Argyll and Bute · Scotland
External & façade joints in Clachan, Argyll and Bute
Problem with your movement joints in Clachan? We remove the old material, prepare the joints and seal them properly, and the work is guaranteed for a year.
- Joints where the bead has come unstuck
- Rigid filler in a joint that should flex
- Plants rooting in failed movement joints
What we do, step by step
Every visit runs the same way: we check the joints, protect the area around them, carry out the job and tidy away. Most jobs take a few hours for a handful of joints, longer for a whole elevation. Somewhere like Clachan may be a longer drive, and the journey is planned ahead. Tell us about tracks, gates, a ferry crossing or anything unusual about getting there.
- We inspect the joints and agree which need resealing and how they’ll be reached.
- The old mastic and anything lodged in the joint is removed.
- 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.
- A flexible exterior sealant is applied and tooled in a colour to suit the wall.
How to prepare
- Mention any sign-in or site rules at work premises
- Clear items away from the joints we’re working on
- Mention any parking rules near the property
How to get a quote
There’s no standard price list, as no two jobs are quite the same. Instead, your job gets its own clear quote. To get started, send an email to info@mrmastic.co.uk.
Advice
External mastic in Clachan
Joints in render and cladding are easy to overlook until a damp patch appears. We look over the joints, agree the ones to renew and reseal with a flexible, weatherproof product in a matching colour. If you are dealing with movement joints filled with mortar instead of sealant and moss and dirt in joints with no sealant left, we can put it right, on render & cladding joints, brickwork movement joints and joints between brick and frames alike.
Stone walls need a stone-friendly sealant, as acetoxy products can attack some stone. Newer houses need their movement joints and roofline trims kept sound.
You get a one-year guarantee, the same in Clachan as everywhere else we work.
- Place
- Clachan (PA29)
- Region
- Argyll and Bute
- Cover
- A year, on every job
- Quotes
- Quoted before any work starts
- info@mrmastic.co.uk
- Updated
- 26 October 2026
Common questions in Clachan
Does the coastal weather in Clachan affect outside sealant?
Coastal homes put outside sealant through more weather than inland ones, so the choice of sealant and the preparation matter even more. Walls facing the sea are generally the first to need attention.
Do you cover Clachan for external mastic?
Yes, Clachan is within the area we cover. We work across all of Scotland. Just send an email to info@mrmastic.co.uk with a few details of the job, and we will give you a clear price.
Is it worth trying it myself?
You can, for simple jobs. Preparation is everything: all the old sealant out, and a clean, dry joint. We can always put it right if it fails.
Can a movement joint be filled with mortar?
No, not if it’s a movement joint. Pointing it stops it working and can lead to cracking. A flexible sealant is the right fill.
Does someone need to be in?
Access is agreed with you when the job is booked. For inside work, that normally means someone being in.
Can new sealant go over the old?
No, and we never do. It can look neat for a few weeks, but the new layer lifts away from the old one. The old sealant has to come out completely.
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.
Where do you work from?
Our base is in Crawley, West Sussex, and we cover South East England, London and all of Scotland.
Clachan buildings and the weather
Clachan is close to the coast, and homes near the sea take more wind-driven rain, with salt in the air closer to the shore. That is hard on movement joints and outside wall joints, especially on the side facing the sea. Clachan is in the west of Scotland, which is wetter than the east, so there’s plenty of rain for movement joints and outside wall joints to keep out.
In and around Clachan, as anywhere, good external mastic starts with a clean, dry, properly prepared joint. For jobs in and around Clachan, choosing the right material for each joint is as important as a tidy finish.
Clachan (Gaelic: An Clachan) is about 31 miles west of Saltcoats, in Argyll and Bute. Anywhere in PA29, we cover external mastic for homes and businesses. Clachan is one of 118 places in Argyll and Bute where we work. Our Glasgow page covers work nearby.
All of PA29 is covered for external mastic, from the main roads to the quietest streets. Other places close to Clachan include Whitehouse (5 miles north-east), Ardminish (9 miles south-west), An Tairbeart (10 miles north-east), Pirnmill (10 miles south-east) and Lochranza (11 miles east). If you are somewhere remote, the job takes a little more planning, so let us know when you get in touch.
Near you in Clachan
Nearby you will also find Loup House (1.1 miles north). The countryside around Clachan includes Loch Ciaran.
Aftercare tips
To keep the joints looking good and working properly:
- Tell anyone working on the walls about the movement joints
- Deal with leaking gutters that soak the joints below
- Never let anyone fill a movement joint with mortar
- Clear growth from the base of walls and joints
Keep pressure washers away from the sealant. High-pressure water can lift the edges and let water in behind.
Leaks behind façade panels and render often go unseen. By the time there’s a damp patch, the damage can be well established so early resealing is worth it.
What the job involves on each surface
Brickwork movement joints
Brick movement joints are often mistaken for a missing mortar line. If that’s happened, we rake it out and reseal it properly where it can be done safely.
Copings and trims
Joints in copings, parapets and trims are exposed to the worst of the weather. We reseal them with an exterior sealant suited to the material.
What happens if it’s left?
A properly done movement joint is an even line in a colour that suits the wall. A hurried job with smeared edges and no backing looks worse and fails sooner so it’s worth doing right. Exposed walls in smaller Scottish places take a lot of wind and rain, and once water gets behind a failed joint, damp in stone or harled walls is slow to dry out.
Rather than a set price list, we price the job in front of us: how many joints, what’s in them now and how we reach them. The price is agreed before we begin.
What you get with us
- Full insurance on every job
- Anti-fungal sanitary silicone in wet areas
- Experience in homes, commercial sites and hotels
- Over 20 years’ experience
Read what affects the cost and our reviews.
Landlord and commercial work in Clachan
We regularly work with letting and managing agents. Send the address, what’s needed and the access arrangements and we’ll quote.
Failed sealant is one of the commonest items on a check-out report. Several properties can go on one quote.
DIY versus a professional finish
A DIY attempt doesn’t rule out a professional job. We cut it out and start again, so tell us about it when you ask for a quote.
The biggest DIY mistake is sealing over old sealant. New silicone will not bond to old, so it peels away and traps moisture behind it. All the old material has to come out first.
Quotes for external mastic in Clachan
Jobs vary more than people expect. What affects the quote:
- The old material and how stubborn it is
- Which sealant suits the joint
- How many rooms, windows or areas are involved
- The size of the job
A failed joint rarely gets cheaper to fix by waiting, because water and mould keep working on it. If you are not sure whether it needs doing, drop us a line at info@mrmastic.co.uk for an honest opinion and a quote.
What we need to know
You do not need to know the technical terms. Just tell us:
- Access, such as stairs, a lift or height
- How many joints, rooms or windows are involved
- If it’s domestic, commercial or a hotel
- Any previous sealing or DIY work
Want a quote for external mastic? Please drop us a line at info@mrmastic.co.uk with a few details. You will know what we plan to do, and what it will cost, before any work begins.