Glasgow · Scotland
Window Mastic in Finnieston
Specialist window mastic for Finnieston: the right sealant, proper preparation and a neat finish. Ask us for a quick quote.
- Mastic that’s falling out in pieces
- Cracked or shrunken mastic around the frame
- Damp patches on the reveal after heavy rain
When something else is needed
To be straight with you, there are a few things sealant will not fix:
- A failed sealed unit that has misted up
- A frame that has rotted at the joint
- Damp problems in the wall away from the window
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.
Joints and surfaces we work on
- Timber windows & doors
- Aluminium frames
- uPVC windows
- Patio & French doors
- Composite doors
- Window sills
Window mastic in Finnieston
Frames and walls don’t move together. Plastic and aluminium frames move with the temperature, while masonry stays fairly still. That’s why the joint needs a flexible, low-modulus sealant rather than something rigid. If you have cracked or shrunken mastic around the frame and sealant in the wrong colour for the frame, we can put it right.
Scotland’s cities are full of stone-built tenements and terraces, in sandstone or granite. Natural stone around older windows needs a sealant that will not mark or attack it, which generally means a neutral-cure product or a traditional sand mastic rather than an acetoxy silicone.
We guarantee the work for a year. If something isn’t right with it in that time, tell us and we’ll put it right.
- Place
- Finnieston (G3, G51, G11)
- Wider area
- Glasgow
- Cover
- One year on every job
- Price
- A clear quote up front
- info@mrmastic.co.uk
- Updated
- 26 October 2026
Landlord and commercial work in Finnieston
Mouldy or split sealant often shows up at the end of a tenancy, and it’s easy to sort out between tenants. We can quote for more than one property at once.
We regularly work with letting and managing agents. Tell us the address, the job and how access works and we’ll give you a quote.
DIY versus a professional finish
Overfilling a joint is a classic DIY mistake. A thick, smeared bead looks untidy and doesn’t move well, and the joint depth matters as much as the finish.
What a professional job adds is preparation and the right product. We take joints back to clean, dry surfaces, and the sealant is chosen for how the joint moves and where it is, then guaranteed for a year.
Nearby places to Finnieston
More services for Finnieston
Leave it or put it right?
The work is quick compared with the damage it prevents: it takes a few hours for a handful of frames, longer for a whole house. Leave it until water is coming in and you may need plastering and decorating as well. In a Scottish city tenement, failed sealant affects more than one flat: a leak can come through the ceiling below, and gaps in shared walls or fire-rated joints matter to every flat.
Rather than a set price list, we price the job in front of us: the amount of work, the old material and the access. You’ll know the price before we begin.
Why choose Mr Mastic in Finnieston
- Over 20 years’ experience
- 4.9 on Google from 180+ five-star reviews
- Any old sealant cut out fully, not covered over
- Sealant colour chosen to suit
Read what affects the cost and customer reviews.
Questions from Finnieston
I let a flat near Exhibition Centre station. Can you help?
Yes, landlords and agents are among the people we work for, and several properties can go on one quote. You can email us at info@mrmastic.co.uk with the details for a clear quote.
Is Finnieston in your area for window mastic?
Yes, Finnieston is within the area we cover. Our work covers the whole of Scotland. Just send an email to info@mrmastic.co.uk with a few details of the job.
Are you ARBOMaster approved?
Yes. We are approved under the ARBOMaster scheme, which is run for the Arbo sealant brand.
Can resealing stop a draught around my window?
Yes, where the draught is at the frame edge. We check where the draught is before work begins.
Does the work come with a guarantee?
Yes, for 12 months. A yearly look at the joints helps them last.
Will it make a mess?
No. We protect the surfaces around the joints, and we clear up the old sealant and our materials before we leave.
Do you remove the old sealant?
Always. Sealing over the old bead is the commonest cause of early failure, and it’s something we never do.
Can I add another job to the visit?
Yes. Just list everything you need and we will quote it together.
Frames and glazing around Finnieston
The west of Scotland is wetter than the east, so there’s plenty of rain for the mastic around window and door frames to keep out. Under the Repairing Standard, private landlords in Scotland have to keep homes wind and watertight, and sound outside sealant is part of that.
For site and facilities teams at buildings such as Glasgow Gaelic School, its window and door frames need their mastic kept sound, just like a home’s. For an older house near a landmark such as Sandyford Henderson Memorial Church, the joint between an old wall and a newer frame is normally the first place rain gets in.
Finnieston is about 1 mile north-west of Glasgow, in Glasgow. Anywhere in G3, we can carry out window mastic at your property. Across Glasgow, we cover 183 places, and Finnieston is one of them.
Work in G3, G51 and G11 works the same way as everywhere else we cover. If you need window mastic at a property on Kent Road, Haugh Road and Bunhouse Road or a nearby road, we can help. Neighbouring places we cover for window mastic include Kelvinhaugh (1 mile north-west), Kelvingrove (1 mile north-east), Sandyford (1 mile east), Plantation (1 mile south) and Cessnock (1 mile south-west). We also work in nearby towns such as Langside (3 miles south), Yoker (4 miles north-west), Mount Florida (3 miles south-east), Hillpark (3 miles south), Temple (3 miles north-west) and Merrylee (4 miles south).
Local landmarks in Finnieston
Locally, jobs take us to homes and businesses close to Kelvingrove Park, Old Toll Bar and Glasgow University Library and the streets around them. Nearby too are College of Piping (0.9 miles north), Lorne Street Primary School (0.6 miles south) and St Vincent Street Church (0.9 miles east). There’s a railway station in Finnieston itself: Exhibition Centre station. Other landmarks nearby include Glasgow Science Centre (under half a mile south-west) and Chinatown (1.1 miles north-east). Green spaces nearby include Hogganfield Loch.
The process
A visit follows a simple pattern: we look at the joints together, mask and protect the surrounding surfaces, do the work and tidy away. Most jobs take most of a day for a typical house, less for a few frames. For a tenement in Finnieston, 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 start by checking each window and door with you.
- The old mastic is cut out and the surfaces cleaned back.
- Where gaps are deep, backing rod goes in first.
- New exterior sealant goes on in a matching colour and is tooled smooth.
- Finally we tidy up and check each joint.
Getting ready for the visit
- Keep pets and children clear of the area while we work
- Clear the area around the work
- For indoor joints, keep the area dry beforehand if you can
Get a quote
We quote each job on its own. Simply drop us a line at info@mrmastic.co.uk and describe the job, and photos are welcome.
Read more
What we’re called out for in Finnieston
Every frame moves through the day. A plastic or aluminium frame lengthens in sunshine and shortens as it cools, while the masonry beside it stays put. If the sealant can’t stretch, it splits.
The problems people normally mention when they call are:
- Whistling draughts around closed windows
- Rushed sealant from a window installation
- Damp patches on the reveal after heavy rain
- Mastic that has split away from the wall
If you let a flat or house near Exhibition Centre station, renewing tired window mastic between tenants heads off draught and damp complaints.
What your quote should include
- What insurance they hold
- Whether they seal over old material or remove it
- How the joint is cleaned and prepared
- Who turns up on the day
What the job involves on each surface
Aluminium frames
Aluminium moves with heat, and the frames are often slimmer than uPVC. A neat, narrow bead in a colour to match keeps the clean look.
uPVC windows
Plastic frames move a lot between a hot afternoon and a cold night, so we use a flexible, low-modulus sealant. White is the usual colour, with brown, anthracite grey and black for coloured frames.