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

Horndean expansion joint sealing

Expansion joint sealing for Horndean, from a contractor working since 2005. Fully insured and CHAS accredited.

  • Rain penetration at brick or block movement joints
  • Layers of sealant in a movement joint
  • Arrises breaking up along floor joints
1
Send details
Tell us about the site, with photos if you have them.
2
Get a quote
A fixed quote for the work, with the scope in writing.
3
We seal
Failed joints cut out, faces prepared, new sealant laid.
4
Guaranteed
Backed by a 12-month workmanship guarantee.
South East, London & Scotland
CHAS accredited
Fully insured: £5m PL

Expansion joint sealing near Horndean

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

How we handle expansion joint sealing in Horndean

We have been sealing expansion and movement joints for over 20 years for contractors, facilities managers and owners. CHAS accredited, Constructionline member, CSCS-carded applicators and five million pounds of public liability insurance. Workmanship is backed by our 12-month guarantee. We work on car park decks and ramps, brickwork movement joints and podiums and floor movement joints, and the failures we’re asked to look at most are leaks through car park deck joints onto the level below and previous reseals laid over old sealant. A specialist sealant contractor works differently from a general builder: on jobs in Horndean, preparation and product choice get the time they need.

Towns such as Horndean usually have an industrial estate or a few business units, with warehouse floors and loading areas. Small units are often busy, so joints are done at times that suit the occupier.

What our 12-month guarantee covers is the way we did the job: the preparation, the sealing and the tooling. Damage, later alterations by others and movement beyond what the joint was designed for sit outside it.

Mastic Doctor team members lined up next to their branded vans outside an office building
Place
Horndean (PO8, PO7)
Wider area
Hampshire
Guarantee
12 months on our workmanship
Quote
A fixed quote before we start
Phone
01277 525 020
Page updated
3 November 2026

Questions we are asked in Horndean

Do you cover business parks and estates near Horndean, such as Westfield Industrial Estate?

Yes. We cover Horndean and the area around it, including industrial estates, business parks and retail parks such as Westfield Industrial Estate. To start, just call the office on 01277 525 020 or use the quote form with the unit, the joints involved and your access times.

Can you take on a job at a hospital such as Havant War Memorial Hospital?

Yes, healthcare and care buildings are part of our work. The estates team’s permit system and infection-control rules come first, and the work is planned around them.

Can you quote from photographs?

That depends on the size and complexity of the job. Simple work can often be priced from photos, while larger or less clear jobs get a site visit first.

Who decides which product is used?

The specification comes first, if there is one. If there isn’t one, it comes down to the joint: how much it moves, what it bonds to and whether it’s wet, trafficked or fire-rated.

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.

Can you handle several sites?

Yes. Several buildings can share a single quote, and you deal with one contact throughout across South East England, Greater London and Scotland.

Is any job too small?

Whatever the size, the process is the same: send details, get a fixed quote, we seal, guaranteed.

When to bring in a specialist

For most general trades, sealant is a sideline. A specialist prepares properly, controls joint depth and picks a product with the right movement class, which is what makes a joint last.

Site maintenance staff can often handle a short internal joint. 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.

Warehouse floors and decks around Horndean

Rainfall across the South East, Horndean included, is lower than in many parts of the UK. Outside joints in yards and car parks still have to be dry before sealing, and where de-icing salt is spread in winter, open joints let it in. Horndean lies roughly 57 miles out from central London. The South East has large numbers of industrial estates and warehouses along the motorway corridors.

Estates like Westfield Industrial Estate (0.7 miles north-east of Horndean) combine warehouse slabs, yards and loading bays, all with joints under wheels. Another example is Enterprise Industrial Estate (1 mile north-east of Horndean), where floors and yards would be done in stages around the occupiers.

Horndean is about 7 miles north-east of Portsmouth, in Hampshire. Looking for expansion joint sealing in Horndean? We can help. Across Hampshire, 723 places are covered, including Horndean. For work in that direction, see our Portsmouth page.

Postcode districts covered here: PO8 and PO7. If your site is on London Road, Kings Mede and Causeway Farm or close by, we can quote for movement joints. Main routes into Horndean include the A3 and A3(M), useful when we plan access and materials. Just outside Horndean, we also work in Lovedean (1 mile west), Wecock Farm (1 mile south-west), Catherington (2 miles north), Anmore (2 miles west) and Denmead (2 miles west). A short drive away, we cover Gosport (9 miles south-west), Havant (3 miles south), Eastleigh (15 miles west), Fareham (9 miles south-west), Hedge End (13 miles west) and Petersfield (7 miles north-east). As one of the bigger centres in Hampshire, Horndean has a broad mix of commercial, public and industrial buildings.

Landmarks near Horndean

In Horndean, that means premises near Horndean Infant School and Red Lion Inn and the streets around them. The nearest railway station is Rowlands Castle station, roughly 2.6 miles south-east of the centre. Well-known places in the area include Havant War Memorial Hospital (3.8 miles south) and Clanfield Earthwork (3 miles north-east). Open spaces near Horndean include Windmill Hill and Southmoor Nature Reserve.

Map of Horndean © OpenStreetMap contributors

Quoting for work in Horndean

These are the things that shape the price:

  • Which sealant the job calls for
  • How accessible the joints are
  • Location, for remote and island sites
  • Quantities, in metres or numbers

The specified product makes a difference, as does the preparation each joint needs, such as cutting out, priming or new backing rod. Access, phasing and site requirements come into it too.

What to include in your enquiry

For an accurate fixed quote, we need a clear picture of the site. Useful things to include:

  • How the joints are reached, and at what height
  • Specification clauses that apply
  • Drawings or a marked-up plan, if available
  • The type of building and who uses it

To get a fixed quote, call 01277 525 020 or email the details over, telling us the site location and the nature of the job. You can also send details through our quote form.

Common problems we fix in Horndean

Three-sided adhesion is a common cause of early failure. Sealant fixed to the base and sides can’t flex, so it tears, which is why depth control matters.

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

  • Expansion joints filled with dirt and stones
  • Leaks through car park deck joints onto the level below
  • Movement joints with split or torn sealant
  • Previous reseals laid over old sealant

For an estate such as Havant War Memorial Hospital, which lies south of Horndean, the joints in ramps, decks and long building elevations all need attention over time.

What your quote should include

  • How the joint faces will be prepared and primed
  • How they’ll work around occupants
  • Which product they’ll use, and why it suits the joint
  • Proof of insurance

Questions to ask before you appoint anyone

When it isn’t the sealant

Honesty saves time and money. Fresh joints won’t solve:

  • Structural movement beyond what the joints were designed for (that needs a structural engineer)
  • Concrete or masonry repairs along the arrises
  • Waterproofing layers buried beneath the sealant

Not sure which it is? You can speak to us on 01277 525 020 or email a schedule or drawings and we will tell you honestly.

Surfaces we seal

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

Keeping the joints sound

Regular inspection catches problems early. In particular:

  • Check joints after long freezing spells
  • Leave barriers in place until fresh joint sealant has cured
  • Note which joints were done, when, and with what
  • Inspect movement joints alongside other routine building checks

In warehouses, forklift and pallet-truck routes take the most wear. Keep racking feet and heavy point loads off joint lines, and report any chipped edges early.

An open joint fills with grit, and a joint full of grit can’t close. The arrises crack and break away under the load. Keeping the seal sound avoids all of that.

How a job runs

We follow your site rules from the start: sign-in, induction and whatever permit system the building uses. Once we are cleared to begin, the joints are worked through in the order agreed with your site contact. Parking and loading for town-centre jobs in Horndean are worth mentioning when you send details. On estates and business parks it’s normally simpler.

  1. Photos, joint lengths and drawings come to us, or we visit.
  2. Joint widths and expected movement are checked against what the sealant can take and tell you if the design looks wrong for the movement.
  3. Old sealant and debris are cut out of every joint.
  4. Any broken arrises or friable edges are flagged before work goes further.
  5. A sealant suited to the movement and traffic is laid to depth and tooled.
  6. Each area is handed back after its cure time, under our 12-month guarantee.

What we need from you

  • Tell us what induction or permit system the site runs
  • Point out any areas we must not close
  • Share your working hours and any access restrictions

Get a fixed quote

If there’s a specification, drawings or a tender package, send it with your enquiry, and we’ll price against exactly what is specified. Smaller jobs need nothing more than photographs and a few notes.

Get a price

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Accreditations

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