Shetland Islands · Scotland
Fire-rated sealant in Haroldswick, Shetland Islands
Intumescent and fire-rated sealant around gaps, frames and service penetrations in Haroldswick, with a 12-month guarantee on every job. Ask us for a quote.
- Gaps filled with a product that is not fire-rated
- Seals cut through by electricians, plumbers or data installers
- Sealant items on a fire risk assessment action list
How we handle fire rated sealant in Haroldswick
Until it’s heated, intumescent sealant behaves like an ordinary sealant; in a fire it expands into the joint. The right product depends on the gap size, the substrate and what passes through, so we follow the tested detail for each one. Common call-outs are for joints picked up in a fire-stopping survey and fire stopping disturbed by later work, across linear gaps, service penetrations and door frames.
In a smaller place like Haroldswick, commercial jobs are more likely to be a hotel, guest house, school, surgery or community hall than an office block. Each needs sound sealant in its washrooms and kitchens, and fire-rated joints kept in good order.
All our work comes with a one-year guarantee, wherever you are in the Shetland Islands.
- Place
- Haroldswick (ZE2)
- Wider area
- Shetland Islands
- Cover
- 12 months on all our work
- Quote
- A clear quote up front
- info@mrmastic.co.uk
- Updated
- 26 October 2026
How the visit works
Most of a good job is in the preparation, so that’s where we spend the time. Every joint is cleaned and dried before new material goes in. In total, it normally takes from a few hours to a few days, depending on the number of gaps and the access. Around Haroldswick, distance and access matter more than parking. Let us know how to find you and how to reach the joints.
- Access to each area is agreed so the work can run in order.
- We take out any damaged or unsuitable sealant.
- Dust and loose debris are cleaned from each gap.
- We apply and tool the sealant to the product’s tested detail.
- Locations and products are written up and any gaps unsuitable for sealant are flagged.
Before we arrive
- For indoor joints, keep the area dry beforehand if you can
- Tell us about access, such as stairs, a lift or high-level joints
- Clear items away from the joints we’re working on
Getting a quote
Every job is quoted individually. Simply drop us a line at info@mrmastic.co.uk and describe the job and send photos if you have them.
Read more
Fire rated sealant around Haroldswick
For seaside hotels, guest houses and holiday lets around Haroldswick, heavy use in the busy months is hard on washroom and kitchen sealant, and any building work there should leave fire-rated joints made good. Work on the islands has to be planned around ferry crossings and the weather, so the more notice, the better.
Community buildings like St John's Church are part of the picture too: gaps around pipes and cables are worth checking after any building work there.
Haroldswick is in the Shetland Islands. From the centre of Haroldswick to the outskirts, we cover fire rated sealant for every kind of property, from flats and houses to offices and hotels. Our area takes in 63 places across the Shetland Islands, large and small.
Every address in ZE2 is covered for fire rated sealant, from the main roads to the quietest streets. If you need fire rated sealant at a property on Taftens, Nordabrake and Brakefield Crescent or a nearby road, we can help. Being close to the B9087, Haroldswick is easy for our applicators to reach. If you’re just outside Haroldswick, we cover Baltasound (3 miles south-west), Clivocast (8 miles south), Cullivoe (9 miles south-west), Houbie (14 miles south) and Camb (15 miles south-west). Remote and island addresses need a little more planning, so please mention your location when you email us at info@mrmastic.co.uk.
Near you in Haroldswick
A little further out are Unst Heritage Centre (0.6 miles south-west). Open spaces near Haroldswick include Little Heog and Loomer Shun.
DIY sealant or a professional job?
Some sealant jobs are within reach of a careful DIYer, like a short, easy-to-reach joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
If you do try it yourself, take your time over the preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it fails, we can still redo it.
Why deal with it now?
Doing it once, properly, beats doing it twice. If the details weren’t followed, the seal may need redoing when the building is next checked. Around Haroldswick, water from a failed joint in an older stone home can soak into timber and plaster, which is a far bigger job than the sealant.
The cost depends on the size of the job, how much old material has to come out and how easy the joints are to reach. You will have a clear quote before any work starts.
What you get with us
- More than 20 years in sealant work
- Sanitary silicone with an anti-fungal additive in wet areas
- Homes, businesses and hotels
- 12-month guarantee on every job
When it isn’t the sealant
Before you book, it’s worth knowing the limits:
- Doors that are not fire doors in the first place
- Deciding what fire stopping a building needs
- Sign-off of the building, which sits with building control or your assessor
If in doubt, send an email to info@mrmastic.co.uk and we will say what we think.
Joints and surfaces we work on
- Linear gaps
- Pipe & cable gaps
- Service penetrations
- Door frames
- Flats & HMOs
- Plasterboard & masonry
Landlords, agents and businesses in Haroldswick
If you manage several properties in or around Haroldswick, jobs at different addresses can go on one quote. Send us the addresses and the work at each, and pictures by email help.
Whether it’s one flat or a portfolio, you get the same standard of work: the old material taken out, careful preparation and a 12-month guarantee.
More services for Haroldswick
Different surfaces, different methods
Flats and HMOs
Conversions generally leave a mix of old and new service holes. The gaps on your list are sealed with a fire-rated product and record where they are.
Linear gaps
Long, narrow gaps appear where walls meet slabs and ceilings. They’re sealed with a fire-rated sealant over backing where the detail calls for it.
Signs you need fire rated sealant in Haroldswick
Movement in the structure can open gaps too: a seal that cracks or pulls away leaves a path for smoke. Damage from cleaning, knocks and maintenance adds to it.
The most common problems we see are:
- Joints picked up in a fire-stopping survey
- Unsealed gaps where pipes and cables go through a wall
- Gaps where walls meet ceilings or slabs
- Standard silicone or caulk in a fire-stopping gap
Around Haroldswick, as everywhere, fire rated sealant is only as good as the preparation behind it.
Questions to ask before you book
- What happens if they find a problem under the old sealant
- What insurance they hold
- What product goes in the joint
- How the joint is cleaned and prepared
FAQs for Haroldswick
Is Haroldswick within the area you cover?
Yes, Haroldswick is covered. We work across all of Scotland, islands included, and smaller places are part of that. Longer journeys are simply planned in advance.
Do Scottish building rules affect fire-rated sealant work in Haroldswick?
Scotland has its own building regulations, the Building (Scotland) Regulations, with their own technical handbooks. Whatever the rules, fire-rated sealant has to be installed to the manufacturer’s tested details, and that’s how we fit it. We do not certify buildings or carry out fire risk assessments, so your fire risk assessor or building control will advise on what’s needed.
What’s the difference between intumescent and fire-rated sealant?
Intumescent describes a material that swells in heat. Many fire-rated sealants work this way, but not all.
Is there any odour?
There can be a smell while the sealant cures, but it fades. Opening a window helps.
What fire rating will the seal have?
We don’t give ratings or certificates for our work. Your specification sets the requirement, and we apply a product tested for it with a record of each location.
Do you offer different sealant colours?
We will suggest a colour to suit the surroundings, from white and clear to greys and other shades. The product needed can limit the range.
How long does the job take?
Most jobs take a few hours for a handful of gaps, and longer for a whole building. Your quote will say how long we expect yours to take.
Can new sealant go over the old?
No. New silicone won’t bond to old silicone, and anything trapped underneath, including mould and water, stays there. We remove it all first.