Scottish Borders · Scotland
External & façade joints in Walkerburn, Scottish Borders
Sealing brickwork movement joints, render, cladding and façade joints in Walkerburn, with a 12-month guarantee on every job. Ask us for a quote.
- Moss and dirt in joints with no sealant left
- Cracked joints where brick meets render or frames
- Movement joints with cracked, split or missing sealant
How we handle external mastic in Walkerburn
A movement joint is a deliberate break that lets a wall expand and contract. 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. We work on façade panels, brickwork movement joints and copings & trims, and common reasons people get in touch are cracked joints where brick meets render or frames and weeds or debris growing in open joints.
Outside joints can only be sealed when they’re dry, so work in Walkerburn depends on the weather, and longer journeys are planned in advance. Let us know about access to every wall and roofline.
We stand behind the work with a 12-month guarantee, so you are not left on your own once the job is done.
- Location
- Walkerburn (EH43)
- Region
- Scottish Borders
- Cover
- A year, on every job
- Quote
- A clear quote up front
- info@mrmastic.co.uk
- Page updated
- 26 October 2026
What affects the quote in Walkerburn
Some jobs are bigger than they look, and some smaller. The main factors:
- The old material and how stubborn it is
- The number of rooms or windows
- The type of sealant required
- Working hours on commercial sites
Homes and businesses are quoted the same way: the amount of work, the access and the products needed, plus any working-time requirements on site. Ask us for a quote and we’ll go through it with you.
What to tell us for a quote
To make quoting easier, please include:
- The problem you’ve noticed
- How many joints, rooms or windows are involved
- Where the property is
- Any previous sealing or DIY work
If you are in Walkerburn and need external mastic, email us at info@mrmastic.co.uk. A short description of the job and where it is helps us quote, and you will get a clear quote before we start.
DIY sealant or a professional job?
The difference is mostly in the preparation and the product. Joints are cleaned back to sound surfaces and dried, and the sealant is matched to the joint and its conditions.
If you’ve already had a go yourself, that is fine. We remove it and do the joint properly.
Places near Walkerburn
Also in Walkerburn
Looking after it afterwards
Joint life depends on how it’s used and looked after. We suggest:
- Wash walls gently around the sealant
- Check external joints each spring
- Tell anyone working on the walls about the movement joints
- Keep water from gutters off the wall
Don’t paint over the new sealant unless we’ve said the product is paintable. Many exterior sealants are not designed to be painted, and paint can crack as the joint moves.
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, all bigger jobs than a reseal.
How it works
When we get to you, we compare the joints with what we discussed. If anything is different, we explain it before carrying on. After that, the work takes a few hours for a handful of joints, longer for a whole elevation. Outside jobs in Walkerburn need a dry day, because sealant will not bond to a wet joint, so an outdoor job can move if the forecast changes. Work indoors isn’t affected.
- 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.
- Primer is applied wherever the sealant needs it.
- We gun in low-modulus sealant and tool it neatly.
Before we arrive
- Keep children and pets away from the work area
- For indoor joints, keep the area dry beforehand if you can
- Mention any parking rules near the property
Get a quote
To get a quote, send an email to info@mrmastic.co.uk and tell us where the job is and what the problem looks like. You’ll have a clear quote before work begins.
Advice
When it isn’t the sealant
New sealant can’t fix everything, and we’d rather say so up front. It won’t solve:
- Cracks in the bricks or render themselves, away from the joints
- Loose or hollow render, which needs re-rendering
- Damp from another source, such as a leaking gutter or a bridged damp-proof course
If in doubt, drop us a line at info@mrmastic.co.uk and we’ll say what we think before booking.
Joints and surfaces we work on
- Façade panels
- Copings & trims
- Concrete & block
- Brickwork movement joints
- Render & cladding joints
- Joints between brick and frames
Landlords, agents and businesses in Walkerburn
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.
We also work for businesses, from offices to washrooms and kitchens. On commercial sites, working times can be discussed when we quote.
Signs you need external mastic in Walkerburn
UV, rain and frost all age exterior sealant. Over the years it hardens, cracks on the surface and loses its give, so the next time the wall moves, it splits or pulls away.
The problems people normally mention when they call include:
- Movement joints filled with mortar instead of sealant
- Sealant pulling away from one side of the joint
- Failed sealant between panels on a façade
- Cracked joints where brick meets render or frames
In and around Walkerburn, as anywhere, good external mastic starts with a clean, dry, properly prepared joint.
What to look for in a quote
- What the cure time is
- Who does the work, and how experienced they are
- What happens if the job turns out different
- Whether they’re fully insured
External mastic in Walkerburn: local notes
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. Under the Repairing Standard, private landlords in Scotland have to keep homes wind and watertight, and sound outside sealant is part of that.
In the older streets around Walkerburn Parish Church, old and new materials meet at the roofline and walls, which is where sealant earns its keep.
Walkerburn is about 8 miles west of Galashiels, in the Scottish Borders. Homes, rented property, offices and hotels in Walkerburn can book us for external mastic. The work is guaranteed for a year. Our the Scottish Borders coverage runs to 89 places, and Walkerburn is one of them. Edinburgh is on our list too, about 23 miles from Walkerburn.
Jobs for external mastic in EH43 is quoted and booked the same way as anywhere else. Whether your property is on Galashiels Road, Hall Street and Park Avenue or a nearby road, we can help. We also cover the places around Walkerburn: Innerleithen (2 miles west), Cardrona Village (4 miles west), Cardrona (4 miles west), Ashiestiel (4 miles east) and Peel (5 miles east). We also work in nearby towns such as Galashiels (8 miles east), Peebles (7 miles west), Selkirk (9 miles south-east), Melrose (11 miles east), Earlston (13 miles east) and Lauder (12 miles north-east).
Near you in Walkerburn
Nearby you’ll also find Horsburgh Castle (5 miles west) and Scottish Museum of Wool Textiles (under half a mile south-west). For a walk, there’s Lee Pen.
Your questions about external mastic in Walkerburn
Is there a guarantee on external mastic in Walkerburn?
Every job comes with our one-year guarantee, wherever it is. We are fully insured, and an ARBOMaster approved applicator.
Is Walkerburn within the area you cover?
Yes, we do. Our work covers the whole of Scotland, and smaller places are part of that. The journey is planned ahead, so it helps to know about access.
Is it OK to seal over old sealant?
No, it won’t last. It may look fine at first, but the new layer lifts away from the old one. The old sealant has to come out completely.
Are you ARBOMaster approved?
Yes. ARBOMaster is the approved applicator scheme for Arbo sealants, and we are part of it.
Should I point up the gap in my brickwork?
No. A mortar-filled joint can’t move, so the movement cracks the wall elsewhere. Use a flexible sealant with backing rod.
Will the old sealant be removed?
Yes. We cut out all the old sealant and clean the joint before resealing.
How long does external mastic take?
A typical job takes a few hours for a handful of joints, longer for a whole elevation. Your quote will say how long we expect yours to take.
Can you reach joints on upper floors?
It depends on the building. Send us photos and a rough idea of the height, and we will confirm what access is needed.