Dumfries and Galloway · Scotland
External & façade joints in Lochmaben, Dumfries and Galloway
Movement joints in Lochmaben need attention? We remove the old material, prepare the joints and seal them properly, and the work is guaranteed for a year.
- Movement joints filled with mortar instead of sealant
- Hard, crazed mastic that has stopped moving
- Failed seals between different materials
External mastic in Lochmaben
Joints between dissimilar materials, like brick against render or concrete against a steel frame, see movement from both sides. A flexible exterior sealant takes up that movement. We are often asked to deal with failed seals between different materials and brick movement joints where the sealant has split, across façade panels, concrete & block and brickwork movement joints.
Older stone buildings need a sealant that suits the stone, not an acetoxy product that can mark or attack it. On newer homes, the movement joints and roofline trims are what need watching.
Every job is covered by a 12-month guarantee, wherever you are in Dumfries and Galloway.
- Where
- Lochmaben (DG11)
- Region
- Dumfries and Galloway
- Cover
- A year, on every job
- Quote
- A clear quote up front
- info@mrmastic.co.uk
- Updated
- 26 October 2026
DIY sealant or a professional job?
The biggest DIY mistake is sealing over old sealant. New silicone won’t bond to old, so it lifts and traps water and mould underneath. Everything old must be removed first.
If you’ve already had a go yourself, that’s fine. We remove it and do the joint properly, so just mention it when you contact us.
Lochmaben questions
Will you come out to Lochmaben?
Yes, we do. We work across all of Scotland, and smaller places are part of that. Longer journeys are simply planned in advance.
Do you work for landlords with property near Lockerbie station?
Yes, landlords and agents are among the people we work for, and several properties can go on one quote. Just email us at info@mrmastic.co.uk with the address and what needs doing, and we will give you a clear price.
Will there be a smell?
There can be a smell while the sealant cures, but it fades. Opening a window helps.
How long before the joint can be used?
Cure times vary by product. We tell you how long to leave it before we go.
Where are you based?
Our base is in Crawley, and we work across South East England, London and Scotland.
How long does external mastic last?
It depends on the exposure, the movement and the product. Treat it as a maintenance item and look at it yearly.
Does someone need to be in?
It depends on the job. Inside work needs someone to give us access, and for outside work we’ll agree access with you when we book.
How do you reach high-level joints?
That depends on the building and the joints. Where joints can be reached safely, we’ll do them. Give us some details and we’ll confirm the access.
Why it’s worth doing now in Lochmaben
A failed movement joint lets water into the wall and can run behind render or cladding. Dealing with it early keeps the repair to the joint, rather than the wall around it. Around Lochmaben, water from a failed joint in an older stone home can soak into timber and plaster, which is a far bigger job than the sealant.
Some things make a job bigger or smaller: how much old sealant there is and how stubborn it is, any mould to treat, and whether the work is at height. We take all of that into account in your quote.
Why choose Mr Mastic in Lochmaben
- Tidy, careful work
- Anti-fungal silicone where joints get wet
- Over 20 years’ experience
- White, clear, grey or coloured to suit, where the product allows
See our cost guide and our reviews.
Places near Lochmaben
More services for Lochmaben
Walls and rooflines in Lochmaben
Under the Repairing Standard, private landlords in Scotland have to keep homes 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.
Rented homes near Lockerbie station change hands often, and failed wall and movement joints let damp in, so they’re worth checking between tenancies. Around Lochmaben, as everywhere, external mastic is only as good as the preparation behind it.
Lochmaben is about 8 miles north-east of Dumfries, in Dumfries and Galloway. We carry out external mastic for homes and businesses in Lochmaben. Lochmaben is one of 138 places in Dumfries and Galloway we cover. You can also see our page for Edinburgh, roughly 57 miles from Lochmaben.
Postcode districts we cover here for external mastic: DG11. We cover properties on High Street, Queen Street and Castle Street. Lochmaben sits on or near the A709 and B7020, which makes travel easy. Other places close to Lochmaben include Halleaths (1 mile south-east), Templand (2 miles north), Hightae (3 miles south), Lockerbie (3 miles east) and Nethermill (4 miles north-west). Within a short drive, we also cover Dumfries (8 miles south-west), Annan (12 miles south-east), Moffat (14 miles north), Heathhall (6 miles south-west), Newbridge Drive (8 miles west) and Troqueer (8 miles south-west).
Landmarks near Lochmaben
We work in homes and buildings around Bruce Arms Public House, among other places. The closest station to Lochmaben is Lockerbie station, about 3.5 miles east. A little further out are Old Lochmaben Castle (within half a mile south) and Lochmaben Hospital (0.5 miles west). Not far away are Mill Loch.
What affects the quote in Lochmaben
Some jobs are bigger than they look, and some smaller. What affects the quote:
- Any working-time requirements on site
- How many areas need sealing
- The type of sealant required
- The number and length of the joints
What it costs depends on the amount of work, how much old material has to come out and how easy the joints are to reach. You’ll have a clear quote before any work starts.
What we need to know
The more you tell us, the more accurate the quote. When you ask for a quote, tell us:
- A few photos by email, if you can
- How many joints, rooms or windows are involved
- Where the property is
- How we’d reach the joints
To get a quote, email us at info@mrmastic.co.uk with the location and a short description of the problem. We will give you a clear quote before any work starts.
The process
Once we are on site, we check the joints match what you told us. If anything is different, we explain it before carrying on. After that, the work takes a few hours to a few days, depending on the length of joint and the access. For a place like Lochmaben, longer drives are planned in advance. Tell us about tracks, gates, a ferry crossing or anything unusual about getting there.
- First, the joints are inspected and the access agreed.
- We cut out the old mastic and rake out anything in the joint.
- The faces are brushed clean and primed where the product requires it.
- We fit closed-cell backing rod to control the depth.
- The exterior sealant is applied, tooled and checked along its length.
Before we arrive
- Clear the area around the work
- Tell us if parking is tricky
- Mention any tricky access
Ask for a quote
For external mastic in Lochmaben, drop us a line at info@mrmastic.co.uk. Tell us what the problem is and where, and you will get a clear quote before any work starts.
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What we cannot put right
In fairness, some problems need a different trade:
- Failed render or damaged cladding panels
- Cutting new joints into brickwork, which is building work rather than sealant work
- Rising or penetrating damp from elsewhere in the wall
Not sure which it is? You can drop us a line at info@mrmastic.co.uk and we’ll tell you honestly.
Surfaces we seal
- Joints between brick and frames
- Concrete & block
- Façade panels
- Copings & trims
- Brickwork movement joints
- Render & cladding joints
Keeping the joints in good condition
Joint life depends on how it’s used and looked after. We suggest:
- Keep movement joints as flexible joints, not mortar
- Ask before painting over external sealant
- Get split or bare joints resealed while the damage is small
- Point out the joints to other trades
Avoid pressure-washing straight into the joints. High-pressure water can lift the edges over time.
Water getting behind cladding or render can go unnoticed for a long time. When it finally shows inside, the joint may have been open for years so early resealing is worth it.
Landlord and commercial work in Lochmaben
Landlords and agents in Lochmaben can book us as well as homeowners. Sealant work between tenants keeps a property looking cared for.
Mouldy or split sealant often shows up at the end of a tenancy. Several properties can go on one quote.