Shetland Islands · Scotland
Gunnista Fire Rated Sealant
Fire rated sealant for Gunnista and the surrounding area: the right sealant, proper preparation and a neat finish. Call for a quick quote.
- Joints picked up in a fire-stopping survey
- Fire seals that have cracked with movement
- Gaps where walls meet ceilings or slabs
How the visit works
We work through the job in order: protect, prepare, seal, tidy. For most jobs that takes a few hours for a handful of gaps, and longer for a whole building, and the area is left clean. Outdoor work around Gunnista depends on the weather, as sealant needs a dry surface, so external jobs may need to move if the day turns wet. Indoor work goes ahead whatever the weather.
- We go through the gaps on your list or survey and check each one’s size and substrate.
- Anything that isn’t fit for the job comes out, and the gap is cleaned.
- Backing or fill is fitted where the product’s tested detail calls for it.
- The sealant goes in to the depth its detail sets, then it’s tooled off.
- We record the locations and products used for your records.
How to prepare
- For indoor joints, keep the area dry beforehand if you can
- Tell us about any previous sealing or DIY attempts
- Plan for the work area to be out of bounds to pets and children
How to get a quote
Asking for a quote is easy: let us know the job and the location. Photos by email help us understand the job, and we will come back to you with a quote.
Advice
Fire rated sealant for homes and businesses in Gunnista
A gap around a door frame, a linear joint at the head of a wall and a hole round a pipe are each sealed differently. We check the size and the substrate before choosing the product, then apply it to the depth its tested detail calls for. Common call-outs are for old fire sealant that has split or come away and standard silicone or caulk in a fire-stopping gap, on linear gaps, door frames and plasterboard & masonry.
For holiday lets, guest houses and community buildings in or near Gunnista, washroom and kitchen sealant and any fire-rated joints need the same attention as anywhere.
Each job carries a 12-month guarantee, whatever its size.
- Where
- Gunnista (ZE2)
- Wider area
- Shetland Islands
- Cover
- 12 months on all our work
- Price
- Quoted before any work starts
- info@mrmastic.co.uk
- Updated
- 26 October 2026
What affects the quote in Gunnista
We quote each job individually. These are the things that affect it:
- How much there is to do
- Which sealant suits the joint
- The number of rooms or windows
- How easy the joints are to reach
There are no prices on our website, because the cost depends so much on the job itself. Call for a quick quote.
What to tell us for a quote
Photos help, but a description is a good start. Please mention:
- The problem you’ve noticed
- How many joints, rooms or windows are involved
- If someone has resealed it before
- The address or postcode of the job
Need a quote? Please email us at info@mrmastic.co.uk with a few details. We’ll explain what we’d do and give you a clear quote before work begins.
Your questions about fire rated sealant in Gunnista
Is Gunnista within the area you cover?
Yes. Gunnista is within the area we cover, which takes in towns, villages and rural addresses. We work across all 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.
How do Scotland’s building regulations apply to fire-rated sealant in Gunnista?
Building work in Scotland comes under the Building (Scotland) Regulations and their technical handbooks. Fire-rated sealant has to go in to the product’s tested details, and we follow them. We do not certify buildings or do fire risk assessments; your assessor or building control can tell you what’s required.
Are you insured?
Yes, we’re fully insured.
Can tenants book the work?
We can work for tenants, landlords or agents. Get your landlord’s agreement first.
What do you need from me for a quote?
Just the basics: the address or postcode, what’s wrong and any access issues. Then send an email to info@mrmastic.co.uk.
What does intumescent mean?
Fire-rated sealant covers any sealant tested for use in fire stopping. Intumescent ones swell in heat, and they’re one option among several. The specification and the tested detail decide which is used.
Can you fill the gap behind a fire door frame?
Yes. The joint between frame and wall is sealed with a fire-rated sealant following the tested details. The door, its seals and closer are for a door specialist.
Can you quote for more than one area?
Yes. More than one area can be quoted together.
Honest limits
To be straight with you, there are a few things sealant will not fix:
- Walls or floors that weren’t built to resist fire
- Certifying a building or signing off its fire safety
- Fire risk assessments, which need a qualified assessor
If you’re not sure, just email us at info@mrmastic.co.uk and we will give you a straight answer.
Joints and surfaces we work on
- Door frames
- Plasterboard & masonry
- Pipe & cable gaps
- Flats & HMOs
- Service penetrations
- Linear gaps
Can I do it myself?
Too much sealant is as bad as too little. A thick, smeared bead looks untidy and doesn’t move well, and getting the depth right matters as much as the look.
A DIY attempt does not rule out a professional job. We remove it and do the joint properly, so just mention it when you contact us.
Keeping the joints in good condition
Simple care keeps the joints in good condition. We recommend:
- Do not fill fire-stopping gaps with ordinary foam or silicone
- Photograph sealed gaps before they’re covered up
- Make resealing part of every contractor’s brief
- Do not paint over fire sealant until it has cured
Leave the sealant to cure fully before painting near it. Some fire-rated sealants can be painted and some can’t.
A flagged gap shouldn’t wait for the next assessment. Have it sealed, then keep the record.
Other services in Gunnista
What the job involves on each surface
Plasterboard walls
Many fire-resisting walls in flats, offices and conversions are plasterboard. The sealant has to be one tested in plasterboard for the gap we are sealing.
Linear gaps
A linear joint may need to allow for movement as well as fire. We choose a product and depth that suit the gap and the movement from the manufacturer’s details.
What fire rated sealant looks like in Gunnista
If you run a hotel, guest house or holiday let in a coastal place like Gunnista, 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.
If you look after a building such as Anderson High School, gaps opened by contractors for new cabling are a common finding in schools and offices.
Gunnista is in the Shetland Islands. For fire rated sealant in and around Gunnista, please drop us a line at info@mrmastic.co.uk for a quick quote. We’re based in Crawley and cover the Shetland Islands, Gunnista included. We cover 63 towns and villages across the Shetland Islands, large and small.
Jobs for fire rated sealant in ZE2 works the same way as everywhere else we cover. Close by, we work in Heogan (1 mile west), Gremista (2 miles west), Grindiscol (2 miles south), Lerwick (2 miles south-west) and Sound (3 miles south-west). Island and remote addresses take a little more planning, so tell us where you are when you ask for a quote.
Landmarks near Gunnista
Nearby you will also find Shetland Museum (2 miles south-west) and Montfield Hospital (2.2 miles south-west). For a walk, there’s Loch of Aith.
What we’re called out for in Gunnista
Gaps around door frames are easily missed. The gap between the frame and the wall is hidden behind the architrave, so it can be left open when a door is replaced.
These are the problems we are asked about most:
- Door frames with gaps between frame and wall
- Fire seals that have cracked with movement
- Seals cut through by electricians, plumbers or data installers
- New service routes left unsealed after building work
For buildings such as St Ola's Church and burial-ground, older buildings that have had new heating or wiring often have service gaps worth checking.
Comparing quotes
- Whether the sealant suits the joint
- What happens if they find a problem under the old sealant
- Who turns up on the day
- Is the old sealant removed completely?