Highland · Scotland
External Mastic in Thurso
We cover Thurso for sealing brickwork movement joints, render, cladding and façade joints. Old material cut out, joints cleaned and sealed neatly and a 12-month guarantee.
- Movement joints with cracked, split or missing sealant
- Moss and dirt in joints with no sealant left
- Gaps where render, brick and frames meet
Common problems we fix in Thurso
Buildings move more than people expect. Clay bricks expand slightly over their life, concrete and block shrink, and everything moves with temperature and wet. All of that ends up in the joint sealant.
If you can see any of these, it’s time to have the joints looked at:
- Gaps where render, brick and frames meet
- Leaking joints around cladding and façade panels
- Weeds or debris growing in open joints
- Movement joints with cracked, split or missing sealant
Schools such as Thurso High School are buildings too, and movement joints, cladding joints and gutters on larger buildings need the same care as a house’s.
What to look for in a quote
- Is VAT in the price?
- Who turns up on the day
- Whether all the old sealant comes out first
- When the joint can take water or movement
External mastic in Thurso, done properly
Where two different materials meet, such as brick and render or blockwork and metal, they move at different rates. A flexible exterior sealant takes up that movement. If you are dealing with sealant that has lost its bond to the brick or render and movement joints with cracked, split or missing sealant, we can put it right, whatever the surface.
In a Scottish town like Thurso, wind-driven rain finds any gap on the outside of a building. Gaps in gutter joints, fascias and wall joints are where damp starts.
A 12-month guarantee comes as standard, so you are covered after we have gone.
- Where
- Thurso (KW14)
- Wider area
- Highland
- Cover
- One year on every job
- Quote
- Quoted before any work starts
- info@mrmastic.co.uk
- Last updated
- 26 October 2026
Can I do it myself?
If you’ve already had a go yourself, that’s fine. We cut it out and start again, so tell us about it when you ask for a quote.
If you do try it yourself, take your time over the preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it doesn’t work out, we can still put it right.
Work for landlords, hotels and businesses
Housing providers, facilities teams and property managers book us too. We can quote a run of properties together.
Landlords and agents in Thurso can book us as well as homeowners. Sealant work between tenants keeps a property looking cared for before the next move-in.
What else we do in Thurso
How the job changes by surface
Render joints
Render is weaker at the surface than brick, so a sealant that stretches easily protects the edges. Priming is done where the sealant calls for it.
Cladding and façade panels
If the façade has a specified sealant, that is what we use. Tell us what the building has when you get in touch.
Keeping the joints in good condition
Once the sealant has cured, a few habits help it last:
- Keep soil, plants and ivy away from the joints
- Avoid pressure-washing directly into sealant joints
- Get split or bare joints resealed while the damage is small
- Walk round the building once a year and look at the joints
Keep pressure washers away from the sealant. High-pressure water can lift the edges.
A joint that has stopped moving pushes the movement elsewhere, often as cracks near the joint. Catch it early and you reduce the risk.
Honest limits
Sealant isn’t the answer to every problem, and we will tell you before we start. Sealant will not put right:
- Loose or hollow render, which needs re-rendering
- Cracked brickwork or render that needs a builder or plasterer
- Damp that is not coming from the joint
If in doubt, drop us a line at info@mrmastic.co.uk and we will say what we think before you book.
Where we work in Thurso
- Façade panels
- Copings & trims
- Render & cladding joints
- Concrete & block
- Brickwork movement joints
- Joints between brick and frames
Your questions about external mastic in Thurso
Is Thurso in your area for external mastic?
Yes. We work across all of Scotland, and Thurso is part of that. You can send an email to info@mrmastic.co.uk and let us know what needs doing, and we will give you a clear price.
I let a flat near Thurso station. Can you help?
Yes, we work for landlords and letting agents. Just send an email to info@mrmastic.co.uk and tell us about the property, and we will give you a clear quote.
Is there a guarantee?
Yes: twelve months. If anything is not right with the work within the year, let us know and we will sort it.
What’s an expansion joint in brickwork?
Walls move with heat, cold and moisture, so long walls have planned gaps to take that movement. It’s closed with backing rod and a flexible sealant.
What should I tell you?
Just the basics: the address or postcode, what’s wrong and any access issues. After that, simply email us at info@mrmastic.co.uk.
How do you reach high-level joints?
It depends on the building. We work on joints that can be reached safely. Give us some details and we will confirm the access.
Do you take out the old sealant first?
Yes, every time. New sealant won’t bond properly to old, so the joint is cleaned back first.
Where is Mr Mastic based?
Mr Mastic is based in Crawley. Our applicators cover Thurso, along with the rest of our area.
What we do, step by step
Good joint work is mostly preparation, and we don’t rush it. Joints are cleaned back and dried before anything new goes in. All told, the work takes a few hours to a few days, depending on the length of joint and the access. In a Scottish town like Thurso, parking is generally straightforward, though older centres can be tighter. For flats, mention the shared stair or door entry system.
- We start by walking round the building and agreeing the joints and the access.
- 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.
- Backing rod sized to the joint goes in to set the depth.
- The exterior sealant is applied, tooled and checked along its length.
How to prepare
- Mention any sign-in or site rules at work premises
- Let us know about stairs, lifts or work at height
- Let us know if you’ve seen damp or leaks
How to get a quote
There’s no standard price list. Instead, we give you a clear price for your job. To get started, drop us a line at info@mrmastic.co.uk.
Advice
External mastic in Thurso: local notes
Thurso is close to the coast, and homes near the sea take more wind-driven rain, with salt in the air closer to the shore. Both are hard on movement joints and outside wall joints, which can dry out and crack sooner where a building faces the weather. Plenty of Scottish homes have harled walls, and joints where harling meets other materials need a sealant that can grip and flex.
If you let a flat or house near Thurso station, failed wall and movement joints let damp in, so they’re worth checking between tenancies.
Thurso is in Highland. Whether you’re in the middle of Thurso or further out, we cover external mastic for every kind of property. Thurso is one of 253 towns and villages in Highland we cover.
Every address in KW14 is within our area for external mastic, from the main roads to the quietest streets. If you need external mastic at a property on Sir John's Square, Gerry Square and High Street or a nearby road, our applicators can take on the job. Main roads around Thurso include the A9 and A836. Close by, we work in Scrabster (2 miles north-west), Glengolly (2 miles south-west), Janetstown (3 miles south-west), Murkle (3 miles east) and Forss (4 miles west). Thurso is one of the larger places we cover in Highland. Remote and island addresses need a little more planning, so tell us where you are when you ask for a quote.
Landmarks near Thurso
There’s a railway station in Thurso itself: Thurso station. A little further out are Scrabster Castle (0.7 miles north-west) and Thurso Heritage Museum (0.6 miles north-west).