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

Expansion and movement joint sealing in Crofton, Hampshire

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

  • Spalled or broken joint edges in floors and decks
  • Torn sealant in brick or block movement joints
  • Joints packed with grit and debris
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
CSCS-carded applicators, the right product for each joint.
4
Guaranteed
Signed off, with 12 months’ guarantee.
London, the South East & Scotland
Constructionline member
Fully insured: £5m PL

Expansion joint sealing in Crofton

Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.

Expansion joint sealing in Crofton, done properly

Every structure moves a little, all the time: they expand in the heat, shrink as they dry, and shift under load. Movement joints are where that movement is absorbed. Mastic Doctor reseals movement joints in brickwork, blockwork, concrete, cladding and floors. If you have hardened, cracked sealant on exposed facades and layers of sealant in a movement joint, we can put it right, on precast concrete panel joints, brickwork movement joints and car park decks and ramps alike. A specialist sealant contractor works differently from a general builder: on jobs in Crofton, preparation and product choice get the time they need.

Smaller community and commercial buildings around Crofton have their own movement joints in walls and floors. They tend to be overlooked until something leaks or cracks.

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 spell out the cover before we begin.

Mastic Doctor team members lined up next to their branded vans outside an office building
Where
Crofton (PO14, PO13)
Wider area
Hampshire
Cover
12 months on every job
Quotes
A fixed quote before we start
Call
01277 525 020
Last updated
3 November 2026

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 before the next one starts. Rural sites near Crofton may need directions, gate codes or a contact on site. Send that with the details and we’ll confirm the plan with the quote.

  1. The first job is to check each joint: how wide it is, how it moves and why the old seal let go.
  2. You get a fixed quote with the product and its movement capability stated.
  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. Closed-cell backing rod is set to depth, or bond-breaker tape in shallow joints.
  5. Where the maker calls for primer, it’s applied first, then the bead goes in and is tooled to a concave finish.
  6. Each joint is inspected and handed over with our 12-month guarantee.

Preparing the site

  • Move anything stored against the joints
  • Confirm the product named in the specification
  • Explain the parking and delivery arrangements

Get a fixed quote

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

Get a quick quote

Related advice

Building owners, agents and FMs in Crofton

FMs need a contractor who is easy to get on site. Tell us what site paperwork you need, such as RAMS, an insurance certificate or CSCS details, and we’ll confirm with the quote.

As a CHAS accredited contractor and Constructionline member, we make supplier vetting simple. We’re fully insured, and our insurance certificate can go with the quote.

What we can’t put right

A few problems need another trade or a different fix, and we say so rather than covering them up:

  • Crumbling edges that would give a new bead nothing sound to grip
  • Cracking or settlement that calls for an engineer’s assessment
  • Mechanical expansion joint covers, cover plates or proprietary joint systems (a specialist supplier’s job)

Not sure which it is? You can call the office on 01277 525 020 or send details through our quote form and we will tell you honestly before you book.

Where we work in Crofton

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

Cost factors for movement joints

The price varies from site to site. Expect it to depend on:

  • How accessible the joints are
  • Specialist products, such as fire-rated or hygienic sealants
  • The size and state of each joint
  • Removal of failed or old sealant

The work involved drives the cost: stripping out, preparation, sealing, access and phasing. Call for a fixed quote and we’ll explain how it’s made up.

What to include in your enquiry

To price the job accurately, we need a clear picture of the site. Send us:

  • Where the site is, with the postcode
  • Whether the building will be occupied during the work
  • Rough lengths or quantities, or drawings if you have them
  • The asbestos register, for older buildings

Let us know the site, the scope and your timescale, and we’ll put a fixed quote together. To get it moving, call the office on 01277 525 020 or email us.

What the job involves on each surface

Concrete and precast panel joints

Precast and concrete panel joints move daily. We use a sealant classed for the movement, laid over backing to depth.

Internal floor movement joints

Forklift and pallet-truck wheels break unsupported joint edges. We match the product to the traffic and the movement, and tell you if edges need repairing first.

Questions about Crofton

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

It can, yes: buildings near the sea take more wind-driven rain, and salt in the air nearer the shore. We check the specified product suits the exposure and pay close attention to preparation.

Is Speedfields Retail Park, near Crofton, within your area?

Yes. Our area takes in Crofton and its surroundings, with estates and business parks such as Speedfields Retail Park included. A few photos and the unit address let us price the work.

Does the weather affect joint sealing?

Outside work depends on conditions. Indoor joints can usually carry on regardless.

What sealant do you use in movement joints?

The specification comes first, then the joint’s movement and exposure. The quote states the sealant and its movement class.

How do you deal with asbestos in old sealant?

Some older mastics, especially in pre-2000 buildings, can contain asbestos. Before we disturb old sealant in an older building, we ask to see the asbestos register or survey, and if asbestos is suspected, work stops until it’s tested. Removing asbestos is a job for asbestos specialists, not us.

Can weather delay the job?

Outside, yes. Sealant needs a dry joint and a temperature within the product’s range, so damp, frosty or very cold days can stop external work. Internal work is rarely affected.

Can you work while the building is occupied?

In most cases, yes. Phased work can be planned so areas stay in use, with each area protected and signed.

Aftercare for building managers

Once the work is signed off, a little attention goes a long way:

  • Include every elevation and deck joint in periodic inspections
  • Report split or peeling joint sealant early
  • Inspect exposed joints once the cold weather has passed
  • Avoid parking heavy plant or pallets on joint lines

Every joint we seal is backed by a 12-month guarantee on workmanship. Keep the handover details, product and date with your O&M records, so the next reseal starts with the facts.

A failed deck joint lets water straight through to the level below. That water often carries de-icing salts with it and it can affect the structure over time. Resealing early limits the damage.

Warehouse floors and decks around Crofton

With the shore within about 1 mile, Crofton counts as a coastal location. Open joints in coastal car parks and yards let in salt-laden water as well as grit, so a failed joint lets more in and the edges break up sooner. Central London is about 67 miles from Crofton. The roads out of London are lined with trade parks and distribution sheds, and their floor joints take forklift and pallet-truck traffic all day.

For estates staff at a university like University of Portsmouth - North Zone, which lies east of Crofton, building and paving joints are part of the planned maintenance list. Large sites such as Gosport War Memorial Hospital (to the south-east of Crofton) have car parks, service roads and long elevations with movement joints in brick and panels. Schools such as Crofton School have movement joints in their walls and floors that are easy to overlook.

Crofton is about 1 mile east of Stubbington, in Hampshire. Anywhere in PO14, the process is the same: send details, get a fixed quote, we seal, and the work is guaranteed. We work across 723 places in Hampshire, from busy centres to rural villages.

If you need expansion joint sealing in PO14 and PO13, the process matches everywhere else we work: send details, get a quote, we seal, guaranteed. Among the streets we cover are Mark's Road, Gosport Road and Newgate Lane. If your building is just outside Crofton, we cover Peel Common (1 mile east), Rowner (1 mile east), Bridgemary (1 mile east), Lee-on-the-Solent (1 mile south) and Fareham (2 miles north). Nearby towns on our patch include Havant (10 miles east), Eastleigh (12 miles north-west), Horndean (10 miles north-east), Totton (15 miles north-west), Chandler's Ford (14 miles north-west) and Hedge End (8 miles north-west).

Landmarks near Crofton

Recent enquiries here include premises near Baycroft School and Peel Common Infant School and Nursery Unit, among other places. The closest station to Crofton is Fareham station, about 2.1 miles north of the centre. Other landmarks nearby include Gosport War Memorial Hospital (3 miles south-east) and Carron Row Farm Museum (3 miles north-west). Green spaces nearby include Portsdown Hill and West of the River Alver.

Map of Crofton © OpenStreetMap contributors
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