Glasgow · Scotland
Window & door mastic in Scotstoun, Glasgow
Window mastic across Scotstoun and nearby, with old sealant always removed completely.
- Untidy mastic left by window fitters
- Sealant in the wrong colour for the frame
- Draughts coming in around windows and doors
When to call us in Scotstoun
Every frame moves through the day. Sun on a frame makes it expand, and it contracts again overnight, while the masonry beside it stays put. A sealant that cannot keep up eventually tears.
Keep an eye out for these signs:
- Hard, cracked sealant around windows
- Draughts coming in around windows and doors
- Leaking joints at the ends of sills
- Gaps left after new windows were fitted
For an older house near a landmark such as Scotstoun East Church, frames set in older brick or stone need a sealant that suits the wall as well as the frame.
Comparing quotes
- How the surfaces are prepared before sealing
- When the joint can take water or movement
- The length of the guarantee
- What happens if the job turns out different
How we handle window mastic in Scotstoun
Every window and door frame has a gap around it, and mastic is what closes it. When it cracks, hardens or pulls away, draughts and rain get in. Our applicators cut it out and replace it with a flexible, weatherproof sealant. If you have gaps left after new windows were fitted and mastic that has split away from the wall, we can put it right, on window sills, timber windows & doors and aluminium frames alike.
Sash and case windows are a feature of older tenements in all four Scottish cities, though many have since been replaced. Whether you are in a tenement flat or a house in Scotstoun, the joint between frame and wall is what keeps the weather out.
All our work is covered by a one-year guarantee.
- Location
- Scotstoun (G14, G13, G51)
- Wider area
- Glasgow
- Cover
- One year on every job
- Quotes
- A clear quote up front
- info@mrmastic.co.uk
- Page updated
- 26 October 2026
Why deal with it now?
Failed mastic is not a reason to replace sound windows. Where the frames are sound, new mastic generally deals with draughts and leaks at the edges. Problems with the glass or gaskets are for a window company, and we will say so. For landlords in Scotstoun, damp and leaks can be a Repairing Standard issue, so it’s worth fixing failed sealant before a tenant reports it.
What you pay reflects the work, not guesswork. That is why we ask about the job first and give you a clear price before any work starts.
What you get with us
- 4.9 on Google from 180+ five-star reviews
- You choose the colour before work begins
- Trusted Arbo and Everbuild sealants
- An ARBOMaster approved applicator
Read what affects the cost or customer reviews.
Landlord and commercial work in Scotstoun
Whether it’s one flat or a portfolio, you get the same standard of work: old sealant fully removed, joints prepared properly and a 12-month guarantee.
Water getting past a failed joint can damage the building, which matters even more when someone else lives there. Resealing at the right time is simple maintenance.
Keeping the joints in good condition
Once the sealant has cured, a few habits help it last:
- Clean frames with a soft cloth and soapy water
- Avoid blasting the frames with a pressure washer
- Wipe condensation off the frames
- Repaint timber before it’s bare
Wipe the frames with soapy water when you clean the windows, and avoid solvent cleaners on the sealant.
Wet, windy weather is when failed mastic shows itself, but sealant goes on best when frames and walls are dry. Dealing with it when you first notice a crack avoids chasing leaks through the wet months.
What happens on the day
The work is kept neat and contained to the joints we’re treating. Expect the work to take most of a day for a typical house, less for a few frames. Many homes in Scotland’s cities are tenement flats, reached through a shared close and up a common stair. In Scotstoun, it helps to know the floor, the door entry arrangements and the nearest parking.
- Each frame is looked over and we agree which ones need resealing.
- The old mastic is cut out and scraped back to clean surfaces.
- Where the gap is deep, backing rod goes in first.
- A flexible exterior sealant is applied in a colour to suit the frame.
- Every joint is tooled smooth and checked before we leave.
Preparing for the visit
- On commercial sites, let us know about site rules
- Keep pets and children clear of the area while we work
- Move anything stored near the joints
Get a quote
For a quick quote, get us on the phone, or send an email if you’d rather. Tell us about the joints that need doing and we’ll explain what’s involved and give you a clear price.
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Scotstoun: your questions answered
Is Scotstoun in your area for window mastic?
Yes. Our work covers the whole of Scotland, and Scotstoun is part of that. You can email us at info@mrmastic.co.uk and tell us what needs doing, and we’ll give you a clear quote.
Who arranges sealant work on the shared parts of a tenement in Scotstoun?
The owners of the flats normally agree repairs to shared parts like the roof and outside walls, and many buildings have a factor to arrange it. The Tenements (Scotland) Act 2004 sets out how that works where the title deeds do not. Windows often belong to the individual flat, but it’s worth checking your deeds.
How many windows can you do in a day?
The work takes a morning for a couple of windows and a door. Access and how stubborn the old mastic is affect the time most.
I rent my home. Can I book you?
Of course. Ask your landlord first, and we can send them the quote if that helps.
Do you work for letting agents?
Yes, often. We can quote for several properties at once.
Will the old sealant be removed?
Yes, always, and completely. New silicone does not stick to old silicone, so the joint is cleaned back first.
Do you guarantee window mastic?
Yes. Our 12-month guarantee covers every job.
Can you seal over the old sealant?
No, and we never do. It can look neat for a few weeks, but the new layer lifts away from the old one. Removing the old sealant completely is the only lasting way.
Frames and glazing around Scotstoun
With historic houses such as Tenement House (about 3.2 miles east) nearby, there’s older building stock in the area around Scotstoun as well as newer homes. In older buildings, older frames set in brick or stone need a sealant that suits them, and sometimes that is traditional sand mastic. Many older homes in Scotland have sash and case windows, often pointed into the wall with traditional sand mastic.
For landlords with property near Scotstounhill station, cracked frame mastic tends to show up as a draught or damp complaint, so it’s worth checking between lets. If you look after a building such as Scotstoun Primary School, larger buildings have plenty of frames, and the mastic around each one ages.
Scotstoun is about 1 mile east of Renfrew, in Glasgow. For window mastic in and around Scotstoun, please drop us a line at info@mrmastic.co.uk for a quick quote. We cover Glasgow from our Crawley base, Scotstoun included. We cover 183 towns and villages across Glasgow, from the larger towns to small villages.
All of G14, G13 and G51 is covered for window mastic, from the main roads to the quietest streets. If you need window mastic at a property on Norse Road, Mitre Lane and Upland Road or anywhere close by, we can help. Nearby, we also carry out window mastic in Jordanhill (1 mile north-east), Scotstounhill (1 mile north-west), Whiteinch (1 mile south-east), Garscadden (1 mile north-west) and Broomhill (1 mile east). Further out, we also cover Glasgow (3 miles south-east), Woodlands (3 miles east), Woodside (3 miles east), North Kelvinside (3 miles east), Garnethill (3 miles east) and Anderston (3 miles east).
Near you in Scotstoun
Typical jobs here are in homes near Jordanhill College, St. Thomas Aquinas Secondary School and Victoria Park, among other places. The closest station to Scotstoun is Scotstounhill station, about 0.5 miles north of the centre. A little further out are Southern General Hospital (1.1 miles south) and Renfrew Museum (1.5 miles west). For a walk, there’s Kilmardinny and Castle Hill.
What the job involves on each surface
Patio & French doors
Heavy door frames can move more than windows. A flexible sealant copes with that.
Timber windows & doors
Where timber has rotted at the joint, it needs repairing first. We will point out any rot we find, as that’s a job for a joiner.
Can I do it myself?
Not every job suits DIY: work at height, external movement joints, fire-rated sealant and large areas need the right product, the right access and the right method.
The biggest DIY mistake is sealing over old sealant. Silicone does not stick to old silicone, so it peels away and traps moisture behind it. All the old material has to come out first.