Glasgow · Scotland
Crookston External Mastic
Our applicators work in Crookston on sealing brickwork movement joints, render, cladding and façade joints. Old material cut out, joints cleaned and sealed neatly.
- Brick movement joints where the sealant has split
- Joints pointed up with cement by mistake
- Cracked joints where brick meets render or frames
External mastic in Crookston
External mastic is a job where short cuts show quickly. Overfilled joints, missing backing rod and sealant laid over old sealant all tend to fail early. We take the old material out and do it properly. We work on copings & trims, render & cladding joints and brickwork movement joints, and common reasons people get in touch are movement joints with cracked, split or missing sealant and cracked joints where brick meets render or frames.
Scotland’s cities also have plenty of modern blocks with rendered or clad walls and sealed movement joints. Around Crookston, as anywhere, those joints dry out and crack over time, letting water behind the face of the building.
Every job is covered by our one-year guarantee, wherever you are in Glasgow.
- Place
- Crookston (G52, PA1, G53)
- Wider area
- Glasgow
- Cover
- A year, on every job
- Quote
- A clear quote up front
- info@mrmastic.co.uk
- Last updated
- 26 October 2026
Should I try it myself first?
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.
The biggest DIY mistake is sealing over old sealant. New silicone won’t bond to old, so it peels away and traps moisture behind it. Everything old must be removed first.
When something else is needed
Sealant isn’t the answer to every problem, and we’ll tell you before work begins. Sealant will not put right:
- Structural movement, which needs a surveyor or engineer
- Rising or penetrating damp from elsewhere in the wall
- Loose or hollow render, which needs re-rendering
If you’re not sure, just send an email to info@mrmastic.co.uk and we will give you a straight answer before you book.
What we seal
- Joints between brick and frames
- Brickwork movement joints
- Render & cladding joints
- Copings & trims
- Façade panels
- Concrete & block
Nearby places to Crookston
Other services in Crookston
Questions from Crookston
Do you cover Crookston for external mastic?
Yes. We work across all of Scotland, and Crookston is part of that. Just email us at info@mrmastic.co.uk with a few details of the job, and we’ll give you a clear price.
Do you work for landlords with property near Crookston station?
Yes. We work for landlords and letting agents as well as homeowners. Just email us at info@mrmastic.co.uk with the address and what needs doing, and we will send you a clear quote.
Will it make a mess?
Tidy work is part of the job. We protect what’s around the joints, and we clear up when we are done.
Are you fully insured?
Yes, we are fully insured for every job we do.
Which products do you use?
The product depends on the job: anti-fungal sanitary silicone in wet areas, and other sealants where joints move or face the weather. Brands we use include Arbo and Everbuild.
Can you match the colour of my brickwork?
We choose a sealant colour to suit the brick, stone or render, so the joint sits quietly in the wall. Exterior sealants come in a good range of colours.
Can I do it myself?
For a simple, easy-to-reach joint, a careful DIYer can do a reasonable job. The usual mistakes are sealing over old sealant, sealing a damp joint and using too much.
What do you need from me for a quote?
Only a few details: where it is, what you’ve noticed and how we reach it. After that, simply send an email to info@mrmastic.co.uk.
Looking after it afterwards
So the new joints stay in good condition:
- Point out the joints to other trades
- Wash walls gently around the sealant
- Walk round the building once a year and look at the joints
- Keep water from gutters off the wall
If you have more work done on the wall, such as new render, cladding or an opening, show the contractor the movement joints. They should be kept open and resealed, not filled.
Act while the splits are small. At that stage it’s a simple cut out and reseal before water has had years to get in.
How it works
A visit follows a simple pattern: we check the joints, mask and protect the surrounding surfaces, carry out the job and clear up. Most jobs take anything from a few hours to several days, depending on the building. Many homes in Scotland’s cities are tenement flats, reached through a shared close and up a common stair. In Crookston, it helps to know the floor, the door entry arrangements and the nearest parking.
- Each joint is checked and the colour of the new sealant agreed.
- 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.
Getting ready for the visit
- Keep pets and children clear of the area while we work
- Mention any leaks or damp you’ve noticed
- Tell us about access, such as stairs, a lift or high-level joints
Get a quote
The more we know about the job, the more useful the quote. Tell us where the job is, what’s wrong and how much there is, and email photos if that’s easy.
Read more
What happens if it’s left?
Running new sealant over the old bead rarely lasts. New sealant does not bond well to old, weathered sealant, so we always take the old sealant out. In a Scottish city tenement, failed sealant affects more than one flat: a leak can come through the ceiling below, and gaps in shared walls or fire-rated joints matter to every flat.
Leaving a failed joint usually makes the job bigger, not smaller, because water and mould keep working on it. If you’re unsure, email us at info@mrmastic.co.uk and we will give you an honest view and a quote.
What you get with us
- Over 20 years’ experience
- Old sealant always removed completely
- Homes, businesses and hotels
- ARBOMaster approved applicator
Read what affects the cost and our reviews.
Landlords, agents and businesses in Crookston
Businesses can book us for washrooms, kitchens, offices and more. For commercial premises, we can talk through working times when we quote.
We regularly work with letting and managing agents. Tell us the address, the job and how access works.
What external mastic looks like in Crookston
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. Glasgow’s tenements are largely red and blond sandstone, and porous sandstone needs a sealant that will not mark it.
Schools such as Rosshall Academy are buildings too, and movement joints, cladding joints and gutters on larger buildings need the same care as a house’s. Pollok House, about 2.2 miles south-east, is one of the historic houses in the wider area around Crookston, and older homes nearby need a sealant that suits their walls.
Crookston is about 2 miles south of Renfrew, in Glasgow. For external mastic in and around Crookston, it’s easy to get a quote: please email us at info@mrmastic.co.uk. We’re based in Crawley and cover Glasgow. We cover 183 towns and villages across Glasgow, from the larger towns to small villages.
Every address in G52, PA1 and G53 is covered for external mastic. You will find streets such as Moulin Road, Glasgow Road and Newnham Road, all of which we cover. With the A736 close by, Crookston is simple for us to get to. We also cover the places around Crookston: Rosshall (1 mile south-east), Hillington (1 mile north-east), Penilee (1 mile north), Cardonald (1 mile north-east) and Hawkhead (1 mile south-west). We also work in nearby towns such as Glasgow (4 miles east), Hillhead (4 miles north-east), Dowanhill (4 miles north-east), Woodlands (4 miles north-east), Woodside (4 miles north-east) and North Kelvinside (4 miles north-east).
Local landmarks in Crookston
Locally, jobs take us to homes and businesses close to Barshaw Park. Crookston has its own railway station: Crookston station. Nearby you will also find Leverndale Hospital (0.6 miles south) and Silverburn Shopping Centre (1.8 miles south-east).
Common problems we fix in Crookston
A lot of failed joints come down to preparation: dusty or wet faces, no primer where one was needed, or old sealant left in. The sealant never bonds properly.
The problems people usually mention when they call include:
- Weeds or debris growing in open joints
- Rain getting behind render or cladding at a joint
- Joints with sealant missing in places
- Sealant that has lost its bond to the brick or render
For landlords with property near Crookston station, outside joints that have cracked can let damp into a rental, so check them between lets.
Questions to ask before you book
- How long to leave it before use
- What happens if the job turns out different
- Are they insured?
- Whether VAT is included