Aberdeenshire · Scotland
External & façade joints in St Katherines, Aberdeenshire
External mastic for St Katherines, by sealant specialists with 20+ years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Rigid filler in a joint that should flex
- Sealant that has lost its bond to the brick or render
- Panel joints letting water in
About our external mastic in St Katherines
On houses, flats and commercial buildings across St Katherines, we reseal joints in brickwork, render, cladding and façade panels. Every joint gets the same careful preparation: clean joint faces and the right depth. If you are dealing with cracked joints where brick meets render or frames and hard, crazed mastic that has stopped moving, we can help.
Outside joints can only be sealed when they’re dry, so work in St Katherines depends on the weather. Tell us how to reach each wall, gutter and roofline.
Every job comes with a 12-month guarantee.
- Where
- St Katherines (AB51)
- Region
- Aberdeenshire
- Cover
- One year on every job
- Price
- A clear price before we start
- info@mrmastic.co.uk
- Last updated
- 26 October 2026
DIY versus a professional finish
Overfilling a joint is a classic DIY mistake. A heavy bead looks messy and copes badly with movement, and the joint depth matters as much as the finish.
If you’ve already had a go yourself, that is fine. We remove it and do the joint properly.
What affects the quote in St Katherines
Some jobs are bigger than they look, and some smaller. The main factors:
- How easy the joints are to reach
- The amount of work
- Whether old sealant or filler has to be cut out
- Any working-time requirements on site
The cost depends on how much there is to do, how hard the old material is to remove and how easy the joints are to reach. You’ll have a clear quote before any work starts, so you know where you stand.
What to tell us for a quote
When you call or email, it’s useful to know:
- Whether it has been sealed before
- Roughly how big the job is
- Any access issues, like height or stairs
- Pictures of the joints, sent by email
A good description makes for an accurate quote. Let us know the location, the problem and roughly how many joints, and add photos by email if you can.
Outside joints around St Katherines
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 sound outside sealant is part of that.
In and around St Katherines, as anywhere, good external mastic starts with a clean, dry, properly prepared joint. For jobs in and around St Katherines, choosing the right material for each joint is as important as a tidy finish.
St Katherines is about 8 miles north of Inverurie, in Aberdeenshire. We carry out external mastic for homes and businesses in St Katherines, as part of our work across Aberdeenshire. St Katherines is one of 161 towns and villages in Aberdeenshire we cover. For nearby work, see our Aberdeen page.
Here we cover the AB51 postcode area for external mastic. If you are just outside St Katherines, we cover Fyvie (2 miles north-west), Rothienorman (4 miles west), Meikle Wartle (4 miles south-west), Daviot (5 miles south-west) and Oldmeldrum (5 miles south). Larger places within reach include Inverurie (8 miles south), Ellon (11 miles east), Turriff (10 miles north), Garioch (8 miles south), Kemnay (12 miles south) and Kintore (11 miles south). Remote and island addresses need a little more planning, so please mention your location when you send an email to info@mrmastic.co.uk.
Landmarks near St Katherines
A little further out are Mounie Castle (3.7 miles south) and House Of Daviot Hospital (4.4 miles south-west).
Work for landlords, hotels and businesses
Failed sealant is one of the commonest items on a check-out report. Several properties can go on one quote.
If you manage several properties in or around St Katherines, jobs at different addresses can be quoted together. Send us the addresses and the work at each.
Honest limits
Some problems need a builder, plumber or other trade rather than us:
- Cracking across the wall rather than at a joint
- Adding movement joints to masonry that has none
- 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.
What we seal
- Joints between brick and frames
- Concrete & block
- Façade panels
- Brickwork movement joints
- Render & cladding joints
- Copings & trims
Also near St Katherines
Also in St Katherines
The process
Good joint work is mostly preparation, so that is 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. Outdoor work around St Katherines depends on the weather, as sealant needs a dry surface, so an outdoor job can move if the forecast changes. Indoor work goes ahead whatever the weather.
- 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.
- We clean both faces of the joint and prime them where the product calls for it.
- We push in closed-cell backing rod so the sealant is the right depth and bonds to the sides only.
- A flexible exterior sealant is applied and tooled in a colour to suit the wall.
Getting ready for the visit
- Mention any leaks or damp you’ve noticed
- Mention any parking rules near the property
- Try not to wet indoor joints just before the visit
Ask for a quote
Need a quote? Please email us at info@mrmastic.co.uk with a few details. You’ll know what we plan to do, and what it will cost, before any work begins.
Advice
What happens if it’s left?
Done well, a resealed joint is a neat, straight line that suits the wall. A hurried job with smeared edges and no backing looks worse and fails sooner. When the nearest tradesperson is a drive away, it’s tempting to leave a small leak, but water behind a failed seal does the most damage when nobody’s watching.
No two jobs are quite the same, so each one gets its own quote. The number of joints, how easy they are to reach and the sealant needed all make a difference.
What you get with us
- Fully insured
- Over 20 years’ experience
- Sanitary silicone with an anti-fungal additive in wet areas
- A sealant colour to suit the surroundings
Take a look at how sealant jobs are priced and what customers say.
Looking after it afterwards
Joint life depends on how it’s used and looked after. Here’s what we suggest:
- Wash walls gently around the sealant
- Ask before painting over external sealant
- Deal with leaking gutters that soak the joints below
- Keep soil, plants and ivy away from the joints
Avoid pressure-washing straight into the joints. A strong jet can damage the edges of the bead over time.
Once a joint can’t move, the wall finds another way, usually as cracking in the brickwork or render nearby. Catch it early and you reduce the risk.
FAQs for St Katherines
Do you cover smaller places like St Katherines?
Yes, smaller places are covered as well as towns. Our work covers the whole of Scotland. Let us know about access, parking and anything unusual about getting there when you book.
Can you do external mastic in St Katherines?
Yes. We work across all of Scotland, and St Katherines is part of that. Just email us at info@mrmastic.co.uk with a few details of the job.
How do I get a quote for external mastic in St Katherines?
We don’t publish prices, because the cost depends on the job: its size, the old material, access and the product needed. You’ll get a clear quote before work begins.
Will the new joint stand out?
The aim is a neat, even joint in a colour that suits the wall. We’ll talk through colour options before we start, matched as closely as the range allows.
Will there be a smell?
Possibly a little. It fades as the sealant cures.
Can you seal over the old sealant?
No. The old sealant always comes out first, so the new joint bonds to clean surfaces.
Do you do commercial work?
Yes. We can plan bigger jobs in stages.
Do you use backing rod?
We fit closed-cell backing rod wherever the joint depth needs controlling. It controls the depth and stops the sealant bonding to the back, so the joint can move.