North Lanarkshire · Scotland
External & façade joints in Hareshaw, North Lanarkshire
Movement joints in Hareshaw need attention? We cut out the old, prepare the joints and apply the right sealant, with a 12-month guarantee.
- Joints where the bead has come unstuck
- Brick movement joints where the sealant has split
- Weathered mastic that no longer stretches
Surface by surface
Cladding and façade panels
Panels heat up and cool down quickly, so the joint sealant has to cope with frequent movement. We choose the product to suit.
Brickwork movement joints
Brick moves with heat and moisture, and grows a little over time. That movement goes into the joint, so the sealant in it must stay soft and stretchy.
How we handle external mastic in Hareshaw
Low-level joints can generally be done from the ground. For joints higher up, give us some details of the building and we’ll confirm what access is needed. We work on copings & trims, joints between brick and frames and brickwork movement joints, and common reasons people get in touch are failed sealant between panels on a façade and brick movement joints where the sealant has split.
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.
The work is guaranteed for twelve months. If something is not right with it in that time, tell us and we will put it right.
- Location
- Hareshaw (ML1)
- Wider area
- North Lanarkshire
- Cover
- One year on every job
- Quotes
- Quoted before any work starts
- info@mrmastic.co.uk
- Updated
- 26 October 2026
When to call us in Hareshaw
Using the wrong sealant is another common reason. A stiff, general-purpose sealant can’t cope with a joint that moves a lot, so it pulls away from the edges.
The problems people normally mention when they call include:
- Failed seals between different materials
- Joints where the bead has come unstuck
- Moss and dirt in joints with no sealant left
- Brick movement joints where the sealant has split
Schools such as Brannock High School are buildings too, and larger buildings have long runs of movement joint that eventually need resealing.
What your quote should include
- How hidden problems are handled
- What product goes in the joint
- How the joint is cleaned and prepared
- What insurance they hold
Can I do it myself?
Overfilling a joint is a classic DIY mistake. A thick, smeared bead looks untidy and doesn’t move well, and the joint depth matters as much as the finish.
If you are set on DIY, put the effort into 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.
Walls and rooflines in Hareshaw
Plenty of Scottish homes have harled walls, 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 failed outside joints work against that.
Rented homes near Cleland station change hands often, and outside joints that have cracked can let damp into a rental, so check them between lets.
Hareshaw is about 4 miles north of Wishaw, in North Lanarkshire. Across the ML1 area, we can carry out external mastic at your property. 89 places in North Lanarkshire are on our list, large and small. Glasgow is on our list too, around 15 miles away.
All of ML1 is covered for external mastic, from the main roads to the quietest streets. Streets in the area include Wilsons Road and Hareshaw Road. Nearby, we also carry out external mastic in Biggar Road (1 mile south-west), Newarthill (1 mile south-west), Cleland (2 miles south), Chapelhall (2 miles north-west) and Gartness (3 miles north-west). We also work in nearby towns such as Motherwell (4 miles south-west), Cumbernauld (9 miles north-west), Coatbridge (5 miles west), Airdrie (4 miles north-west), Wishaw (4 miles south) and Bellshill (5 miles west).
Landmarks near Hareshaw
Hareshaw’s nearest station is Cleland station, roughly 1.6 miles south. Well-known places in the area include Murdostoun Castle (2.4 miles south-east) and Cleland Hospital (1.7 miles south). For a walk, there’s Baron's Haugh RSPB Reserve and Allanton House lake.
How we quote for external mastic
Some jobs are bigger than they look, and some smaller. The main factors:
- Mould in or behind the old joints
- Whether the work is at height
- The size of the job
- The product the joint needs
Combining jobs into one visit is usually more efficient than separate visits. We will give you a clear price for the lot.
What to tell us for a quote
When you contact us, these details help:
- Access, such as stairs, a lift or height
- Roughly how big the job is
- Pictures of the joints, sent by email
- The type of property
We quote each job on its own, so start by telling us what you need. Simply drop us a line at info@mrmastic.co.uk and describe the job and send pictures if you have them.
Your questions about external mastic in Hareshaw
I let a flat near Cleland station. Can you help?
Yes, rental work is part of what we do. Just drop us a line at info@mrmastic.co.uk and tell us about the property, and we’ll give you a clear price.
Do you cover smaller places like Hareshaw?
Yes, Hareshaw is covered. We work across all of Scotland, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.
Will there be a smell?
Some sealants have a smell while they cure, which fades as it sets. Ventilation helps.
Where do you work from?
Our base is in Crawley, and we work across South East England, London and Scotland.
Is it OK to seal over old sealant?
No. New silicone won’t bond to old silicone, and anything trapped underneath, including mould and water, stays there. We remove it all first.
What is backing rod for?
We fit closed-cell backing rod wherever the joint depth needs controlling. It sets the sealant depth and prevents three-sided bonding so the bead can stretch.
Do you work at height?
It depends on the height and the site. Ground-floor joints are simple; for higher ones, send details and we will confirm the access.
Is it messy?
Tidy work is part of the job. Nearby surfaces are protected, and the area is left clean when we finish.
What happens if it’s left?
An open joint keeps letting water into the wall with every downpour. Wet masonry is more easily damaged by frost near the open joint, so the damage spreads beyond the joint. Out of town in Scotland, exposed walls take a lot of weather, and once water gets behind a failed joint, damp in stone or harled walls is slow to dry out.
A few things move the cost up or down: how much old sealant there is and how stubborn it is, any mould to treat, and whether we need extra access for height. Your quote takes all of that into account.
Why Hareshaw customers choose us
- You choose the colour before work begins
- We leave the area clean and tidy
- More than 20 years in sealant work
- 4.9 on Google from 180+ five-star reviews
How the visit works
Every visit runs the same way: we look at the joints together, mask and protect the surrounding surfaces, carry out the job and tidy away. Most jobs take a few hours to a few days, depending on the length of joint and the access. Outside jobs in Hareshaw 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 inspect the joints and agree which need resealing and how they’ll be reached.
- We cut out the failed sealant and rake out any dirt or growth.
- Both sides are cleaned back to sound material and primed if needed.
- Backing rod goes in next, setting the depth and keeping the sealant off the back of the joint.
- We gun in a flexible exterior sealant in a colour that suits the wall and tool it neatly.
How to prepare
- Let us know if you’ve seen damp or leaks
- Let us know about parking restrictions
- For business premises, tell us about site rules or sign-in
Get a quote
For a quick quote, get us on the phone, or email us if that’s easier. Describe what needs sealing and we’ll talk you through the work before giving you a price.
Related advice
Nearby places to Hareshaw
What else we do in Hareshaw
When it is not the sealant
Some problems need a builder, plumber or other trade rather than us:
- Render that’s blown, hollow or coming away
- Movement that’s more than a sealant joint can take
- Cracking across the wall rather than at a joint
Not sure which it is? You can send an email to info@mrmastic.co.uk and we will tell you honestly.
Where we work in Hareshaw
- Copings & trims
- Joints between brick and frames
- Concrete & block
- Brickwork movement joints
- Render & cladding joints
- Façade panels