West Sussex · England
External Mastic in Nyton
External mastic across Nyton and nearby, with old sealant always removed completely and a 12-month guarantee.
- Leaking joints around cladding and façade panels
- Weathered mastic that no longer stretches
- Rain getting behind render or cladding at a joint
About our external mastic in Nyton
Joints between dissimilar materials, like brick against render or concrete against a steel frame, see movement from both sides. A flexible sealant bridges the two. Typical jobs include joints pointed up with cement by mistake and hard, crazed mastic that has stopped moving, across concrete & block, brickwork movement joints and render & cladding joints.
Older homes in small places like Nyton may be stone, brick or timber-framed, often with later extensions. Where one material meets another is where water generally gets in.
The work is guaranteed for twelve months. If something is not right with it in that time, tell us and we will put it right.
- Where
- Nyton (PO20)
- Region
- West Sussex
- Cover
- 12 months on all our work
- Price
- A clear quote up front
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
Looking after it afterwards
Looking after new joints is easy, and it makes a real difference:
- Tell anyone working on the walls about the movement joints
- Act on the first splits you see
- Clear growth from the base of walls and joints
- Keep water from gutters off the wall
Only paint over the joint if we have confirmed the sealant can take paint. Paint can crack on a flexible joint and spoil the finish.
Leaks behind façade panels and render often go unseen. By the time there’s a damp patch, the damage can be well established, so it’s worth resealing at the first signs.
What happens on the day
Our applicators work methodically: protection first, then preparation, sealing and a tidy-up. For most jobs that takes a few hours to a few days, depending on the length of joint and the access and we leave things clean and tidy. Somewhere like Nyton needs a little journey planning: 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.
- We look at every joint and agree a colour to suit the wall.
- Failed sealant is removed back to clean, sound faces.
- Closed-cell backing rod is pushed in so the sealant bonds to two sides only.
- We prime the faces where required.
- A low-modulus exterior sealant is gunned in and tooled to a neat finish.
How to prepare
- Mention any leaks or damp you’ve noticed
- Plan for the work area to be out of bounds to pets and children
- Try not to wet indoor joints just before the visit
Ask for a quote
For a quick quote, get us on the phone, or send an email if you’d rather. Tell us about the joints that need doing and we’ll explain what’s involved before giving you a price.
Advice
Should I try it myself first?
Too much sealant is as bad as too little. A thick, smeared bead looks untidy and doesn’t move well, and the joint depth matters as much as the finish.
If you’re set on DIY, put the effort into preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it does not work out, we can still put it right.
FAQs for Nyton
Will you come out to Nyton?
Yes, we do. We work across London and the South East, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.
Is Nyton in your area for external mastic?
Yes, Nyton is within the area we cover. Our work covers London and the South East. Just phone 0345 464 0079 or drop us an email with a few details of the job.
What does external mastic cost?
Every job is different, so each one gets its own quote. For a quick quote, call 0345 464 0079 or send us an email with a short description of the job.
How long does the job take?
That depends on the amount of work, but as a guide it takes anything from a few hours to several days, depending on the building. We will tell you when we quote.
Do I have to be there?
It depends on the job. Inside work needs someone to give us access.
Do you use backing rod?
We fit closed-cell backing rod wherever the joint depth needs controlling. It controls the depth and stops the sealant bonding to the back, so the joint can move.
What do you put in the joint?
It depends on the joint: sanitary silicone where it gets wet, and sealants suited to movement or weather elsewhere. We use products from Arbo and Everbuild.
Do you work for landlords and businesses?
Yes. As well as householders, we work for landlords, agents, businesses and hotels.
What affects the quote in Nyton
For a quick quote, just ask. What matters most is:
- Whether the work is at height
- The number and length of the joints
- The type of sealant required
- Any mould that needs treating
We don’t show prices on the website, because each job is priced on what it involves. For a quick quote, please call 0345 464 0079 or email us.
Asking for a quote
Photos help, but a description is a good start. Please mention:
- Pictures of the joints, sent by email
- The type of property
- How many joints, rooms or windows are involved
- The address or postcode of the job
A good description makes for an accurate quote. Tell us where the job is, what’s wrong and how much there is.
Different surfaces, different methods
Cladding and façade panels
Panel systems often rely on sealant between and around the panels. We reseal them with a sealant suited to the panel material.
Brickwork movement joints
Brick moves with heat and moisture, and grows a little over time. The movement joint takes that up, so the sealant in it must stay soft and stretchy.
For landlords and businesses
We also work for businesses, from offices to washrooms and kitchens. For commercial premises, we can talk through working times when we quote.
We regularly work with letting and managing agents. Send the address, what’s needed and the access arrangements.
Nearby places to Nyton
More services for Nyton
External mastic in Nyton: local notes
Rainfall in the South East is lower than in much of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind. With historic houses such as Goodwood House (about 3.6 miles north-west) nearby, there’s older building stock in the area around Nyton as well as newer homes. In older buildings, older brick and stone need a sealant that suits them, at the right joint depth.
Managing a site like Ormiston Six Villages Academy? Then larger buildings have long runs of movement joint that eventually need resealing. Goodwood House, about 3.6 miles north-west, is one of the historic houses in the wider area around Nyton.
Nyton is about 4 miles north of Bognor Regis, in West Sussex. Our applicators cover external mastic for homes and businesses in Nyton and the surrounding area, as part of our work across West Sussex. Nyton is one of 371 towns and villages in West Sussex we cover. We also work in Portsmouth, around 18 miles away.
Work in PO20 works the same way as everywhere else we cover. Close by, we work in Westergate (1 mile south-east), Aldingbourne (1 mile west), Eastergate (1 mile east), Norton (1 mile north-west) and Crockerhill (1 mile north-west). Larger places within reach include Worthing (12 miles east), Bognor Regis (4 miles south), Chichester (5 miles west), Selsey (9 miles south-west), Littlehampton (7 miles east) and Lancing (15 miles east).
Local landmarks in Nyton
Typical jobs here are in homes near Eastergate CofE Primary School. The nearest railway station is Barnham station, about 1.6 miles south-east. A little further out are Bognor Regis War Memorial Hospital (3.4 miles south) and Tote Copse Castle (0.9 miles south-west).
Common problems we fix in Nyton
Poor preparation causes many early failures: joint faces that were dusty or damp, unprimed where they needed it, or still carrying old sealant. The new sealant then lets go long before it should.
Common reasons people contact us include:
- Gaps where render, brick and frames meet
- Water getting into walls through failed joints
- Joints with sealant missing in places
- Leaking joints around cladding and façade panels
For landlords with property near Barnham station, failed wall and movement joints let damp in, so they’re worth checking between tenancies.
What your quote should include
- How long to leave it before use
- Whether you can choose the colour
- How the surfaces are prepared before sealing
- What guarantee comes with the work