Aberdeenshire · Scotland
External & façade joints in Balfour, Aberdeenshire
Professional external mastic in and around Balfour, with old sealant always removed completely and a 12-month guarantee.
- Water getting into walls through failed joints
- Movement joints filled with mortar instead of sealant
- Moss and dirt in joints with no sealant left
How we handle external mastic in Balfour
Low-level joints can normally be done from the ground. Where joints are higher up, tell us about the building when you get in touch and we will confirm what’s needed to reach them safely. Common call-outs are for cracked joints where brick meets render or frames and failed sealant between panels on a façade, across render & cladding joints, concrete & block and façade panels.
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.
You get a 12-month guarantee, the same in Balfour as everywhere else we work.
- Location
- Balfour (AB31)
- Region
- Aberdeenshire
- Cover
- One year on every job
- Quote
- A clear price before work begins
- info@mrmastic.co.uk
- Last updated
- 26 October 2026
Your questions about external mastic in Balfour
What guarantee comes with external mastic in Balfour?
All our work, in Balfour and everywhere else, comes with a 12-month guarantee. We’re fully insured, and an ARBOMaster approved applicator.
Will you come out to Balfour?
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.
What do you need from me for a quote?
Just the basics: where it is, what you’ve noticed and how we reach it. Then drop us a line at info@mrmastic.co.uk.
Can you seal joints between two different materials?
Yes. Different materials move at different rates, so the joint between them must be flexible. We choose one that suits both surfaces.
Can I do it myself?
That depends on the joint. High-level, external movement and fire-rated joints are professional jobs.
Will you leave a mess?
Not at all. The area is protected while we work and cleaned up afterwards.
Do I need to be at home?
It depends on the job. For work indoors, someone needs to let us in, while outside work can sometimes be arranged differently.
What’s an expansion joint in brickwork?
A vertical gap in a long brick wall is usually a movement joint. It lets the bricks expand without cracking.
Places near Balfour
More services for Balfour
Leave it or put it right?
Done well, a resealed joint is a neat, straight line that suits the wall. A rushed bead with no backing looks untidy and does not last so it’s worth doing right. 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.
Some things make a job bigger or smaller: how much old sealant there is and how stubborn it is, any mould to treat, and whether we need extra access for height. We take all of that into account in your quote.
Why choose Mr Mastic in Balfour
- Quality sealants from Arbo and Everbuild
- Approved under the ARBOMaster scheme
- Colour agreed with you before work begins
- We leave the area clean and tidy
DIY sealant or a professional job?
What a professional job adds is preparation and the right product. We take joints back to clean, dry surfaces, and the sealant is matched to the joint and its conditions, then guaranteed for a year.
The biggest DIY mistake is sealing over old sealant. New silicone won’t bond to old, so it lifts and traps water and mould underneath. All the old material has to come out first.
What external mastic looks like in Balfour
Harled (roughcast) walls are common in Scotland, and where harling meets frames, pipes and other materials, the joint needs a flexible sealant that grips a rough surface. Private landlords in Scotland must meet the Repairing Standard, which includes keeping a home wind and watertight, and failed outside joints work against that.
Homes close to St Comgall's Church include some older properties, and the joints between older walls, newer extensions and the roofline need a sealant that can move.
Balfour is about 5 miles east of Banchory, in Aberdeenshire. We carry out external mastic for homes and businesses in Balfour. Our Aberdeenshire coverage runs to 161 places, and Balfour is one of them. You can also see our page for Aberdeen, about 11 miles away.
Here we cover the AB31 postcode area for external mastic. If you are just outside Balfour, we cover Woodlands (1 mile south-east), Kirkton of Durris (1 mile west), Drumoak (2 miles north), Crathes (2 miles west) and Crossroads (3 miles south-west). Larger places within reach include Westhill (7 miles north), Stonehaven (8 miles south-east), Banchory (5 miles west), Kemnay (13 miles north), Kintore (12 miles north) and Newtonhill (8 miles east).
Around Balfour
Other landmarks nearby include Crathes Castle (3.2 miles west) and Durris Castle (under half a mile north-west). The countryside around Balfour includes Meikle Carewe Hill.
The process
Good joint work is mostly preparation, so that’s where we spend the time. Every joint is cleaned and dried before new material goes in. All told, the work takes a few hours to a few days, depending on the length of joint and the access. For a place like Balfour, longer drives are planned in advance. Tell us about tracks, gates, a ferry crossing or anything unusual about getting there.
- Each joint is checked and the colour of the new sealant agreed.
- Failed sealant is removed back to clean, sound faces.
- Closed-cell backing rod is pushed in so the sealant bonds to two sides only.
- We prime the faces where required.
- A low-modulus exterior sealant is gunned in and tooled to a neat finish.
Getting ready for the visit
- Clear items away from the joints we are working on
- Keep children and pets away from the work area
- Tell us about access, such as stairs, a lift or high-level joints
Get a quote
Getting a quote is simple: let us know the job and the location, and roughly how big it is. Photos by email help us understand the job, and we will take it from there.
Related advice
Landlord and commercial work in Balfour
Mouldy or split sealant often shows up at the end of a tenancy, and it’s easy to sort out between tenants. Several properties can go on one quote.
A neglected joint can let water reach the structure, which matters even more when someone else lives there. Resealing at the right time is simple maintenance.
What the job involves on each surface
Concrete and blockwork
The face of concrete or block is often dusty, so preparation is key. We prime where the sealant needs it before the bead.
Render joints
Render is weaker at the surface than brick, so a low-modulus sealant is kinder to the joint edges. We prime where the product needs it.
Signs you need external mastic in Balfour
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.
Keep an eye out for these signs:
- Joints with sealant missing in places
- Old sealant gone brittle and cracked
- Cracked joints where brick meets render or frames
- Failed sealant between panels on a façade
Around Balfour, as everywhere, external mastic is only as good as the preparation behind it.
What to look for in a quote
- Whether all the old sealant comes out first
- Are they insured?
- How the joint is cleaned and prepared
- Whether you can choose the colour
What affects the cost of external mastic
The quote reflects the job in front of us. We look at:
- Working hours on commercial sites
- Whether the work is at height
- Any mould that needs treating
- The type of sealant required
Commercial jobs are quoted on the same basis as homes: the amount of work, the access and the products needed, plus any working-time requirements on site. Ask us for a quote and we will explain what it covers.
What we need to know
Before you ask for a quote, have a think about:
- Whether it’s a home or a business
- Where the property is
- How many joints, rooms or windows are involved
- How we’d reach the joints
There’s no standard price list, because every job is different. Instead, we send you a clear quote for your job. To get started, send an email to info@mrmastic.co.uk.