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

Expansion and movement joint sealing in Crawley, Hampshire

Sealant work in Crawley for main contractors, managing agents and facilities managers: expansion and movement joint sealing in walls, decks and floors, quoted at a fixed price.

  • Previous reseals laid over old sealant
  • Joints packed with grit and debris
  • Joints where the bead has lost adhesion
1
Send details
Send the specification, photos or a marked-up plan.
2
Get a quote
Scope agreed and priced before anything starts.
3
We seal
Prepared joints, the specified product, a tidy finish.
4
Guaranteed
Signed off, with 12 months’ guarantee.
Covering the South East & Scotland
Constructionline member
£5m PL insurance

Expansion joint sealing for businesses in Crawley

Photos, a specification or a quick description of the joints is enough to start a fixed quote.

Expansion joint sealing for commercial buildings in Crawley

Internal floor joints take trolleys, pallet trucks and forklifts. Unsupported edges break up under wheels. If the arrises are already broken, we will say so before sealing, and phased work keeps areas in use. We work on blockwork control joints, cladding panel joints and brickwork movement joints, and the failures we’re asked to look at most are layers of sealant in a movement joint and chipped joint edges on forklift routes. Looking for mastic applicators who cover Crawley? Mastic Doctor has worked for contractors, FMs and building owners since 2005, with CSCS-carded applicators.

Halls, schools and small commercial buildings near places like Crawley have movement joints in brick, block and concrete too. They tend to be overlooked until something leaks or cracks.

Our workmanship is guaranteed for 12 months, in Crawley as everywhere else we work. If our installation lets you down in that time, we return and fix it.

Mastic Doctor team members lined up next to their branded vans outside an office building
Where
Crawley (SO21)
Wider area
Hampshire
Cover
A 12-month guarantee
Quotes
Fixed quote, scope in writing
Call
01277 525 020
Page updated
3 November 2026

How a job runs

A typical day starts with protection: masking tape along the joint edges and sheeting over anything nearby. On site, the work normally takes a few hours to several weeks, depending on how many metres of joint there are and how much old sealant or filler needs removing, and our waste is bagged and taken away as we go. If others near Crawley need work, visits can be combined, which keeps travel down. A fixed quote is given before anything starts.

  1. First the joints are inspected, widths measured and the type of failure noted.
  2. A fixed quote names the sealant we propose and its movement class.
  3. Phasing is agreed so decks, floors or entrances can stay in use where needed.
  4. We strip the old sealant or filler and prepare each face until it’s sound and dry.
  5. Backing rod or bond-breaker sets the depth, primer goes on where specified, and the sealant is applied and tooled.
  6. We check each joint with you, confirm the cure time and sign off under our 12-month guarantee.

Before we start on site

  • Tell us your opening times and when work is allowed
  • Tell us which areas need to stay in use
  • Tell staff and tenants when we’ll be in

Ask for a quote

Need a figure for a tender or a budget? Send the scope and any drawings, and we will return a fixed quote you can plan around. If you have questions first, call 01277 525 020 or email a schedule or drawings.

Ask for a quote

Read more

Common questions from Crawley clients

Is Crawley too small for you to travel to?

No. Places such as Crawley are covered as much as the big towns. London and every South East county are within our area. Good photos up front let us bring everything on the first visit.

Does your area include sites such as Beeches Industrial Park, near Crawley?

Yes. We cover Crawley and the area around it, including industrial estates, business parks and retail parks such as Beeches Industrial Park. Send details of the unit and the work through our quote form for a quick quote.

Are your applicators CSCS-carded?

Yes. We use CSCS-carded applicators.

Do the joint edges need to be sound before sealing?

Broken arrises have to be put right before resealing, and we’ll point out where that’s the case. Sealing over them leads to early failure.

Can you work to our specification?

Yes. We follow the specification, along with the manufacturer’s installation guidance, and any queries are raised before we start.

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

Put simply, it’s a planned break in a wall, slab or deck so the materials can move. Many people call it an expansion joint, and either way it needs a sound seal.

How long will the joint resealing take?

The metres of joint, the access and the amount of removal decide it. As a guide, it typically takes a short visit for a handful of joints, or several days or more for a car park deck or long runs of facade joints.

Warehouse floors and decks around Crawley

The South East is one of the drier parts of the UK. Outside joints in yards and car parks still have to be dry before sealing, and gritting in cold spells finds its way into open joints. Crawley has two named business or industrial parks inside a 3-mile radius. Sites like these are full of saw-cut floor joints, yard slabs and car park joints.

A campus such as University of Winchester, 4.6 miles to the south-east of Crawley, has long runs of movement joint in its buildings, decks and paving. If you manage units on an estate such as Beeches Industrial Park, which lies south-east of Crawley, the floor joints under forklifts and pallet trucks and the slab joints in the yard are the ones to watch.

Crawley is about 5 miles north-west of Winchester, in Hampshire. We cover Crawley, and jobs here get the same fixed quote and 12-month guarantee as anywhere else. Across Hampshire, 723 places are covered, Crawley among them. We also cover Southampton, around 13 miles from Crawley.

Work on movement joints is covered throughout SO21, whatever the building. Just outside Crawley, we also work in Worthy Down (3 miles east), South Wonston (3 miles east), Sutton Scotney (4 miles north-east), Barton Stacey (4 miles north) and Springvale (4 miles east). Further afield, our area takes in Winchester (5 miles south-east), Eastleigh (10 miles south), Andover (8 miles north-west), Totton (14 miles south), Chandler's Ford (9 miles south) and Hedge End (14 miles south).

Around Crawley

Around Crawley, our work takes us to commercial buildings near Fox And Hounds Public House. The closest station to Crawley is Winchester station, about 4.5 miles south-east of the centre. Nearby you will also find Winchester Castle (4.8 miles south-east) and Royal Hampshire County Hospital (4.5 miles south-east). The countryside around Crawley includes Winnall Moors.

Map of Crawley © OpenStreetMap contributors

How the job changes by surface

Joints between different materials

Hybrid or MS polymer sealants bond to many substrates. The choice depends on the substrates and how much the joint moves, and confirm it in the quote.

Concrete and precast panel joints

Concrete edges can be weak or carry release agents that stop adhesion. We prepare the faces thoroughly and prime where the maker calls for it and check the edges for soundness as we go.

Do you need expansion joint sealing in Crawley?

When the movement exceeds the sealant’s capability, the bead tears. A joint that’s too narrow for the movement, or a product with the wrong movement class, will split through the middle. The same product in the same joint tends to fail again, so we check width and movement before quoting.

Clients usually get in touch after noticing something like this:

  • Expansion joints split through the centre of the bead
  • Sealant peeling off one face of the joint
  • Weathered movement joint sealant that no longer flexes
  • Damp inside where a wall movement joint has failed

Phasing is what makes joint work possible on busy sites such as Balldown Business Centre (1.4 miles south of Crawley): one bay, aisle or car park row at a time.

Before you book anyone

  • Their approach to joint depth and backing
  • The named product and why it was chosen
  • Whether primer will be used where the manufacturer specifies it
  • How they’ll work around occupants

Questions to ask before you appoint anyone

Cost factors for movement joints

What shapes the price:

  • Any access equipment needed
  • Whether old sealant has to be cut out first
  • Which sealant the job calls for
  • Phasing around occupants

Small jobs and large programmes are priced from the same things: scope, access, product and programme. Call for a quote and we’ll put a fixed figure on it.

Before you send an enquiry

The more we know, the firmer the quote. Helpful details to send:

  • Anything awkward about access or site hours
  • Where the site is, with the postcode
  • Approximate linear metres or a joint schedule
  • A wide shot and a close-up of the area

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

What happens if it’s left?

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. For buildings around smaller places like Crawley, water damage can go unnoticed for longer, especially where a building isn’t used daily, so a failed joint can leak for a while before anyone sees it. Renewing joints in good time avoids the problem.

Every site prices differently: joint size, product, access and site hours all play a part. Send the details and a fixed figure follows.

What you get with us

  • Work to your specification and the manufacturer’s guidance
  • Health and safety: CHAS accredited
  • Workmanship guaranteed for 12 months
  • Fully insured, including public liability cover

See our cost guide and our accreditations.

Work for main contractors and building owners

Hotels, schools, healthcare sites, offices and retail units book us directly too. The work is planned around how the building runs, so guests, pupils, patients or staff are disturbed as little as possible.

Agents, factors and owners’ representatives all follow the same route: send the details, accept a fixed quote, and we carry out and guarantee the work. We can agree access arrangements and keyholder contacts beforehand.

Accreditations

Trusted. Accredited. Insured.