Glasgow · Scotland
Sand mastic for sash & case windows in Mount Florida, Glasgow
Sand mastic for Mount Florida, by sealant specialists with 20+ years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Gaps round a timber door in stone or brick
- Mastic that needs renewing before redecorating
- A silicone bead on a sash window that spoils the look
When to call us in Mount Florida
Timber swells and shrinks with the weather. The movement cracks the mastic little by little.
These are the problems we are asked about most:
- Old cement repairs round a window that have failed
- Mastic dropping out of the joint
- Gaps round a timber door in stone or brick
- Open joints round the window box
Schools such as Holyrood Secondary School are buildings too, and its window and door frames need their mastic kept sound, just like a home’s.
What to look for in a quote
- What the quote includes, VAT included or not
- What insurance they hold
- How hidden problems are handled
- Is the old sealant removed completely?
Sand mastic in Mount Florida, done properly
Across Mount Florida, we renew sand mastic around sash and case windows. Each joint is raked out, prepared and pointed by hand, finished to suit the masonry. If you have crumbling sand mastic round a window and gaps where the frame meets the masonry, we can put it right.
Tenement flats in Scotland’s cities often have windows high above the street, where failing mastic is easy to miss. For a flat in Mount Florida, access is the first thing to plan, and in a tenement the outside of the building may be a shared repair.
A one-year guarantee comes as standard.
- Where
- Mount Florida (G44, G42, G43)
- Region
- Glasgow
- Cover
- One year on every job
- Quote
- A clear quote up front
- info@mrmastic.co.uk
- Updated
- 26 October 2026
What happens on the day
At the end, we look at the finished work together. The work normally takes a few hours for a single window, longer for several, depending on the size of the job. For a tenement in Mount Florida, work inside your flat is between us and you, while shared parts may need the factor or neighbours to agree. It helps to know which it is when you get in touch.
- We check the window surrounds and agree which joints need renewing.
- Old, loose mastic is raked out and the joint cleaned.
- Large voids are packed out first, so the mastic isn’t too thick.
- Sand mastic is mixed and applied by hand, then shaped to the joint.
- The mastic is finished to sit tidily against the stone or brick.
Getting ready for the visit
- Plan for the work area to be out of bounds to pets and children
- Tell us about access, such as stairs, a lift or high-level joints
- On commercial sites, let us know about site rules
How to get a quote
Quotes start with a quick conversation. Tell us what’s wrong, where it is and how much there is, and we’ll talk you through what we’d do. When it suits you, send an email to info@mrmastic.co.uk.
Related advice
Also in Mount Florida
Sand mastic in Mount Florida: local notes
Much of Glasgow is built from red and blond sandstone, and sandstone is porous, so any sealant against it has to be one that won’t stain or attack it. 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. Who owns the windows depends on the title deeds.
Historic houses such as Pollok House, about 2.4 miles west, show how far back building around Mount Florida goes. If you let a flat or house near Mount Florida station, any sash windows need sound mastic to keep draughts and rain out.
Mount Florida is about 2 miles south of Glasgow, in Glasgow. We provide sand mastic to householders, landlords and businesses in Mount Florida and nearby. 183 places in Glasgow are on our list, large and small.
Every address in G44, G42 and G43 is within our area for sand mastic, from the main roads to the quietest streets. We cover properties on Ledard Road, Delvin Road and Elmore Lane and the roads around them. If you’re just outside Mount Florida, we cover Cathcart (1 mile south-west), King's Park (1 mile east), Crosshill (1 mile north), Toryglen (1 mile north-east) and Simshill (1 mile south). Larger places within reach include Hillhead (4 miles north), Dowanhill (4 miles north-west), Woodlands (3 miles north), Woodside (4 miles north), North Kelvinside (4 miles north) and Partickhill (4 miles north-west).
Landmarks near Mount Florida
Around Mount Florida, our work takes us to homes and buildings near Cathkin Park, The Albert Public House and Couper Institute and Library. Mount Florida has its own railway station: Mount Florida station. Nearby you will also find Scottish Football Museum (less than half a mile north-east) and New Victoria Hospital (0.5 miles north-west). For a walk, there’s Cathkin Braes.
Should I try it myself first?
A DIY attempt does not rule out a professional job. We cut it out and start again, so tell us about it when you ask for a quote.
The difference is mostly in the preparation and the product. Joints are cleaned back to sound surfaces and dried, and the sealant is chosen for how the joint moves and where it is.
How to look after the new joints
To keep the joints looking good and working properly:
- Take care around the mastic when scraping paint
- Check the mastic when you check the paintwork
- Check with your local planning authority if your home is listed
- Ask a joiner to look at soft timber first
Do not run silicone over the new mastic. If you see a crack, ask us to take a look before trying a quick fix.
Small cracks are a sign the mastic is ageing. It’s easier to renew it before it drops out.
When something else is needed
We won’t take on work that won’t last, so here’s what sealant cannot put right:
- Crumbling stone or brickwork round the window
- Decayed frames that need repair
- Decisions on consent for listed homes
If in doubt, send an email to info@mrmastic.co.uk and we will say what we think.
Where we work in Mount Florida
- Stone surrounds
- Sash and case windows
- Brick reveals
- Tenement windows
- Timber door frames
- Period & listed homes
How we quote for sand mastic
Every job gets its own quote. This is what makes a difference:
- The old material and how stubborn it is
- The number and length of the joints
- Whether the work is at height
- How many rooms, windows or areas are involved
A failed joint rarely gets cheaper to fix by waiting. If you are not sure whether it needs doing, email us at info@mrmastic.co.uk and we will give you an honest view and a quote.
Asking for a quote
Photos help, but a description is a good start. Please mention:
- Whether it has been sealed before
- Pictures of the joints, sent by email
- If it’s domestic, commercial or a hotel
- What’s wrong with the joints now
There’s no standard price list. Instead, we give you a clear quote for your job. To arrange one, email us at info@mrmastic.co.uk.
Work for landlords, hotels and businesses
Mouldy or split sealant often shows up at the end of a tenancy, and it’s quick to put right between tenancies. We can quote for more than one property at once.
We regularly work with letting and managing agents. Send the address, what’s needed and the access arrangements and we will give you a quote.
Your questions about sand mastic in Mount Florida
How is work on the outside of a tenement in Mount Florida normally arranged?
It generally goes through the owners together, or through the factor if the building has one. The Tenements (Scotland) Act 2004 sets the rules for common parts if the deeds do not.
Is Mount Florida in your area for sand mastic?
Yes. We work across all of Scotland, and Mount Florida is part of that. You can drop us a line at info@mrmastic.co.uk and let us know what needs doing.
Where is Mr Mastic based?
We are based in Crawley, and we work across South East England, London and Scotland.
Does someone need to be in?
We need access to the joints, so we will agree that with you when we book. For inside work, that normally means someone being in.
Can I add another job to the visit?
Yes. Just list everything you need.
Do you work for letting agents?
Yes. As well as homeowners, we work for landlords, agents, businesses and hotels.
Can you work on commercial sites?
Yes. Commercial and hotel work is a large part of what we do, as well as homes. Working times can be discussed when we quote.
How long does the job take?
A typical job takes a few hours for a single window, longer for several, including the preparation. Your quote will say how long we expect yours to take.