Shetland Islands · Scotland
Fire-rated sealant in Gremista, Shetland Islands
Fire-stopping gaps in Gremista need attention? We cut out the old, prepare the joints and apply the right sealant.
- Standard silicone or caulk in a fire-stopping gap
- Linear gaps at the head of walls
- Gaps around pipes and cables through fire-resisting walls
Why it’s worth doing now in Gremista
Leaving a gap until a refurbishment comes round can mean years with it open. Sealing the gap now is a contained job on its own 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.
Instead of a standard rate, we look at what your job involves: the amount of work, the old material and the access. The price is agreed before we begin.
Why choose Mr Mastic in Gremista
- Tidy, careful work
- Old sealant always removed completely
- More than 20 years in sealant work
- 4.9 on Google from 180+ five-star reviews
Read what affects the cost or our reviews.
Fire rated sealant in Gremista, done properly
Fire-rated sealant closes the gaps around pipes, cables and frames where they pass through a fire-resisting wall or floor. Each gap is sealed to the product maker’s tested detail for its size and substrate. Common call-outs are for linear gaps at the head of walls and joints picked up in a fire-stopping survey, on door frames, plasterboard & masonry and flats & HMOs.
In a smaller place like Gremista, commercial jobs are more likely to be a hotel, guest house, school, surgery or community hall than an office block. All of them have washrooms, kitchens and fire-rated joints that need looking after.
Whatever the size of the job, you get the same one-year guarantee in Gremista and across the Shetland Islands.

- Place
- Gremista (ZE1)
- Wider area
- Shetland Islands
- Cover
- One year on every job
- Price
- A clear price before we start
- info@mrmastic.co.uk
- Page updated
- 26 October 2026
What else we do in Gremista
What happens on the day
When we get to you, we compare the joints with what we discussed. If we find something unexpected, we talk it through with you first. After that, the work takes from a few hours to a few days, depending on the number of gaps and the access. Outdoor work around Gremista depends on the weather, as sealant needs a dry surface, so an outdoor job can move if the forecast changes. Work indoors is not affected.
- We plan the order of work and access, floor by floor or flat by flat.
- We take out any damaged or unsuitable sealant.
- Gaps are cleaned of dust and loose material.
- We apply and tool the sealant to the product’s tested detail.
- We record what was done and flag anything that needs a different system.
Getting ready for the visit
- Tell us if parking is tricky
- Let us know about stairs, lifts or work at height
- Move anything stored near the joints
Getting a quote
Asking for a quote is easy: tell us what needs doing and where, and roughly how big it is. A few pictures by email make the job easier to understand, and we will come back to you with a quote.
Advice
Your questions about fire rated sealant in Gremista
Do you take on hotel work around Gremista?
Yes, hotels and guest houses are among the places we work. Rooms can be done a few at a time, so the building stays open.
Do you cover smaller places like Gremista?
Yes, Gremista is covered. We work across all of Scotland, islands included, and smaller places are part of that. The journey is planned ahead, so it helps to know about access.
Will it make a mess?
Very little: the area around the joints is protected first, and we tidy up before we go.
What does fire rated sealant cost?
We do not publish prices, because the cost depends on the job: its size, the old material, access and the product needed. We agree the price before any work begins.
Are you insured?
Yes. We’re fully insured, with over 20 years’ experience in sealant work.
Is it OK to seal over old sealant?
No, because it fails. We remove every bit of old sealant first, so the new joint bonds to clean surfaces.
Do you seal gaps around fire door frames?
Yes. Gaps behind architraves are a common job for us. The door and its fittings are a separate job for a door specialist.
Do you carry out fire risk assessments?
No. We follow the requirements from your assessor, designer or building control.
When to call us in Gremista
A lot of fire stopping is out of sight: in ceiling voids, service risers and behind boxing. Because nobody sees it, gaps go unnoticed until an assessor or surveyor looks.
If you can see any of these, it’s time to have the joints looked at:
- Gaps flagged on a fire risk assessment
- Gaps filled with a product that is not fire-rated
- Door frames with gaps between frame and wall
- Linear gaps at the head of walls
If you look after a church, hall or community building such as St Margaret's Roman Catholic Church, gaps around pipes and cables are worth checking after any building work there.
What to look for in a quote
- Which sealant they’ll use, and why
- What guarantee comes with the work
- How long to leave it before use
- Who turns up on the day
What the job involves on each surface
Flats and HMOs
Working in occupied flats needs some planning. Access to flats and common areas is agreed in advance so residents know what to expect.
Service penetrations
New gaps tend to show up where services have been added. We clean out what’s there and reseal to the right depth with backing where the detail needs it.
What affects the quote in Gremista
Call for a quick quote. The main things that affect it are:
- Mould in or behind the old joints
- Which sealant suits the joint
- How easy the joints are to reach
- How many rooms, windows or areas are involved
There are no prices on our website, because each job is priced on what it involves. Call for a quick quote and we’ll talk you through it.
What to tell us for a quote
Photos by email are helpful but not essential. Try to tell us:
- How we’d reach the joints
- The problem you’ve noticed
- Any previous sealing or DIY work
- The address or postcode of the job
Every job is quoted individually, so start by telling us what you need. Just send an email to info@mrmastic.co.uk with the details and send pictures if you have them.
Fire rated sealant around Gremista
If you run a hotel, guest house or holiday let in a coastal place like Gremista, 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 the more notice, the better.
Schools such as Anderson High School are buildings too, and fire-stopping around service openings should be restored whenever new services go in.
Gremista is about 1 mile north of Lerwick, in the Shetland Islands. We provide fire rated sealant to householders, landlords and businesses in Gremista and nearby, as part of our work across the Shetland Islands. Gremista is one of 63 towns and villages in the Shetland Islands where we work for fire rated sealant.
We cover every part of ZE1 for fire rated sealant and the streets around it. Fire rated sealant is available to properties on Gremista Road, Arlanda Yard and Holmsgarth Brae. Other places close to Gremista include Heogan (1 mile east), Lerwick (1 mile south), Sound (2 miles south), Gunnista (2 miles east) and Veensgarth (2 miles west). For island and remote addresses, a little more planning is needed.
Landmarks near Gremista
Around Gremista, our work takes us to homes and buildings near Gilbertson Park and the streets around them. Other landmarks nearby include Montfield Hospital (1.2 miles south) and Shetland Textile Museum (under half a mile south). Open spaces near Gremista include Loch of Kebister and Setter Hill.
Aftercare tips
After the cure time, these simple habits help:
- Include fire stopping when you schedule refits
- Get damaged fire seals looked at promptly
- Keep the record of products and locations with your fire safety documents
- Include hidden areas like risers in routine checks
Any fire seal that is cut or drilled needs resealing to its tested detail. If you need new services through a sealed wall, plan the fire stopping as part of the job.
Small gaps around services are simple to deal with while there are only a few. Over time, more work adds more holes and the list grows.
Landlord and commercial work in Gremista
Businesses can book us for washrooms, kitchens, offices and more. On commercial sites, working times can be discussed when we quote.
In hotels, rooms out of use cost money, so we plan the work room by room around your bookings where we can. We have worked in hotels as well as homes and businesses.
