Glasgow · Scotland
External Mastic in Possilpark
External mastic in Possilpark from a team with over 20 years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Joints where the bead has come unstuck
- Leaking joints around cladding and façade panels
- Rigid filler in a joint that should flex
External mastic for homes and businesses in Possilpark
Ground-floor and low-level joints are straightforward to reach. Where joints are higher up, tell us about the building when you get in touch and we’ll confirm what access is needed. Typical jobs include plants rooting in failed movement joints and joints where the bead has come unstuck, on render & cladding joints, façade panels and joints between brick and frames.
Stone-built tenements in Scotland’s cities share their roof, gutters and outside walls between every flat in the building. For a tenement in Possilpark, repairs to shared parts are generally agreed between the owners, often through a property factor.
Every job is covered by a one-year guarantee.
- Place
- Possilpark (G22, G20, G21)
- Wider area
- Glasgow
- Cover
- A year, on every job
- Quotes
- Quoted before any work starts
- info@mrmastic.co.uk
- Updated
- 26 October 2026
What external mastic looks like in Possilpark
Harled (roughcast) walls are common in Scotland, and joints where harling meets other materials need a sealant that can grip and flex. Historic houses like Tenement House (about 1.3 miles south-west) are a reminder that the area around Possilpark has older buildings as well as new. Where a home is older, older walls and rooflines need a sealant that moves with them and suits the material.
In the older streets around St Teresa's R C Church, the joints between older walls, newer extensions and the roofline need a sealant that can move. Managing a site like St Aloysius' College? Then its movement joints, gutters and trims need looking after like any other building’s.
Possilpark is about 2 miles north-east of Hillhead, in Glasgow. From the centre of Possilpark to the outskirts, we cover external mastic for every kind of property. We cover 183 towns and villages across Glasgow, large and small.
Jobs for external mastic in G22, G20 and G21 is quoted and booked the same way as anywhere else. Whether your property is on Walnut Road, Balmore Road and Drumfearn Road or a nearby road, our applicators can take on the job. With the A879 close by, Possilpark is easy for our applicators to reach for external mastic. We also cover Parkhouse (1 mile north), Cowlairs (1 mile south-east), Hamiltonhill (1 mile south-west), Ruchill (1 mile west) and Lambhill (1 mile north-west). Further out, we also cover Langside (4 miles south), Yoker (5 miles west), Mount Florida (4 miles south), Hillpark (5 miles south), Shawlands (4 miles south) and Temple (3 miles west).
Near you in Possilpark
Around Possilpark, our work takes us to homes and buildings near College of Piping, Andersonian Library and Springburn Park. There’s a railway station in Possilpark itself: Ashfield station. A little further out are Chinatown (1.2 miles south) and Ruchill Hospital (0.5 miles west). The countryside around Possilpark includes Hogganfield Loch and Lenzie Moss.
DIY sealant or a professional job?
Too much sealant is as bad as too little. A thick, smeared bead looks untidy and doesn’t move well, and getting the depth right matters as much as the look.
What a professional job adds is preparation and the right product. We take joints back to clean, dry surfaces, and the sealant is chosen for how the joint moves and where it is.
How we quote for external mastic
Some jobs are bigger than they look, and some smaller. The main factors:
- Which sealant suits the joint
- The old material and how stubborn it is
- The amount of work
- The number of rooms or windows
Every job is a little different, so we quote each one individually. The number of joints, how easy they are to reach and the sealant needed all make a difference.
What we need to know
You don’t need to know the technical terms. Just tell us:
- How we’d reach the joints
- Whether it has been sealed before
- How many joints, rooms or windows are involved
- The type of property
We quote each job on its own, so the first step is telling us about yours. Simply email us at info@mrmastic.co.uk and describe the job.
Landlord and commercial work in Possilpark
If you manage several properties in or around Possilpark, several properties can be quoted together. Send us the addresses and the work at each, and pictures by email help.
From a single let to a portfolio, you get the same standard of work: old sealant fully removed, joints prepared properly and a one-year guarantee.
Also in Possilpark
How to look after the new joints
A little care helps the new joints last. We recommend:
- Deal with leaking gutters that soak the joints below
- Keep high-pressure jets off the joints
- Tell anyone working on the walls about the movement joints
- Walk round the building once a year and look at the joints
Avoid pressure-washing straight into the joints. High-pressure water can lift the edges and let water in behind.
If you can see gaps, plants or bare sections in a joint, have it checked. Early work is quicker and leaves a better finish.
Do you need external mastic in Possilpark?
Sometimes a movement joint was filled with mortar or a rigid filler, often by someone who didn’t know what it was for. With the joint locked solid, the movement turns into cracks elsewhere in the wall.
Any of these means the joints need attention:
- Panel joints letting water in
- Movement joints with cracked, split or missing sealant
- Rigid filler in a joint that should flex
- Failed seals between different materials
Letting a property close to Ashfield station? Then outside joints that have cracked can let damp into a rental, so check them between lets.
What to look for in a quote
- What happens if the job turns out different
- How much experience the applicator has
- What guarantee comes with the work
- What the quote includes, VAT included or not
Why act early in Possilpark
Water gets in through a failed movement joint and can run behind render or cladding. Resealing early keeps the job to the joint itself, rather than the wall around it. In a Scottish city tenement, failed sealant affects more than one flat: water can reach the flat below, and gaps in shared walls or fire-stopping affect the whole stair.
Doing several joints on one visit usually makes better use of the time than several visits. You’ll get one clear quote for the whole job.
Why book with us
- Colour picked to suit the job
- Anti-fungal silicone where joints get wet
- Any old sealant cut out fully, not covered over
- Trusted Arbo and Everbuild sealants
Your questions about external mastic in Possilpark
Do you cover Possilpark for external mastic?
Yes. We work across all of Scotland, and Possilpark is part of that. Just email us at info@mrmastic.co.uk with a few details of the job.
How is work on the outside of a tenement in Possilpark normally arranged?
The owners of the flats usually agree repairs to shared parts like the roof and outside walls, and many buildings have a factor to arrange it. Where the title deeds are silent, the Tenements (Scotland) Act 2004 fills the gaps. Your title deeds will say who owns the windows.
Where is Mr Mastic based?
We’re a Crawley-based firm, with over 20 years’ experience. Our area covers South East England, London and Scotland.
What information do you need?
The location, the problem and the rough size of the job. If you can, email a few pictures.
Can you match the colour of my brickwork?
We choose a sealant colour to suit the brick, stone or render so the joint blends in. Exterior sealants come in a good range of colours.
Can tenants book the work?
Yes. Ask your landlord first, and we can send them the quote if that helps.
Can you seal joints between two different materials?
Yes. Joints between dissimilar materials are a big part of external work. We use a flexible sealant suited to both surfaces, primed where needed.
When is the sealant fully cured?
It depends on the product and the temperature. Before we leave, we’ll tell you the cure time.
What we do, step by step
When we get to you, we compare the joints with what we discussed. If we find something unexpected, we talk it through with you first. Most jobs then take anything from a few hours to several days, depending on the building. For a tenement in Possilpark, work inside your flat is between us and you, while shared parts may need the factor or neighbours to agree. Tell us which applies when you book.
- We start by checking each joint, agreeing the ones to redo and how we will reach them.
- Old sealant and any debris are cut and raked out.
- We clean both faces of the joint and prime them where the product calls for it.
- Backing rod goes in next, setting the depth and keeping the sealant off the back of the joint.
- The new sealant, chosen to suit the brick or render, is applied and tooled to a neat finish.
Getting ready for the visit
- Mention if the joints have been sealed before
- On commercial sites, let us know about site rules
- Tell us about any water getting in
How to get a quote
Getting a quote is simple: tell us what needs doing and where, and roughly how big it is. A few photos by email make the job easier to understand, and we’ll take it from there.