West Sussex · England
Middleton-on-Sea External Mastic
We cover Middleton-on-Sea for sealing brickwork movement joints, render, cladding and façade joints. Old sealant removed completely, joints prepared properly and every job guaranteed for a year.
- Movement joints filled with mortar instead of sealant
- Plants rooting in failed movement joints
- Weathered mastic that no longer stretches
Middleton-on-Sea questions
Do you cover smaller places like Middleton-on-Sea?
Yes, Middleton-on-Sea is covered. Our work covers London and the South East, and smaller places are part of that. The journey is planned ahead, so it helps to know about access.
Does living near the coast affect external mastic in Middleton-on-Sea?
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.
Do I need to be at home?
It depends on the job. For work indoors, someone needs to let us in.
What do you put in the joint?
It depends on the joint: anti-fungal sanitary silicone in wet areas, and other sealants where joints move or face the weather. We use products from Arbo and Everbuild.
When is the sealant fully cured?
Cure times vary by product. We tell you how long to leave it before we go.
Do you do commercial work?
Yes. We have worked for hotels, offices and other businesses, and we’re fully insured.
Should I try DIY first?
It depends on the job. Work at height, movement joints, fire-rated gaps and large areas are best left to a professional, while a short indoor joint may be within reach.
Do you remove the old sealant?
Yes, every time. New silicone does not stick to old silicone, so any old material comes out before anything new goes in.
How we handle external mastic in Middleton-on-Sea
Low-level joints can usually be done from the ground. For joints higher up, give us some details of the building and we’ll confirm what access is needed. We work on joints between brick and frames, render & cladding joints and concrete & block, and the jobs we see most are cracked joints where brick meets render or frames and old sealant gone brittle and cracked.
Homes around Middleton-on-Sea range from older cottages to newer houses, with walls and rooflines of every type. Older gutters and trims need their joints resealed; newer brick and render need their movement joints kept sound.
All our work comes with a one-year guarantee.
- Place
- Middleton-on-Sea (PO22, BN18)
- Region
- West Sussex
- Cover
- A year, on every job
- Quotes
- A clear price before any work starts
- Call
- 0345 464 0079
- Updated
- 26 October 2026
What happens if it’s left?
Water gets in through a failed movement joint, behind render and cladding. Resealing early keeps the job to the joint itself, rather than the wall around it. In a smaller place like Middleton-on-Sea, wherever a wall is exposed, a failed outside joint is a real source of damp. Inside, a split seal lets water into floors and panels just as it would anywhere.
Commercial jobs are quoted on the same basis as homes: the amount of work, the access and the products needed, plus any working-time requirements on site. Ask us for a quote and we will go through it with you.
Why book with us
- We’re fully insured
- A sealant colour to suit the surroundings
- 12-month guarantee on every job
- Colour agreed with you before any work starts
Take a look at what affects the cost or what customers say.
Looking after it afterwards
Good habits help new joints last longer. Our tips:
- Keep soil, plants and ivy away from the joints
- Wash walls gently around the sealant
- Make sure movement joints aren’t pointed over
- Show decorators and builders where the movement joints are
Give the sealant the cure time we tell you before anything rubs against it. The surface skins over quickly, but full cure takes longer.
A joint that has stopped moving pushes the movement elsewhere, generally as cracking in the brickwork or render nearby. Resealing it early helps prevent that.
What affects the quote in Middleton-on-Sea
Some jobs are bigger than they look, and some smaller. What affects the quote:
- The product the joint needs
- Whether there’s mould to deal with
- Any working-time requirements on site
- Whether old sealant or filler has to be cut out
Combining jobs into one visit generally makes better use of the time than several visits, so tell us about everything that needs sealing. You will get one clear quote for the whole job.
What we need to know
A few details help us give you an accurate quote. When you get in contact, it helps to mention:
- If someone has resealed it before
- A few pictures by email, if you can
- Access, such as stairs, a lift or height
- Where the job is, and your postcode
If you are in Middleton-on-Sea 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.
When to call us in Middleton-on-Sea
Every building moves. Clay bricks expand slightly over their life, concrete and block shrink, and everything moves with temperature and wet. All of that ends up in the joint sealant.
Most people get in touch after spotting one of these:
- Weeds or debris growing in open joints
- Movement joints with cracked, split or missing sealant
- Hard, crazed mastic that has stopped moving
- Water getting into walls through failed joints
Rented homes near Bognor Regis station change hands often, and split movement joints are easy to miss on a rental until damp shows inside.
What to look for in a quote
- What guarantee comes with the work
- Are they insured?
- How long to leave it before use
- What product goes in the joint
Surface by surface
Render joints
Render has movement joints and stop beads that need sealing. They’re resealed in a sealant that suits the render.
Copings and trims
Coping joints that leak let water straight down into the wall. Sealing them early saves the wall below.
Nearby places to Middleton-on-Sea
Also in Middleton-on-Sea
What we do, step by step
Good joint work is mostly preparation, and we don’t rush it. Joints are cleaned back and dried before anything new goes in. In total, it generally takes anything from a few hours to several days, depending on the building. For a job in Middleton-on-Sea, we agree the time, the access and parking before the day. If the work is outside, the weather plays a part, as sealant needs a dry surface.
- 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.
- We fit closed-cell backing rod to control the depth.
- The exterior sealant is applied, tooled and checked along its length.
Getting ready for the visit
- Clear the area around the work
- Keep pets and children clear of the area while we work
- Let us know about parking restrictions
Get a quote
We quote each job on its own. Just call 0345 464 0079 or email us with the details and send photos if you have them.
Related advice
External mastic in Middleton-on-Sea: local notes
Middleton-on-Sea is close to the coast, and homes near the sea take more wind-driven rain, with salt in the air closer to the shore. Both are hard on movement joints and outside wall joints, which can dry out and crack sooner where a building faces the weather. Compared with the north and west, the South East gets less rain, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
For an older house near a landmark such as St Nicholas Church, older walls, gutters and the joints where extensions meet them need a flexible sealant. If you look after a building such as Bishop Tufnell CofE Primary School, movement joints, cladding joints and gutters on larger buildings need the same care as a house’s.
Middleton-on-Sea is about 3 miles east of Bognor Regis, in West Sussex. Every kind of property in Middleton-on-Sea is covered for external mastic. The work is guaranteed for a year. Middleton-on-Sea is one of 371 towns and villages in West Sussex we cover for external mastic. Portsmouth is on our list too, around 20 miles away.
Here we cover the PO22 and BN18 postcode area for external mastic. External mastic is available to properties on Sea Lane, Elmer Road and Yapton Road and the roads around them. Neighbouring places we cover for external mastic include Elmer (1 mile east), Bilsham (1 mile north), Flansham (1 mile north-west), Felpham (2 miles west) and Yapton (2 miles north). Larger places within reach include Worthing (10 miles east), Bognor Regis (3 miles west), Chichester (8 miles north-west), Selsey (8 miles south-west), Littlehampton (4 miles east) and Lancing (13 miles east).
What’s near Middleton-on-Sea
In Middleton-on-Sea, that means homes and buildings near Felpham Community College, among other places. The closest station to Middleton-on-Sea is Bognor Regis station, about 2.5 miles west of the centre. A little further out are Bognor Regis Museum (2.7 miles west) and Tote Copse Castle (4.2 miles north-west).
When it isn’t the sealant
Some problems need a builder, plumber or other trade rather than us:
- Movement that is more than a sealant joint can take
- Loose or hollow render, which needs re-rendering
- Cracked brickwork or render that needs a builder or plasterer
If you’re not sure, just ring 0345 464 0079 or drop us an email and we will give you a straight answer before you book.
Where we work in Middleton-on-Sea
- Joints between brick and frames
- Render & cladding joints
- Concrete & block
- Copings & trims
- Façade panels
- Brickwork movement joints