The Mastic Doctor team standing beside their branded vans outside an office building
Orkney Islands · Scotland

Expansion joint sealing in St Margaret's Hope

Expansion and movement joint sealing in walls, decks and floors in St Margaret's Hope and across the Orkney Islands. CHAS accredited, Constructionline member, with a 12-month guarantee on workmanship.

  • Damp inside where a wall movement joint has failed
  • Spalled or broken joint edges in floors and decks
  • Debris jammed in movement joints
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
Signed off, with 12 months’ guarantee.
Covering the South East & Scotland
CHAS & Constructionline
Fully insured: £5m PL

Expansion joint sealing across St Margaret's Hope

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

How we handle expansion joint sealing in St Margaret's Hope

Width, depth and product all have to work together. The joint has to be wide enough for the expected movement and the sealant’s movement capability, 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. We work on cladding panel joints, podiums and floor movement joints and brickwork movement joints, and the failures we are asked to look at most are expansion joints split through the centre of the bead and sealant peeling off one face of the joint. Sealant contractors, mastic applicators, sealant specialists: whatever the job title on the order, in St Margaret's Hope it comes down to the same thing: failed joints cut out, faces prepared and the right sealant laid to the right depth.

Around smaller Scottish places like St Margaret's Hope, slabs needing attention are often in agricultural buildings, workshops, schools and hotels. Concrete slabs and yards there take vehicles and weather.

Every job ends the same way: guaranteed. Our workmanship is backed for 12 months, and we explain exactly what that covers when we quote.

Location
St Margaret's Hope (KW17)
Wider area
Orkney Islands
Cover
12 months on our workmanship
Quotes
A fixed quote before we start
Call
01277 525 020
Last updated
3 November 2026
The Mastic Doctor team beside their liveried vans in front of an office building

How a job runs

Where the site stays busy, the work is phased so only one area is out of use at a time. Each section is protected, cleaned back and sealed, then reopened once the sealant allows before we move to the next. Travel to smaller Scottish places like St Margaret's Hope is planned so the job is finished in one visit where possible, so photographs, sizes and a full list matter. Outside work also needs a suitable weather window.

  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. Phasing is agreed so decks, floors or entrances can stay in use where needed.
  4. The failed seal is cut out and both joint faces cleaned back to sound material.
  5. Backing rod or bond-breaker sets the depth, primer goes on where specified, and the sealant is applied and tooled.
  6. We check each joint with you, confirm the cure time and sign off under our 12-month guarantee.

Before we start on site

  • Share your working hours and any access restrictions
  • Tell us which areas need to stay in use
  • Point out parking and an unloading spot

Getting a fixed quote

We quote a fixed sum against the scope you give us, so you know the figure before anyone is on site. To ask for one, call 01277 525 020 or email drawings and photos.

Get a price

Related advice

Questions we are asked in St Margaret's Hope

Can you take on a job in St Margaret's Hope, on the island?

Yes. We work across every Scottish council area, and that includes island locations such as St Margaret's Hope. Island work is planned around ferry crossings and the weather, so photos and a full list before we travel are essential.

Our building in St Margaret's Hope is near the coast: does that change the sealant?

It can, yes: buildings near the sea take more wind-driven rain, and salt in the air nearer the shore. That puts more weight on product choice, primers where the manufacturer specifies them, and correct joint sizing.

Will you just go over the old sealant?

No. Failed sealant is removed and the faces cleaned back to sound, dry material first, since fresh sealant will not bond reliably to aged material.

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. Inside work is seldom held up.

Can the building stay open while you work?

Yes, as long as we plan it. We agree a sequence with your contact so just one area at a time is disrupted.

When can the area be used after sealing?

Curing time varies by product, and we confirm it on the day.

Can a joint be sealed if the edges are broken?

The edges have to be sound. Where they’ve broken up, we’ll tell you they need repairing first so you are not paying for a bead that won’t hold.

How the quote is worked out

A fixed quote reflects the actual work. It allows for:

  • Distance, for remote addresses
  • Removal of failed or old sealant
  • Induction, permit and paperwork requirements
  • Specialist products, such as fire-rated or hygienic sealants

The price depends on how many linear metres there are, how much old material needs removing and how the joints are reached. Call for a fixed quote when you’re ready.

What to include in your enquiry

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

  • The product your specification calls for
  • Any dates the work must fit around
  • Asbestos survey details if the building is older
  • Rough lengths or quantities, or drawings if you have them

The quickest route to a quote is a few photographs and the site postcode. Send them through the quote form, or call 01277 525 020 or email drawings and photos if you’d rather talk the job through.

Expansion joint sealing around St Margaret's Hope: how the place shapes the job

St Margaret's Hope sits close to the coast, within about 1 mile. Near the sea, external slabs, ramps and decks see salt air and driven rain as well as their usual loads, and edges left open tend to break up faster. Being in the east of Scotland, St Margaret's Hope gets less rain than the west coast. Frost and de-icing salt still find their way into open external joints. Autumn is a sensible time to seal them.

For floors and slabs around St Margaret's Hope, the product is chosen for the traffic and the movement at each joint.

St Margaret's Hope is about 11 miles south of Kirkwall, in the Orkney Islands. We cover commercial sites throughout St Margaret's Hope, whether it’s a single job or part of a planned programme. 51 places across the Orkney Islands fall within our area, St Margaret's Hope among them.

We cover the KW17 postcode districts. We cover commercial and managed buildings on Church Road, Taftingus Place and Back Road. If your building is just outside St Margaret's Hope, we cover Widewall (2 miles south-west), Grimness (2 miles east), Burray Village (2 miles north-east), St Mary's (5 miles north) and Upper Sanday (8 miles north-east). As one of the bigger centres in the Orkney Islands, St Margaret's Hope has a broad mix of commercial, public and industrial buildings, and we cover them all. 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.

Around St Margaret's Hope

Other landmarks nearby include W Hourston Blacksmiths Museum (less than half a mile west). The countryside around St Margaret's Hope includes Ward Hill and Mill Pond.

Map of St Margaret's Hope © OpenStreetMap contributors

Common problems we fix in St Margaret's Hope

Repeated failure often traces back to the wrong product. A stiff or general-purpose sealant across a joint with large movement won’t cope. Movement capability is set out in BS EN ISO 11600, and specifications often refer to it.

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

  • Water dripping through deck or ramp joints
  • Debris jammed in movement joints
  • Sealant pulling off the joint face
  • Arrises breaking up along floor joints

A joint near St Margaret's Hope that has lost its sealant lets in water and grit, and the edges suffer next.

Questions to ask before you book

  • Whether primer will be used where the manufacturer specifies it
  • Who will actually carry out the work
  • How long is the guarantee, and what does it include?
  • The named product and why it was chosen

Choosing a commercial sealant contractor

Building owners, agents and FMs in St Margaret's Hope

Housing associations and managing agents often need work done across blocks and communal areas. We phase the work so people keep access, with each stage agreed with your site contact.

Planned maintenance programmes are welcome: working through a building or an estate in stages that fit your budget. St Margaret's Hope can form part of a wider programme.

General trades versus a specialist

What you see is the finished bead, but most of the work is hidden. Correct depth, the right primer and a sealant matched to the movement are where general trades tend to cut corners.

Paperwork matters too. Main contractors and clients often ask for CSCS cards, RAMS and insurance details, and we will confirm the paperwork you need with the quote.

Maintenance after handover

Regular inspection catches problems early. Specifically:

  • Treat a small split as a warning, not a cosmetic issue
  • Look over external and deck joints after a hard winter
  • Keep product details with the building records for the next reseal
  • Keep traffic off new joints until the cure time is up

Floor joints on main traffic routes need watching more closely than the rest. Avoid standing heavy loads or racking legs on the joints.

Once debris packs a failed joint, the structure has nowhere to expand. The arrises crack and break away under the load, turning a sealant job into a repair job. A sound seal keeps the joint working.

Accreditations

Trusted. Accredited. Insured.