Shetland Islands · Scotland
Fire Rated Sealant in Lerwick
Intumescent and fire-rated sealant around gaps, frames and service penetrations for householders, landlords and businesses in Lerwick. Fully insured, ARBOMaster approved and guaranteed for a year.
- Fire seals that have cracked with movement
- Unsealed gaps around fire door frames
- Open joints along the top of partitions
How to look after the new joints
How long the joints last depends on use and care. Here’s what we suggest:
- Keep general-purpose foam and caulk away from fire-stopping gaps
- Keep the record of products and locations with your fire safety documents
- Photograph sealed gaps before they’re covered up
- Ask every contractor to reseal any fire stopping they disturb
Look at the sealed gaps as part of your routine walk-rounds. Watch for cracking, gaps or seals that have been disturbed and have them put right.
If a fire risk assessment has flagged a gap, do not leave it for the next one. Have it sealed, then keep the record so you can show it was dealt with.
Fire rated sealant in Lerwick
We do not assess buildings or decide what fire stopping is needed; your assessor, designer or building control sets that out. What we do is apply the right product to that specification, properly and neatly. Typical jobs include cracked or shrunken fire-rated sealant and gaps around pipes and cables through fire-resisting walls, across door frames, flats & HMOs and linear gaps.
For a place like Lerwick, the journey and timings are planned in advance, so it can be fitted around bookings or opening times where possible.
We stand behind the work with a one-year guarantee, so you’re covered after we’ve gone.
- Where
- Lerwick (ZE1)
- Region
- Shetland Islands
- Cover
- 12 months on all our work
- Quotes
- A clear price before any work starts
- info@mrmastic.co.uk
- Last updated
- 26 October 2026
Towns and villages near Lerwick
More services for Lerwick
What happens if it’s left?
Leaving a gap until a refurbishment comes round can mean years with it open. On its own, sealing it now is a small job that doesn’t depend on other work. Out of town in Scotland, exposed walls take a lot of weather, and once water gets behind a failed joint, damp in stone or harled walls is slow to dry out.
Doing several joints on one visit is usually more efficient than separate visits, so tell us about everything that needs sealing. You’ll get one clear quote for the whole job.
Why Lerwick customers choose us
- An ARBOMaster approved applicator
- Old sealant always removed completely
- Homes, businesses and hotels
- Tidy, careful work
Take a look at our cost guide and customer reviews.
How it works
The work is kept neat and contained to the area we are working on. The job normally takes a few hours for a handful of gaps, and longer for a whole building, and we tell you how long to leave it before we go. Somewhere like Lerwick may be a longer drive, and the journey is planned ahead. Tell us about tracks, gates, a ferry crossing or anything unusual about getting there.
- We plan the order of work and access, floor by floor or flat by flat.
- Old, damaged or unsuitable sealant is removed.
- Dust and loose debris are cleaned from each gap.
- The fire-rated or intumescent sealant is applied and tooled to the tested detail.
- We record what was done and flag anything that needs a different system.
Preparing for the visit
- Let us know about parking restrictions
- Move anything stored near the joints
- Where the joints are inside, avoid wetting them before we arrive
How to get a quote
Asking for a quote is easy: let us know the job and the location and its rough size. Photos by email help us understand the job, and we’ll take it from there.
Related advice
Common problems we fix in Lerwick
In some buildings the gap was filled with the wrong thing in the first place: general-purpose foam, everyday silicone or caulk where a fire-rated seal was needed. It looks sealed, but it is not fire-rated.
Signs it’s time to call us include:
- Linear gaps at the head of walls
- New service routes left unsealed after building work
- Standard silicone or caulk in a fire-stopping gap
- Seals cut through by electricians, plumbers or data installers
For site and facilities teams at buildings such as Anderson High School, service openings in fire-resisting walls need checking after any refurbishment.
What to look for in a quote
- What happens if they find a problem under the old sealant
- How the colour is chosen
- The length of the guarantee
- Whether VAT is included
Honest limits
We will not take on work that will not last, so here’s what sealant can’t put right:
- Openings too large for sealant, which need batts, boards or another system
- Sign-off of the building, which sits with building control or your assessor
- Assessing a building’s fire safety
If you are not sure, just drop us a line at info@mrmastic.co.uk and we’ll give you a straight answer before booking.
What we seal
- Pipe & cable gaps
- Plasterboard & masonry
- Linear gaps
- Door frames
- Service penetrations
- Flats & HMOs
Can I do it myself?
A careful DIYer can reseal a simple joint, such as a straightforward joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
Not every job suits DIY: high-level joints, fire-rated gaps, external movement joints and big jobs call for the right materials, safe access and experience.
Workplaces and buildings in Lerwick
If you run a hotel, guest house or holiday let in a coastal place like Lerwick, busy months put washrooms and kitchens under pressure, so it’s worth checking the sealant before the busiest weeks. Island jobs need planning around ferries and the weather, so give us as much notice as you can.
Community buildings like St Margaret's Roman Catholic Church are part of the picture too: gaps around pipes and cables are worth checking after any building work there.
Lerwick is in the Shetland Islands. If you need fire rated sealant in Lerwick, please send an email to info@mrmastic.co.uk for a quick quote. We are based in Crawley and cover the Shetland Islands, Lerwick included. Our the Shetland Islands coverage runs to 63 places, Lerwick among them.
We cover every part of the ZE1 postcode area for fire rated sealant. If you need fire rated sealant at a property on High Street, Market Street and Church Road or a nearby road, we can help. Main roads around Lerwick include the A969 and A970, which makes travel easy. If you’re just outside Lerwick, we cover Sound (1 mile south-west), Gremista (1 mile north), Heogan (1 mile north-east), Grindiscol (2 miles south-east) and Gunnista (2 miles north-east). As one of the bigger places in the Shetland Islands, Lerwick has homes, rented property and businesses of every kind. Island and remote addresses take a little more planning, so tell us where you are when you ask for a quote.
Landmarks near Lerwick
In Lerwick, that means homes and buildings near Gilbertson Park and Grand Hotel, among other places. A little further out are Gilbert Bain Hospital (less than half a mile south) and Shetland Museum (under half a mile north-east). Open spaces near Lerwick include Setter Hill and Clickimin Loch.
Your questions about fire rated sealant in Lerwick
Will you come out to Lerwick?
Yes. Lerwick is within the area we cover, which takes in towns, villages and rural addresses. Our work covers the whole of Scotland, including the islands, where work is planned around ferry crossings. Let us know about access, parking and anything unusual about getting there when you book.
Do you work in hotels near Lerwick?
Yes, hotels and guest houses are among the places we work. A room-by-room programme keeps most rooms in use while the work goes on.
What should I tell you?
The location, the problem and the rough size of the job. If you can, email a few pictures.
Is it messy?
No. We work neatly, protect the area around the joints and tidy up afterwards.
Can you tell me how many minutes the seal will last?
Ratings and certification sit with the product’s test evidence and whoever specified the work. Our part is installing the specified product to its tested details and list the locations and products for you.
Can you do several jobs on one visit?
Of course. Combining jobs makes good use of the visit, so mention them when you ask for a quote.
Will you assess my building’s fire safety?
No. We work from the specification you give us, and apply each product to its tested details.
Do you do fire sealant around door frames?
Yes. We seal the gap between the frame and the wall with a suitable fire-rated product following the tested details. The door leaf and its hardware need a door specialist.
Landlord and commercial work in Lerwick
Whether it’s one flat or a portfolio, the work is the same standard: old sealant fully removed, joints prepared properly and a one-year guarantee.
In hotels, rooms out of use cost money, so the work can be planned room by room. Hotel work is part of what we do, alongside homes and businesses.