The Mastic Doctor team standing beside their branded vans outside an office building
West Sussex · England

Barnham expansion joint sealing

Expansion and movement joint sealing in walls, decks and floors throughout Barnham and nearby, by CSCS-carded applicators. Fully insured and CHAS accredited.

  • Weathered movement joint sealant that no longer flexes
  • Sealant pulling off the joint face
  • Leaks through car park deck joints onto the level below
1
Send details
Drawings, photos, a joint schedule or a site visit.
2
Get a quote
A fixed quote for the work, with the scope in writing.
3
We seal
The right sealant, to the right depth, neatly finished.
4
Guaranteed
Our workmanship is guaranteed for 12 months.
South East, London & Scotland
CHAS & Constructionline
Fully insured: £5m PL

Need expansion joint sealing in Barnham?

Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.

What we can’t put right

We seal joints; we don’t mend everything behind them. On its own, sealant can’t deal with:

  • A joint that has to be widened or re-detailed before it can work
  • Damaged metal nosings or cover plates over a joint
  • Leaks coming from the membrane rather than the joint seal

If you are not sure, just call the office on 01277 525 020 or email us and we’ll give you a straight answer.

Joints and surfaces we work on

  • Car park decks and ramps
  • Podiums and floor movement joints
  • Blockwork control joints
  • Cladding panel joints
  • Precast concrete panel joints
  • Brickwork movement joints

Expansion joint sealing in Barnham

Joints in car park decks and ramps are among the hardest-working in any building. Wheel loads, grit and de-icing salts attack the seal and the concrete either side, so failed seals soon lead to leaks onto the level below and broken edges. We reseal deck and ramp joints with a trafficable sealant chosen for the movement. Site teams most often ask us about brittle, chalky sealant on external joints and joints packed with grit and debris, on blockwork control joints, brickwork movement joints and precast concrete panel joints. One point of contact handles commercial sealant work in Barnham from the first photographs to the final walk-round, whether it’s one building or several.

Jobs around smaller places like Barnham are planned so the whole job is done in one visit, with the right materials on hand. Note joint widths and the traffic that uses them, and we will take it from there.

We sign every job off with a 12-month guarantee. The promise is simple: if the work we did fails within twelve months, we return to fix it.

Place
Barnham (PO22)
Region
West Sussex
Cover
12 months on every job
Quote
Quoted before any work starts
Call
01277 525 020
Updated
3 November 2026
The Mastic Doctor team beside their liveried vans in front of an office building

Questions we’re asked in Barnham

Can being near the sea in Barnham affect the sealant we need?

It can. Coastal exposure works external joints harder than inland weather. That puts more weight on product choice, primers where the manufacturer specifies them, and correct joint sizing.

Can you work at a site such as Sussex Business Village, by Barnham?

Yes. Estates, retail parks and business parks around Barnham, Sussex Business Village among them, are all within reach. To start, just ring 01277 525 020 or email the details over with the unit, the joints involved and your access times.

What’s the difference between an expansion joint and a movement joint?

It’s a deliberate gap that lets the structure move without cracking. Many people call it an expansion joint.

Why has the sealant in our expansion joints split?

The common causes are poor preparation, three-sided adhesion, the wrong movement class and weathering. We diagnose which one it is before resealing since each needs a different fix.

How do we ask for a quote?

There are four steps: send details, receive a fixed quote, we carry out the work, and it’s guaranteed. Step one needs little more than photos and a postcode.

Do you use silicone or polyurethane in movement joints?

The right product depends on the joint. Facades often take a low-modulus silicone; floors and decks typically need a polyurethane.

Are you insured?

Yes. Our insurance certificate can be sent alongside the quote.

Our process

Before we leave any area, the masking comes off, the area is cleaned and every joint is checked, ready for your sign-off. If an area should be left alone while the sealant cures, we say how long and put signs out. Rural sites near Barnham may need directions, gate codes or a contact on site. Add it to your enquiry and we’ll build it into the plan.

  1. First, the joints are inspected for width, movement and the type of failure.
  2. A fixed quote follows, naming the sealant and its movement class.
  3. The failed seal is removed and both faces are cleaned until sound and dry, and we tell you if any edges need repairing first.
  4. Closed-cell backing rod is set to depth, or bond-breaker tape in shallow joints.
  5. Primer goes on where the manufacturer specifies it, followed by the sealant, which is then tooled off.
  6. Each joint is inspected and handed over with our 12-month guarantee.

Getting the site ready

  • Let building users know which areas are affected
  • Flag any permit to work we’ll need
  • Confirm the product named in the specification

Get a fixed quote

Specifications, drawings and tender packages are welcome with any enquiry, and we will price the work to it. For smaller jobs, photographs and a description will do.

Get a price

Read more

Expansion joint sealing around Barnham: how the place shapes the job

Barnham sits close to the coast, within about 3 miles. Open joints in coastal car parks and yards let in salt-laden water as well as grit, and edges left open tend to break up faster. At about 52 miles from central London, Barnham is within reach of the capital. The roads out of London are lined with trade parks and distribution sheds.

Hospitals like Bognor Regis War Memorial Hospital, 3.2 miles south-west of Barnham, have multi-storey or surface car parks whose joints carry vehicles round the clock. Office parks like Sussex Business Village, 0.6 miles to the east of Barnham, have decks, ramps and clad elevations whose joints take movement every day.

Barnham is about 4 miles north-east of Bognor Regis, in West Sussex. If you’re looking for expansion joint sealing in Barnham, we can help, as we do across West Sussex. Barnham is one of 373 places in West Sussex on our list. Sites around Portsmouth have their own page, about 19 miles away.

We cover the PO22 postcode districts for movement joints. If your site is on Garden Crescent, Dollery Road and Goodacres or close by, we can quote for movement joints. Close to Barnham, our area also takes in West Barnham (1 mile north-west), Walberton (1 mile north-east), Yapton (1 mile south-east), Eastergate (1 mile north-west) and Lidsey (1 mile south-west). Bigger towns within reach include Worthing (10 miles east), Bognor Regis (4 miles south-west), Chichester (6 miles west), Selsey (9 miles south-west), Littlehampton (5 miles east) and Lancing (14 miles east).

What’s near Barnham

Around Barnham, our work takes us to commercial buildings near The Murrell Arms and St Philip Howard Catholic High School. Barnham has its own railway station: Barnham station. Nearby you’ll also find Bognor Regis War Memorial Hospital (3.2 miles south-west) and Tote Copse Castle (2.5 miles west). Open spaces near Barnham include WWT Arundel.

Map of Barnham © OpenStreetMap contributors

How the job changes by surface

Podium joints

Podium joints often sit within a waterproofing system. We reseal the joint where sealant is the specified fix.

Car park decks and ramps

Car park joints are some of the hardest-working joints in any building. A trafficable sealant suited to the movement goes in.

Should maintenance staff do it?

Using site staff can make sense for a small touch-up, but larger jobs are different: a specialist brings efficiency, a consistent finish and a 12-month guarantee.

Certain joints really need a specialist: for example fire-rated seals that must match a tested detail, trafficked floor joints and external movement joints. A poor seal in places like these tends to cost more to put right later.

When to call us in Barnham

Repeated failure often traces back to the wrong product. A stiff or general-purpose sealant across a joint with large movement won’t cope. BS EN ISO 11600 classifies building sealants by movement capability.

What tends to prompt an enquiry:

  • Hardened, cracked sealant on exposed facades
  • Car park joints leaking onto vehicles below
  • Layers of sealant in a movement joint
  • Arrises breaking up along floor joints

Campuses like University of Chichester (Bognor Campus) (to the south-west of Barnham) mix old and new buildings, with movement joints wherever they meet.

Before you book anyone

  • Their approach to joint depth and backing
  • Can the work be phased to keep areas open?
  • Are they CHAS accredited or on Constructionline?
  • How the existing material will be dealt with

Our contractor checklist

Why it’s worth doing now in Barnham

Sealing over a failed movement joint is a common shortcut. A bead over the old seal can’t bond or flex, so it fails quickly. We cut out the old seal and prepare the faces every time. Older rural buildings around Barnham move with the seasons, and rigid or tired sealant can’t keep up. A sealant with the right movement capability, correctly sized, lasts far better.

Quantities, awkward access and phased working all shape the price. So do site requirements such as inductions and permits.

What you get with us

  • A range of standard colours, depending on the product
  • A fixed quote before work starts
  • 12-month guarantee on workmanship
  • One phone line for London, the South East and Scotland

Take a look at our cost guide or how we’re accredited.

Accreditations

Trusted. Accredited. Insured.