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

Expansion Joint Sealing in Dounby

Sealant work in Dounby for main contractors, managing agents and facilities managers: expansion and movement joint sealing in walls, decks and floors, quoted at a fixed price.

  • Sealant pulling off the joint face
  • Layers of sealant in a movement joint
  • Arrises breaking up along floor joints
1
Send details
Send the specification, photos or a marked-up plan.
2
Get a quote
A fixed quote for the work, with the scope in writing.
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
£5m PL insurance

Expansion joint sealing across Dounby

Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.

About our expansion joint sealing in Dounby

The seal is what lets a movement joint do its job. Once it fails, water, grit and debris get in; the joint jams, its edges take the load and the arrises spall. Dealt with early, it stays a sealant job rather than a concrete or masonry repair. Most enquiries involve leaks through car park deck joints onto the level below and damp inside where a wall movement joint has failed, on blockwork control joints, brickwork movement joints and car park decks and ramps. Whether you call it commercial sealant work, mastic application or joint sealing, the work in Dounby is the same: failed joints cut out, faces prepared and the right sealant laid to the right depth.

Weather windows decide external joint work around a place like Dounby: sealant needs a dry joint and a temperature within its range. Internal floors can be done whenever suits the site.

Every job we finish is backed by a 12-month workmanship guarantee, wherever the site is. If our installation lets you down in that time, we return and fix it.

The Mastic Doctor team standing beside their branded vans outside an office building
Location
Dounby (KW17)
Wider area
Orkney Islands
Cover
12 months on every job
Quote
Quoted before any work starts
Telephone
01277 525 020
Page updated
3 November 2026

From enquiry to sign-off

We bring the products specified for the job, along with primers and backing rod. Any old material is cut back to clean, sound faces, primer goes on where the manufacturer specifies it, and the sealant is tooled off neatly. For work around Dounby, we aim for one trip, so photographs, sizes and a full list matter. Outside work also needs a suitable weather window.

  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 flag anything that needs an engineer.
  3. Every joint is cleared of the failed seal and any grit packed into it.
  4. Edges are checked, and we tell you if any need repairing before sealing.
  5. The right sealant goes in at the right depth, bonded to the two sides only.
  6. Each area is handed back after its cure time, under our 12-month guarantee.

Before we start on site

  • Point out parking and an unloading spot
  • Tell us what induction or permit system the site runs
  • Clear stock, furniture or equipment away from the joints

Ask for a quote

Let us know the site, the scope and your timescale, and a fixed quote will follow. The easiest way is to ring 01277 525 020 or send details through our quote form.

Ask for a quote

Advice

Why act early in Dounby

A failed joint seal doesn’t mean the slab, panel or wall needs replacing. If the material either side is sound, a properly prepared reseal restores the joint. If the edges have broken up, we will tell you they need repairing first. Exposed buildings in Scotland take a lot of weather, and for a smaller place like Dounby, a repair visit takes planning, so it’s better to act early.

Access often affects the price as much as the sealing: easy-to-reach joints are quicker than those that need equipment to get to. Tell us how the joints are reached and call for a quote.

Why appoint us

  • Workmanship guaranteed for 12 months
  • Public liability insurance in place
  • Colour agreed before work starts
  • Fixed quotes based on photos, drawings or a visit

Take a look at our cost guide and our accreditations and insurance.

Slabs, ramps and loading bays in Dounby

The sea is no more than about 3 miles from Dounby. External movement joints in car parks, ramps and yards near the coast take salt and wind-driven rain on top of traffic, which is why split joints are worth sealing before the edges deteriorate. Island jobs, Dounby among them, are planned around the ferry and the forecast. Joint widths, lengths and the traffic over them help us bring the right fillers and sealants.

A joint near Dounby that has lost its sealant lets in water and grit, and the edges suffer next.

Dounby is about 12 miles north-west of Kirkwall, in the Orkney Islands. Anywhere in KW17, the process is the same: send details, get a fixed quote, we seal, and the work is guaranteed. We work across 51 places in the Orkney Islands.

We cover the KW17 postcode districts. Streets here include Flett's Park, Back Road and Hillside Road. Just outside Dounby, we also work in Hourston (1 mile south), Skeabrae (1 mile west), Russland (2 miles south), Harray (3 miles south-east) and Tenston (3 miles south-west). Dounby is one of the busier places in the Orkney Islands, and its commercial and public buildings are all within our area. Where a site is remote or on an island, we plan travel and materials carefully, so include the location in your enquiry.

Around Dounby

A little further out are Corrigall Farm Museum (2.1 miles south-east). Not far away are Birsay moors RSPB Reserve and Greeny Hill.

Map of Dounby © OpenStreetMap contributors

Common problems we fix in Dounby

Sun, rain and frost age external movement joints. UV hardens the surface, and the sealant loses its ability to stretch, so it can’t follow the movement any more.

Typical triggers for a call:

  • Water getting into the wall through a failed joint
  • Torn sealant in brick or block movement joints
  • Layers of sealant in a movement joint
  • Expansion joints filled with dirt and stones

For floors and slabs around Dounby, the product is chosen for the traffic and the movement at each joint.

Comparing quotes

  • How they handle RAMS and site documents
  • Is the sealant right for the movement and the substrate?
  • Will failed sealant be removed rather than covered?
  • How the joint faces will be prepared and primed

Our contractor checklist

General trades versus a specialist

Redoing a failed joint normally costs more than getting it right at the outset, since all of it has to come out and the faces be cleaned back again. For that reason, many FMs and contractors use a sealant specialist from the outset.

Using site staff can make sense for a small touch-up, but larger jobs are different: a specialist brings efficiency, a consistent finish and a 12-month guarantee.

Cost factors for movement joints

What shapes the price:

  • Distance, for remote addresses
  • Whether the work must be split into stages
  • Specialist products, such as fire-rated or hygienic sealants
  • Any access equipment needed

What a job costs comes down to how many linear metres there are, how much old material needs removing and how the joints are reached. Call for a quote once you have the details.

Before you send an enquiry

To price the job accurately, we need a clear picture of the site. Send us:

  • Whether the building will be occupied during the work
  • Asbestos survey details if the building is older
  • The postcode of the building
  • How the joints are reached, and at what height

Photos, drawings or a schedule of the joints and a fixed quote comes back to you. If the job needs a look first, we’ll arrange a site visit.

Commercial clients in Dounby

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

We work for building owners and managing agents on sealant work across single buildings or whole portfolios. One quote can cover more than one site, so there’s one set of paperwork to deal with.

Questions we are asked in Dounby

Does the sea air around Dounby change the choice of sealant?

It can. Driven rain and salt are tougher on outside sealant than sheltered inland conditions. We check the specified product suits the exposure and pay close attention to preparation.

Do we have to stop operations in Dounby while the joints are sealed?

Typically not: we work in sections and hand each one back once it has cured. The phasing plan comes with the quote.

Does the weather affect the work?

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. Internal work is rarely affected.

How long does movement joint sealing take?

It usually takes a day or so for a modest run of joints, and longer where decks, ramps or floors are done in phases and phased work can stretch that to suit your site. Cure time before reopening is confirmed on the day.

How much does the work cost?

There isn’t a price list, as every site differs. With photographs or drawings, we can give you a fixed quote.

How long will the new sealant last?

It depends on movement, UV and weather, cleaning, traffic and the product. Treat them as maintenance items and inspect them regularly.

Are you CHAS accredited and on Constructionline?

Yes. We’re CHAS accredited, we’re a Constructionline member and we use CSCS-carded applicators.

Accreditations

Trusted. Accredited. Insured.