Glasgow · Scotland
Sand mastic for sash & case windows in Possilpark, Glasgow
Traditional burnt sand mastic around sash and case windows and doors in stone and brick in Possilpark, with a 12-month guarantee on every job. Ask us for a quote.
- Wind and rain getting in round a sash window
- Old cement repairs round a window that have failed
- Silicone on a period window that looks wrong
Common problems we fix in Possilpark
Most of it is simply age. Even well-laid mastic needs renewing in time, depending on exposure and upkeep.
Keep an eye out for these signs:
- Failed mastic on an exposed elevation
- Silicone on a period window that looks wrong
- Old sand mastic that has cracked, crumbled or fallen out
- Tired mastic found when preparing windows for paint
In the older streets around St Teresa's R C Church, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
What to look for in a quote
- Is the old sealant removed completely?
- How the colour is chosen
- Who does the work, and how experienced they are
- What happens if they find a problem under the old sealant
Sand mastic in Possilpark, done properly
Silicone on a period window often looks wrong and isn’t always the right material. Sand mastic is the traditional choice and we can swap the silicone for it. We work on timber door frames, stone surrounds and tenement windows, and the jobs we see most are modern sealant on a period surround and weathered mastic on the most exposed windows.
Sash and case windows are a feature of older tenements in all four Scottish cities, and plenty still have them. In Possilpark, as anywhere, the mastic between frame and wall is what stops draughts and rain getting in.
Your job is guaranteed for a year, as with all our work.
- Location
- Possilpark (G22, G20, G21)
- Region
- Glasgow
- Guarantee
- 12 months on all our work
- Quotes
- A clear quote up front
- info@mrmastic.co.uk
- Updated
- 26 October 2026
DIY sealant or a professional job?
Sealing over old silicone is the commonest DIY error. New silicone will not bond to old, so it peels away and traps moisture behind it. All the old material has to come out first.
If you’ve already had a go yourself, that is fine. We remove it and do the joint properly, so tell us about it when you ask for a quote.
Landlord and commercial work in Possilpark
In hotels, rooms out of use cost money, so we plan the work room by room around your bookings where we can. Hotel work is part of what we do, alongside homes and businesses.
If you manage several properties in or around Possilpark, jobs at different addresses can go on one quote. Just tell us the addresses and what each one needs, and pictures by email help.
The process
The work is kept neat and contained to the area we’re working on, so you can get on with your day. Expect the work to take a few hours for a single window, longer for several, and we explain the cure time before we leave. 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 check each window surround and the condition of the joint.
- We rake out the old mastic and clean the joint.
- We fill deep gaps so the new mastic isn’t too thick.
- We point the joint with sand mastic by hand.
- The finish is dressed neatly.
Before we arrive
- Mention any tricky access
- Mention if the joints have been sealed before
- Plan for the work area to be out of bounds to pets and children
Ask for a quote
Every job is quoted individually, so start by telling us what you need. Just send an email to info@mrmastic.co.uk with the details, and pictures are welcome.
Advice
What happens if it’s left?
A silicone bead can be quicker, but it can look wrong on a period surround. Sand mastic suits the building and finishes neatly against the masonry. For landlords in Possilpark, damp and leaks can be a Repairing Standard issue, so failed sealant is best replaced before it becomes a complaint.
Leaving a failed joint generally makes the job bigger, not smaller, as water and mould keep getting in. If you’re unsure, send an email to info@mrmastic.co.uk for an honest opinion and a quote.
What you get with us
- Any old sealant cut out fully, not covered over
- 4.9 on Google from 180+ five-star reviews
- We leave the area clean and tidy
- Sanitary silicone with an anti-fungal additive in wet areas
See our cost guide or what customers say.
Possilpark: your questions answered
Do you work for landlords with property near Ashfield station?
Yes. We work for landlords and agents as well as homeowners. You can send an email to info@mrmastic.co.uk with the details for a clear quote.
How is work on the outside of a tenement in Possilpark generally arranged?
Shared parts of a tenement, such as the roof and outside walls, are normally repaired with the agreement of the owners, often through a property factor. The Tenements (Scotland) Act 2004 sets out how that works where the title deeds don’t. Your title deeds will say who owns the windows.
Do I need to be at home?
If the work is inside, we need someone to let us in. Once we’ve agreed the job, you don’t need to watch us work.
Are you ARBOMaster approved?
Yes. ARBOMaster is the approved applicator scheme for Arbo sealants, and we are part of it.
What do you need from me for a quote?
A short description and the location, with photos by email if possible. We’ll ask anything else we need to know.
Will the old sealant be removed?
Yes. We cut out all the old sealant and clean the joint before applying anything new.
Do you work in Possilpark?
Yes. We work in Possilpark. For a quote, send an email to info@mrmastic.co.uk.
Do you offer different sealant colours?
Yes. Sealants come in white, clear, grey and other colours for many products, and we will agree it with you first.
What else we do in Possilpark
Looking after it afterwards
So the new joints stay in good condition:
- Go gently near the mastic when preparing windows
- Renew mastic before redecorating the windows
- Get any rot dealt with first
- Clear gutters so water doesn’t pour onto the windows
Keep paint scrapers and sanders off the mastic when redecorating. It can be damaged by heavy scraping.
Gaps round a sash box let in draughts and rain. Left, the gap tends to get bigger as more mastic falls out.
Sand mastic in Possilpark: local notes
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 sandstone is porous, so any sealant against it has to be one that will not stain or attack it.
Rented homes near Ashfield station change hands often, and any sash windows need sound mastic to keep draughts and rain out. Schools such as St Aloysius' College are buildings too, and larger buildings have plenty of frames, and the mastic around each one ages.
Possilpark is about 2 miles north-east of Hillhead, in Glasgow. For sand mastic in and around Possilpark, please drop us a line at info@mrmastic.co.uk for a quick quote. We cover Glasgow from our Crawley base, Possilpark included. Our area takes in 183 places across Glasgow, from the larger towns to small villages.
Every address in G22, G20 and G21 is within our area for sand mastic. We cover properties on Walnut Road, Balmore Road and Drumfearn Road. Possilpark is on the A879, which makes it straightforward to reach. Neighbouring places we cover for sand mastic include 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).
What’s near Possilpark
Typical jobs here are in homes near College of Piping, Andersonian Library and Springburn Park and the streets around them. Possilpark has its own railway station: Ashfield station. Other landmarks nearby include Chinatown (1.2 miles south) and Ruchill Hospital (0.5 miles west). The countryside around Possilpark includes Hogganfield Loch and Lenzie Moss.
How the job changes by surface
Stone surrounds
We take care not to mark the stone while raking out the old mastic.
Sash and case windows
Most of our sand mastic work is on sash windows. We renew the mastic round each box.