Highland · Scotland
Balnabruich External Mastic
Sealing brickwork movement joints, render, cladding and façade joints for homes and businesses in Balnabruich and across Highland. ARBOMaster approved applicators, fully insured, with a 12-month guarantee.
- Brick movement joints where the sealant has split
- Hard, crazed mastic that has stopped moving
- Sealant pulling away from one side of the joint
About our external mastic in Balnabruich
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. The colour is chosen to suit the brick or render so the line blends in. If you’re dealing with brick movement joints where the sealant has split and gaps where render, brick and frames meet, we can help, on joints between brick and frames, render & cladding joints and façade panels alike.
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.
Big or small, you get the same 12-month guarantee.
- Location
- Balnabruich (KW6)
- Wider area
- Highland
- Guarantee
- 12 months on all our work
- Quotes
- A clear price before we start
- info@mrmastic.co.uk
- Page updated
- 26 October 2026
Outside joints around Balnabruich
Balnabruich is within about 1 mile of the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. That’s hard on movement joints and outside wall joints, especially on the side facing the sea. Private landlords in Scotland must meet the Repairing Standard, which includes keeping a home wind and watertight, and failed outside joints work against that.
In and around Balnabruich, as anywhere, good external mastic starts with a clean, dry, properly prepared joint. Whether the job is in Balnabruich itself or nearby, the right material for each joint matters as much as a neat finish.
Balnabruich is about 24 miles south of Thurso, in Highland. From the centre of Balnabruich to the outskirts, we cover external mastic for every kind of property. Our area takes in 253 places across Highland.
Our applicators cover all of KW6 for external mastic. External mastic is available to properties on Neil Gunn Road, Campbell Avenue and Achorn Road and the roads around them. We also cover Dunbeath (1 mile east), Berriedale (5 miles south-west), Lybster (7 miles north-east), Navidale (11 miles south-west) and East Helmsdale (12 miles south-west). If you are somewhere remote, a little more planning is needed.
Local landmarks in Balnabruich
A little further out are Dunbeath Castle (0.8 miles south) and Laidhay Croft Museum (1 mile north-east).
Towns and villages near Balnabruich
Other services in Balnabruich
How we quote for external mastic
Jobs vary more than people expect. The main factors:
- Whether there’s mould to deal with
- The type of sealant required
- How many rooms, windows or areas are involved
- Whether the work is at height
The cost depends on the size of the job, how much old material has to come out and access to the work. We give a clear quote before work begins, so you know where you stand.
Helping us quote
Photos by email are helpful but not essential. Please mention:
- Any previous sealing or DIY work
- The rough size of the job
- The type of property
- The problem you’ve noticed
Asking for a quote is easy: let us know the job and the location. Photos by email help us understand the job, and we’ll take it from there.
FAQs for Balnabruich
Is external mastic in a coastal place like Balnabruich any different?
Coastal homes put outside sealant through more weather than inland ones, so the choice of sealant and the preparation matter even more. It’s worth checking the walls that face the sea first.
Do you cover smaller places like Balnabruich?
Yes, we do. 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.
How long does external mastic take?
That depends on how much there is to do, but most jobs take a few hours to a few days, depending on the length of joint and the access. We’ll tell you when we quote.
Do you remove the old sealant?
Yes. Sealing over old sealant is the main reason resealing fails early, so we never do it.
Is the work guaranteed?
Yes, always. Each job is guaranteed for twelve months, wherever you are.
How much does external mastic cost in Balnabruich?
It depends on the job, so we quote each one individually. To get one, send an email to info@mrmastic.co.uk and let us know what needs doing and where.
Why is there a gap in my brick wall?
A vertical gap in a long brick wall is usually a movement joint. It gives the wall room to move and needs a flexible seal, not mortar.
Is it OK to seal over old sealant?
No, because it fails. The old sealant always comes out first, so the new joint bonds to clean surfaces.
What happens on the day
There’s no need to move everything out before we come, just the space around the work. Everything nearby is protected, and the job takes anything from a few hours to several days, depending on the building in most cases. Outside jobs in Balnabruich 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 look at every joint and agree a colour to suit the wall.
- We take out the old sealant until the faces are sound.
- Backing rod goes in so the sealant can stretch between the two faces.
- We prime the faces where required.
- We gun in low-modulus sealant and tool it neatly.
How to prepare
- Clear items away from the joints we’re working on
- Keep children and pets away from the work area
- Mention any parking rules near the property
How to get a quote
For external mastic in Balnabruich, drop us a line at info@mrmastic.co.uk. A short description of the job and where it is helps us quote, and we’ll agree the price before any work begins.
Read more
What sealant work can’t fix
In fairness, some problems need a different trade:
- Cracking across the wall rather than at a joint
- Damp that is not coming from the joint
- Adding movement joints to masonry that has none
Not sure which it is? You can send an email to info@mrmastic.co.uk and we’ll tell you honestly.
Where we work in Balnabruich
- Façade panels
- Render & cladding joints
- Brickwork movement joints
- Copings & trims
- Concrete & block
- Joints between brick and frames
DIY versus a professional finish
Sealing over old silicone is the commonest DIY error. New silicone will not bond to old, so it peels away and traps moisture behind it. Everything old must be removed first.
Not every job suits DIY: work at height, external movement joints, fire-rated sealant and large areas need the right product, the right access and the right method.
Landlords, agents and businesses in Balnabruich
Failed sealant is one of the commonest items on a check-out report, and it’s easy to sort out between tenants. We can quote for more than one property at once.
We also work for businesses, from offices to washrooms and kitchens. For commercial premises, we can talk through working times when we quote.
What happens if it’s left?
Water gets in through a failed movement joint. Resealing early keeps the job to the joint itself, instead of the wall and finishes around it. When the nearest tradesperson is a drive away, it’s tempting to leave a small leak, but water through a failed joint keeps working away until it’s fixed.
We don’t show prices on the website, because the cost depends so much on the job itself. Call for a quick quote.
Why us?
- Any old sealant cut out fully, not covered over
- A choice of colours where the product allows
- Fully insured
- Approved under the ARBOMaster scheme
Read what affects the cost and customer reviews.
Looking after it afterwards
Good habits help new joints last longer. Our tips:
- Keep movement joints as flexible joints, not mortar
- Point out the joints to other trades
- Check external joints each spring
- Wash walls gently around the sealant
Give the sealant the cure time we tell you before anything rubs against it. The surface skins over quickly, but full cure takes longer.
If you can see gaps, plants or bare sections in a joint, have it checked. Earlier resealing means a smaller job and a better result.