Scottish Borders · Scotland
Fire-rated sealant in Nisbet, Scottish Borders
Intumescent and fire-rated sealant around gaps, frames and service penetrations for homeowners, landlords and businesses in Nisbet. ARBOMaster approved applicators, fully insured, with a 12-month guarantee.
- Standard silicone or caulk in a fire-stopping gap
- Gaps where walls meet ceilings or slabs
- Joints picked up in a fire-stopping survey
Why deal with it now?
A quick fill with any sealant to hand is not fire stopping. A fire-rated product only performs as tested when it’s installed to its tested detail, which is why we match the product and the method to each gap. When the nearest tradesperson is a drive away, it’s tempting to leave a small leak, but water through a failed joint keeps working away until it’s fixed.
Homes and businesses are quoted the same way: how much there is to do, how we reach it and what it needs. Ask us for a quote and we’ll go through it with you.
What you get with us
- Fully insured
- We leave the area clean and tidy
- Over 20 years’ experience
- Anti-fungal silicone where joints get wet
Read our cost guide and what customers say.
About our fire rated sealant in Nisbet
Ordinary silicone or decorators’ caulk in a fire-stopping gap isn’t a fire-rated seal. We cut out the wrong material and the gap is resealed with a product tested for that use. Common call-outs are for gaps around pipes and cables through fire-resisting walls and old fire sealant that has split or come away, on pipe & cable gaps, plasterboard & masonry and flats & HMOs.
Work in a place like Nisbet is planned ahead, journey included, so it can be fitted around bookings or opening times where possible.
Each job carries a 12-month guarantee.
- Place
- Nisbet (TD8)
- Region
- Scottish Borders
- Guarantee
- A year, on every job
- Price
- Quoted before any work starts
- info@mrmastic.co.uk
- Page updated
- 26 October 2026
How we quote for fire rated sealant
The quote reflects the job in front of us. We take into account:
- Any working-time requirements on site
- Whether the work is at height
- The number of rooms or windows
- Which sealant suits the joint
Leaving a failed joint normally makes the job bigger, not smaller, as water and mould keep getting in. If you’re unsure, send an email to info@mrmastic.co.uk and we will give you an honest view and a quote.
What to tell us for a quote
What to tell us when you ask for a quote:
- Pictures of the joints, sent by email
- Roughly how big the job is
- Access, such as stairs, a lift or height
- The address or postcode of the job
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 email pictures if that is easy.
Looking after it afterwards
To keep the joints looking good and working properly:
- Check whether a sealant can be painted before decorating over it
- Plan fire stopping into any work that goes through walls or floors
- Photograph sealed gaps before they’re covered up
- Make resealing part of every contractor’s brief
Avoid covering a sealed gap with anything that isn’t part of the tested detail. If it needs repair, use the same type of product. Ask us if you are not sure which product was used.
Open gaps do not only matter in a fire: they also let noise, draughts and sometimes pests through. Sealing them early helps on every front.
What else we do in Nisbet
Different surfaces, different methods
Flats and HMOs
In flats and HMOs, the walls and floors between homes and common areas need sealing where services pass through. We work through the gaps on your assessment room by room.
Plasterboard walls
In plasterboard walls, the condition of the board edge matters. Crumbling edges are cleaned back before the sealant goes in.
Commercial buildings in Nisbet
Scotland has its own building regulations, the Building (Scotland) Regulations, with technical handbooks. We install fire-rated sealant to the product’s tested details, though we don’t certify buildings or do fire risk assessments.
Community buildings like Crailing Parish Church are part of the picture too: older buildings that have had new heating or wiring often have service gaps worth checking.
Nisbet is about 13 miles north-east of Hawick, in the Scottish Borders. Every kind of property in Nisbet is covered for fire rated sealant. Every job comes with our 12-month guarantee. 89 places in the Scottish Borders are on our list, from the larger towns to small villages. For nearby work, see our Edinburgh page, about 39 miles away.
We cover every part of the TD8 postcode area for fire rated sealant and the streets around it. Close by, we work in Ancrum (3 miles west), Jedburgh (3 miles south), Roxburgh (4 miles north-east), Heiton (4 miles north-east) and Maxton (5 miles north-west). Within a short drive, we also cover Galashiels (13 miles north-west), Hawick (13 miles south-west), Kelso (6 miles north-east), Selkirk (13 miles west), Wilton (13 miles south-west) and Melrose (10 miles north-west).
Local landmarks in Nisbet
Other landmarks nearby include Queen Mary's House (3.4 miles south-west) and Timpendean Tower (3 miles south-west). The countryside around Nisbet includes Peniel Heugh and Wooden Loch.
Nisbet questions
Will you come out to Nisbet?
Yes, we do. Our work covers the whole of Scotland, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.
Can you do fire rated sealant in Nisbet?
Yes. Our work covers the whole of Scotland, and Nisbet is part of that. You can email us at info@mrmastic.co.uk and let us know what needs doing, and we’ll send you a clear quote.
Do I need to be at home?
For indoor joints, yes, someone needs to let us in. After that, you can carry on with your day.
Where are you based?
Mr Mastic is based in Crawley. We cover Nisbet and the rest of the Scottish Borders.
Do you certify the fire stopping?
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.
What do you put in the joint?
We choose the sealant for the joint, not the other way round. Movement, water and weather all affect the choice, and we will tell you what we’re using.
What does intumescent mean?
An intumescent material expands when it’s heated. Many fire-rated sealants work this way, but not all.
Do you take on fire stopping in schools and offices?
Yes. We work in flats, HMOs, schools, offices and other commercial buildings, including occupied ones. We agree access and the order of work with you first.
Landlord and commercial work in Nisbet
We also work for property managers and facilities teams in Nisbet and across the Scottish Borders. We can quote a run of properties together, and we’re fully insured.
If you manage several properties in or around Nisbet, jobs at different addresses can go on one quote. Send us the addresses and the work at each.
The process
There’s no need to move everything out, only the area right around the joints. Everything nearby is protected, and the job takes a few hours for a handful of gaps, and longer for a whole building for a typical job. Outside jobs in Nisbet need a dry day, because sealant won’t bond to a wet joint, so an outdoor job can move if the forecast changes. Indoor work goes ahead whatever the weather.
- 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.
- 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.
Before we arrive
- Mention any leaks or damp you’ve noticed
- Let us know about earlier repairs to the joints
- Tell us about access, such as stairs, a lift or high-level joints
Getting a quote
It all starts with a short chat. Describe the problem, the location and the size of the job, and we’ll explain how we’d tackle it. Whenever you are ready, send an email to info@mrmastic.co.uk.
Related advice
What we are called out for in Nisbet
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.
These are the problems we’re asked about most:
- Ordinary sealant used where a fire-rated product was needed
- Door frames with gaps between frame and wall
- Gaps left after a refit or conversion
- Fire stopping disturbed by later work
In and around Nisbet, as anywhere, good fire rated sealant starts with a clean, dry, properly prepared joint.
What to look for in a quote
- What the quote includes, VAT included or not
- How much experience the applicator has
- Whether you can choose the colour
- How long to leave it before use