West Sussex · England
Nyetimber External Mastic
External mastic in Nyetimber from a team with over 20 years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Movement joints with cracked, split or missing sealant
- Panel joints letting water in
- Old sealant gone brittle and cracked
Can I do it myself?
If you do try it yourself, take your time over the preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it fails, we can still redo it.
The biggest DIY mistake is sealing over old sealant. New silicone won’t bond to old, so it peels away and traps moisture behind it. Everything old must be removed first.
External mastic in Nyetimber, done properly
Joints between dissimilar materials, like brick against render or concrete against a steel frame, see movement from both sides. A flexible exterior sealant takes up that movement where mortar or filler would crack. We work on façade panels, concrete & block and brickwork movement joints, and common reasons people get in touch are sealant pulling away from one side of the joint and joints with sealant missing in places.
Homes around Nyetimber range from older cottages to newer houses, with walls and rooflines of every type. Older homes need their gutter and trim joints kept tight, newer ones their movement joints.
We guarantee the work for a year. If something isn’t right with it in that time, tell us and we’ll put it right.
- Where
- Nyetimber (PO21)
- Wider area
- West Sussex
- Guarantee
- One year on every job
- Quotes
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
Quotes for external mastic in Nyetimber
We don’t publish a price list. What we look at:
- Whether there’s mould to deal with
- How many rooms, windows or areas are involved
- The product the joint needs
- When we can work, for business premises
Homes and businesses are quoted the same way: how much there is to do, how we reach it and what it needs. Ask us for a quote and we’ll go through it with you.
Asking for a quote
When you contact us, these details help:
- Access, such as stairs, a lift or height
- The address or postcode of the job
- What’s wrong with the joints now
- Whether it’s a home or a business
If you are in Nyetimber and need external mastic, ring 0345 464 0079 or send us an email. A short description of the job and where it is helps us quote, and you’ll get a clear quote before we start.
Aftercare tips
Once the sealant has cured, a few habits help it last:
- Clear growth from the base of walls and joints
- Never let anyone fill a movement joint with mortar
- Walk round the building once a year and look at the joints
- Show decorators and builders where the movement joints are
Do not paint over the new sealant unless we’ve said the product is paintable. Paint can crack on a flexible joint.
Once a joint cannot move, the wall finds another way, often as cracks near the joint. Resealing it early helps prevent that.
Nyetimber questions
Is external mastic in a coastal place like Nyetimber any different?
Near the sea, outside joints face more wind, rain and salt than they would inland, so the choice of sealant and the preparation matter even more. Walls facing the sea are usually the first to need attention.
Can you help a landlord with a rental near Bognor Regis station?
Yes. We work for landlords and agents as well as homeowners, and several properties can go on one quote. Just call 0345 464 0079 or send us an email with the address and what needs doing, and we’ll send you a clear quote.
Do the sealants smell?
Sometimes, a little. Any smell clears as the sealant cures.
Can I do it myself?
Some simple jobs can be done by a careful DIYer. Most DIY failures come from sealing over old material, wet joints or too much sealant.
Can you match the colour of my brickwork?
We aim for a joint that suits the wall rather than one that jumps out. Colour is agreed with you before we begin.
Do you work in Nyetimber?
We do. Our applicators work in Nyetimber, and the service is the same as everywhere else.
Do you remove the old sealant?
Yes. Sealing over old sealant is the main reason resealing fails early, so we never do it.
How do I get a quote for external mastic in Nyetimber?
The cost depends on the size of the job, access and how much old sealant has to come out. Ask us for a quote.
Nearby places to Nyetimber
More services for Nyetimber
When something else is needed
New sealant can’t fix everything, and we’d rather say so up front. It won’t solve:
- Damp from another source, such as a leaking gutter or a bridged damp-proof course
- Cutting new joints into brickwork, which is building work rather than sealant work
- Loose or hollow render, which needs re-rendering
If in doubt, call 0345 464 0079 or send us an email and we’ll say what we think before you book.
Joints and surfaces we work on
- Brickwork movement joints
- Copings & trims
- Joints between brick and frames
- Concrete & block
- Render & cladding joints
- Façade panels
The process
We keep the work tidy and contained to the joints we are treating, so you can carry on as normal. The job usually takes anything from a few hours to several days, depending on the building, and we explain the cure time before we leave. Parking around Nyetimber is generally easier than in a town centre, but mention any lanes, gates or long drives. If the job is outside, tell us about side access and how high the joints are.
- We look at every joint and agree a colour to suit the wall.
- We take out the old sealant until the faces are sound.
- Closed-cell backing rod is pushed in so the sealant bonds to two sides only.
- Primer is applied wherever the sealant needs it.
- A low-modulus exterior sealant is gunned in and tooled to a neat finish.
How to prepare
- Keep children and pets away from the work area
- Let us know about stairs, lifts or work at height
- Mention any leaks or damp you’ve noticed
How to get a quote
To get a quote, phone 0345 464 0079 or email us with the location and a short description of the problem. We’ll give you a clear quote before any work starts.
Related advice
What we’re called out for in Nyetimber
Joints sealed without backing rod, or far too deep, rarely last. Sealant bonded to three sides has nowhere to go and tears as soon as the joint widens.
Any of these means the joints need attention:
- Gaps where render, brick and frames meet
- Joints where the bead has come unstuck
- Joints pointed up with cement by mistake
- Weathered mastic that no longer stretches
If you live in an older home near The Parish Church of St Thomas A Becket, older walls, gutters and the joints where extensions meet them need a flexible sealant.
Comparing quotes
- Whether you can choose the colour
- What product goes in the joint
- How hidden problems are handled
- Who turns up on the day
For landlords and businesses
From a single let to a portfolio, you get the same standard of work: the old material taken out, careful preparation and a 12-month guarantee.
We also work for businesses, from offices to washrooms and kitchens. On commercial sites, working times can be discussed when we quote.
Walls and rooflines in Nyetimber
Nyetimber is within about 1 mile of the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. 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, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
Managing a site like Rose Green Infant School? Then larger buildings have long runs of movement joint that eventually need resealing. Letting a property close to Bognor Regis station? Then failed wall and movement joints let damp in, so they’re worth checking between tenancies.
Nyetimber is about 2 miles south-west of Bognor Regis, in West Sussex. Nyetimber gets the same service as everywhere we cover: old sealant removed completely, careful preparation and a 12-month guarantee. We cover 371 towns and villages across West Sussex, from the larger towns to small villages. You can also see our page for Portsmouth, about 15 miles away.
Jobs for external mastic in PO21 is quoted and booked the same way as anywhere else. Local streets include Lion Road, Hook Lane and Anson Road, and we cover them all. We also cover Pagham (1 mile south-west), Aldwick (1 mile east), South Mundham (2 miles north-west), Fisher (2 miles north-west) and Sidlesham (2 miles west). Further out, we also cover Worthing (15 miles east), Chichester (5 miles north-west), Selsey (4 miles south-west), Littlehampton (9 miles east), Emsworth (10 miles north-west) and Rustington (10 miles east).
Local landmarks in Nyetimber
In Nyetimber, that means homes and buildings near Avisford, The Regis School and The Lamb pub, among other places. Nyetimber’s nearest station is Bognor Regis station, roughly 2.6 miles east of the centre. Other landmarks nearby include Bognor Regis Museum (2.4 miles east) and Bognor Regis War Memorial Hospital (2.8 miles east).