Glasgow · Scotland
External & façade joints in Drumchapel, Glasgow
Our applicators work in Drumchapel on sealing brickwork movement joints, render, cladding and façade joints. Old sealant removed completely, joints prepared properly.
- Hard, crazed mastic that has stopped moving
- Joints where the bead has come unstuck
- Movement joints filled with mortar instead of sealant
External mastic in Drumchapel
Joints in render and cladding are easy to overlook until a damp patch appears. We inspect them, agree which need doing and reseal with a weatherproof, flexible sealant in a colour to suit. We work on copings & trims, brickwork movement joints and joints between brick and frames, and common reasons people get in touch are movement joints filled with mortar instead of sealant and gaps where render, brick and frames meet.
In a Scottish city tenement, the roof, gutters and outside walls are shared by all the flats. In Drumchapel, work on shared parts of a tenement is usually agreed between owners, often with a factor arranging it.
The work is guaranteed for twelve months. If something isn’t right with it in that time, tell us and we’ll put it right.
- Where
- Drumchapel (G15, G13, G61)
- Wider area
- Glasgow
- Guarantee
- One year on every job
- Quote
- Quoted before any work starts
- info@mrmastic.co.uk
- Page updated
- 26 October 2026
Drumchapel: your questions answered
How is work on the outside of a tenement in Drumchapel generally arranged?
It usually goes through the owners together, or through the factor if the building has one. The Tenements (Scotland) Act 2004 covers the common parts where the deeds don’t, and we can quote for the factor or the owners directly.
Do you cover Drumchapel for external mastic?
Yes, Drumchapel is within the area we cover. We work across all of Scotland. Just email us at info@mrmastic.co.uk with a few details of the job, and we’ll send you a clear quote.
Will it make a mess?
Not at all. We work neatly, protect the area around the joints and tidy up afterwards.
Can you seal joints between render and window frames?
Yes. Materials like render, brick, metal and uPVC all move differently, so the joint between them must be flexible. We choose one that suits both surfaces.
Do you have insurance?
Yes. Full insurance covers our work, and we can confirm the details when we quote.
Are you ARBOMaster approved?
Yes. We’re approved under the ARBOMaster scheme, which is run for the Arbo sealant brand.
Do you take out the old sealant first?
Yes, always, and completely. New silicone doesn’t stick to old silicone, so any old material comes out before anything new goes in.
Why do you put foam in the joint first?
That’s backing rod, a closed-cell foam. It keeps the sealant at the right depth and bonded to the sides only, which would stop it stretching.
What affects the cost of external mastic
Jobs vary more than people expect. What affects the quote:
- The old material and how stubborn it is
- The amount of work
- The type of sealant required
- How many areas need sealing
A failed joint rarely gets cheaper to fix by waiting, because water and mould keep working on it. If you’re not sure whether it needs doing, send an email to info@mrmastic.co.uk for an honest opinion and a quote.
What we need to know
To make quoting easier, let us know:
- Any previous sealing or DIY work
- How many joints, rooms or windows are involved
- If it’s domestic, commercial or a hotel
- Where the property is
Need a quote? Please drop us a line at info@mrmastic.co.uk with a few details. We’ll explain what we’d do and send you a clear quote before we start.
What the job involves on each surface
Cladding and façade panels
If the façade has a specified sealant, that’s what we use or an approved alternative. Send us any details you have about the façade.
Render joints
Water behind render can lead to blown patches. A sound joint keeps the render dry behind and helps it last.
Also near Drumchapel
What else we do in Drumchapel
Can I do it myself?
A careful DIYer can reseal a simple joint, like a short, easy-to-reach joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
Some jobs are best left to a professional: high-level joints, fire-rated gaps, external movement joints and big jobs call for the right materials, safe access and experience.
Aftercare tips
Looking after new joints is easy:
- Leave the joints unpainted unless we have said otherwise
- Point out the joints to other trades
- Get split or bare joints resealed while the damage is small
- Wash walls gently around the sealant
Only paint over the joint if we’ve confirmed the sealant can take paint. Paint can crack on a flexible joint.
Gaps, plants or missing sealant in a joint are worth getting looked at. Earlier resealing means a smaller job and a better result.
Leave it or put it right?
Low-modulus sealants stretch easily, so they put less strain on the joint edges. That protects surfaces like brick, render and concrete. Too stiff a sealant can pull at the edges and break them. In a tenement flat in Drumchapel, a failed seal is rarely just your problem: water can reach the flat below, and gaps in shared walls or fire-stopping affect the whole stair.
The cost reflects the work involved, not a rough estimate. That’s why we ask about the job first and agree the price before starting.
Why choose Mr Mastic in Drumchapel
- Neat joints and a tidy finish
- Anti-fungal silicone where joints get wet
- 180+ five-star Google reviews
- Homes, businesses and hotels
Read how sealant jobs are priced and our reviews.
External mastic in Drumchapel: local notes
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. The Tenements (Scotland) Act 2004 sets out how owners share the upkeep of common parts like the roof and outside walls, often through a property factor. The title deeds set out which parts are common.
For an older house near a landmark such as St David's Parish Church, the joints between older walls, newer extensions and the roofline need a sealant that can move. If you look after a building such as Knightswood Secondary School, its movement joints, gutters and trims need looking after like any other building’s. Rented homes near Drumchapel station change hands often, and failed wall and movement joints let damp in, so they’re worth checking between tenancies.
Drumchapel is about 2 miles south-west of Bearsden, in Glasgow. We carry out external mastic for homeowners, landlords and businesses in Drumchapel, as part of our work across Glasgow. Our area takes in 183 places across Glasgow.
Here we cover the G15, G13 and G61 postcode area for external mastic. Local streets include Mace Road, Fruin Road and Manor Road, all of which we cover. We also cover the places around Drumchapel: Blairdardie (1 mile south-east), Old Drumchapel (1 mile south-west), Linnvale (1 mile west), Westerton (1 mile east) and Drumry (1 mile west). Within a short drive, we also cover Glasgow (5 miles south-east), Hillhead (4 miles south-east), Dowanhill (3 miles south-east), Woodlands (4 miles south-east), Woodside (4 miles south-east) and North Kelvinside (4 miles south-east).
Around Drumchapel
Drumchapel has its own railway station: Drumchapel station. Nearby you’ll also find Braehead (2 miles south) and Drumchapel Hospital (within half a mile north-east). For a walk, there’s Kilmardinny and Castle Hill.
Work for landlords, hotels and businesses
If you manage several properties in or around Drumchapel, several properties can go on one quote. Send us the addresses and the work at each, and pictures by email help.
We regularly work with letting and managing agents. Send the address, what’s needed and the access arrangements and we’ll give you a quote.
The process
We bring everything the job needs with us. After a quick look at the joints together, we protect the area and start. Most jobs take a few hours for a handful of joints, longer for a whole elevation. Inside a flat in Drumchapel, the job is planned with you; outside, shared parts may need the factor or other owners involved. Tell us which applies when you book.
- We inspect the joints and agree which need resealing and how they’ll be reached.
- We cut out the failed sealant and rake out any dirt or growth.
- The joint faces are cleaned and primed where the sealant needs it.
- Backing rod goes in next, setting the depth and keeping the sealant off the back of the joint.
- We gun in a flexible exterior sealant in a colour that suits the wall and tool it neatly.
Before we arrive
- Mention any sign-in or site rules at work premises
- Keep pets and children clear of the area while we work
- Mention any parking rules near the property
How to get a quote
It all starts with a short chat. Describe the problem, the location and the size of the job, and we will explain how we’d tackle it. When it suits you, email us at info@mrmastic.co.uk.