Scottish Borders · Scotland
Nisbet External Mastic
Specialist external mastic for Nisbet: the right sealant, proper preparation and a neat finish. Ask us for a quick quote.
- Joints where the bead has come unstuck
- Weeds or debris growing in open joints
- Rain getting behind render or cladding at a joint
External mastic in Nisbet, done properly
Movement joints let brickwork, render and cladding expand and shrink without cracking. Its sealant has to flex with the building, season after season, and when it fails, the wall takes the strain and water finds a way in. If you are dealing with rigid filler in a joint that should flex and failed sealant between panels on a façade, we can help, on concrete & block, joints between brick and frames and render & cladding joints alike.
Across smaller places in Scotland, stone and harled cottages, farm buildings and newer houses often stand exposed to wind and rain. Outside joints on exposed walls work hard, so they need a sealant that moves with the building.
We guarantee the work for a year. If something is not right with it in that time, tell us and we will put it right.
- Place
- Nisbet (TD8)
- Wider area
- Scottish Borders
- Cover
- 12 months on all our work
- Quotes
- Quoted before any work starts
- info@mrmastic.co.uk
- Page updated
- 26 October 2026
Walls and rooflines in Nisbet
Plenty of Scottish homes have harled walls, and joints where harling meets other materials need a sealant that can grip and flex. Under the Repairing Standard, private landlords in Scotland have to keep homes wind and watertight, and failed outside joints work against that.
Homes close to Crailing Parish Church include some older properties, and the joints between older walls, newer extensions and the roofline need a sealant that can move. In and around Nisbet, as anywhere, good external mastic starts with a clean, dry, properly prepared joint.
Nisbet is about 13 miles north-east of Hawick, in the Scottish Borders. We provide external mastic to homes and businesses in Nisbet, as part of our work across the Scottish Borders. Our area takes in 89 places across the Scottish Borders, from the larger towns to small villages. Our Edinburgh page covers work nearby.
Here we cover the TD8 postcode area for external mastic. Other places close to Nisbet include Ancrum (3 miles west), Jedburgh (3 miles south), Roxburgh (4 miles north-east), Heiton (4 miles north-east) and Maxton (5 miles north-west). We also work in nearby towns such as 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).
Near you in Nisbet
A little further out are 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.
Quotes for external mastic in Nisbet
The quote reflects the job in front of us. We look at:
- When we can work, for business premises
- Whether there’s mould to deal with
- The product the joint needs
- How easy the joints are to reach
No two jobs are quite the same, so each one gets its own quote. Size, access and the product the joint needs all play a part, and we’ll explain the quote if you ask.
What to tell us for a quote
When you call or email, it’s useful to know:
- The problem you’ve noticed
- The address or postcode of the job
- If someone has resealed it before
- If it’s domestic, commercial or a hotel
For a quote, email us at info@mrmastic.co.uk and tell us where the job is and what the problem looks like. We will give you a clear price before any work starts.
Surface by surface
Cladding and façade panels
Panels heat up and cool down quickly, so the joints work hard every day. The sealant is chosen with that in mind.
Concrete and blockwork
Blockwork and concrete shrink over time and move with the seasons. We reseal their joints with backing rod and a flexible product.
Also in Nisbet
Common questions in Nisbet
Do you cover smaller places like Nisbet?
Yes, we do. Our work covers the whole of Scotland, and smaller places are part of that. Longer journeys are simply planned in advance.
Is external mastic in Nisbet guaranteed?
Every job comes with our 12-month guarantee, wherever it is. We’re fully insured, and an ARBOMaster approved applicator.
What colours does the sealant come in?
We aim for a joint that suits the wall rather than one that jumps out. Colour is agreed with you before we begin, matched as closely as the range allows.
Are you an approved applicator?
Yes. We hold ARBOMaster approved applicator status and we’re fully insured too.
Can you reach joints on upper floors?
It depends on the building. We work on joints that can be reached safely. Tell us about the building and we’ll confirm what access is needed.
Does someone need to be in?
It depends on the job. Inside work needs someone to give us access, while outside work can sometimes be arranged differently.
Do you use backing rod?
That is backing rod, a closed-cell foam. It keeps the sealant at the right depth and bonded to the sides only so it can flex with the joint.
Should I point up the gap in my brickwork?
No, not where the gap is a movement joint. Filling it with mortar defeats its purpose and can lead to cracking. We will reseal it with a flexible sealant.
What we do, step by step
A visit follows a simple pattern: we check the joints, mask and protect the surrounding surfaces, carry out the job and clear up. Most jobs take a few hours for a handful of joints, longer for a whole elevation. Outdoor work around Nisbet 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 by walking round the building and agreeing the joints and the access.
- We cut out the old mastic and rake out anything in the joint.
- Joint faces are cleaned back and primed if the sealant needs it.
- Backing rod sized to the joint goes in to set the depth.
- The exterior sealant is applied, tooled and checked along its length.
Getting ready for the visit
- Tell us if parking is tricky
- Plan for the work area to be out of bounds to pets and children
- On commercial sites, let us know about site rules
Ask for a quote
For external mastic in Nisbet, drop us a line at info@mrmastic.co.uk. Tell us what the problem is and where, and you’ll get a clear quote before any work starts.
Read more
Aftercare tips
Simple care keeps the joints in good condition. We recommend:
- Show decorators and builders where the movement joints are
- Never let anyone fill a movement joint with mortar
- Check external joints each spring
- Deal with leaking gutters that soak the joints below
Look over the joints once a year, ideally after winter. Splits, gaps at the edges or plants in the joint are early warning signs.
Leave a failed movement joint and water keeps getting into the wall. Over time it can mean damp inside, stained render or frost-damaged brick.
Can I do it myself?
Not every job suits DIY: high-level joints, fire-rated gaps, external movement joints and big jobs call for the right materials, safe access and experience.
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.
Work for landlords, hotels and businesses
Letting agents often deal with us directly. Tell us the address, the job and how access works and we will give you a quote.
We work for landlords and agents as well as householders. Sealant work between tenants keeps a property looking cared for before the next move-in.
Honest limits
Before booking, it’s worth knowing the limits too:
- Cracked brickwork or render that needs a builder or plasterer
- Damp that is not coming from the joint
- Adding movement joints to masonry that has none
If you are not sure, just send an email to info@mrmastic.co.uk and we’ll give you a straight answer.
Joints and surfaces we work on
- Render & cladding joints
- Copings & trims
- Concrete & block
- Façade panels
- Brickwork movement joints
- Joints between brick and frames