West Sussex · England

External & façade joints in West Wittering, West Sussex

External mastic for West Wittering, by sealant specialists with 20+ years’ experience. 180+ five-star Google reviews and a 4.9 rating.

  • Brick movement joints where the sealant has split
  • Damp patches traced to an open external joint
  • Sealant pulling away from one side of the joint

Book external mastic in West Wittering

External mastic in West Wittering, done properly

On houses, flats and commercial buildings across West Wittering, we reseal joints in brickwork, render, cladding and façade panels. The preparation is the same whatever the wall: clean joint faces and the right depth. We work on copings & trims, concrete & block and façade panels, and common reasons people get in touch are joints with sealant missing in places and plants rooting in failed movement joints.

External sealant needs dry, clean surfaces, so work around West Wittering is planned for dry weather. Tell us about access to all sides of the building, including outbuildings and garages.

All our work is covered by a one-year guarantee.

Location
West Wittering (PO20)
Wider area
West Sussex
Guarantee
One year on every job
Quotes
A clear quote up front
Telephone
0345 464 0079
Last updated
26 October 2026
Eleven members of the Mr Mastic team standing in front of branded white vans

When to call us in West Wittering

Joints sealed without backing rod, or far too deep, rarely last. If the sealant sticks to the back as well as the sides, it cannot stretch and rips as the joint opens.

Most people get in touch when they notice one of these:

  • Gaps where render, brick and frames meet
  • Sealant that has lost its bond to the brick or render
  • Failed sealant between panels on a façade
  • Brick movement joints where the sealant has split

For an older house near a landmark such as The Parish Church of St Peter and St Paul, an extension built onto an older house moves differently, and the joint between them takes the strain.

What your quote should include

  • How the surfaces are prepared before sealing
  • Whether VAT is included
  • Which colour the sealant will be
  • What insurance they hold

How to choose a mastic man

Why act early in West Wittering

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. Where a wall is exposed, as many are in small places like West Wittering, wind-driven rain gets into any failed joint, and damp in older walls is slow to dry out.

Rather than a set price list, we look at what your job involves: the amount of work, the old material and the access. You will know the price before we begin.

Why book with us

  • ARBOMaster approved applicator
  • We agree the colour with you first
  • Homes, businesses and hotels
  • Quality sealants from Arbo and Everbuild

See how sealant jobs are priced and customer reviews.

What happens on the day

Once we are on site, we check the joints match what you told us. If anything is different, we explain it before carrying on. Most jobs then take a few hours to a few days, depending on the length of joint and the access. For a village or hamlet like West Wittering, the journey is planned in advance: tell us about narrow lanes, gates, long drives and where we can park. We bring what the job needs, so it can be finished in one trip where possible.

  1. Each joint is checked and the colour of the new sealant agreed.
  2. Failed sealant is removed back to clean, sound faces.
  3. Closed-cell backing rod is pushed in so the sealant bonds to two sides only.
  4. We prime the faces where required.
  5. A low-modulus exterior sealant is gunned in and tooled to a neat finish.

Before we arrive

  • For business premises, tell us about site rules or sign-in
  • Let us know about earlier repairs to the joints
  • Where the joints are inside, avoid wetting them before we arrive

Getting a quote

For a quote, ring 0345 464 0079 or email us with the location and a short description of the problem. You’ll have a clear quote before any work starts.

Get a quick quote

Related advice

Should I try it myself first?

The difference is mostly in the preparation and the product. Joints are cleaned back to sound surfaces and dried, and the sealant is matched to the joint and its conditions, and the work is guaranteed for a year.

A careful DIYer can reseal a simple joint, such as a straightforward joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.

For landlords and businesses

Businesses can book us for washrooms, kitchens, offices and more. For commercial premises, we can talk through working times when we quote.

Landlords and agents in West Wittering can book us as well as homeowners. Resealing between tenancies is a simple way to keep a property in good order before the next move-in.

What external mastic looks like in West Wittering

West Wittering is close to 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.

For landlords with property near Nutbourne station, split movement joints are easy to miss on a rental until damp shows inside. If you look after a building such as West Wittering Parochial Church of England School, movement joints, cladding joints and gutters on larger buildings need the same care as a house’s.

West Wittering is about 6 miles north-west of Selsey, in West Sussex. Whether you are in the middle of West Wittering or further out, external mastic is available for homes and businesses alike. West Wittering is one of 371 towns and villages in West Sussex we cover. Portsmouth is on our list too, about 8 miles from West Wittering.

Work in PO20 works the same way as everywhere else we cover. We cover properties on Royce Way, Elmstead Gardens and Locksash Close. We also cover the places around West Wittering: East Wittering (2 miles south-east), Shipton Green (2 miles north-east), Somerley (2 miles east), Earnley (2 miles east) and Birdham (3 miles east). Within a short drive, we also cover Bognor Regis (9 miles east), Chichester (6 miles north-east), Selsey (6 miles south-east), Emsworth (5 miles north), Portfield (7 miles north-east) and Yapton (13 miles east).

Near you in West Wittering

Around West Wittering, our work takes us to homes and buildings near The Wittering pub and the streets around them. The nearest railway station is Nutbourne station, roughly 4.6 miles north. For a walk, there’s Pilsey Island.

Map of West Wittering © OpenStreetMap contributors

Looking after it afterwards

So the new joints stay in good condition:

  • Don’t let climbing plants root in the sealant
  • Have failed joints looked at early
  • Make sure movement joints are not pointed over
  • Deal with leaking gutters that soak the joints below

Keep pressure washers away from the sealant. A strong jet can damage the edges of the bead over time.

Gaps, plants or missing sealant in a joint are worth getting looked at. Earlier resealing means a smaller job and a better result.

West Wittering: your questions answered

Does the coastal weather in West Wittering affect outside sealant?

Coastal weather is harder on outside sealant: there’s more wind-driven rain and, closer to the shore, salt in the air. The right product, a clean joint and the right depth all help it cope.

Do you work for landlords with property near Nutbourne station?

Yes. We work for landlords and letting agents as well as homeowners. You can ring 0345 464 0079 or drop us an email with the details for a clear quote.

What’s an expansion joint in brickwork?

It’s a deliberate gap that lets the wall expand and contract without cracking. It should be filled with flexible sealant, never mortar.

Do you work for hotels and businesses?

Yes. Commercial and hotel work is a large part of what we do. Working times can be discussed when we quote.

Are you an approved applicator?

Yes. ARBOMaster is the approved applicator scheme for Arbo sealants, and we’re part of it.

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.

Is there a guarantee?

Yes. Each job is guaranteed for twelve months, wherever you are.

Is there any odour?

Sometimes, a little. Any smell clears as the sealant cures.

How we quote for external mastic

For a quick quote, just ask. What matters most is:

  • The number and length of the joints
  • The type of sealant required
  • How many areas need sealing
  • Mould in or behind the old joints

Every job is a little different, so each one gets its own quote. The number of joints, how easy they are to reach and the sealant needed all make a difference.

What to tell us for a quote

Photos by email are helpful but not essential. Please mention:

  • If it’s domestic, commercial or a hotel
  • Access, such as stairs, a lift or height
  • The problem you’ve noticed
  • Photos by email, if that is easy

There’s no standard price list, as no two jobs are quite the same. Instead, your job gets its own clear quote. To arrange one, ring 0345 464 0079 or send us an email.

20+ yearsMastic and sealant specialists
ARBOMaster approvedApproved applicator for Arbo sealants
Fully insuredDomestic, commercial and hotels
One-year guaranteeOn every job