Dundee · Scotland
External Mastic in Drumsturdy
External mastic for Drumsturdy, by sealant specialists with 20+ years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Hard, crazed mastic that has stopped moving
- Moss and dirt in joints with no sealant left
- Gaps where render, brick and frames meet
Drumsturdy: your questions answered
Does living near the coast affect external mastic in Drumsturdy?
Near the coast, wind-driven rain and, nearer the shore, salt air make outside sealant work harder. Choosing the right sealant for the frame and wall, laid at the right depth, helps it last.
Do you cover smaller places like Drumsturdy?
Yes, smaller places are covered as well as towns. Our work covers the whole of Scotland. Just mention lanes, gates or anything else about the route when you book.
Which products do you use?
We choose the sealant for the joint, not the other way round. Where it moves, gets wet or faces the weather makes a difference, and we’ll explain our choice.
What do you need from me for a quote?
Where the job is, what the problem is and roughly how big it is. If you can, email a few pictures.
What does external mastic cost?
There’s no set price, as it depends on the job: its size, the old material, access and the product needed. You will get a clear quote before any work starts.
Can you do several jobs on one visit?
Yes. Tell us about everything you’d like done and you’ll get one quote.
Is it OK to seal over old sealant?
No. The old sealant always comes out first, so the new joint bonds to clean surfaces.
How long does external mastic last?
It varies from wall to wall: joints on exposed walls or with a lot of movement age sooner. A yearly look will tell you when they need doing. Our work comes with a one-year guarantee.
How we handle external mastic in Drumsturdy
A movement joint is a deliberate break that lets a wall expand and contract. Its sealant has to flex with the building, season after season, and when it fails, the wall takes the strain and water finds a way in. Typical jobs include rigid filler in a joint that should flex and weathered mastic that no longer stretches, on render & cladding joints, copings & trims and joints between brick and frames.
Across smaller places in Scotland, stone and harled cottages, farm buildings and newer houses often stand exposed to wind and rain. Outside joints on exposed walls work hard.
Big or small, it’s backed by our 12-month guarantee in Drumsturdy and across Dundee.
- Location
- Drumsturdy (DD5)
- Wider area
- Dundee
- Cover
- 12 months on all our work
- Price
- Quoted before any work starts
- info@mrmastic.co.uk
- Last updated
- 26 October 2026
Signs you need external mastic in Drumsturdy
Poor preparation causes many early failures: joint faces that were dusty or damp, unprimed where they needed it, or still carrying old sealant. The new sealant then lets go long before it should.
Any of these means the joints need attention:
- Rain getting behind render or cladding at a joint
- Cracked joints where brick meets render or frames
- Plants rooting in failed movement joints
- Sealant that has lost its bond to the brick or render
Letting a property close to Monifieth station? Then split movement joints are easy to miss on a rental until damp shows inside.
Before you book anyone
- What preparation is included
- What guarantee comes with the work
- Which sealant they’ll use, and why
- What the cure time is
Keeping the joints in good condition
Joint life depends on how it’s used and looked after. We suggest:
- 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
- Ask before painting over external sealant
Have a quick look at the joints each spring. 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 early resealing is worth it.
How the job changes by surface
Cladding and façade panels
If the façade has a specified sealant, that’s what we use. Tell us what the building has when you get in touch.
Joints between dissimilar materials
Joints where frames, sills or panels meet the wall are common leak points. The old joint is removed and a sealant that bonds to both sides goes in.
How it works
All our tools and materials come with us in the van, so there’s nothing for you to buy. After a quick look at the joints together, the area is protected and the work begins. It normally takes anything from a few hours to several days, depending on the building. In smaller Scottish places, parking is normally less of an issue than access and distance. Tell us how to find the property and how to reach the work.
- We look at every joint and agree a colour to suit the wall.
- Failed sealant is removed back to clean, sound faces.
- 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.
Preparing for the visit
- Mention if the joints have been sealed before
- For indoor joints, keep the area dry beforehand if you can
- Let us know if you’ve seen damp or leaks
Get a quote
We don’t publish a price list, as no two jobs are quite the same. Instead, your job gets its own clear quote. To arrange one, send an email to info@mrmastic.co.uk.
Related advice
Should I try it myself first?
Some sealant jobs are within reach of a careful DIYer, such as a straightforward joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
Not every job suits DIY: high-level joints, fire-rated gaps, external movement joints and big jobs call for the right materials, safe access and experience.
Places near Drumsturdy
Also in Drumsturdy
What external mastic looks like in Drumsturdy
Drumsturdy is within about 3 miles of the coast, and homes near the sea take more wind-driven rain, with salt in the air closer to the shore. Both are hard on movement joints and outside wall joints, which can dry out and crack sooner where a building faces the weather. Plenty of Scottish homes have harled walls, and where harling meets frames, pipes and other materials, the joint needs a flexible sealant that grips a rough surface.
For site and facilities teams at buildings such as Monifieth High School, larger buildings have long runs of movement joint that eventually need resealing. Homes close to Newbigging Parish Church And War Memorial include some older properties, and old and new materials meet at the roofline and walls, which is where sealant earns its keep.
Drumsturdy is about 2 miles north-east of Broughty Ferry, in Dundee. From the centre of Drumsturdy to the outskirts, external mastic is available for homes and businesses alike. We cover 50 towns and villages across Dundee, large and small. You can also see our page for Dundee, roughly 6 miles from Drumsturdy.
Our applicators cover all of the DD5 postcode area for external mastic. We also cover Kingennie (1 mile north-west), Newbigging (1 mile north-east), Wellbank (1 mile north-west), Bucklerheads (2 miles west) and Monikie (2 miles north-east). Further out, we also cover Dundee (6 miles south-west), Stobswell (5 miles south-west), Blackness (7 miles south-west), Logie (7 miles south-west), St Marys (7 miles west) and Downfield (6 miles west).
Local landmarks in Drumsturdy
Drumsturdy’s nearest station is Monifieth station, about 2.1 miles south-east. Well-known places in the area include James Guthrie Orchar Art Gallery (3.2 miles south) and Ashludie Hospital (1.5 miles south-east). Not far away are Trottick Mill Ponds.
When something else is needed
Honest advice matters more to us than a booking, so here’s what new sealant will not do:
- Subsidence or other structural problems
- Damp from another source, such as a leaking gutter or a bridged damp-proof course
- Cracked brickwork or render that needs a builder or plasterer
If in doubt, send an email to info@mrmastic.co.uk and we’ll say what we think.
Where we work in Drumsturdy
- Brickwork movement joints
- Joints between brick and frames
- Render & cladding joints
- Copings & trims
- Concrete & block
- Façade panels
What affects the quote in Drumsturdy
The price is agreed before any work begins. It’s based on:
- The size of the job
- The number of rooms or windows
- Which sealant suits the joint
- How much old sealant there is and how hard it is to remove
Leaving a failed joint normally makes the job bigger, not smaller. If you are not sure whether it needs doing, email us at info@mrmastic.co.uk and we’ll give you an honest view and a quote.
Asking for a quote
You do not need to know the technical terms. Just tell us:
- Where the property is
- How we’d reach the joints
- If it’s domestic, commercial or a hotel
- The rough size of the job
For a quick quote, get us on the phone, or email us if that’s easier. Describe what needs sealing and we’ll talk you through the work and send you a clear quote.