The Mastic Doctor team standing beside their branded vans outside an office building
Isle of Wight · England

Dunsbury expansion joint sealing

Work needed on a movement joint in Dunsbury? We look at it, seal it with the right product and hand it over with a 12-month guarantee.

  • Rain penetration at brick or block movement joints
  • Previous reseals laid over old sealant
  • Arrises breaking up along floor joints
1
Send details
Drawings, photos, a joint schedule or a site visit.
2
Get a quote
Scope agreed and priced before anything starts.
3
We seal
Prepared joints, the specified product, a tidy finish.
4
Guaranteed
Our workmanship is guaranteed for 12 months.
London, the South East & Scotland
CHAS accredited
£5m public liability

Expansion joint sealing near Dunsbury

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

Expansion joint sealing in Dunsbury, done properly

Width, depth and product all have to work together. Joint width must suit the movement and the movement class of the sealant, and depth is controlled using closed-cell backing rod, or bond-breaker tape in shallow joints. For wider joints, the width-to-depth ratio is often around 2:1, as the manufacturer advises, and the bead is tooled so it grips the two faces alone. The enquiries we see most involve expansion joints split through the centre of the bead and joints where the bead has lost adhesion, on blockwork control joints, car park decks and ramps and cladding panel joints. For commercial sealant work in Dunsbury, you deal with one contact from quote to sign-off, whether it’s one building or several.

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

Our 12-month guarantee is about workmanship, not wear and tear. Sealant wears with time, and movement, weather, cleaning and use decide how fast, so we are clear about what is covered before work starts.

The Mastic Doctor team standing beside their branded vans outside an office building
Where
Dunsbury (PO30)
Wider area
Isle of Wight
Cover
12 months on our workmanship
Quote
Fixed quote, scope in writing
Telephone
01277 525 020
Updated
3 November 2026

When something else is needed

Sealant solves a lot, but not everything, and we are upfront when that’s the case. These need a different solution:

  • Joints too narrow for the movement, which need redesigning by the engineer
  • Proprietary pre-formed expansion joint systems
  • Movement on a scale no sealant is meant to absorb

If you are not sure, just speak to us on 01277 525 020 or email us and we will give you a straight answer.

What we seal

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

For managing agents and facilities managers

Whether you are a managing agent, a property factor or an owner’s representative: send details, get a fixed quote, we seal, guaranteed. We can agree access arrangements and keyholder contacts beforehand.

We take on planned maintenance as well as one-off repairs: resealing failed joints building by building, on a schedule that suits your budget. Dunsbury can form part of a wider programme.

Traffic, movement and joints around Dunsbury

Dunsbury lies within about 1 mile of the sea. Open joints in coastal car parks and yards let in salt-laden water as well as grit, which is why split joints are worth sealing before the edges deteriorate. Dunsbury is in the South East, one of the UK’s drier regions. External joints still wait for dry conditions, and where de-icing salt is spread in winter, open joints let it in.

In and around Dunsbury, the right filler or sealant for each joint depends on the traffic and the movement it takes.

Dunsbury is about 7 miles south-west of Newport, in the Isle of Wight. Looking for expansion joint sealing in Dunsbury? We can help, as we do across the Isle of Wight. Dunsbury is one of 125 places in the Isle of Wight on our list for movement joints. For work in that direction, see our Southampton page, about 18 miles away.

Postcode districts covered here: PO30 for movement joints. Close to Dunsbury, our area also takes in Brook (1 mile south), Hulverstone (1 mile south-east), Brookgreen (1 mile south-east), Shalcombe (1 mile north-east) and Chilton Green (2 miles south-east). Further afield, our area takes in Newport (7 miles north-east), Ryde (14 miles east), Cowes (9 miles north-east), Sandown (13 miles east), Shanklin (12 miles east) and Ventnor (12 miles east). Island and remote sites need extra planning, with travel, ferry crossings where needed and weather to allow for, so give the site location in your enquiry.

Landmarks near Dunsbury

Nearby you’ll also find Yarmouth Castle (3.9 miles north-west) and Calbourne Water Mill And Rural Museum (2.3 miles north-east). The countryside around Dunsbury includes Westover Down.

Map of Dunsbury © OpenStreetMap contributors

FAQs: Dunsbury

Will our site in Dunsbury have to close for joint sealing?

In most 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’ll plan from there.

Is Dunsbury too far out for you?

No. Places such as Dunsbury are covered as much as the big towns. Our area covers London and the South East counties. Where we can, we group nearby jobs to make the most of each trip.

Can you send site paperwork?

Let us know which documents the site needs, such as RAMS, an insurance certificate or CSCS details, and we will confirm them with the quote.

Is any job too small?

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

What do you charge?

We don’t publish prices, as every site differs. Send photographs or drawings and we will price it at a fixed figure.

What hours do you work?

The office is staffed Monday to Friday, from 8am until 5pm. Let us know your site hours and access windows, and the work will be planned around them.

How soon can the area be used again?

That comes down to the sealant and the temperature. Some products skin over quickly but need longer to cure fully, so we’ll confirm the curing time on the day.

Keeping the joints sound

Regular inspection catches problems early. In particular:

  • Inspect exposed joints once the cold weather has passed
  • Act on the first tear or lifting edge rather than waiting
  • Avoid parking heavy plant or pallets on joint lines
  • Keep stones and debris out of open joint lines

On car parks, winter clearance can damage deck joint sealant. Lifting the blade at each joint avoids tearing the bead, and it’s worth checking joints once the cold weather has passed.

Floor joints with failed fillers break up quickly under wheels. Broken arrises jolt trucks, loads and drivers and the broken length grows with every pass. Sealing early protects the edges.

Our process

On arrival, we sign in, go through any site induction and check how permits are handled. Floors, finishes and fittings next to the joints are covered before anything is cut or cleaned, with the work itself typically taking a day or so for a modest run of joints, and longer where decks, ramps or floors are done in phases. For a building around Dunsbury, tell us how to find it and who will meet us. Add it to your enquiry and we’ll build it into the plan.

  1. We look at the joints, their width and how they’ve failed.
  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, and we tell you if any edges need repairing first.
  4. We control the depth with backing rod or, in shallow joints, bond-breaker tape.
  5. Where the maker calls for primer, it’s applied first, then the bead goes in and is tooled to a concave finish.
  6. Finished joints are checked and backed by our 12-month guarantee.

Preparing the site

  • Share the asbestos register for older buildings
  • Explain the parking and delivery arrangements
  • Agree which areas must stay open

Quotes

Every job follows the same four steps: send details, get a quote, we seal, guaranteed. To take the first step, call the office on 01277 525 020 or use the quote form.

Get a price

Read more

Surface by surface

Brickwork and blockwork joints

Brick and block edges need careful preparation. Faces are prepared and primed wherever the sealant maker calls for it before the bead goes in.

Car park decks and ramps

Water coming through deck joints is the usual first sign. The old seal comes out, the edges are prepared and the joint resealed.

What we are called out for in Dunsbury

Sun, rain and frost age external movement joints. In time the bead chalks, stiffens and cracks.

Typical triggers for a call:

  • Brittle, chalky sealant on external joints
  • Car park joints leaking onto vehicles below
  • Previous reseals laid over old sealant
  • Chipped joint edges on forklift routes

Around Dunsbury, open joints collect water and debris, and the arrises are the next to go.

Before you book anyone

  • The terms of the workmanship guarantee
  • How the joint faces will be prepared and primed
  • What site paperwork they can supply
  • Their pre-qualification and accreditations

Our contractor checklist

Accreditations

Trusted. Accredited. Insured.