Glasgow · Scotland
Sand mastic for sash & case windows in Blackhill, Glasgow
Sand mastic across Blackhill and nearby, with old sealant always removed completely.
- Mastic round period door frames that has failed
- Modern sealant on a period surround
- Old cement repairs round a window that have failed
How we handle sand mastic in Blackhill
If your home is listed or in a conservation area, check with your local planning authority if consent is needed before window work. Like-for-like sand mastic is often the preferred finish. We work on period & listed homes, timber door frames and brick reveals, and common reasons people get in touch are gaps between timber frames and stone or brick and mastic that needs renewing before redecorating.
Tenement flats in Scotland’s cities often have windows high above the street, so the mastic outside can go unchecked for years. Access is the first thing to plan for a job in Blackhill, and in a tenement the outside of the building may be a shared repair.
We guarantee the work for a year. If there’s a problem with our work within the year, let us know and we’ll sort it.
- Location
- Blackhill (G33, G21, G31)
- Wider area
- Glasgow
- Cover
- 12 months on all our work
- Quote
- A clear quote up front
- info@mrmastic.co.uk
- Updated
- 26 October 2026
Surface by surface
Brick reveals
Loose mastic comes out and deep gaps are packed before the new mastic goes in.
Period and listed homes
Many older homes were built with sand mastic round the windows. On listed buildings, check with your planning authority first.
When something else is needed
We won’t take on work that won’t last, so these are the limits:
- Decayed frames that need repair
- Damaged stone surrounds
- Putty and glazing repairs
Not sure which it is? You can email us at info@mrmastic.co.uk and we will tell you honestly before booking.
Surfaces we seal
- Stone surrounds
- Timber door frames
- Period & listed homes
- Tenement windows
- Brick reveals
- Sash and case windows
How the visit works
Most of a good job is in the preparation, and we don’t rush it. Joints are cleaned back and dried before anything new goes in. All told, the work takes a few hours for a single window, longer for several. Parking in city streets around Blackhill can be tight or controlled, so it helps to know about permits or nearby bays. For flats, mention the door entry system and any shared-stair arrangements.
- We look at the surrounds with you and agree the joints to renew.
- We remove the old, loose mastic.
- We pack any deep voids first.
- We apply the mastic by hand and shape it.
- The surface is finished to suit the stone or brick.
Getting ready for the visit
- Let us know if you’ve seen damp or leaks
- Move anything stored near the joints
- Keep children and pets away from the work area
Get a quote
Want a quote for sand mastic? Please email us at info@mrmastic.co.uk and tell us about the job. We’ll explain what we’d do and give you a clear price before work begins.
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How to look after the new joints
Good habits help new joints last longer. A few tips:
- Look over the window mastic once a year
- Do not paint over the new mastic
- Don’t run silicone over sand mastic
- Clear gutters so water does not pour onto the windows
Keep gutters and sills clear so water runs away from the surround. Water sitting against the mastic shortens its life.
It’s best to renew mastic before painting the windows. Paint over cracked mastic only covers it up.
Questions from Blackhill
How is work on the outside of a tenement in Blackhill usually arranged?
Shared parts of a tenement, such as the roof and outside walls, are usually 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 do not. Your title deeds will say who owns the windows.
I let a flat near Alexandra Parade station. Can you help?
Yes, rental work is part of what we do. Just send an email to info@mrmastic.co.uk and tell us about the property, and we’ll send you a clear quote.
Should I check with the council before work on a listed or conservation-area home?
It’s best to ask your local planning authority first. Like-for-like sand mastic is often the preferred finish, but they decide.
Do you guarantee sand mastic work?
There’s a 12-month guarantee on every job.
How long will you be here?
It depends on the size of the job, but as a guide it takes a few hours for a single window, longer for several. We will tell you when we quote.
What information do you need?
The location, the problem and the rough size of the job. Photos by email help too.
Do I need to be at home?
It depends on the job. Inside work needs someone to give us access, while outside work can sometimes be arranged differently.
How do I get a quote for sand mastic in Blackhill?
It depends on the job, so we quote each one individually. For a quick quote, drop us a line at info@mrmastic.co.uk and let us know what needs doing and where.
Do you need sand mastic in Blackhill?
Sand mastic slowly weathers. It dries out, cracks and loses its grip on the stone or timber.
Most people get in touch when they notice something like this:
- Gaps round a timber door in stone or brick
- Gaps between timber frames and stone or brick
- Modern sealant on a period surround
- Patchy fillers round a sash window
If you let a flat or house near Alexandra Parade station, cracked sand mastic around sash windows lets in the draughts tenants complain about.
What your quote should include
- Whether all the old sealant comes out first
- How hidden problems are handled
- Who does the work, and how experienced they are
- Which colour the sealant will be
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 matched to the joint and its conditions, and the work is guaranteed for a year.
A DIY attempt doesn’t rule out a professional job. We cut it out and start again.
Nearby places to Blackhill
More services for Blackhill
How we quote for sand mastic
The quote reflects the job in front of us. We look at:
- The type of sealant required
- Whether the work is at height
- The number and length of the joints
- Any working-time requirements on site
Some things make a job bigger or smaller: the old material and how easily it comes out, any mould to treat, and whether we need extra access for height. Your quote takes all of that into account.
What to tell us for a quote
Photos help, but a description is a good start. Please mention:
- Pictures of the joints, sent by email
- Whether it has been sealed before
- What the problem is, such as mould, gaps, leaks or cracking
- Any access issues, like height or stairs
For a quick quote, get us on the phone, or email us if that is easier. Describe what needs sealing and we will explain what’s involved.
Windows and doors in Blackhill
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 won’t mark it.
Provand's Lordship, about 1.7 miles south-west, is one of the historic houses in the wider area around Blackhill.
Blackhill is about 2 miles south of Bishopbriggs, in Glasgow. If you need sand mastic in Blackhill, it’s easy to get a quote: please drop us a line at info@mrmastic.co.uk. We’re based in Crawley and cover Glasgow, Blackhill included. Blackhill is one of 183 towns and villages in Glasgow we cover.
Our applicators cover all of the G33, G21 and G31 postcode area for sand mastic and the streets around it. We cover properties on Lee Avenue, Provan Road and Royston Road. Close by, we work in Riddrie (1 mile east), Carntyne (1 mile south), Hogganfield (1 mile north-east), Ruchazie (1 mile east) and Cranhill (1 mile south-east). Larger places within reach include Glasgow (3 miles south-west), Hillhead (4 miles west), Dowanhill (4 miles west), Woodlands (3 miles west), Woodside (3 miles west) and North Kelvinside (3 miles west).
What’s near Blackhill
In Blackhill, that means homes and buildings near Parkhead Library, Springburn Park and St Andrew's Secondary School, among other places. For rail, the closest station is Alexandra Parade station, about 0.9 miles south-west of the centre. Nearby you will also find Parkhead Hospital (1.4 miles south) and Glasgow Royal Infirmary Museum (1.6 miles south-west). For a walk, there’s Hogganfield Loch and Lenzie Moss.