West Sussex · England

External Mastic in Cocking Causeway

Sealing brickwork movement joints, render, cladding and façade joints for homes and businesses in Cocking Causeway and across West Sussex. Fully insured, ARBOMaster approved and guaranteed for a year.

  • Joints with sealant missing in places
  • Failed sealant between panels on a façade
  • Sealant that has lost its bond to the brick or render

Book external mastic in Cocking Causeway

Questions from Cocking Causeway

Do you cover smaller places like Cocking Causeway?

Yes, Cocking Causeway is covered. We work across London and the South East, from towns to the smallest places. Longer journeys are simply planned in advance.

What guarantee comes with external mastic in Cocking Causeway?

Every job comes with our 12-month guarantee, wherever it is. We’re also fully insured and ARBOMaster approved.

What’s an expansion joint in brickwork?

A movement joint is a planned break in the wall that absorbs expansion and shrinkage. It’s sealed with a flexible sealant, not mortar.

Can you reach joints on upper floors?

It depends on the height and the site. Ground-floor joints are simple; for higher work, tell us about the building and we’ll confirm what’s needed.

Can landlords and businesses book you?

Yes, often. Several properties can be quoted together, and between tenancies is a good time for the work.

How long does external mastic take?

Typically it takes a few hours for a handful of joints, longer for a whole elevation. Bigger jobs take longer, and we’ll say how long yours will take.

Can you seal over the old sealant?

No. Fresh sealant does not stick to old sealant, and anything trapped underneath, including mould and water, stays there. It all has to come out first.

I rent my home. Can I book you?

Yes, but check with your landlord or agent first. Landlords are often happy for the work to be arranged.

About our external mastic in Cocking Causeway

For buildings in Cocking Causeway, we reseal external joints of all kinds, from brick movement joints to cladding panels. Every joint gets the same careful preparation: clean, sound faces and a controlled depth. Common call-outs are for brick movement joints where the sealant has split and sealant pulling away from one side of the joint, on brickwork movement joints, copings & trims and façade panels.

Around Cocking Causeway, older buildings can be stone, brick or timber-framed, many with extensions added later. The joints where those materials meet are the weak points.

A one-year guarantee comes as standard, so you are not left on your own once the job is done.

Location
Cocking Causeway (GU29)
Region
West Sussex
Cover
12 months on all our work
Quote
Quoted before any work starts
Telephone
0345 464 0079
Page updated
26 October 2026
The Mr Mastic team in navy uniforms in front of three Mr Mastic vans

Quotes for external mastic in Cocking Causeway

The quote reflects the job in front of us. We look at:

  • The product the joint needs
  • Access and height
  • The amount of work
  • When we can work, for business premises

We don’t show prices on the website, because the cost depends so much on the job itself. Call for a quick quote and we’ll talk you through it.

Helping us quote

To make quoting easier, please include:

  • Access, such as stairs, a lift or height
  • Any previous sealing or DIY work
  • A few photos by email, if you can
  • If it’s domestic, commercial or a hotel

Every job is quoted individually, so start by telling us what you need. Simply phone 0345 464 0079 or email us and describe the job and send pictures if you have them.

Different surfaces, different methods

Copings and trims

A failed coping joint lets water into the top of the wall. Resealing them is a small job that protects a lot.

Render joints

Render is weaker at the surface than brick, so a low-modulus sealant is kinder to the joint edges. We prime where the product needs it.

Should I try it myself first?

Some jobs are best left to a professional: work at height, external movement joints, fire-rated sealant and large areas call for the right materials, safe access and experience.

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, then guaranteed for a year.

When to call us in Cocking Causeway

Joints sealed without backing rod, or far too deep, rarely last. If the sealant sticks to the back as well as the sides, it can’t stretch and tears as soon as the joint widens.

The most common problems we see are:

  • Panel joints letting water in
  • Weathered mastic that no longer stretches
  • Rain getting behind render or cladding at a joint
  • Brick movement joints where the sealant has split

If you look after a building such as Midhurst CofE Primary School, larger buildings have long runs of movement joint that eventually need resealing.

Comparing quotes

  • What guarantee comes with the work
  • How the joint is cleaned and prepared
  • What the quote includes, VAT included or not
  • What product goes in the joint

Choosing a sealant specialist

What external mastic looks like in Cocking Causeway

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. Historic houses like Cowdray House (about 1.2 miles north) are a reminder that the area around Cocking Causeway has older buildings as well as new. Where a home is older, older walls and rooflines need a sealant that moves with them and suits the material.

In the older streets around The Parish Church of St Mary Magdalene, older walls, gutters and the joints where extensions meet them need a flexible sealant.

Cocking Causeway is about 9 miles east of Petersfield, in West Sussex. Jobs in Cocking Causeway get the same care as everywhere else we work: the old material taken out, joints prepared properly and a 12-month guarantee. We cover 371 towns and villages across West Sussex, large and small. There’s also a page for Portsmouth, about 19 miles away.

We cover every part of GU29 for external mastic and the streets around it. Local streets include Oaklands Lane and Well Lane, and we cover them all. We also cover the places around Cocking Causeway: West Lavington (1 mile north-east), Midhurst (1 mile north), Bepton Common (1 mile north-west), Heyshott Green (1 mile south-east) and Cocking (1 mile south). We also work in nearby towns such as Bognor Regis (13 miles south), Chichester (9 miles south), Littlehampton (14 miles south-east), Emsworth (12 miles south-west), Rustington (15 miles south-east) and Storrington (13 miles east).

Around Cocking Causeway

Locally, jobs take us to homes and businesses close to St Margaret's Convent, The Royal Oak Public House and Midhurst Rother College. A little further out are Lodsworth Castle (3.1 miles east) and Midhurst Community Hospital (1.5 miles north). Green spaces nearby include Levin Down and Iping and Stedham Commons.

Map of Cocking Causeway © OpenStreetMap contributors

Why it’s worth doing now in Cocking Causeway

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’s worth doing right. Where a wall is exposed, as many are in small places like Cocking Causeway, wind-driven rain gets into any failed joint, and older walls, once damp, take a long time to dry.

No two jobs are quite the same, so we quote each one individually. The number of joints, how easy they are to reach and the sealant needed all make a difference.

What you get with us

  • Sanitary silicone with an anti-fungal additive in wet areas
  • 4.9 on Google from 180+ five-star reviews
  • A 12-month guarantee on all work
  • We agree the colour with you first

See our cost guide and our reviews.

The process

When we arrive, we start by going over the job with you, so you know exactly what we are doing. Surfaces next to the work are protected before any work begins. Most jobs take a few hours to a few days, depending on the length of joint and the access. Somewhere like Cocking Causeway 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.

  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. Primer is applied wherever the sealant needs it.
  5. A low-modulus exterior sealant is gunned in and tooled to a neat finish.

Preparing for the visit

  • Mention any tricky access
  • Tell us about any previous sealing or DIY attempts
  • Let us know about parking restrictions

How to get a quote

If you are in Cocking Causeway and need external mastic, call 0345 464 0079 or email us. A short description of the job and where it is helps us quote, and you will get a clear quote before any work starts.

Get a quick quote

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Landlord and commercial work in Cocking Causeway

For anyone letting property in or around Cocking Causeway, jobs at different addresses can go on one quote. Just tell us the addresses and what each one needs, and photos by email help.

Housing providers, facilities teams and property managers book us too in Cocking Causeway and across West Sussex. We can quote a run of properties together, and we’re fully insured for the work.

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