Na h-Eileanan Siar · Scotland
Fire-rated sealant in Sandwick, Na h-Eileanan Siar
Fire rated sealant in Sandwick from a team with over 20 years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Fire seals that have cracked with movement
- Seals cut through by electricians, plumbers or data installers
- Joints picked up in a fire-stopping survey
DIY versus a professional finish
If you’ve already had a go yourself, that is fine. We remove it and do the joint properly.
A careful DIYer can reseal a simple joint, like a short, easy-to-reach joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
Fire rated sealant in Sandwick
Bigger jobs can be worked through in stages, flat by flat or floor by floor, noting the locations and products as we go. It gives you a list to keep with the building’s fire safety documents. If you are dealing with gaps left after a refit or conversion and joints picked up in a fire-stopping survey, we can help, whatever the surface.
For holiday lets, guest houses and community buildings in or near Sandwick, the washrooms and kitchens need the same care as any city building, and fire-rated joints should be kept in good order.
Each job carries a 12-month guarantee, whatever its size.
- Where
- Sandwick (HS1, HS2)
- Region
- Na h-Eileanan Siar
- Cover
- 12 months on all our work
- Quotes
- A clear price before we start
- info@mrmastic.co.uk
- Page updated
- 26 October 2026
Nearby places to Sandwick
Other services in Sandwick
Honest limits
To be straight with you, some problems need a different trade:
- Assessing a building’s fire safety
- Fire doors that need new seals, closers or hardware
- Construction that doesn’t provide fire resistance on its own
If in doubt, drop us a line at info@mrmastic.co.uk and we’ll say what we think before booking.
What we seal
- Plasterboard & masonry
- Door frames
- Flats & HMOs
- Pipe & cable gaps
- Linear gaps
- Service penetrations
What happens on the day
At the end, we look at the finished work together and explain the cure time. The work normally takes a few hours for a handful of gaps, and longer for a whole building, depending on the amount of work. Outdoor work around Sandwick depends on the weather, as sealant needs a dry surface, so external jobs may need to move if the day turns wet. Work indoors isn’t affected.
- We start with the survey or action list, checking the size and surfaces of every gap.
- Anything that isn’t fit for the job comes out, and the gap is cleaned.
- We put in whatever backing or fill the product detail specifies.
- 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.
Before we arrive
- Plan for the work area to be out of bounds to pets and children
- On commercial sites, let us know about site rules
- Clear the area around the work
Getting a quote
The more we know about the job, the more useful the quote. Let us know the location, the problem and roughly how many joints, and add pictures by email if you can.
Read more
Sandwick questions
Do you work in hotels near Sandwick?
Yes, hospitality work, including hotels, is part of what we do. Jobs can be programmed room by room, with out-of-hours working possible to arrange.
Do you cover smaller places like Sandwick?
Yes, we do. We work across all of Scotland, islands included, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.
Can you seal over the old sealant?
No, and we never do. It may look fine at first, but the new bead soon lifts. Removing the old sealant completely is the only lasting way.
What information do you need?
Only a few details: the address or postcode, what’s wrong and any access issues. Then email us at info@mrmastic.co.uk.
Can I choose the sealant colour?
Yes. Sealants come in white, clear, grey and other colours for many products, and we agree the colour with you before any work starts.
Where is Mr Mastic based?
Our base is in Crawley, and we cover South East England, London and all of Scotland.
Will the old sealant be removed?
Yes, every time. New silicone doesn’t stick to old silicone, so any old material comes out before anything new goes in.
Will you leave a mess?
No. The area is protected while we work and cleaned up afterwards.
Common problems we fix in Sandwick
Sealant applied too thin, without the backing its detail needs, or onto dust will not perform as it was tested. Rushed fire stopping is common, especially where it was squeezed in at the end of a project.
Most people get in touch after spotting one of these:
- Gaps around pipes and cables through fire-resisting walls
- Gaps where walls meet ceilings or slabs
- Standard silicone or caulk in a fire-stopping gap
- Cracked or shrunken fire-rated sealant
If you look after a church, hall or community building such as Stornoway High Church, older buildings that have had new heating or wiring often have service gaps worth checking.
What your quote should include
- Are they insured?
- What the quote includes, VAT included or not
- How hidden problems are handled
- Whether they seal over old material or remove it
What fire rated sealant looks like in Sandwick
If you run a hotel, guest house or holiday let in a coastal place like Sandwick, busy months put washrooms and kitchens under pressure, so it’s worth checking the sealant before the busiest weeks. There are hotels and other places to stay in and around Sandwick. Hotel work can be planned room by room, with out-of-hours working where needed.
Around Sandwick, as everywhere, fire rated sealant is only as good as the preparation behind it.
Sandwick is about 1 mile south-east of Stornoway, in Na h-Eileanan Siar. Homes, rented property, offices and hotels in Sandwick is covered for fire rated sealant, old or new, large or small. Every job comes with our one-year guarantee. Our area takes in 87 places across Na h-Eileanan Siar.
All of HS1 and HS2 is within our area for fire rated sealant. That includes homes and businesses on Stoneyfield, East Street and Olivers Brae. Neighbouring places we cover for fire rated sealant include Plasterfield (1 mile north), Sanndabhaig (1 mile east), Steinis (1 mile north), Stornoway (1 mile north-west) and Branahuie (1 mile east). Island and remote addresses take a little more planning, so please mention your location when you email us at info@mrmastic.co.uk.
Around Sandwick
Nearby you will also find Western Isles Hospital (1.5 miles north-west) and Lewis Loom Centre (1.3 miles west). The countryside around Sandwick includes Loch Àirigh na Lic.
Surface by surface
Service penetrations
Wherever a service goes through a fire-resisting wall or floor, there’s a gap around it. The sealant is chosen for what passes through and how wide the gap is.
Door frames
A door can only do its job if the gap behind its frame is sealed too. We seal that gap with a fire-rated sealant suited to the frame and wall.
Why it’s worth doing now in Sandwick
Sealant is not the fix for every opening. Big openings, bundles of cables and plastic pipes may need batts, collars or wraps instead. If a gap is not suitable for sealant, we will tell you. Out of town in Scotland, exposed walls take a lot of weather, and damp in stone or harled walls takes a long time to dry once water gets behind a joint.
Rather than a set price list, we look at what your job involves: the amount of work, the old material and the access. You’ll know the price before we begin.
Why us?
- Any old sealant cut out fully, not covered over
- More than 20 years in sealant work
- ARBOMaster approved applicator
- Homes, businesses and hotels
Read our cost guide and what customers say.
Quotes for fire rated sealant in Sandwick
We quote each job individually. This is what makes a difference:
- The size of the job
- How easy the joints are to reach
- The product the joint needs
- Whether there’s mould to deal with
Leaving a failed joint generally makes the job bigger, not smaller. If you’re not sure whether it needs doing, email us at info@mrmastic.co.uk for an honest opinion and a quote.
Helping us quote
The more you tell us, the more accurate the quote. When you get in contact, it helps to mention:
- Photos by email, if that is easy
- The rough size of the job
- Whether it has been sealed before
- Where the property is
For fire rated sealant in Sandwick, email us at info@mrmastic.co.uk. A short description of the job and where it is helps us quote, and we will agree the price before any work begins.