
Fire Stopping in Dunnet
Work needed on a service penetration in Dunnet? We look at it, seal it with the right product and hand it over with a 12-month guarantee.
- Seals disturbed by maintenance and left open
- Improvised or mixed-product fire seals
- Non-fire-rated filler around services
Fire stopping near Dunnet
Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.
Building owners, agents and FMs in Dunnet
We work for building owners and managing agents on sealant work across single buildings or whole portfolios around Dunnet. One quote can cover more than one site, so there’s one set of paperwork to deal with.
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.
Fire stopping for commercial buildings in Dunnet
Penetration seals are fire tested to BS EN 1366-3 and linear joint seals to BS EN 1366-4, with results classified under BS EN 13501-2. That classification, such as EI 60 or EI 120, belongs to the product in its tested arrangement. Reproducing the tested arrangement on site is the part we take care of. We work on small duct penetrations where the tested detail allows, cable penetrations and joints between fire-resisting walls and floors, and the failures we are asked to look at most are fire seals cut back for extra cables and never reinstated and fire stopping installed outside its tested range. One point of contact handles commercial sealant work in Dunnet from the first photos to the final walk-round, whether it’s one building or several.
Travel to smaller places like Dunnet is planned so every penetration is sealed on one trip. Send the specification and photos of the openings, with sizes if you have them.
We sign every job off with a 12-month guarantee. The promise is simple: if the work we did fails within twelve months, we return to fix it.

- Location
- Dunnet (KW14)
- Wider area
- Highland
- Cover
- A 12-month guarantee
- Price
- A fixed quote before we start
- Call
- 01277 525 020
- Updated
- 3 November 2026
Diagnose, treat, sign off
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, the manufacturer’s primer is applied where it’s called for, and the sealant is tooled off neatly. Where we can, we combine work around Dunnet with other jobs nearby. Let us know if your dates have any give.
- We start with your penetration schedule, drawings or specification.
- Access, permits and the order of areas are agreed with the site team.
- Each opening is checked for wall or floor type, service, gap and depth.
- Unsuitable material is removed and the opening cleaned first.
- Backing and fire-rated sealant are installed to the detail and tooled.
- We tell you about openings that need a different product.
Getting the site ready
- Point out any areas we must not close
- Share your working hours and any access restrictions
- Tell us what induction or permit system the site runs
Get a fixed quote
If there’s a specification, drawings or a tender package, send it with your enquiry, and we will price the work to it. For smaller jobs, photographs and a description will do.
Related advice
Nearby places to Dunnet
Also in Dunnet
Common questions from Dunnet clients
Is Dunnet too small for you to travel to?
Not at all: smaller places are covered as well as towns. Our area covers all of Scotland, cities, towns and islands alike. Where we can, we group nearby jobs to make the most of each trip.
How do the Scottish rules apply to fire-rated sealing in Dunnet?
Under Scotland’s non-domestic Technical Handbook (clause 2.1.14), service penetrations should keep at least the wall or floor’s fire resistance duration, using products tested for their end use. Design sits with the designer and the verifier; installation to the tested detail is our part.
Are you CHAS accredited and on Constructionline?
Yes. Mastic Doctor is CHAS accredited and a Constructionline member, which helps with supplier vetting.
Can weather delay the job?
It can, when the joints are outside. Wet joints and cold, damp or frosty conditions stop the sealant bonding properly, so we watch the forecast and rearrange outside work if we have to. Indoors, the weather is rarely a problem.
Do you have public liability insurance?
Yes. Mastic Doctor is fully insured, public liability included.
Do you take on multi-site work?
Yes. Multi-site work and planned programmes are a core part of the service, planned site by site to suit how each building is used.
When can you be on site?
Mention the site’s hours and access windows in your enquiry, and we’ll schedule the work to suit. Our office runs Monday to Friday, 8am until 5pm.
What the job involves on each surface
Drylining partitions
Drylined fire walls are tested in a particular build-up. We check that the product’s detail covers that partition type and board thickness first.
Risers and ceiling voids
Risers and ceiling voids hold most of a building’s service penetrations. Access is often tight, so we agree it with you in advance, including keys, permits and any isolations.
Compartments and services around Dunnet
Scottish guidance (non-domestic Technical Handbook, clause 2.1.14) asks that penetrations match at least the fire resistance period of the element they pass through, with products tested for that end use. Our part is installing the specified fire-rated sealant to its tested detail.
For a hotel such as Northern Sands Hotel, less than half a mile to the south-west of Dunnet, penetration seals are worth checking after any refit or services upgrade. In a building such as Dunnet Church, any service penetration through a fire-resisting wall should be sealed to the specified detail.
Dunnet is about 7 miles east of Thurso, in Highland. Anywhere in KW14, the process is the same: send details, get a fixed quote, we seal, and the work is guaranteed. Dunnet is one of 256 places in Highland on our list for service penetrations.
Business premises anywhere in KW14 are within our area for service penetrations. Nearby places we also cover include Brough (2 miles north), Castletown (3 miles south-west), Scarfskerry (3 miles north-east), Rattar (3 miles north-east) and Murkle (4 miles south-west). For island and remote sites, we plan travel and materials carefully.
Near you in Dunnet
Other landmarks nearby include Westside Croft (0.5 miles north-west) and Castle of Mey (4.5 miles east). For a walk, there’s St John's Loch.
When something else is needed
We check first that sealant really is the fix. It isn’t the answer for:
- Reviewing a building’s overall fire safety
- Writing the fire-stopping specification
- Walls or floors that aren’t fire-resisting to begin with
Not sure which it is? You can ring 01277 525 020 or email a schedule or drawings and we will tell you honestly before you book.
Surfaces we seal
- Service gaps in risers
- Joints between fire-resisting walls and floors
- Small duct penetrations where the tested detail allows
- Linear gaps at wall heads
- Cable penetrations
- Pipe penetrations
Why it’s worth doing now in Dunnet
Leave a penetration open and smoke and fire can cross into the next compartment far earlier than intended. Putting it right is normally a modest job when the openings are accessible. Wait until ceilings close or areas are occupied and the same work becomes harder to reach. Buildings that aren’t in daily use, such as halls and seasonal premises, may let water in unnoticed, so a failed joint has time to cause damage. Early resealing prevents it.
We don’t publish prices, since every building and every scope is different. Call for a quote.
What you get with us
- Work to your specification and the manufacturer’s guidance
- Public liability insurance in place
- Clear, fixed quotes
- 12 months’ guarantee on every job
Maintenance after handover
Once the work is signed off, these steps help:
- Leave fire sealant to cure fully before covering it
- Don’t let anyone top up a fire seal with the wrong product
- Look above ceilings when tiles are lifted for other jobs
- File the specified details where the next contractor can find them
New services after handover are a common way fire stopping gets breached. A short check at the end of each job saves a long hunt later.
Make reporting new openings part of every permit to work in service areas. It costs little and catches breaches early.