North Lanarkshire · Scotland
External & façade joints in Allanton, North Lanarkshire
Problem with your movement joints in Allanton? We remove the old material, prepare the joints and seal them properly, with a one-year guarantee.
- Sealant pulling away from one side of the joint
- Hard, crazed mastic that has stopped moving
- Gaps where render, brick and frames meet
External mastic in Allanton, done properly
Failed sealant is cut out, the depth set with closed-cell backing rod, and the joint resealed with a low-modulus sealant made for outside. We pick a colour that sits well with the wall so the line blends in. If you have movement joints filled with mortar instead of sealant and brick movement joints where the sealant has split, we can help.
Older stone buildings need a sealant that suits the stone, not an acetoxy product that can mark or attack it. Newer houses need their movement joints and roofline trims kept sound.
Big or small, you get the same one-year guarantee.
- Where
- Allanton (ML7)
- Region
- North Lanarkshire
- Guarantee
- A year, on every job
- Price
- A clear price before we start
- info@mrmastic.co.uk
- Page updated
- 26 October 2026
How to look after the new joints
So the new joints stay in good condition:
- Clear growth from the base of walls and joints
- Never let anyone fill a movement joint with mortar
- Tell anyone working on the walls about the movement joints
- Keep water from gutters off the wall
Follow the cure time we give you before the joint is knocked or disturbed. Most exterior sealants skin fast but take longer to cure right through.
Leaks behind façade panels and render often go unseen. When it finally shows inside, the joint may have been open for years.
Towns and villages near Allanton
What else we do in Allanton
External mastic in Allanton: local notes
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 sound outside sealant is part of that.
If you let a flat or house near Hartwood station, failed wall and movement joints let damp in, so they’re worth checking between tenancies.
Allanton is about 4 miles north-east of Wishaw, in North Lanarkshire. Wherever you are in the ML7 postcode area, we can carry out external mastic at your property. Allanton is one of 89 places in North Lanarkshire we cover for external mastic. There’s also a page for Glasgow, about 17 miles away.
Postcode districts we cover here for external mastic: ML7. We cover properties on Mill Road, Wilson Road and Allanton Road and the roads around them. If you’re just outside Allanton, we cover Bonkle (1 mile south-west), Crindledyke (2 miles south-west), Newmains (2 miles south-west), Morningside (2 miles south-west) and Chapel (2 miles south-west). Further out, we also cover Motherwell (6 miles west), Cumbernauld (12 miles north-west), Coatbridge (8 miles north-west), Airdrie (7 miles north-west), Wishaw (4 miles south-west) and Bellshill (7 miles west).
What’s near Allanton
Allanton’s nearest station is Hartwood station, roughly 0.8 miles north of the centre. A little further out are Cleland Hospital (2.8 miles west) and Shotts Heritage Centre (2.2 miles north-east). Open spaces near Allanton include Allanton House lake.
What affects the cost of external mastic
We don’t publish a price list, because jobs vary so much. The quote depends on:
- How many areas need sealing
- The number and length of the joints
- How easy the joints are to reach
- When we can work, for business premises
What you pay reflects the work, not guesswork. That is why we ask about the job first and give you a clear quote before work begins.
What we need to know
To help us quote quickly, let us know:
- What the problem is, such as mould, gaps, leaks or cracking
- The rough size of the job
- The type of property
- Pictures of the joints, sent by email
The more we know about the job, the more useful the quote. Let us know the location, the problem and roughly how many joints.
How the job changes by surface
Joints between dissimilar materials
Joints where frames, sills or panels meet the wall are common leak points. The old joint is removed and a sealant that bonds to both sides goes in.
Render joints
Cracks along render joints let water in behind the coat. Resealing the joints early keeps water out and helps it last.
Signs you need external mastic in Allanton
A lot of failed joints come down to preparation: joint faces that were dusty or damp, unprimed where they needed it, or still carrying old sealant. The sealant never bonds properly.
Any of these means the joints need attention:
- Cracked joints where brick meets render or frames
- Hard, crazed mastic that has stopped moving
- Panel joints letting water in
- Movement joints with cracked, split or missing sealant
In the older streets around Bonkle Parish Church, an extension built onto an older house moves differently, and the joint between them takes the strain.
Comparing quotes
- What happens if they find a problem under the old sealant
- Whether they’re fully insured
- How much experience the applicator has
- Which colour the sealant will be
Why act early in Allanton
Pointing a movement joint with mortar might seem a neat fix, but it stops the joint moving. The movement then cracks the brickwork or render nearby. A flexible sealant over backing rod is what the joint needs. Out of town in Scotland, exposed walls take a lot of weather, and damp in stone or harled walls takes a long time to dry once water gets behind a joint.
Some things make a job bigger or smaller: the old material and how easily it comes out, any mould to treat, and whether the work is at height. Your quote takes all of that into account.
What you get with us
- Approved under the ARBOMaster scheme
- Rated 4.9 stars on Google
- Neat joints and a tidy finish
- One-year guarantee on every job
See our cost guide and customer reviews.
The process
There is not much for you to do on the day. Show us the job and we will take it from there. The work itself takes a few hours for a handful of joints, longer for a whole elevation. In smaller Scottish places, parking is generally less of an issue than access and distance. Let us know how to find you and how to reach the joints.
- First we look over the joints with you, agree which to renew and talk through access.
- Old sealant and any debris are cut and raked out.
- The joint faces are cleaned and primed where the sealant needs it.
- 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.
Before we arrive
- Keep children and pets away from the work area
- Mention any leaks or damp you’ve noticed
- Mention if the joints have been sealed before
Getting a quote
We quote each job on its own, so the first step is telling us about yours. Simply drop us a line at info@mrmastic.co.uk and describe the job and send photos if you have them.
Advice
FAQs for Allanton
Is Allanton in your area for external mastic?
Yes, Allanton is within the area we cover. We work across all of Scotland. You can send an email to info@mrmastic.co.uk and let us know what needs doing.
Will you come out to Allanton?
Yes, Allanton is covered. We work across all of Scotland, and smaller places are part of that. The journey is planned ahead, so it helps to know about access.
What do you put in the joint?
The product depends on the job: anti-fungal sanitary silicone in wet areas, and other sealants where joints move or face the weather. Brands we use include Arbo and Everbuild.
Can you seal over the old sealant?
No. Fresh sealant does not stick to old sealant, and it traps any mould or water underneath. We remove it all first.
Is the work guaranteed?
Yes: twelve months. If anything isn’t right with the work within the year, let us know and we’ll sort it.
How do you reach high-level joints?
That depends on the building and the joints. We work on joints that can be reached safely. Tell us about the building and we will confirm what access is needed.
What is a movement joint?
A movement joint is a planned break in the wall that absorbs expansion and shrinkage. It should be filled with flexible sealant, never mortar.
Will there be a smell?
Sometimes, a little. It fades as the sealant cures.
What sealant work can’t fix
We will not take on work that won’t last, so here’s what sealant can’t put right:
- Damp that is not coming from the joint
- Movement that is more than a sealant joint can take
- Walls that need new movement joints cut into them
If you are not sure, just send an email to info@mrmastic.co.uk and we will give you a straight answer before booking.
Where we work in Allanton
- Brickwork movement joints
- Façade panels
- Copings & trims
- Joints between brick and frames
- Render & cladding joints
- Concrete & block