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

Floor Joint Sealing contractors in Grimsay

Our CSCS-carded applicators take on floor joint sealing and filling in warehouses, factories and industrial units in Grimsay. Send details for a fixed quote.

  • Scruffy, dirty joint lines on a shop or showroom floor
  • Joint fill separating from the concrete
  • Brittle joint filler breaking up
1
Send details
Photos, drawings or a schedule, or we visit.
2
Get a quote
A fixed price, with what’s included set out clearly.
3
We seal
Failed joints cut out, faces prepared, new sealant laid.
4
Guaranteed
Backed by a 12-month workmanship guarantee.
London, the South East & Scotland
Constructionline member
Fully insured: £5m PL

Floor joint sealing near Grimsay

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

Floor joint sealing for commercial buildings in Grimsay

Across Grimsay and the rest of Na h-Eileanan Siar, it runs the same way: send details, get a fixed quote, we seal, and the work is guaranteed. Approximate joint lengths, a few photographs and a floor plan are enough for a quick quote and a visit can be arranged where that is easier. If you are dealing with filler that has parted from one face and old filler gone hard, cracked or loose, we can help. Sealant applicators who only do sealant are a different proposition from a general trade with a gun in the van: on jobs in Grimsay, preparation and product choice get the time they need.

Travel to smaller places like Grimsay is planned so the work is done in one trip where possible. Photos, approximate widths and what uses the floor help us bring the right materials.

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
Where
Grimsay (HS7)
Region
Na h-Eileanan Siar
Guarantee
12 months on every job
Quote
Quoted before any work starts
Phone
01277 525 020
Page updated
3 November 2026

Traffic, movement and joints around Grimsay

Grimsay is within about 1 mile of the coast. Open joints in coastal car parks and yards let in salt-laden water as well as grit, and edges left open tend to break up faster. Work on Grimsay has to fit the ferry timetable and the forecast. Joint widths, lengths and the traffic over them help us bring the right fillers and sealants.

For an estate such as Uist and Barra Hospital, 5.8 miles north-west of Grimsay, the joints in ramps, decks and long building elevations all need attention over time.

Grimsay (Gaelic: Griomasaigh) is in Na h-Eileanan Siar. We cover Grimsay, and jobs here get the same fixed quote and 12-month guarantee as anywhere else. We work across 87 places in Na h-Eileanan Siar.

Business premises anywhere in HS7 are within our area. With the B891 nearby, Grimsay is straightforward for us to reach. If your building is just outside Grimsay, we cover Creag Ghoraidh (2 miles west), Geirinis (5 miles south-west), Balivanich (5 miles north-west), Baile a' Mhanaich (6 miles north-west) and Locheport (10 miles north). Remote and island addresses take more planning, from travel and ferries to the weather, so give the site location in your enquiry.

Local landmarks in Grimsay

A little further out are Museum nan Eilean Lionacleit (3.1 miles west) and Borve Castle (3.7 miles north-west). Not far away are Loch Langavat and Stiaraval.

Map of Grimsay © OpenStreetMap contributors

Questions we are asked in Grimsay

Is Grimsay inside the area you cover, given it’s on an island?

Yes, Grimsay is within the area we cover. We work across every Scottish council area. We group island work where we can and plan around the crossings.

Is a hospital such as Uist and Barra Hospital somewhere you can work?

Yes. Healthcare sites are among the places we work. Before anything starts, the estates team agrees permits, inductions and infection-control measures with us.

Will you just go over the old sealant?

No, never. Overlaying old sealant is a frequent cause of early failure, so it all comes out first.

How long does a typical visit take?

It depends on the scope, but the work typically takes anything from a day for one loading bay to several days for a large floor, split into phases. Larger or phased jobs take longer, and we will give you a timescale with the quote.

Why has the filler pulled away from one side?

Separation typically comes from slab shrinkage, poor preparation or the wrong product. We look at which it is before recommending anything.

What information helps you price floor joint sealing?

Approximate metres of joint, photographs of typical and worst areas, and a floor plan are usually enough for a quick quote. For larger floors, a site visit is often best, and you can speak to us on 01277 525 020 or send photos by email to arrange it.

Will your applicators have CSCS cards?

Yes. Should the site need card details in advance, tell us and we will confirm them with the quote.

Common problems we fix in Grimsay

A slab keeps shrinking for a long time after it is cast, and saw-cut joints give that shrinkage a planned place to crack. As the panels contract, the joints widen, and a filler placed early can part company with one face.

Things that typically lead to an enquiry:

  • Broken arrises where pallet trucks cross
  • Trucks and loads jolting over damaged joints
  • Failing joints at loading bays and dock doors
  • A gap opening alongside old joint filler

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

What your quote should include

  • Their pre-qualification and accreditations
  • How they’ll work around occupants
  • Is the sealant right for the movement and the substrate?
  • Their public liability cover

Our contractor checklist

Work for main contractors and building owners

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. Grimsay can form part of a wider programme across Na h-Eileanan Siar.

Doing it in-house

For most general trades, sealant is a sideline. A specialist prepares properly, controls joint depth and picks a product with the right movement class.

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

When something else is needed

Part of a good diagnosis is knowing where sealant stops. We will tell you if the real problem is one of these:

  • Worn screed or surface finishes
  • Broken concrete either side of the joint
  • Unstable slabs moving under traffic

If you are not sure, just give us a call on 01277 525 020 or send details through our quote form and we’ll give you a straight answer.

Where we work in Grimsay

  • Forklift and pallet-truck routes
  • Saw-cut induced joints
  • Retail and showroom floors
  • Construction joints
  • Loading bays
  • Joints along racking aisles

On site: what to expect

A typical day starts with protection: tape along each joint edge and covers over finishes, stock and equipment close by. The work itself normally takes anything from a day for one loading bay to several days for a large floor, split into phases, and we clear our waste as we work. For work around Grimsay, we aim for one trip, which is why we ask for photos and a full list first. Outside work also needs a suitable weather window.

  1. A floor survey records every joint, its edges and what crosses it.
  2. The treatment and the zones are set out in a fixed quote.
  3. Each joint is cut or routed back to clean, sound concrete.
  4. Dust is vacuumed out and primer applied where specified.
  5. The joint is filled to its specified depth and trimmed level.
  6. We hand each phase back when it can take traffic.

Before we start on site

  • Warn occupants and staff about the work
  • Send any specification or drawings in advance
  • Share your working hours and any access restrictions

Request a quote

Photos, drawings or a schedule of the joints are often enough for a fixed quote. If the job needs a look first, we will arrange a site visit.

Ask for a quote

Advice

Looking after the joints

Your facilities or cleaning team can help the joints last. Share these points with them:

  • Hold traffic back until the product has cured
  • Clear packed debris from open joints regularly
  • Tell us about strong cleaning chemicals before we quote
  • Check joint lines on busy aisles regularly

We will give you a time before trucks can run over the new joints, and it’s worth enforcing. Cones or barriers stop the first driver cutting the corner.

While the concrete edges are intact, it’s a filling job. After the edges go, repairs come into it and that takes longer and closes areas for longer.

Accreditations

Trusted. Accredited. Insured.