Scottish Borders · Scotland
External Mastic in Tweedbank
Sealing brickwork movement joints, render, cladding and façade joints in Tweedbank, with a one-year guarantee on every job. Ask us for a quote.
- Weathered mastic that no longer stretches
- Plants rooting in failed movement joints
- Rigid filler in a joint that should flex
Common questions in Tweedbank
Is Tweedbank in your area for external mastic?
Yes. Our work covers the whole of Scotland, and Tweedbank is part of that. Just drop us a line at info@mrmastic.co.uk with a few details of the job, and we’ll give you a clear quote.
Is Tweedbank within the area you cover?
Yes. Tweedbank is within the area we cover, which takes in towns, villages and rural addresses. Our work covers the whole of Scotland. Just mention lanes, gates or anything else about the route when you book.
How long does external mastic take?
A typical job takes a few hours for a handful of joints, longer for a whole elevation, including preparation and clearing up. We will confirm how long when we quote.
Is there a guarantee?
Yes, for a year. If anything isn’t right with the work within the year, let us know and we will sort it.
Where do you work from?
Our base is Crawley. Our area covers South East England, London and Scotland.
Do you do commercial work?
Yes. We work in offices, washrooms, hotels and other commercial premises, as well as homes. We can talk about working times when we quote.
What’s an expansion joint in brickwork?
Walls move with heat, cold and moisture, and planned joints take up that movement. The gap is sealed with a flexible sealant over backing rod.
How often do external joints need resealing?
That depends on the wall, the weather and the movement. Look for splits, hardening or edges coming away, and reseal at that point.
External mastic in Tweedbank, done properly
For buildings in Tweedbank, we reseal external joints of all kinds, from brick movement joints to cladding panels. The preparation is the same whatever the wall: clean, sound faces and a controlled depth. If you have brick movement joints where the sealant has split and gaps where render, brick and frames meet, we can help.
Stone walls need a stone-friendly sealant, as acetoxy products can attack some stone. On newer homes, the movement joints and roofline trims are what need watching.
Whatever the size of the job, you get the same 12-month guarantee in Tweedbank and across the Scottish Borders.
- Where
- Tweedbank (TD1, TD6)
- Wider area
- Scottish Borders
- Cover
- A year, on every job
- Quotes
- A clear price before work begins
- info@mrmastic.co.uk
- Last updated
- 26 October 2026
Towns and villages near Tweedbank
Also in Tweedbank
Why deal with it now?
Resealing a run of joints in one go is usually better than patching one at a time. They’ve weathered the same way, and access only has to be arranged once. In a place like Tweedbank, small leaks are easy to put off, but water behind a failed seal does the most damage when nobody’s watching.
What you pay reflects the work, not a rough estimate. That is why we ask about the job first and agree the price before starting.
Why Tweedbank customers choose us
- Anti-fungal silicone where joints get wet
- Neat joints and a tidy finish
- Colour picked to suit the job
- Full insurance on every job
Honest limits
We will not take on work that won’t last, so here’s what sealant can’t put right:
- Cutting new joints into brickwork, which is building work rather than sealant work
- Structural movement, which needs a surveyor or engineer
- Damp that isn’t coming from the joint
Not sure which it is? You can drop us a line at info@mrmastic.co.uk and we will tell you honestly.
Where we work in Tweedbank
- Copings & trims
- Brickwork movement joints
- Render & cladding joints
- Façade panels
- Joints between brick and frames
- Concrete & block
Looking after it afterwards
No joint lasts for ever, but care makes a real difference. A few tips:
- Tell anyone working on the walls about the movement joints
- Keep water from gutters off the wall
- Wash walls gently around the sealant
- Have failed joints looked at early
Keep pressure washers away from the sealant. High-pressure water can lift the edges and let water in behind.
If you can see gaps, plants or bare sections in a joint, have it checked. Earlier resealing means a smaller job and a better result.
How it works
The work is kept neat and contained to the joints we are treating, so you can carry on as normal. Expect the work to take anything from a few hours to several days, depending on the building. Outdoor work around Tweedbank depends on the weather, as sealant needs a dry surface, so an outdoor job can move if the forecast changes. Indoor work goes ahead whatever the weather.
- Each joint is checked and the colour of the new sealant agreed.
- Failed sealant is removed back to clean, sound faces.
- Backing rod goes in so the sealant can stretch between the two faces.
- We prime the faces where required.
- A low-modulus exterior sealant is gunned in and tooled to a neat finish.
Preparing for the visit
- For indoor joints, keep the area dry beforehand if you can
- Mention any leaks or damp you’ve noticed
- Keep children and pets away from the work area
Ask for a quote
Getting a quote is simple: let us know the job and the location, and roughly how big it is. A few pictures by email make the job easier to understand, and we will take it from there.
Advice
Surface by surface
Brickwork movement joints
People sometimes point up a brick movement joint by mistake. Where one has been mortared, we cut it out and reseal it with sealant where it can be done safely.
Copings and trims
A failed coping joint lets water into the top of the wall. Resealing them is a small job that protects a lot.
External mastic in Tweedbank: local notes
Private landlords in Scotland must meet the Repairing Standard, which includes keeping a home wind and watertight, and sound outside sealant is part of that. Harled (roughcast) walls are common in Scotland, and where harling meets frames, pipes and other materials, the joint needs a flexible sealant that grips a rough surface.
For site and facilities teams at buildings such as Galashiels Academy, larger buildings have long runs of movement joint that eventually need resealing.
Tweedbank is about 2 miles south-east of Galashiels, in the Scottish Borders. For external mastic in and around Tweedbank, it’s easy to get a quote: please email us at info@mrmastic.co.uk. We cover the Scottish Borders from our Crawley base. Tweedbank is one of 89 towns and villages in the Scottish Borders where we work for external mastic. You can also see our page for Edinburgh, about 29 miles away.
We work across TD1 and TD6 for external mastic. If you need external mastic at a property on Cotgreen Road, Abbotsferry Road and Tweedbank Avenue or anywhere close by, our applicators can take on the job. Neighbouring places we cover for external mastic include Langlee (1 mile north-west), Darnick (1 mile east), Boleside (2 miles south-west), Gattonside (2 miles east) and Galashiels (2 miles north-west). Larger places within reach include Hawick (12 miles south), Kelso (13 miles east), Selkirk (5 miles south-west), Jedburgh (12 miles south-east), Wilton (12 miles south) and Innerleithen (12 miles west).
What’s near Tweedbank
Tweedbank has its own railway station: Tweedbank station. Well-known places in the area include Old Gala House (1.8 miles north-west) and Borders General Hospital (1.1 miles south-east). Open spaces near Tweedbank include Eildon Mid Hill.
Common problems we fix in Tweedbank
Using the wrong sealant is another common reason. A high-modulus or general-purpose sealant can be too rigid for a busy joint, so it pulls away from the edges.
Signs it’s time to call us include:
- Cracked joints where brick meets render or frames
- Hard, crazed mastic that has stopped moving
- Panel joints letting water in
- Moss and dirt in joints with no sealant left
If you let a flat or house near Tweedbank station, outside joints that have cracked can let damp into a rental, so check them between lets.
Questions to ask before you book
- Is the old sealant removed completely?
- How hidden problems are handled
- When the joint can take water or movement
- The length of the guarantee
Work for landlords, hotels and businesses
If you manage several properties in or around Tweedbank, jobs at different addresses can go on one quote. Just tell us the addresses and what each one needs.
In hotels, rooms out of use cost money, so the work can be planned room by room. We’ve worked in hotels as well as homes and businesses.