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

Colworth expansion joint sealing

Expansion and movement joint sealing in walls, decks and floors in Colworth. CHAS accredited and fully insured, with a 12-month guarantee.

  • Layers of sealant in a movement joint
  • Expansion joints split through the centre of the bead
  • Damp inside where a wall movement joint has failed
1
Send details
Photos, drawings or a schedule, or we visit.
2
Get a quote
A fixed price, with what’s included set out clearly.
3
We seal
CSCS-carded applicators, the right product for each joint.
4
Guaranteed
Our workmanship is guaranteed for 12 months.
London, the South East & Scotland
CHAS & Constructionline
£5m public liability

Expansion joint sealing for businesses in Colworth

Tell us what needs sealing and where, with photos or drawings if you have them, and we’ll price it.

Joints that move: notes for Colworth

Colworth lies within about 3 miles of the sea. Coastal yards and decks give their joints salt and wet weather to deal with, not just wheels, which is why split joints are worth sealing before the edges deteriorate. Central London is about 54 miles from Colworth. The South East has large numbers of industrial estates and warehouses along the motorway corridors.

Across sites such as Saltbox Business Park., 1.7 miles to the south-east of Colworth, floor and movement joints can be sealed in phases so units keep working. Business parks such as The Woodhorn Business Centre (1.1 miles north of Colworth) have car parks, paved areas and long brick and panel elevations, all with movement joints.

Colworth is about 2 miles north of Bognor Regis, in West Sussex. Looking for expansion joint sealing in Colworth? We can help. Colworth is one of 373 places we cover in West Sussex for movement joints. Portsmouth is covered too, some 16 miles away.

Business premises anywhere in PO20 are within our area. Just outside Colworth, we also work in Merston (1 mile west), Oving (2 miles north-west), Lagness (2 miles south-west), Runcton (2 miles west) and Shopwyke (2 miles north-west). A short drive away, we cover Worthing (13 miles east), Chichester (4 miles north-west), Selsey (7 miles south-west), Littlehampton (8 miles east), Rustington (9 miles east) and Storrington (13 miles north-east).

Around Colworth

Around Colworth, our work takes us to commercial buildings near The Regis School and The Brooks Local Nature Reserve and the streets around them. Colworth’s nearest station is Bognor Regis station, about 2.5 miles south-east. Well-known places in the area include Bognor Regis Museum (2.7 miles south-east) and Tote Copse Castle (1.3 miles north-east).

Map of Colworth © OpenStreetMap contributors

Expansion joint sealing in Colworth, done properly

Floor movement joints in warehouses, retail and public buildings carry wheeled traffic. Without a sound filler, joint edges chip and spall under load. If the arrises are already broken, we will say so before sealing and phasing can keep areas working. We work on brickwork movement joints, precast concrete panel joints and podiums and floor movement joints, and the failures we are asked to look at most are movement joints with split or torn sealant and rain penetration at brick or block movement joints. Looking for mastic applicators who cover Colworth? Mastic Doctor has worked for contractors, FMs and building owners since 2005, with CSCS-carded applicators.

Jobs around smaller places like Colworth are planned so the whole job is done in one visit. Tell us the joint widths if you can, and what drives or walks over them.

The 12-month guarantee is for workmanship rather than wear and tear. Sealant wears with time, and movement, weather, cleaning and use decide how fast, so we’re clear about what is covered before work starts.

Mastic Doctor team members lined up next to their branded vans outside an office building
Where
Colworth (PO20)
Region
West Sussex
Guarantee
12 months on every job
Quote
Quoted before any work starts
Call
01277 525 020
Updated
3 November 2026

Doing it in-house

For a quick touch-up, site staff may be fine, but larger jobs are different: a specialist works through quantities efficiently, leaves a consistent finish and backs it with a 12-month guarantee.

A short, simple internal joint is often within reach of a maintenance team. Where it goes wrong is preparation: sealing over old material, sealing onto damp or dusty surfaces, or a product that can’t take the movement.

What sealant work can’t fix

Not every problem is a sealant problem, and we’d rather tell you before you spend money. It won’t fix:

  • Concrete or masonry repairs along the arrises
  • Damaged metal nosings or cover plates over a joint
  • A joint that has to be widened or re-detailed before it can work

Not sure which it is? You can give us a call on 01277 525 020 or send details through our quote form and we’ll tell you honestly.

Where we work in Colworth

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

Our process

In a busy building, we agree a sequence with your contact so the disruption stays in one area at once. Each section is protected, cleaned back and sealed, then reopened once the sealant allows before the next one starts. If others near Colworth need work, visits can be combined, which keeps travel down. You will have a fixed quote before work starts.

  1. The first job is to check each joint: how wide it is, how it moves and why the old seal let go.
  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, flagging any broken edges that need repair before sealing.
  4. Backing rod goes in at the right depth, or bond-breaker tape where the joint is shallow.
  5. After any primer the maker requires, the bead is applied and tooled so it grips two sides only.
  6. Each joint is inspected and handed over with our 12-month guarantee.

What we need from you

  • Have the specification and drawings to hand
  • Warn occupants and staff about the work
  • Point out parking and an unloading spot

Quotes

Send details, get a quote, we seal, guaranteed: that’s how every job runs. To take the first step, ring 01277 525 020 or email drawings and photos.

Ask for a quote

Related advice

Do you need expansion joint sealing in Colworth?

Sun, rain and frost age external movement joints. UV hardens the surface, and the sealant loses its ability to stretch, so it can’t follow the movement any more.

If one of these sounds familiar, it’s time for a closer look:

  • Chipped joint edges on forklift routes
  • Hardened, cracked sealant on exposed facades
  • Rain penetration at brick or block movement joints
  • Sealant pulling off the joint face

At a retail site such as Arun Retail Park, 2.1 miles south-east of Colworth, trolleys, cages and cars run over floor and slab joints all day.

What to look for in a quote

  • How joint depth will be controlled
  • Will RAMS and insurance details be available?
  • Whether old or failed sealant will be cut out, not overlaid
  • Who will actually carry out the work

How to choose a sealant contractor

After the work

Problems stay small when the joints are checked regularly. In particular:

  • Treat a small split as a warning, not a cosmetic issue
  • Keep traffic off new joints until the cure time is up
  • Plan racking layouts so feet don’t land on a joint
  • Look over external and deck joints after a hard winter

Snow ploughs and scrapers catch on joint lines. Lifting the blade at each joint avoids tearing the bead, and it’s worth checking joints once the cold weather has passed.

An open joint fills with grit, and a joint full of grit can’t close. The edges then take the pressure and start to spall and the reseal becomes an edge repair as well. A sound seal keeps the joint working.

FAQs: Colworth

Our building in Colworth is near the coast: does that change the sealant?

It can. Driven rain and salt are tougher on outside sealant than sheltered inland conditions. We choose the product for the exposure, prime where the manufacturer requires it and size the joint for its movement.

Do you cover business parks and estates near Colworth, such as The Woodhorn Business Centre?

Yes. We cover Colworth and the area around it, including industrial estates, business parks and retail parks such as The Woodhorn Business Centre. Photos and a short description are enough for a first look.

How soon can the area be used again?

The product and site conditions decide that. Some take light use quickly, others need longer to cure, and we confirm it before leaving site.

Are expansion joints and movement joints the same thing?

The terms overlap a great deal. Both let materials grow and shrink with temperature, moisture and load.

Will you just go over the old sealant?

No. We cut the old material out and clean the joint back before sealing, since fresh sealant will not bond reliably to aged material.

Do you take on multi-site work?

Yes. A group of buildings can go on one quote, and you deal with one contact throughout across South East England, Greater London and Scotland.

What about RAMS and site documents?

Tell us what site paperwork you need (RAMS, insurance certificate, CSCS details) and we’ll confirm with the quote.

Quoting for work in Colworth

Sealant work doesn’t have a standard rate, since sites vary so much. What we look at:

  • Specialist products, such as fire-rated or hygienic sealants
  • The size and state of each joint
  • Distance, for remote addresses
  • Any access equipment needed

What a job costs comes down to how many linear metres there are, how much old material needs removing and the access. Call for a fixed quote when you are ready.

What we need to price the job

Diagnosis starts before we arrive. Let us know:

  • The site address and postcode
  • Whether the building will be occupied during the work
  • How the joints are reached, and at what height
  • Specification clauses that apply

A handful of photographs and a postcode is the fastest way to a quote. Send them through the quote form, or speak to us on 01277 525 020 or email drawings and photos if you’d rather talk the job through.

Accreditations

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