Aberdeen · Scotland
External & façade joints in Northfield, Aberdeen
External mastic across Northfield and nearby, with every bit of old sealant taken out first and a one-year guarantee.
- Rain getting behind render or cladding at a joint
- Joints where the bead has come unstuck
- Brick movement joints where the sealant has split
External mastic for homes and businesses in Northfield
Joints between dissimilar materials, like brick against render or concrete against a steel frame, see movement from both sides. A flexible sealant bridges the two where mortar or filler would crack. Typical jobs include failed sealant between panels on a façade and failed seals between different materials, on copings & trims, façade panels and concrete & block.
On a four-storey tenement, gutter joints are a long way from the street, so a leaking joint can run down the stone for months before anyone notices. In Northfield, access needs planning, and work on shared parts may need the other owners’ agreement.
All of our work is guaranteed for twelve months, and the guarantee is the same wherever you are.
- Location
- Northfield (AB16, AB21)
- Region
- Aberdeen
- Guarantee
- One year on every job
- Quotes
- A clear quote up front
- info@mrmastic.co.uk
- Last updated
- 26 October 2026
When it isn’t the sealant
Before you book, it’s worth knowing the limits too:
- Structural movement, which needs a surveyor or engineer
- Rising or penetrating damp from elsewhere in the wall
- Walls that need new movement joints cut into them
If you are not sure, just drop us a line at info@mrmastic.co.uk and we’ll give you a straight answer before you book.
What we seal
- Façade panels
- Joints between brick and frames
- Render & cladding joints
- Brickwork movement joints
- Concrete & block
- Copings & trims
How it works
You don’t need to clear the whole room or building, only the area right around the joints. Everything nearby is protected, and the work takes anything from a few hours to several days, depending on the building for a typical job. For a tenement in Northfield, work inside your flat is between us and you, while shared parts may need the factor or neighbours to agree. Tell us which applies when you book.
- 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.
- Joint faces are cleaned back and primed if the sealant needs it.
- We fit closed-cell backing rod to control the depth.
- The exterior sealant is applied, tooled and checked along its length.
How to prepare
- Let us know about earlier repairs to the joints
- For business premises, tell us about site rules or sign-in
- Mention any leaks or damp you’ve noticed
How to get a quote
Quotes start with a quick conversation. Tell us what’s wrong, where it is and how much there is. Whenever you’re ready, drop us a line at info@mrmastic.co.uk.
Related advice
What external mastic looks like in Northfield
Aberdeen is known as the Granite City, and granite is hard and dense, so any sealant against it needs clean, sound edges to grip. Under the Repairing Standard, private landlords in Scotland have to keep homes wind and watertight, and sound outside sealant is part of that.
Letting a property close to Aberdeen station? Then failed wall and movement joints let damp in, so they’re worth checking between tenancies. Schools such as Northfield Academy are buildings too, and its movement joints, gutters and trims need looking after like any other building’s.
Northfield is about 2 miles north-west of Aberdeen, in Aberdeen. Our applicators cover external mastic for homes and businesses in Northfield and the surrounding area. Northfield is one of 63 places in Aberdeen we cover.
We work across AB16 and AB21 for external mastic and the streets around it. If you need external mastic at a property on Tay Road, Quarry Road and Deveron Road or a nearby road, our applicators can take on the job. Other places close to Northfield include Cummings Park (1 mile east), Mastrick (1 mile south), Bucksburn (1 mile north-west), Summerhill (1 mile south) and Cornhill (1 mile south-east). We also work in nearby towns such as Ferryhill (3 miles south-east), New Aberdeen (3 miles south-east), Dyce (3 miles north-west), Portlethen (7 miles south), Cults (3 miles south) and Braeside (3 miles south).
Near you in Northfield
Locally, jobs take us to homes and businesses close to Stewart Park and Bucksburn Academy, among other places. The nearest railway station is Aberdeen station, about 2.9 miles south-east of the centre. Well-known places in the area include Mar's Castle (2.7 miles east) and Gordon Highlanders Museum (2.1 miles south). Not far away are Rubislaw Quarry and Gallows Hill.
How the job changes by surface
Concrete and blockwork
Wide joints in concrete need the depth controlling carefully. Backing rod sized to the joint sets it.
Cladding and façade panels
Panel systems often rely on sealant between and around the panels. Each joint gets a sealant that suits the panel and its movement.
Why it’s worth doing now in Northfield
A properly done movement joint is an even line in a colour that suits the wall. A rushed bead with no backing looks untidy and does not last, so it pays to do it properly once. In a Scottish city tenement, failed sealant affects more than one flat: a leak can come through the ceiling below, and gaps in shared walls or fire-rated joints matter to every flat.
Instead of a standard rate, we look at what your job involves: the amount of work, the old material and the access. You’ll know the price before we begin.
Why Northfield customers choose us
- 180+ five-star Google reviews
- Old sealant always removed completely
- One-year guarantee on every job
- Tidy, careful work
Take a look at our cost guide and what customers say.
Aftercare tips
So the new joints stay in good condition:
- Walk round the building once a year and look at the joints
- Don’t let climbing plants root in the sealant
- Never let anyone fill a movement joint with mortar
- Get split or bare joints resealed while the damage is small
Look over the joints once a year, ideally after winter. Splits, gaps at the edges or plants in the joint are early warning signs.
Leaks behind façade panels and render often go unseen. By the time there’s a damp patch, the damage can be well established, so it’s worth resealing at the first signs.
What affects the quote in Northfield
For a quick quote, just ask. The main things that affect it are:
- How easy the joints are to reach
- Any working-time requirements on site
- The number of rooms or windows
- Whether there’s mould to deal with
What it costs depends on the size of the job, how much old material has to come out and access to the work. You’ll have a clear quote before any work starts, so you know where you stand.
Helping us quote
To make quoting easier, let us know:
- Whether it’s a home or a business
- Any previous sealing or DIY work
- The rough size of the job
- Where the property is
Asking for a quote is easy: tell us what needs doing and where and its rough size. A few pictures by email make the job easier to understand, and we will come back to you with a quote.
Northfield questions
How is work on the outside of a tenement in Northfield generally arranged?
The owners of the flats usually agree repairs to shared parts like the roof and outside walls, and many buildings have a factor to arrange it. The Tenements (Scotland) Act 2004 sets out how that works where the title deeds do not. Windows often belong to the individual flat, but it’s worth checking your deeds.
Can you help a landlord with a rental near Aberdeen station?
Yes, we work for landlords and letting agents. You can drop us a line at info@mrmastic.co.uk with the address and a few details, and we will give you a fixed price before any work starts.
Do you cover Northfield?
Yes, we do. Northfield is part of the area we cover.
Do you hold any approvals?
Yes. We hold ARBOMaster approved applicator status.
Can I do it myself?
For a simple, easy-to-reach joint, a careful DIYer can do a reasonable job. The usual mistakes are sealing over old sealant, sealing a damp joint and using too much.
How long before the joint can be used?
Cure times vary by product and the conditions. We tell you how long to leave it before we go.
Can you do several jobs on one visit?
Yes. Tell us about everything you’d like done and we will quote it together.
Is the work guaranteed?
Yes, always. Each job is guaranteed for twelve months.
Nearby places to Northfield
More services for Northfield
When to call us in Northfield
Some movement joints have been pointed up with mortar. With the joint locked solid, the movement turns into cracks elsewhere in the wall.
Look out for any of the following:
- Hard, crazed mastic that has stopped moving
- Movement joints filled with mortar instead of sealant
- Weeds or debris growing in open joints
- Cracked joints where brick meets render or frames
Friendville, about 2.5 miles south-east, is one of the historic houses in the wider area around Northfield, and older homes nearby need a sealant that suits their walls.
Comparing quotes
- Whether VAT is included
- How long to leave it before use
- Who turns up on the day
- Are they insured?