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

Expansion and movement joint sealing in High Cross, Hampshire

Expansion and movement joint sealing in walls, decks and floors in High Cross. CHAS accredited, Constructionline member, with a 12-month guarantee on workmanship.

  • Previous reseals laid over old sealant
  • Damp inside where a wall movement joint has failed
  • Expansion joints filled with dirt and stones
1
Send details
Photos, drawings or a schedule, or we visit.
2
Get a quote
One fixed quote covering the agreed scope.
3
We seal
Failed joints cut out, faces prepared, new sealant laid.
4
Guaranteed
Our workmanship is guaranteed for 12 months.
Covering the South East & Scotland
CHAS accredited
Fully insured: £5m PL

Expansion joint sealing for businesses in High Cross

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

Owners, agents and contractors

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.

When you manage a building on behalf of an owner, clear figures and clear communication matter. You get a fixed quote, an agreed scope and a walk round at the end, plus a 12-month guarantee.

How we handle expansion joint sealing in High Cross

If you need expansion joint sealing in High Cross, start with photographs and joint lengths. We’ll come and look where photographs don’t show enough. To discuss the joints first, speak to us on 01277 525 020 or send details through our quote form. If you have brittle, chalky sealant on external joints and layers of sealant in a movement joint, we can put it right. Facilities teams, main contractors and managing agents in High Cross tend to want the same three things: a fixed quote, no surprises on site and a 12-month guarantee behind the result.

For a site near High Cross, measurements and photographs up front mean one trip where possible. Tell us the joint widths if you can, and what drives or walks over them.

Building owners and contractors get the same cover: a 12-month guarantee on our workmanship. Faults in the structure, damage and other trades’ work fall outside it, and we say so plainly.

Location
High Cross (GU32)
Wider area
Hampshire
Guarantee
12 months on every job
Price
A fixed quote before we start
Telephone
01277 525 020
Updated
3 November 2026
The Mastic Doctor team beside their liveried vans in front of an office building

Diagnose, treat, sign off

The first thing on site is a walk round with your contact, to confirm the scope, the order of work and any areas we must keep clear. After that, any old or failed material is removed, each joint is prepared and the new sealant goes in. For work around High Cross, we aim to finish in one visit, so photographs and measurements up front really help. That way the right products come on the day.

  1. First the joints are inspected, widths measured and the type of failure noted.
  2. You receive a fixed quote stating the product and the movement it is rated for.
  3. Where areas have to stay open, we agree a phased sequence before starting.
  4. The failed seal is cut out and both joint faces cleaned back to sound material.
  5. Depth is controlled with backing, the faces are primed where the maker calls for it, then the bead is laid and tooled.
  6. Finished joints are inspected, the cure time confirmed and the 12-month guarantee applies.

Getting the site ready

  • Share the asbestos register for older buildings
  • Tell us your opening times and when work is allowed
  • Warn occupants and staff about the work

Request a quote

A handful of photos and a postcode is the fastest way to a quote. Send them through the quote form, or ring 01277 525 020 or send photos by email to discuss it first.

Get a quick quote

Related advice

FAQs: High Cross

Does a site in High Cross have to shut while its joints are sealed?

In the majority of cases the site keeps working. Joints are done in phases, a bay, aisle or deck at a time. Tell us which hours and entrances we can use and we will plan from there.

Do you take on work at healthcare sites like Petersfield Hospital?

Yes, provided the work is planned with the site’s estates team. Before anything starts, the estates team agrees permits, inductions and infection-control measures with us.

Do you use silicone or polyurethane in movement joints?

Whatever suits the joint and the specification. The quote states the sealant and its movement class, so you know what’s going in.

How long will the new sealant last?

There’s no fixed lifespan: movement, exposure, cleaning, traffic and the product all play a part. Sealant joints are maintenance items, so inspect them regularly.

Can weather delay the job?

It can, when the joints are outside. Sealant won’t bond properly to a wet or frosty joint, so we watch the forecast and rearrange outside work if we have to. Internal work is far less affected.

Can you quote from photographs?

It depends on the job. Simple work can often be priced from photos, and bigger or more complex jobs usually get a visit.

What do you charge?

Every job gets its own fixed quote. To get one, call the office on 01277 525 020 or email drawings and photos with a description of the work.

Signs you need expansion joint sealing in High Cross

When a bead pulls away from one face, it has lost adhesion. Dusty, damp or contaminated faces, a missing primer and three-sided adhesion are the usual causes, and it’s common on joints sealed in a hurry.

These are often picked up first by site or facilities staff:

  • Debris jammed in movement joints
  • Spalled or broken joint edges in floors and decks
  • Previous reseals laid over old sealant
  • Sealant pulling off the joint face

Schools like Froxfield Church of England Primary School often have long brick elevations with movement joints that age quietly.

Questions to ask before you book

  • Will failed sealant be removed rather than covered?
  • How they handle RAMS and site documents
  • Will CSCS-carded applicators be on site?
  • How joint depth will be controlled

Questions to ask before you appoint anyone

When to bring in a specialist

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

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.

Cost factors for movement joints

What shapes the price:

  • Whether the work must be split into stages
  • Backing rod, priming and other preparation
  • Access and working height
  • Site requirements such as inductions and permits

Cost follows what’s involved: removing old material, preparing the joints, the product, the access and how the work is phased. Call for a quote and we’ll explain how it’s made up.

What we need to price the job

It doesn’t need to be a full survey. These details are enough to start:

  • Approximate linear metres or a joint schedule
  • What the building is and how it’s used
  • Any specification or named product
  • Your programme or deadline

Pricing a project or setting a maintenance budget? We will quote against your scope and drawings that you can work with. For a chat about it beforehand, phone 01277 525 020 or email the details over.

Slabs, ramps and loading bays in High Cross

Rainfall across the South East, High Cross included, is lower than in many parts of the UK. External slab and deck joints still need a dry, clean joint to seal, while winter salting gets into any joint left open. At about 50 miles from central London, High Cross is within reach of the capital. The South East has large numbers of industrial estates and warehouses along the motorway corridors.

Sites like Petersfield Hospital, 2.8 miles south-east of High Cross, carry ambulances, deliveries and visitors’ cars over their road and deck joints.

High Cross is about 3 miles north-west of Petersfield, in Hampshire. High Cross sits inside our coverage and the rest of Hampshire, and jobs here get the same fixed quote and 12-month guarantee as anywhere else. High Cross is one of 723 places we cover in Hampshire for movement joints. For work in that direction, see our Portsmouth page, about 16 miles away.

If you need expansion joint sealing in GU32, the process matches everywhere else we work: details, then a fixed price, then sealing and a 12-month guarantee. For a building on High Cross Lane, Dellfield and Deans Dell or nearby, we can quote for movement joints. Just outside High Cross, we also work in Froxfield Green (1 mile south-west), Oakshott (2 miles north-east), Langrish (2 miles south), Stroud (2 miles south) and Steep (2 miles east). A short drive away, we cover Winchester (15 miles west), Havant (12 miles south), Horndean (9 miles south), Alton (8 miles north), Waterlooville (11 miles south) and Petersfield (3 miles south-east).

Near you in High Cross

The nearest railway station is Petersfield station, roughly 2.6 miles south-east of the centre. Other landmarks nearby include Petersfield Community Hospital (2.7 miles south-east) and Bear Museum (3.1 miles south-east). The countryside around High Cross includes Wheatham Hill and Liss Riverside Railway Walk South.

Map of High Cross © OpenStreetMap contributors

When something else is needed

We check first that sealant really is the fix. It won’t put right:

  • Waterproofing layers buried beneath the sealant
  • Structural movement beyond what the joints were designed for (that needs a structural engineer)
  • Damaged metal nosings or cover plates over a joint

If in doubt, speak to us on 01277 525 020 or email a schedule or drawings and we will say what we think before you book.

Joints and surfaces we work on

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

Trusted. Accredited. Insured.