. We’ll reseal it with a flexible sealant.
What is a movement joint?
Walls move with heat, cold and moisture, and planned joints take up that movement. It’s closed with backing rod and a flexible sealant.
How long before the joint can be used?
That depends on the sealant used, so please follow the time we give you.
Can I add another job to the visit?
Yes, and it often makes sense. Combining jobs makes good use of the visit.