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

Fire Stopping in Grimsay

Commercial sealant work in Grimsay for contractors, FMs and building owners: fire-rated and intumescent sealing of service penetrations and linear gaps, quoted at a fixed price.

  • Openings left by services added after handover
  • Expanding foam used as fire stopping
  • Unsealed penetrations discovered above suspended ceilings
1
Send details
Tell us about the site, with photos if you have them.
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.
South East, London & Scotland
CHAS accredited
£5m PL insurance

Fire stopping across Grimsay

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

When something else is needed

Not every problem is a sealant problem, and we’d rather tell you before you spend money. It won’t fix:

  • Approving the work on behalf of building control
  • Plastic pipes whose detail calls for a collar or wrap
  • Gaps in walls that were never built as compartment walls

If you’re not sure, just call 01277 525 020 or email the details over and we will give you a straight answer.

Where we work in Grimsay

  • Cable penetrations
  • Pipe penetrations
  • Service gaps in risers
  • Linear gaps at wall heads
  • Joints between fire-resisting walls and floors
  • Small duct penetrations where the tested detail allows

How we handle fire stopping in Grimsay

Opened ceilings and riser doors often reveal service openings nobody sealed. Where the walls and floors already have a fire-stopping specification, we can work to it, matching the product and detail it names. With no specification in place, the first step sits with your designer or fire engineer, not with us. If you have fire seals cut back for extra cables and never reinstated and open linear gaps along the top of fire-resisting walls, we can help, whatever the surface. Facilities teams, main contractors and managing agents in Grimsay tend to want the same three things: a clear scope, tidy work and joints that don’t fail again.

In smaller Scottish places like Grimsay, buildings with fire-resisting walls typically include schools, care homes, hotels and health centres. Those penetrations are closed with the product the specification names, built up as tested.

Every job is signed off with a 12-month guarantee. The promise is simple: if our work fails within that year, we put it right.

Place
Grimsay (HS7)
Region
Na h-Eileanan Siar
Guarantee
12 months on every job
Quote
Quoted before any work starts
Phone
01277 525 020
Updated
3 November 2026
The Mastic Doctor team beside their liveried vans in front of an office building

Keeping the joints sound

Once the work is signed off, a little attention goes a long way:

  • Agree the fire-stopping specification before services go in
  • Put resealing into every M&E and fit-out package
  • Check with the data sheet before painting over fire sealant
  • Treat an open penetration as a priority repair

New services after handover are a common way fire stopping gets breached. Building it into each contractor’s sign-off keeps the walls intact.

Specify fire stopping early on refits, not as an afterthought. Details can then be picked to suit the actual pipes, cables and ducts, and the work runs in step with the M&E.

When to call us in Grimsay

Some service penetrations were never sealed at all. They come to light during inspections, refits or when another trade lifts a tile.

These are often picked up first by site or facilities staff:

  • Expanding foam used as fire stopping
  • Open linear gaps along the top of fire-resisting walls
  • Seals that don’t match their tested detail
  • Old intumescent sealant that has split away

For buildings in and around Grimsay, fire-rated sealant is installed where it is specified, to the manufacturer’s tested detail.

What to look for in a quote

  • Whether primer will be used where the manufacturer specifies it
  • Will RAMS and insurance details be available?
  • Proof of insurance
  • Is depth set with backing rod, or bond-breaker tape in shallow joints?

Choosing a commercial sealant contractor

General trades versus a specialist

What you see is the finished bead, but most of the work is hidden. Backing rod, primer where specified and a joint designed to move with the building are where general trades tend to cut corners.

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

On site: what to expect

Our CSCS-carded applicators arrive with the sealants, primers and backing rod the job calls for. Joint faces are cleaned back to sound, dry surfaces, primer goes on where the manufacturer specifies it, and the sealant is tooled off neatly. For work around Grimsay, we aim for one trip, so photographs, sizes and a full list matter. External joints need a dry spell as well.

  1. We start with your penetration schedule, drawings or specification.
  2. We plan the sequence of floors, risers and voids with you.
  3. Each opening is checked for wall or floor type, service, gap and depth.
  4. Unsuitable material is removed and the opening cleaned first.
  5. The specified backing and sealant go in to depth and are finished neatly.
  6. We tell you about openings that need a different product.

Before we start on site

  • Share the asbestos register for older buildings
  • Tell us what induction or permit system the site runs
  • Make sure the joints can be reached

Quotes

If there’s a specification, drawings or a tender package, send it with your enquiry, and we’ll price against exactly what is specified. For smaller jobs, photos and a description will do.

Ask for a quote

Advice

Service penetrations in Grimsay buildings

Under the Scottish non-domestic Technical Handbook, clause 2.1.14, penetrations should be fire stopped to at least the wall or floor’s fire resistance duration, and products should be tested for their end use. We install fire-rated sealant to that tested detail where it is specified. Work on Grimsay has to fit the ferry timetable and the forecast. We need the specification and a count of penetrations before we sail.

Large healthcare estates like Uist and Barra Hospital (5.8 miles north-west of Grimsay) change their services often, so penetration seals are worth checking after M&E work.

Grimsay (Gaelic: Griomasaigh) is in Na h-Eileanan Siar. We send applicators to Grimsay for service penetrations, handled exactly as we handle every other area. Grimsay is one of 87 places in Na h-Eileanan Siar on our list.

We take on service penetrations across the HS7 postcode area, whatever the building. Main routes into Grimsay include the B891, which helps when planning parking and deliveries for the job. 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). 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.

What’s near Grimsay

Well-known places in the area include Museum nan Eilean Lionacleit (3.1 miles west) and Borve Castle (3.7 miles north-west). The countryside around Grimsay includes Loch Langavat and Stiaraval.

Map of Grimsay © OpenStreetMap contributors

Questions we’re asked in Grimsay

Do you take on work at healthcare sites like Uist and Barra Hospital?

Yes, hospitals are one of the sectors we cover. Each area is agreed with the ward or department and the estates team in advance.

How do the Scottish rules apply to fire-rated sealing in Grimsay?

The non-domestic Technical Handbook, clause 2.1.14, expects a penetration to keep at least the wall or floor’s fire resistance period, with proprietary products tested for the use they’re put to. Design sits with the designer and the verifier; installation to the tested detail is our part.

Can staff carry on working while you are here?

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

Do you cover Grimsay?

Yes. Grimsay is in our area and the rest of Na h-Eileanan Siar. For a quote, ring 01277 525 020 or send photos by email.

Do you offer coloured sealant?

Often, yes. Sealants are made in a wide range of standard colours, and matching to RAL references or nearby finishes is commonly requested. We will confirm the colours available for the specified product.

How do I request a quote?

The quote form is the simplest route, though you can also ring 01277 525 020 or use the quote form. Photos, drawings or a joint schedule help us quote quickly.

What site paperwork can you supply?

Each site asks for different documents, so list what you need, whether RAMS, insurance or CSCS details, and we’ll confirm with the quote.

Owners, agents and contractors

If you look after buildings for someone else, clear figures and clear communication matter. We quote a fixed sum, confirm the scope and walk the finished work with you or your representative, plus a 12-month guarantee.

Agents, factors and owners’ representatives all follow the same route: send the details, accept a fixed quote, and we carry out and guarantee the work. We can agree access arrangements and keyholder contacts beforehand.

Accreditations

Trusted. Accredited. Insured.