Glasgow · Scotland
Window Mastic in Cranhill
We cover Cranhill for mastic around window and door frames, sills and patio doors. Old material cut out, joints cleaned and sealed neatly and a 12-month guarantee.
- Leaking joints at the ends of sills
- Rushed sealant from a window installation
- Old mastic that has gone black or come away
Landlords, agents and businesses in Cranhill
Hotels need rooms back in use, so the work can be planned room by room around your bookings where we can. Hotel work is part of what we do, alongside homes and businesses.
Water getting past a failed joint can damage the building, which is a bigger problem in a rented property. Resealing at the right time is simple maintenance.
How we handle window mastic in Cranhill
Colour matters on a frame. White, brown, anthracite grey, black and clear sealants are all available, so the line suits the frame instead of standing out. If you’re dealing with mastic that has split away from the wall and a bead that doesn’t match the frame, we can put it right, on window sills, patio & French doors and composite doors alike.
Tenement flats in Scotland’s cities often have windows high above the street, where failing mastic is easy to miss. Access is the first thing to plan for a job in Cranhill.
You’re covered for a year from the day we finish. If anything isn’t right with it, send an email to info@mrmastic.co.uk.
- Location
- Cranhill (G33, G32, G69)
- Region
- Glasgow
- Guarantee
- 12 months on all our work
- Quote
- Quoted before any work starts
- info@mrmastic.co.uk
- Last updated
- 26 October 2026
Windows and doors in Cranhill
Under the Tenements (Scotland) Act 2004, shared parts of a tenement, such as the roof and outside walls, are looked after by the owners together, and many buildings use a factor to arrange it. Windows usually belong to the flat, but the title deeds have the final say. Sash and case windows are common in older Scottish homes, often pointed into the wall with traditional sand mastic.
Provand's Lordship, about 2.6 miles west, is one of the historic houses in the wider area around Cranhill, and older homes nearby need a sealant that suits their walls. If you let a flat or house near Carntyne station, cracked frame mastic tends to show up as a draught or damp complaint, so it’s worth checking between lets.
Cranhill is about 3 miles north of Cambuslang, in Glasgow. From the centre of Cranhill to the outskirts, window mastic is available for homes and businesses alike, from flats and houses to offices and hotels. Our area takes in 183 places across Glasgow, from the larger towns to small villages.
Here we cover the G33, G32 and G69 postcode area for window mastic. Window mastic is available to properties on Glen Road, Monach Road and Strone Road and the roads around them. Nearby, we also carry out window mastic in Lightburn (1 mile south), Ruchazie (1 mile north), Greenfield (1 mile south), Springboig (1 mile south-east) and Carntyne (1 mile west). Within a short drive, we also cover Glasgow (4 miles west), Hillhead (5 miles west), Dowanhill (5 miles west), Woodlands (4 miles west), Woodside (4 miles west) and North Kelvinside (4 miles west).
Landmarks near Cranhill
Typical jobs here are in homes near Eastbank Academy and Parkhead Library and the streets around them. The closest station to Cranhill is Carntyne station, roughly 0.7 miles south-west of the centre. Well-known places in the area include Lightburn Hospital (under half a mile south-east) and Tollcross Museum (1.1 miles south). The countryside around Cranhill includes Hogganfield Loch and Lenzie Moss.
What we’re called out for in Cranhill
Frames are never completely still. Sun on a frame makes it expand, and it contracts again overnight, while the masonry beside it stays put. If the sealant cannot stretch, it splits.
Any of these means the joints need attention:
- Rain getting in at the frame or under the sill
- Draughty joints inside around the window
- Rushed sealant from a window installation
- Cold air getting in at the frame edge
If you look after a building such as St Andrew's Secondary School, the mastic around its windows and doors needs looking after like any other building’s.
What your quote should include
- How the colour is chosen
- Is the old sealant removed completely?
- Who turns up on the day
- When the joint can take water or movement
What happens on the day
Once we’re on site, we check the joints match what you told us. If we find something unexpected, we talk it through with you first. After that, the work takes a few hours for a few frames, or a day or more for a whole house. Inside a flat in Cranhill, the job is planned with you; outside, shared parts may need the factor or other owners involved. Tell us which applies when you book.
- First, we go round the frames with you and agree the list.
- We remove the old mastic and clean the frame edge and wall.
- Deep gaps get closed-cell backing rod to set the depth.
- A flexible exterior sealant is applied in a colour to suit the frame.
- Every joint is tooled smooth and checked before we leave.
Getting ready for the visit
- Where the joints are inside, avoid wetting them before we arrive
- Mention any leaks or damp you’ve noticed
- Clear items away from the joints we’re working on
Ask for a quote
Getting a quote is simple: let us know the job and the location, and roughly how big it is. Photos by email help us understand the job.
Read more
Aftercare tips
To keep the joints looking good and working properly:
- Clear any debris from frame drain holes
- Look round the frames every year or so
- Keep timber frames painted
- Ventilate rooms so frames don’t stay wet inside
Have a look at the joints once a year, ideally after winter. Cracks and lifting edges are easy to spot early.
Look out for the warning signs: split or missing mastic, gaps, damp patches inside or black mould on the reveal. If you notice one, it’s time to get the joint looked at.
Towns and villages near Cranhill
What else we do in Cranhill
How the job changes by surface
Aluminium frames
Aluminium needs a sealant that bonds to coated metal. We use a neutral-cure product.
Window sills
The end joints of a sill tend to fail before the rest. A tight seal at each end keeps rain out of the wall.
Cranhill: your questions answered
Do you work for landlords with property near Carntyne station?
Yes, landlords and agents are among the people we work for. Just send an email to info@mrmastic.co.uk with the address and what needs doing, and we will give you a clear quote.
How do repairs to the shared parts of a tenement in Cranhill get organised?
It normally 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.
Is the new sealant paintable?
Most silicone cannot be painted. If you plan to paint, tell us first and we can use a paintable sealant where it suits the joint.
Can new sealant go over the old?
No. New silicone won’t bond to old silicone, and anything trapped underneath, including mould and water, stays there. It all has to come out first.
Where do you work from?
We work from Crawley. Our applicators cover Cranhill, along with the rest of our area.
Can you seal the gap between the frame and the plaster indoors?
Yes. Indoors, we seal between the frame and the plaster or reveal, using a paintable sealant if you want to decorate.
Do the sealants smell?
It depends on the product. Some products have a noticeable smell, others very little.
Do you have sealant for grey or black windows?
Yes. Anthracite grey, black, brown and white cover most frames, with clear as an option.
Honest limits
Sealant is not the answer to every problem, and we’d rather say so up front. Sealant won’t put right:
- Condensation trapped between the panes
- A door that needs adjusting, rehanging or new seals
- Rotten timber, which needs a joiner first
If in doubt, email us at info@mrmastic.co.uk and we’ll say what we think.
Where we work in Cranhill
- Timber windows & doors
- Composite doors
- Patio & French doors
- Aluminium frames
- uPVC windows
- Window sills
DIY versus a professional finish
What a professional job adds is preparation and the right product. Joints are cleaned back to sound surfaces and dried, and the sealant is chosen for how the joint moves and where it is, and the work is guaranteed for a year.
The biggest DIY mistake is sealing over old sealant. Silicone doesn’t stick to old silicone, so it peels away and traps moisture behind it. Everything old must be removed first.