The Mastic Doctor team standing beside their branded vans outside an office building
Na h-Eileanan Siar · Scotland

Na Gearrannan expansion joint sealing

Looking for expansion joint sealing in Na Gearrannan? Send us the details for a fixed quote, backed by a 12-month guarantee on the work.

  • Water dripping through deck or ramp joints
  • Rain penetration at brick or block movement joints
  • Weathered movement joint sealant that no longer flexes
1
Send details
Drawings, photos, a joint schedule or a site visit.
2
Get a quote
A fixed quote for the work, with the scope in writing.
3
We seal
Prepared joints, the specified product, a tidy finish.
4
Guaranteed
12-month guarantee on our workmanship.
Covering the South East & Scotland
CHAS & Constructionline
£5m public liability

Expansion joint sealing for Na Gearrannan sites

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

What the job involves on each surface

Brickwork and blockwork joints

Masonry faces are often porous, dusty or crumbly. Faces are prepared and primed wherever the sealant maker calls for it, then seal and tool the joint.

Car park decks and ramps

Water coming through deck joints is the usual first sign. We strip the old seal, prepare the edges and seal again.

About our expansion joint sealing in Na Gearrannan

Every structure moves a little, all the time: they expand in the heat, shrink as they dry, and shift under load. Expansion and movement joints are built in so the structure can move without cracking. We seal and reseal movement joints in walls, panels, decks and floors on sites in Na Gearrannan. We work on brickwork movement joints, blockwork control joints and precast concrete panel joints, and what we’re called in for most is joints packed with grit and debris and hardened, cracked sealant on exposed facades. Sealant applicators who only do sealant are a different proposition from a general trade with a gun in the van: on jobs in Na Gearrannan, preparation and product choice get the time they need.

For outside joints near Na Gearrannan, the Scottish weather sets the timetable: sealant needs a dry joint and a temperature within its range. Internal floors can be done whenever suits the site.

Guaranteed is the last step of every job. You get a 12-month guarantee on our workmanship, and the quote explains what it covers.

The Mastic Doctor team standing beside their branded vans outside an office building
Place
Na Gearrannan (HS2)
Wider area
Na h-Eileanan Siar
Guarantee
A 12-month guarantee
Quote
Quoted before any work starts
Call
01277 525 020
Last updated
3 November 2026

When it isn’t the sealant

A few problems need another trade or a different fix, and we point that out rather than sealing over them:

  • Movement on a scale no sealant is meant to absorb
  • Changing the joint layout or spacing of a structure
  • Crumbling edges that would give a new bead nothing sound to grip

If you’re not sure, just call the office on 01277 525 020 or email drawings and photos and we’ll give you a straight answer before you book.

What we seal

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

Common questions from Na Gearrannan clients

Do you work on the island where Na Gearrannan is?

Yes, Na Gearrannan is within the area we cover. Every Scottish council area is within our area. We plan island jobs around the ferry and the forecast, and bring everything the job needs on the first crossing.

Must our site in Na Gearrannan stop work while the joints are done?

Rarely. Work is phased around your operations. The phasing plan comes with the quote.

How long do sealant joints last?

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

What site paperwork can you supply?

Each site asks for different documents, so tell us what you need and we’ll confirm it when we quote.

When can the area be used after sealing?

The product and site conditions decide that. Some take light use quickly, others need longer to cure, and we confirm it before leaving site.

Does the weather affect the 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. Indoors, the weather is rarely a problem.

Can you handle several sites?

Yes. Multi-site work and planned programmes are a core part of the service, with each site phased to suit its occupants.

Leave it or put it right?

Doing joint resealing alongside other planned works can save on access. Leaking joints need sealing now. Urgent joints now, the rest later, is often the sensible plan. Buildings that aren’t in daily use, such as halls and seasonal premises, may let water in unnoticed, giving water time to get in. Early resealing prevents it.

No two sites price the same: joint size, product, access and site hours all play a part. A fixed quote follows once we understand the job.

What you get with us

  • Fully insured
  • Clear, fixed quotes
  • Sealing commercial buildings since 2005
  • CHAS accredited

See our cost guide or our accreditations.

Owners, agents and contractors

Hotels, schools, healthcare sites, offices and retail units come to us directly as well. We plan around the way the building is used, so the building keeps working while we do.

Building owners and managing agents use us on sealant work across single buildings or whole portfolios around Na Gearrannan. One quote can cover more than one site, which keeps the paperwork simple.

Doing it in-house

There’s also the paperwork. Many sites expect CSCS cards, RAMS and proof of insurance, and our CSCS-carded applicators are used to working under those rules.

For a quick touch-up, site staff may be fine, but anything bigger is another matter: a specialist brings efficiency, a consistent finish and a 12-month guarantee.

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. Then we strip out anything that has failed, prepare every joint and seal it. Where we can, we combine work around Na Gearrannan with other jobs nearby. Tell us how flexible your dates are.

  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 tell you if the design looks wrong for the movement.
  3. Every joint is cleared of the failed seal and any grit packed into it.
  4. Any broken arrises or friable edges are flagged before work goes further.
  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.

Before we start on site

  • Tell us what induction or permit system the site runs
  • Point out parking and an unloading spot
  • Share your working hours and any access restrictions

Ask for a quote

Specifications, drawings and tender packages are welcome with any enquiry, and we will price against exactly what is specified. For smaller jobs, photographs and a description will do.

Get a quick quote

Related advice

Slabs, ramps and loading bays in Na Gearrannan

Na Gearrannan 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. Island jobs, Na Gearrannan among them, are planned around the ferry and the forecast. Photos and joint sizes help us load the right products.

In and around Na Gearrannan, the right filler or sealant for each joint depends on the traffic and the movement it takes. A joint near Na Gearrannan that has lost its sealant lets in water and grit, and the edges suffer next.

Na Gearrannan (Gaelic: Garenin) is in Na h-Eileanan Siar. Commercial clients in Na Gearrannan use us for work on movement joints. Our Na h-Eileanan Siar coverage takes in 87 places.

Business premises anywhere in HS2 are within our area for movement joints. We also cover Carloway (1 mile south-east), Shawbost (4 miles north-east), Breasclete (5 miles south), Bragar (6 miles north-east) and Barabhas (10 miles north-east) for movement joints. Remote and island addresses take more planning, from travel and ferries to the weather, so mention the location when you speak to us on 01277 525 020 or email drawings and photos.

Landmarks near Na Gearrannan

Other landmarks nearby include Gearannon Blackhouse Village (under half a mile north-west). Not far away are Loch Langavat.

Map of Na Gearrannan © OpenStreetMap contributors
Accreditations

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