Glasgow · Scotland
Robroyston Window Mastic
Window mastic across Robroyston and nearby, with old sealant always removed completely and a 12-month guarantee.
- Hard, cracked sealant around windows
- A bead that does not match the frame
- Whistling draughts around closed windows
About our window mastic in Robroyston
If you can feel air around a shut window, the gap is often at the frame. Resealing that joint can make a room feel noticeably less draughty. If the draught is through the window seals instead, we will tell you. If you have draughty joints inside around the window and old mastic that has gone black or come away, we can help.
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 will not mark or attack it, which usually means a neutral-cure product or a traditional sand mastic rather than an acetoxy silicone.
Each job carries a 12-month guarantee, whatever its size.
- Location
- Robroyston (G33, G64, G21)
- Wider area
- Glasgow
- Guarantee
- A year, on every job
- Quote
- Quoted before any work starts
- info@mrmastic.co.uk
- Updated
- 26 October 2026
Window mastic in Robroyston: local notes
Private landlords in Scotland must meet the Repairing Standard, which includes keeping a home wind and watertight, and failed outside joints work against that. Historic houses like Provand's Lordship (about 3.1 miles south-west) are a reminder that the area around Robroyston has older buildings as well as new. Where a home is older, older timber frames in brick or stone need a different approach from a modern uPVC window.
Provand's Lordship, about 3.1 miles south-west, is one of the historic houses in the wider area around Robroyston.
Robroyston is about 2 miles south-east of Bishopbriggs, in Glasgow. From the centre of Robroyston to the outskirts, we cover window mastic for every kind of property, from flats and houses to offices and hotels. Across Glasgow, we cover 183 places, Robroyston among them.
Work in G33, G64 and G21 is quoted and booked the same way as anywhere else. If you need window mastic at a property on Rae Avenue, Cumnock Road and Dochart Avenue or a nearby road, our applicators can take on the job. We also cover Millerston (1 mile south-east), Hogganfield (1 mile south), Blackhill (2 miles south), Craigend (2 miles south-east) and Riddrie (2 miles south). Further out, 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
Around Robroyston, our work takes us to homes and buildings near Springburn Park and the streets around them. The closest station to Robroyston is Robroyston station, roughly 0.6 miles south-east. A little further out are Bishop's Castle (3.1 miles south-west) and Stobhill Hospital (1.6 miles west). Open spaces near Robroyston include Lenzie Moss and Hogganfield Loch.
What the job involves on each surface
Composite doors
Draughts round the door leaf normally come from worn seals or adjustment, not the mastic. We will tell you if that is what we find.
Timber windows & doors
Soft or rotten wood cannot be sealed successfully. We’ll point out any rot we find, as a joiner will need to deal with it.
When something else is needed
Some problems need a builder, plumber or other trade rather than us:
- Rotten timber, which needs a joiner first
- Condensation trapped between the panes
- Damp coming through the wall itself rather than the frame joint
If you are not sure, just email us at info@mrmastic.co.uk and we’ll give you a straight answer.
Surfaces we seal
- Composite doors
- Window sills
- Aluminium frames
- Timber windows & doors
- uPVC windows
- Patio & French doors
Also near Robroyston
Also in Robroyston
Signs you need window mastic in Robroyston
Joint shape matters as much as the product. A thin smear across a wide gap has nothing to it, and a gap filled solid cannot flex. That’s what backing rod is for.
Look out for any of the following:
- Gaps left after new windows were fitted
- Leaking joints at the ends of sills
- Damp patches on the reveal after heavy rain
- Black, perished sealant on frames
For landlords with property near Robroyston station, renewing tired window mastic between tenants heads off draught and damp complaints.
Before you book anyone
- What happens if the job turns out different
- Whether you can choose the colour
- Whether they seal over old material or remove it
- Whether they’re fully insured
What affects the cost of window mastic
You’ll get a clear quote before work begins. It takes into account:
- Whether old sealant or filler has to be cut out
- How much there is to do
- Whether the work is at height
- How many areas need sealing
What you pay reflects the work, not a rough estimate. That is why we ask about the job first.
What to tell us for a quote
A few details help us give you an accurate quote. When you ask for a quote, tell us:
- If someone has resealed it before
- The problem you’ve noticed
- The address or postcode of the job
- Pictures of the joints, sent by email
If you’re in Robroyston and need window mastic, email us at info@mrmastic.co.uk. A short description of the job and where it is helps us quote, and you will get a clear quote before work begins.
Your questions about window mastic in Robroyston
Can you do window mastic in Robroyston?
Yes, Robroyston is within the area we cover. We work across all of Scotland. Just send an email to info@mrmastic.co.uk with a few details of the job.
Can you help a landlord with a rental near Robroyston 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.
Do I have to be there?
We need access to the joints, so we’ll agree that with you when we book. Indoors, that generally means someone at home.
Do you have sealant for grey or black windows?
Yes, we choose a colour to suit the frame. Grey and black frames get grey or black sealant, and wood-effect frames normally suit brown.
What information do you need?
The location, the problem and the rough size of the job. If you can, email a few pictures.
Will resealing my frames help with draughts?
If the draught is coming in around the frame, yes. If it’s through the window’s own seals or a hinge, that is a different fix, and we’ll say so.
Can you do upstairs windows?
Yes, if safe access is possible. For high or awkward windows, we’ll tell you what access is needed.
Where is Mr Mastic based?
We are based in Crawley, West Sussex, and we cover South East England, London and all of Scotland.
Can I do it myself?
A DIY attempt does not rule out a professional job. We cut it out and start again, so just mention it when you contact us.
Some jobs are best left to a professional: work at height, external movement joints, fire-rated sealant and large areas need the right product, the right access and the right method.
Looking after it afterwards
So the new joints stay in good condition:
- Keep solvents and bleach off the sealant
- Keep drainage slots and sill grooves clear
- Wipe condensation off the frames
- Keep paint and stain on wooden frames in good order
Wipe the frames with soapy water when you clean the windows, and keep solvents and harsh chemicals off the joint.
On timber windows, water behind the joint can lead to rot. Once wood has rotted, it needs repair before it can be sealed, so early resealing is worth it.
How it works
On the day, we look over the joints with you first. Surfaces next to the work are protected before any work begins. Most jobs take a few hours for a handful of frames, longer for a whole house. 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.
- We start by checking each window and door with you.
- Next the failed sealant is cut away and the joint cleaned.
- We fit backing rod in deep gaps so the sealant is the right depth.
- We apply a weatherproof sealant to match the frame and tool it neatly.
- Finally we tidy up and check each joint.
How to prepare
- Mention any parking rules near the property
- For business premises, tell us about site rules or sign-in
- Tell us about any previous sealing or DIY attempts
Getting a quote
There’s no standard price list, as no two jobs are quite the same. Instead, your job gets its own clear quote. To arrange one, drop us a line at info@mrmastic.co.uk.