Aberdeenshire · Scotland
External Mastic in Lumsden
Sealing brickwork movement joints, render, cladding and façade joints in Lumsden, with a one-year guarantee on every job. Call for a quick quote.
- Sealant that has lost its bond to the brick or render
- Damp patches traced to an open external joint
- Failed seals between different materials
External mastic in Lumsden, done properly
Joints between dissimilar materials, like brick against render or concrete against a steel frame, see movement from both sides. A flexible exterior sealant takes up that movement where a rigid filler would soon crack. Typical jobs include joints pointed up with cement by mistake and gaps where render, brick and frames meet, on copings & trims, concrete & block and render & cladding joints.
Stone walls need a stone-friendly sealant, as acetoxy products can attack some stone. On newer homes, the movement joints and roofline trims are what need watching.
You are covered for a year from the day we finish. If anything is not right with it, email us at info@mrmastic.co.uk.
- Location
- Lumsden (AB54)
- Region
- Aberdeenshire
- Guarantee
- A year, on every job
- Quote
- A clear price before any work starts
- info@mrmastic.co.uk
- Updated
- 26 October 2026
Work for landlords, hotels and businesses
Mouldy or split sealant often shows up at the end of a tenancy. We can quote for more than one property at once.
For anyone letting property in or around Lumsden, jobs at different addresses can be quoted together. Send us the addresses and the work at each, and pictures by email help.
Common problems we fix in Lumsden
UV, rain and frost all age exterior sealant. Over the years it hardens, cracks on the surface and loses its give, so the joint eventually tears or comes away from one side.
These are the problems we’re asked about most:
- Damp patches traced to an open external joint
- Failed sealant between panels on a façade
- Joints where the bead has come unstuck
- Failed seals between different materials
In and around Lumsden, as anywhere, good external mastic starts with a clean, dry, properly prepared joint.
What to look for in a quote
- How the colour is chosen
- What product goes in the joint
- How long the guarantee is
- How much experience the applicator has
FAQs for Lumsden
Can you do external mastic in Lumsden?
Yes. Our work covers the whole of Scotland, and Lumsden is part of that. Just send an email to info@mrmastic.co.uk with a few details of the job.
What guarantee comes with external mastic in Lumsden?
All our work, in Lumsden and everywhere else, comes with a 12-month guarantee. We’re fully insured, and an ARBOMaster approved applicator.
Is it OK to fill a movement joint with cement?
No. A mortar-filled joint can’t move, so the movement cracks the wall elsewhere. It needs a flexible sealant over backing rod.
What information do you need?
Where the job is, what the problem is and roughly how big it is. Photos by email help too.
Is it worth trying it myself?
That depends on the joint. High-level, external movement and fire-rated joints are professional jobs, while a short indoor joint may be within reach.
Do you do commercial work?
Yes. We work in offices, washrooms, hotels and other commercial premises. Working times can be discussed when we quote.
Do you remove the old sealant?
Always. Sealing over old sealant is the main reason resealing fails early, so we never do it.
Can new sealant go over the old?
No, and we never do. It can look neat for a few weeks, but the new layer lifts away from the old one. The old sealant has to come out completely.
Nearby places to Lumsden
Other services in Lumsden
How it works
A visit follows a simple pattern: we check the joints, mask and protect the surrounding surfaces, do the work and clear up. It normally takes a few hours to a few days, depending on the length of joint and the access. Outdoor work around Lumsden 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.
- First we look over the joints with you, agree which to renew and talk through access.
- The old mastic and anything lodged in the joint is removed.
- The joint faces are cleaned and primed where the sealant needs it.
- We push in closed-cell backing rod so the sealant is the right depth and bonds to the sides only.
- We gun in a flexible exterior sealant in a colour that suits the wall and tool it neatly.
Preparing for the visit
- For business premises, tell us about site rules or sign-in
- Keep children and pets away from the work area
- Let us know if you’ve seen damp or leaks
Ask for a quote
We quote each job on its own. Just send an email to info@mrmastic.co.uk with the details.
Advice
Walls and rooflines in Lumsden
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. Harled (roughcast) walls are common in Scotland, and joints where harling meets other materials need a sealant that can grip and flex.
For jobs in and around Lumsden, choosing the right material for each joint is as important as a tidy finish.
Lumsden is about 18 miles west of Inverurie, in Aberdeenshire. Whether you are in the middle of Lumsden or further out, external mastic is available for homes and businesses alike. Across Aberdeenshire, we cover 161 places, Lumsden among them. Our Aberdeen page covers work nearby.
Jobs for external mastic in AB54 is quoted and booked the same way as anywhere else. Whether your property is on The Square and Main Street or anywhere close by, we can help. Neighbouring places we cover for external mastic include Cottown (3 miles north-east), Rhynie (4 miles north-east), Tullynessle (5 miles east), Towie (6 miles south) and Bridge of Alford (6 miles south-east). Further out, we also cover Huntly (12 miles north), Aboyne (15 miles south), Alford (7 miles south-east) and Insch (10 miles east). Remote and island addresses need a little more planning, so please mention your location when you drop us a line at info@mrmastic.co.uk.
Landmarks near Lumsden
Nearby you will also find Brux Castle (3.3 miles south). For a walk, there’s The Buck.
How we quote for external mastic
We quote each job individually. These are the things that affect it:
- Any mould that needs treating
- How many areas need sealing
- The number and length of the joints
- Any working-time requirements on site
No two jobs are quite the same, so each one gets its own quote. Size, access and the product the joint needs all make a difference.
Asking for a quote
There’s no need for technical detail. It helps if you can tell us:
- What the problem is, such as mould, gaps, leaks or cracking
- A few photos by email, if you can
- Access, such as stairs, a lift or height
- If it’s domestic, commercial or a hotel
The more we know about the job, the more useful the quote. Let us know the location, the problem and roughly how many joints.
Leave it or put it right?
Running new sealant over the old bead rarely lasts. The new layer cannot bond properly to old, weathered material, so the old joint is cut out fully first. Out of town in Scotland, exposed walls take a lot of weather, and damp in stone or harled walls takes a long time to dry once water gets behind a joint.
Leaving a failed joint generally makes the job bigger, not smaller, because water and mould keep working on it. If you are not sure whether it needs doing, send an email to info@mrmastic.co.uk and we will give you an honest view and a quote.
Why choose Mr Mastic in Lumsden
- Anti-fungal silicone where joints get wet
- 180+ five-star Google reviews
- Sealant colour chosen to suit
- Homes, businesses and hotels
Take a look at what affects the cost and what customers say.
What sealant work can’t fix
Some problems need a builder, plumber or other trade rather than us:
- Movement that’s more than a sealant joint can take
- Loose or hollow render, which needs re-rendering
- Walls that need new movement joints cut into them
If you are not sure, just email us at info@mrmastic.co.uk and we’ll give you a straight answer.
What we seal
- Concrete & block
- Brickwork movement joints
- Façade panels
- Render & cladding joints
- Joints between brick and frames
- Copings & trims
Different surfaces, different methods
Copings and trims
Joints in copings, parapets and trims are exposed to the worst of the weather. Each is resealed with a weatherproof, flexible sealant.
Brickwork movement joints
Clay brickwork grows slightly over its life and moves with the weather. That movement goes into the joint, so its sealant has to stay flexible.