Glasgow · Scotland
Window Mastic in North Kelvinside
Mastic around window and door frames, sills and patio doors for North Kelvinside, backed by a one-year guarantee. Call for a quick quote.
- Sealant in the wrong colour for the frame
- Water coming in at the bottom corners of a door
- Gaps where the sill meets the wall
Window mastic in North Kelvinside
There are two joints on most windows. The external joint is the weather seal; inside, the joint between frame and plaster stops draughts and tidies the reveal. We seal one or both, depending on what’s needed. If you have gaps left after new windows were fitted and damp patches on the reveal after heavy rain, we can help.
Sash and case windows are a feature of older tenements in all four Scottish cities, and plenty still have them. In North Kelvinside, as anywhere, the mastic between frame and wall is what stops draughts and rain getting in.
We stand behind the work with a one-year guarantee, so you’re covered after we have gone.
- Place
- North Kelvinside (G20, G12, G4)
- Wider area
- Glasgow
- Guarantee
- 12 months on all our work
- Quote
- A clear price before we start
- info@mrmastic.co.uk
- Last updated
- 26 October 2026
How to look after the new joints
Joint life depends on how it’s used and looked after. Here’s what we suggest:
- Keep timber frames painted
- Avoid blasting the frames with a pressure washer
- Do not use solvent cleaners on the joint
- Keep paint off silicone joints
Keep the new mastic undisturbed while it cures, following the cure time we give you. Do not point a pressure washer at the joints.
Wet, windy weather is when failed mastic shows itself, but sealant goes on best when frames and walls are dry. Sorting cracked mastic early means the joint is sound before the bad weather.
Also near North Kelvinside
Other services in North Kelvinside
What happens on the day
Every visit runs the same way: we check the joints, mask and protect the surrounding surfaces, do the work and clear up. Most jobs take a few hours for a handful of frames, longer for a whole house. Parking in city streets around North Kelvinside 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.
- Each frame is looked over and we agree which ones need resealing.
- We remove the old mastic and clean the frame edge and wall.
- Where the gap is deep, backing rod goes in first.
- A flexible exterior sealant is applied in a colour to suit the frame.
- We tool each bead neatly and check every joint is closed.
How to prepare
- Mention any tricky access
- Plan for the work area to be out of bounds to pets and children
- Let us know about earlier repairs to the joints
Ask for a quote
For a quote, drop us a line at info@mrmastic.co.uk and tell us where the job is and what the problem looks like. We’ll send you a clear quote before any work starts.
Related advice
What we are called out for in North Kelvinside
Some failures date back to when the windows were fitted. Sealant run over dust, wet brick or loose mortar never bonded as it should, and it lets go sooner than it should.
Most people get in touch after spotting something like this:
- Damp patches on the reveal after heavy rain
- Cracked internal joints between frame and plaster
- Gaps left after new windows were fitted
- Old mastic that has gone black or come away
Tenement House, about 0.9 miles south-east, is one of the historic houses in the wider area around North Kelvinside, and older homes nearby need a sealant that suits their walls.
What to look for in a quote
- What happens if they find a problem under the old sealant
- What preparation is included
- What the cure time is
- What the quote includes, VAT included or not
North Kelvinside homes and the weather
Sash and case windows are common in older Scottish homes, often pointed into the wall with traditional sand mastic. Historic houses like Tenement House (about 0.9 miles south-east) are a reminder that the area around North Kelvinside has older buildings as well as new. In older buildings, older timber frames in brick or stone need a different approach from a modern uPVC window.
Schools such as College of Piping are buildings too, and the mastic around its windows and doors needs looking after like any other building’s. Rented homes near Possilpark & Parkhouse station change hands often, and cracked frame mastic tends to show up as a draught or damp complaint, so it’s worth checking between lets.
North Kelvinside is about 2 miles north of Glasgow, in Glasgow. Homes, rented property, offices and hotels in North Kelvinside can book us for window mastic. The work is guaranteed for a year. Across Glasgow, we cover 183 places, North Kelvinside among them.
Work in G20, G12 and G4 is quoted and booked the same way as anywhere else. We cover properties on Eton Lane, Park Road and Oban Lane and the roads around them. If you are just outside North Kelvinside, we cover Woodside (1 mile south-east), Kelvinbridge (1 mile south), Hillhead (1 mile south-west), Woodlands (1 mile south) and Ruchill (1 mile north-east). Larger places within reach include Calton (3 miles south-east), Langside (4 miles south), Yoker (4 miles west), Mount Florida (4 miles south), Hillpark (5 miles south) and Shawlands (4 miles south). Being one of Glasgow’s larger places, North Kelvinside has every kind of property, from flats to offices.
Around North Kelvinside
Around North Kelvinside, our work takes us to homes and buildings near Church Street Primary School, Glasgow University Library and Hillhead High School, among other places. Nearby too are The Crosslands pub (within half a mile north-west) and Kelvingrove Park (0.8 miles south-west). For rail, the closest station is Possilpark & Parkhouse station, about 1.1 miles north-east of the centre. Well-known places in the area include Chinatown (0.9 miles south-east) and Oakbank Hospital (0.7 miles south-east). For a walk, there’s Castle Hill and Kilmardinny.
North Kelvinside questions
I let a flat near Possilpark & Parkhouse station. Can you help?
Yes, we work for letting agents and landlords. You can email us at info@mrmastic.co.uk with the address and a few details, and we’ll give you a fixed price before any work starts.
How do repairs to the shared parts of a tenement in North Kelvinside get organised?
It normally goes through the owners together, or through the factor if the building has one. The Tenements (Scotland) Act 2004 covers the common parts where the deeds do not.
When is the sealant fully cured?
It depends on the product and the temperature. Before we leave, we will tell you the cure time.
Will new mastic stop draughts?
Yes, if the air is getting in around the frame. If it’s through the window’s own seals or a hinge, that is a different fix, and we will say so.
Can new window sealant be painted?
It depends on the sealant. Some hybrid sealants can be painted; silicone cannot. Mention any painting plans before we start.
How many windows can you do in a day?
The work takes a morning for a couple of windows and a door. Access and the amount of old mastic make the biggest difference.
Are you ARBOMaster approved?
Yes. We hold ARBOMaster approved applicator status, and we are fully insured.
Do you come to North Kelvinside?
Yes, we do. North Kelvinside is part of the area we cover, and the service is the same as everywhere else.
When something else is needed
Some problems need a builder, plumber or other trade rather than us:
- Broken hinges, locks or handles
- Damp problems in the wall away from the window
- Draughts through the window seals rather than the frame
If in doubt, email us at info@mrmastic.co.uk and we will say what we think before booking.
Where we work in North Kelvinside
- Patio & French doors
- uPVC windows
- Aluminium frames
- Timber windows & doors
- Composite doors
- Window sills
Landlords, agents and businesses in North Kelvinside
Failed sealant is one of the commonest items on a check-out report. Several properties can be quoted together.
Water getting past a failed joint can damage the building, which is a bigger problem in a rented property. Resealing at the right time is simple maintenance that we can handle for you.
What affects the quote in North Kelvinside
We quote each job individually. This is what makes a difference:
- Whether old sealant or filler has to be cut out
- Whether there’s mould to deal with
- Any working-time requirements on site
- How many rooms, windows or areas are involved
No two jobs are quite the same, so we quote each one individually. Size, access and the product the joint needs all make a difference, and we’ll explain the quote if you ask.
What to tell us for a quote
Before you ask for a quote, have a think about:
- A few pictures by email, if you can
- If someone has resealed it before
- Where the property is
- The type of property
The more we know about the job, the more useful the quote. Tell us where the job is, what’s wrong and how much there is, and add photos by email if you can.
Different surfaces, different methods
Aluminium frames
Metal frames expand in the sun and are often slim, with little room for error. A tidy bead in anthracite grey, black or a matching colour suits the frame.
Patio & French doors
Heavy door frames can move more than windows. A flexible sealant copes with that.