Glasgow · Scotland
External Mastic in Colston
Specialist external mastic for Colston: the right sealant, proper preparation and a neat finish. Ask us for a quick quote.
- Movement joints filled with mortar instead of sealant
- Failed sealant between panels on a façade
- Sealant that has lost its bond to the brick or render
Quotes for external mastic in Colston
There’s no set price list, because jobs vary so much. What we look at:
- The number of rooms or windows
- When we can work, for business premises
- Which sealant suits the joint
- Whether there’s mould to deal with
The cost reflects the work involved, not a rough estimate. That’s why we ask a few questions first and agree the price before starting.
Helping us quote
To help us quote quickly, let us know:
- Any previous sealing or DIY work
- What’s wrong with the joints now
- The type of property
- Roughly how big the job is
We quote each job on its own, so the first step is telling us about yours. Just send an email to info@mrmastic.co.uk with the details and send pictures if you have them.
External mastic in Colston
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. We work on render & cladding joints, joints between brick and frames and brickwork movement joints, and common reasons people get in touch are moss and dirt in joints with no sealant left and sealant that has lost its bond to the brick or render.
Stone-built tenements in Scotland’s cities share their roof, gutters and outside walls between every flat in the building. For a tenement in Colston, repairs to shared parts are usually agreed between the owners, often through a property factor.
We guarantee the work for a year. If something is not right with it in that time, tell us and we’ll put it right.
- Where
- Colston (G64, G22, G21)
- Wider area
- Glasgow
- Guarantee
- A year, on every job
- Quotes
- A clear price before we start
- info@mrmastic.co.uk
- Page updated
- 26 October 2026
What else we do in Colston
Honest limits
A few problems are outside what sealant work can do:
- Cutting new joints into brickwork, which is building work rather than sealant work
- Structural movement, which needs a surveyor or engineer
- Failed render or damaged cladding panels
If you’re not sure, just email us at info@mrmastic.co.uk and we’ll give you a straight answer before booking.
Joints and surfaces we work on
- Joints between brick and frames
- Copings & trims
- Render & cladding joints
- Concrete & block
- Brickwork movement joints
- Façade panels
Work for landlords, hotels and businesses
If you manage several properties in or around Colston, several properties can be quoted together. Send us the addresses and the work at each.
We work for landlords and letting agents as well as householders. Resealing between tenancies is a simple way to keep a property in good order before the next move-in.
Keeping the joints in good condition
Once the sealant has cured, a few habits help it last:
- Don’t let climbing plants root in the sealant
- Avoid pressure-washing directly into sealant joints
- Tell anyone working on the walls about the movement joints
- Have failed joints looked at early
Have a quick look at the joints each spring. Watch for splits, edges coming away or growth in the joint.
Leave a failed movement joint and water keeps getting into the wall. Over time it can mean damp inside, stained render or frost-damaged brick, all bigger jobs than a reseal.
DIY sealant or a professional job?
A careful DIYer can reseal a simple joint, such as a straightforward joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
If you’ve already had a go yourself, that is fine. We remove it and do the joint properly, so just mention it when you contact us.
Your questions about external mastic in Colston
Do you cover Colston for external mastic?
Yes. We work across all of Scotland, and Colston is part of that. You can email us at info@mrmastic.co.uk and tell us what needs doing, and we will give you a clear price.
How is work on the outside of a tenement in Colston normally arranged?
It generally 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 do not, and we can quote for the factor or the owners directly.
When is the sealant fully cured?
Different products cure at different speeds, so please follow the time we give you.
Are you insured?
Yes. We’re fully insured.
Can you work on commercial sites?
Yes. Commercial and hotel work is a large part of what we do, as well as homes. We can talk about working times when we quote.
Why do you put foam in the joint first?
Backing rod goes into deeper joints as a matter of course. It sets the sealant depth and prevents three-sided bonding.
What colours does the sealant come in?
The sealant colour is picked to suit the wall so the joint blends in. There’s a wide choice of exterior colours.
Is it worth trying it myself?
It depends on the job. Work at height, movement joints, fire-rated gaps and large areas are best left to a professional, while a short indoor joint may be within reach.
What the job involves on each surface
Joints between dissimilar materials
Where a frame or panel meets masonry, water often finds a way in. The old joint is removed and a sealant that bonds to both sides goes in.
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.
What we do, step by step
There is not much for you to do on the day. Show us the job and we will take it from there. The work itself takes a few hours to a few days, depending on the length of joint and the access from start to finish. In a city area like Colston, parking may be by permit or pay-and-display, so tell us what’s nearby. For flats, mention the door entry system and any shared-stair arrangements.
- We start by checking each joint, agreeing the ones to redo and how we’ll reach them.
- 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.
- We push in closed-cell backing rod so the sealant is the right depth and bonds to the sides only.
- The new sealant, chosen to suit the brick or render, is applied and tooled to a neat finish.
Preparing for the visit
- Tell us about access, such as stairs, a lift or high-level joints
- Keep children and pets away from the work area
- Tell us if parking is tricky
Get a quote
To get a quote, drop us a line at info@mrmastic.co.uk and tell us where the job is and what the problem looks like. You will have a clear quote before work begins.
Read more
Colston buildings and the weather
Under the Repairing Standard, private landlords in Scotland have to keep homes wind and watertight, and sound outside sealant is part of that. The Tenements (Scotland) Act 2004 sets out how owners share the upkeep of common parts like the roof and outside walls, and many buildings use a factor to arrange it. The title deeds set out which parts are common.
In the older streets around Colston Wellpark Church, older walls, gutters and the joints where extensions meet them need a flexible sealant. For site and facilities teams at buildings such as Bishopbriggs Academy, its movement joints, gutters and trims need looking after like any other building’s. For landlords with property near Bishopbriggs station, failed wall and movement joints let damp in, so they’re worth checking between tenancies.
Colston is about 1 mile south-west of Bishopbriggs, in Glasgow. For external mastic in and around Colston, please send an email to info@mrmastic.co.uk for a quick quote. We are based in Crawley and cover Glasgow. 183 places in Glasgow are on our list, from the larger towns to small villages.
Jobs for external mastic in G64, G22 and G21 is quoted and booked the same way as anywhere else. If you need external mastic at a property on Avon Road, Ashgill Road and Leehill Road or a nearby road, our applicators can take on the job. If you are just outside Colston, we cover Stobhill (1 mile south-east), Milton (1 mile west), Parkhouse (1 mile south-west), Auchinairn (1 mile east) and Huntershill Village (1 mile south-east). We also work in nearby towns such as Glasgow (3 miles south-west), Hillhead (3 miles south-west), Dowanhill (3 miles south-west), Woodlands (3 miles south-west), Partickhill (3 miles south-west) and Garnethill (3 miles south-west).
Around Colston
Typical jobs here are in homes near Springburn Park. The nearest railway station is Bishopbriggs station, about 0.5 miles north-east of the centre. Nearby you will also find Chinatown (2.3 miles south-west) and Bishop's Castle (2.5 miles south). The countryside around Colston includes Lenzie Moss and Hogganfield Loch.