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

Expansion and movement joint sealing in Sway, Hampshire

Our CSCS-carded applicators take on expansion and movement joint sealing in walls, decks and floors in Sway and the surrounding area. Send details for a fixed quote.

  • Spalled or broken joint edges in floors and decks
  • Damp inside where a wall movement joint has failed
  • Expansion joints split through the centre of the bead
1
Send details
Tell us about the site, with photos if you have them.
2
Get a quote
Scope agreed and priced before anything starts.
3
We seal
The right sealant, to the right depth, neatly finished.
4
Guaranteed
Our workmanship is guaranteed for 12 months.
London, the South East & Scotland
CHAS & Constructionline
Fully insured: £5m PL

Expansion joint sealing near Sway

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

How we handle expansion joint sealing in Sway

Floor movement joints in warehouses, retail and public buildings carry wheeled traffic. Without a sound filler, joint edges chip and spall under load, so the right filler or sealant for the traffic and movement matters. We’ll tell you if the edges need repairing before sealing, and phased work keeps areas in use. Site teams most often ask us about damp inside where a wall movement joint has failed and new sealant over old, now failing, across podiums and floor movement joints, cladding panel joints and car park decks and ramps. Looking for mastic applicators who cover Sway? Mastic Doctor has worked for contractors, FMs and building owners since 2005, with CSCS-carded applicators.

Rural business units around smaller places such as Sway often have new slabs laid inside older buildings. Joints in those slabs need a product suited to whatever runs over them, from pallet trucks to foot traffic.

Guaranteed is the last step of every job. Our workmanship is backed for 12 months, and the quote explains what it covers.

Location
Sway (SO41)
Region
Hampshire
Guarantee
12 months on our workmanship
Quotes
A fixed quote before we start
Call
01277 525 020
Page updated
3 November 2026
The Mastic Doctor team beside their liveried vans in front of an office building

Different surfaces, different methods

Podium joints

Podium decks are exposed and often trafficked. A sealant suited to both traffic and exposure is used.

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.

Honest limits

Before quoting, we check that sealant is the right answer. It isn’t the answer for:

  • Failed waterproofing membranes on podiums, roofs or decks (a waterproofing specialist’s job)
  • A joint that has to be widened or re-detailed before it can work
  • Damaged metal nosings or cover plates over a joint

If in doubt, call the office on 01277 525 020 or email a schedule or drawings and we’ll say what we think before you book.

What we seal

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

Common questions from Sway clients

Can you work on a hospital site such as Lymington New Forest Hospital?

Yes. We work in healthcare settings as well as offices and schools. Before anything starts, the estates team agrees permits, inductions and infection-control measures with us.

Do we have to stop operations in Sway while the 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. The phasing plan comes with the quote.

Can you quote from photos?

That depends on the size and complexity of the job. Simple work can often be priced from photos, and bigger or more complex jobs normally get a visit.

Does weather matter for sealant work?

It can, for external work. Sealant won’t bond properly to a wet or frosty joint, so external work may be moved if conditions aren’t right. Internal work is far less affected.

Is movement joint sealing guaranteed?

Our workmanship on movement joints carries a 12-month guarantee. The guarantee covers how we sealed, not damage caused afterwards.

Do the joint edges need to be sound before sealing?

The edges have to be sound. If they’re damaged, we’ll say so before any sealing so you’re not paying for a bead that won’t hold.

Can you work to our specification?

Yes. We follow the specification, along with the manufacturer’s installation guidance.

How a job runs

Site rules come first: signing in, inductions and any permit to work. Once we are cleared to begin, the joints are worked through in the order agreed with your site contact, and each area is checked before we leave it. For a site in Sway, we plan so the whole job is done in one go where possible. Photos with rough sizes let us arrive with everything needed.

  1. We start with photos, approximate lengths and any drawings, visiting where needed.
  2. We compare each joint’s width with the movement and the sealant’s capability, and flag anything that needs an engineer.
  3. Old sealant and debris are cut out of every joint.
  4. Edges are checked, and we tell you if any need repairing before sealing.
  5. A sealant suited to the movement and traffic is laid to depth and tooled.
  6. Areas reopen once cured, and the work carries our 12-month guarantee.

What we need from you

  • For older buildings, check the asbestos register before work
  • Confirm the product named in the specification
  • Arrange parking or a loading space

Get a fixed quote

For a fixed quote, give us a call on 01277 525 020 or use the quote form. You can also send details through our quote form.

Get a price

Related advice

Cost factors for movement joints

Before we quote, we look at:

  • Travel to remote or island sites
  • How much there is to seal
  • Working within restricted access windows
  • How accessible the joints are

The work involved drives the cost: removing old material, preparing the joints, the product, the access and how the work is phased. Call for a fixed quote.

What to include in your enquiry

Whether it’s one area or a whole building, the same details help:

  • Drawings or a marked-up plan, if available
  • Your programme or deadline
  • How the joints are reached, and at what height
  • Clear photos of the problem areas

Need a figure for a tender or a budget? Send the scope and any drawings, and we will return a fixed quote that you can work with. If you have questions first, call the office on 01277 525 020 or use the quote form.

Where floor joints take the most wear near Sway

Rainfall across the South East, Sway included, is lower than in many parts of the UK. External joints still wait for dry conditions, and gritting in cold spells finds its way into open joints.

For a school such as St Luke's Church of England Primary School, playground and building joints can be done in the holidays.

Sway is about 3 miles north-west of Lymington, in Hampshire. Any commercial site in Sway is covered, for single jobs and planned programmes alike. We work across 723 places in Hampshire, from busy centres to rural villages. For work in that direction, see our Southampton page (13 miles or so).

If you need expansion joint sealing in SO41, the process matches everywhere else we work: send details, get a quote, we seal, guaranteed. For a building on Station Road, Anderwood Drive and Cruse Close or nearby, we can quote for movement joints. Sites close to Sway are covered too, including Mead End (1 mile west), Tiptoe (1 mile south-west), Hordle (2 miles south), Ashley (2 miles south-west) and Bashley (2 miles west). A short drive away, we cover Totton (10 miles north-east), Lymington (3 miles south-east), Romsey (15 miles north), Hythe (10 miles north-east), New Milton (3 miles south-west) and Ringwood (9 miles north-west).

Landmarks near Sway

Recent enquiries here include premises near Forest Heath Hotel, among other places. Sway has its own railway station: Sway station. Nearby you will also find Lymington New Forest Hospital (2.9 miles south-east) and Sammy Miller Motorcycle Museum (3.3 miles south-west). Green spaces nearby include Milford on Sea LNR.

Map of Sway © OpenStreetMap contributors

What we are called out for in Sway

When a bead pulls away from one face, it has lost adhesion. Poor preparation, a skipped primer, or sealant bonded to the back of the joint are typical reasons, and it’s common on joints sealed in a hurry.

Common reasons buildings call us in:

  • Expansion joints split through the centre of the bead
  • Water dripping through deck or ramp joints
  • Sealant peeling off one face of the joint
  • New sealant over old, now failing

A healthcare site such as Lymington New Forest Hospital, 2.9 miles to the south-east of Sway, depends on car parks, ramps and service yards whose joints take traffic all day.

Before you book anyone

  • The named product and why it was chosen
  • Whether primer will be used where the manufacturer specifies it
  • Their approach to joint depth and backing
  • Their pre-qualification and accreditations

Choosing a commercial sealant contractor

Doing it in-house

For most general trades, sealant is a sideline. A specialist brings correct preparation, depth control with backing rod and a product suited to that particular joint, which is what makes a joint last.

Some joints are best left to specialists: for instance fire-rated seals that must match a tested detail, trafficked floor joints and external movement joints. Getting these wrong normally costs more in the end than doing them right.

Accreditations

Trusted. Accredited. Insured.