Glasgow · Scotland
Sand mastic for sash & case windows in Robroyston, Glasgow
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for homes and businesses in Robroyston and across Glasgow. ARBOMaster approved applicators, fully insured, with a one-year guarantee.
- Gaps round a timber door in stone or brick
- Tired mastic found when preparing windows for paint
- Gaps between timber frames and stone or brick
Sand mastic in Robroyston, done properly
Across Robroyston, we renew sand mastic around sash and case windows. Every joint is cleaned out and filled by hand for a neat, traditional finish. Typical jobs include old cement repairs round a window that have failed and tired mastic found when preparing windows for paint, on brick reveals, tenement windows and timber door frames.
Robroyston is in one of Scotland’s four big cities, where many older buildings are sandstone or granite. Natural stone around older windows needs a sealant that won’t mark or attack it, so acetoxy silicones, which can attack some stone, are best avoided.
You are 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
- Robroyston (G33, G64, G21)
- Region
- Glasgow
- Cover
- One year on every job
- Price
- Quoted before any work starts
- info@mrmastic.co.uk
- Page updated
- 26 October 2026
How we quote for sand mastic
Your quote is based on your job. We look at:
- Whether the work is at height
- The type of sealant required
- Any working-time requirements on site
- Mould in or behind the old joints
No two jobs are quite the same, so each one gets its own quote. Size, access and the product the joint needs all make a difference.
What we need to know
When you call or email, these details help:
- What the problem is, such as mould, gaps, leaks or cracking
- Pictures of the joints, sent by email
- How many joints, rooms or windows are involved
- Access, such as stairs, a lift or height
For sand mastic in Robroyston, email us at info@mrmastic.co.uk. Tell us what the problem is and where, and we’ll agree the price before any work begins.
Should I try it myself first?
Overfilling a joint is a classic DIY mistake. A heavy bead looks messy and copes badly with movement, and the joint depth matters as much as the finish.
Some sealant jobs are within reach of a careful DIYer, such as a straightforward joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
Landlord and commercial work in Robroyston
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.
Businesses can book us for washrooms, kitchens, offices and more. On commercial sites, working times can be discussed when we quote.
When to call us in Robroyston
Some old mastic was never deep enough. A thin layer doesn’t hold well so we make sure the new mastic is the right thickness.
If you can see any of these, it’s time to have the joints looked at:
- Cracked mastic round a front door frame
- Gaps between timber frames and stone or brick
- Failed mastic on an exposed elevation
- Window mastic to renew ahead of painting
If you let a flat or house near Robroyston station, any sash windows need sound mastic to keep draughts and rain out.
What to look for in a quote
- Whether you can choose the colour
- Whether the sealant suits the joint
- How the surfaces are prepared before sealing
- Whether they’re fully insured
Also near Robroyston
Other services in Robroyston
What sealant work can’t fix
We will not take on work that won’t last, so here’s what sealant cannot put right:
- Crumbling stone or brickwork round the window
- Putty and glazing repairs
- Decisions on consent for listed homes
Not sure which it is? You can drop us a line at info@mrmastic.co.uk and we will tell you honestly before you book.
Surfaces we seal
- Sash and case windows
- Period & listed homes
- Timber door frames
- Brick reveals
- Tenement windows
- Stone surrounds
Questions from Robroyston
Do you cover Robroyston for sand mastic?
Yes, Robroyston is within the area we cover. Our work covers the whole of Scotland. Just email us at info@mrmastic.co.uk with a few details of the job.
How is work on the outside of a tenement in Robroyston generally arranged?
It usually 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, and we can quote for the factor or the owners directly.
Should I use sand mastic or silicone?
For period timber windows in stone or brick, sand mastic is often the better fit. Modern frames normally suit a flexible sealant, and we’ll explain why.
Will it make a mess?
No. We protect the surfaces around the joints, and we tidy up before we go.
Do I need permission for sand mastic on a listed building?
Your local planning authority is the one to ask. They decide whether consent is needed for work to your windows.
Are you an approved applicator?
Yes. We’re ARBOMaster approved, the scheme for applicators of Arbo sealants.
What do you need from me for a quote?
Where the job is, what the problem is and roughly how big it is. If you can, email a few photos.
Will there be a smell?
Sometimes, a little. Any smell clears as the sealant cures.
How the visit works
We bring everything the job needs with us, so there’s nothing for you to buy. Once we’ve agreed what’s being done, we protect the area and start. Most jobs take a few hours per window, depending on the condition of the joints. Many homes in Scotland’s cities are tenement flats, reached through a shared close and up a common stair. In Robroyston, it helps to know the floor, the door entry arrangements and the nearest parking.
- Each surround is checked first.
- We rake out the old mastic and clean the joint.
- Large voids are packed out.
- We point the joint with sand mastic by hand.
- The finish is dressed neatly.
Preparing for the visit
- Mention if the joints have been sealed before
- Let us know about stairs, lifts or work at height
- Keep children and pets away from the work area
How to get a quote
We quote each job on its own, so the first step is telling us about yours. Just send an email to info@mrmastic.co.uk with the details.
Read more
Aftercare tips
Looking after new joints is easy, and it makes a real difference:
- Take care around the mastic when scraping paint
- Get any rot dealt with first
- Leave the new mastic unpainted
- Don’t run silicone over sand mastic
Make sure water drains away from the window surround. Constant wetting wears the mastic faster.
Once mastic starts to crumble, rain gets in. That water can reach the timber frame and the wall, so renewing it early is worth it.
What sand mastic looks like in Robroyston
Much of Glasgow is built from red and blond sandstone, and porous sandstone needs a sealant that won’t mark it. Sash and case windows are common in older Scottish homes, often pointed into the wall with traditional sand mastic.
Historic houses such as Provand's Lordship, about 3.1 miles south-west, show how far back building around Robroyston goes.
Robroyston is about 2 miles south-east of Bishopbriggs, in Glasgow. If you need sand mastic in Robroyston, please email us at info@mrmastic.co.uk for a quick quote. We cover Glasgow from our Crawley base, Robroyston included. Robroyston is one of 183 towns and villages in Glasgow where we work.
Jobs for sand mastic in G33, G64 and G21 works the same way as everywhere else we cover. You will find streets such as Rae Avenue, Cumnock Road and Dochart Avenue. Neighbouring places we cover for sand mastic include Millerston (1 mile south-east), Hogganfield (1 mile south), Blackhill (2 miles south), Craigend (2 miles south-east) and Riddrie (2 miles south). Within a short drive, we also cover Glasgow (5 miles south-west), Hillhead (4 miles west), Dowanhill (5 miles west), Woodlands (4 miles south-west), Woodside (4 miles west) and North Kelvinside (4 miles west).
Landmarks near Robroyston
In Robroyston, that means homes and buildings near Springburn Park. For rail, the closest station is Robroyston station, about 0.6 miles south-east of the centre. Well-known places in the area include Bishop's Castle (3.1 miles south-west) and Stobhill Hospital (1.6 miles west). Not far away are Lenzie Moss and Hogganfield Loch.