Glasgow · Scotland
Kelvinside Window Mastic
Window mastic in Kelvinside from a team with over 20 years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Gaps left after new windows were fitted
- A bead that does not match the frame
- Gaps between the frame and the inside reveal
How it works
Good joint work is mostly preparation, so that is where we spend the time. Every joint is cleaned and dried before new material goes in. All told, the work takes a few hours for a few frames, or a day or more for a whole house. Many homes in Scotland’s cities are tenement flats, reached through a shared close and up a common stair. For a job in Kelvinside, tell us the floor, how the door entry system works and where we can park nearby.
- Each frame is looked over and we agree which ones need resealing.
- The old mastic is cut out and scraped back to clean surfaces.
- Where the gap is deep, backing rod goes in first.
- A flexible exterior sealant is applied in a colour to suit the frame.
- Every joint is tooled smooth and checked before we leave.
Before we arrive
- Let us know about stairs, lifts or work at height
- Mention any parking rules near the property
- Tell us about any previous sealing or DIY attempts
How to get a quote
A good description makes for an accurate quote. Tell us where the job is, what’s wrong and how much there is, and email photos if that’s easy.
Related advice
About our window mastic in Kelvinside
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 and quietens the whistle on windy days. If the draught is through the window seals instead, we’ll tell you. We’re often asked to deal with a bead that doesn’t match the frame and water coming in at the bottom corners of a door, on window sills, timber windows & doors and patio & French doors.
Sash and case windows are a feature of older tenements in all four Scottish cities, and plenty still have them. Whether you are in a tenement flat or a house in Kelvinside, the joint between frame and wall is what keeps the weather out.
All our work is covered by our 12-month guarantee, wherever you are in Glasgow.
- Place
- Kelvinside (G12, G11, G20)
- Region
- Glasgow
- Cover
- A year, on every job
- Price
- A clear quote up front
- info@mrmastic.co.uk
- Page updated
- 26 October 2026
Nearby places to Kelvinside
What else we do in Kelvinside
Common questions in Kelvinside
Do you work for landlords with property near Hyndland station?
Yes, rental work is part of what we do. Just drop us a line at info@mrmastic.co.uk and tell us about the property, and we will send you a clear quote.
How is work on the outside of a tenement in Kelvinside usually arranged?
Shared parts of a tenement, such as the roof and outside walls, are normally 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 don’t. Your title deeds will say who owns the windows.
Do you come to Kelvinside?
Yes. We cover Kelvinside, as part of our work across South East England, London and Scotland. For a quote, send an email to info@mrmastic.co.uk.
Will resealing my frames help with draughts?
In many cases. Air often gets in between the frame and the wall, and sealing the inside and outside joints closes that path.
What sealant do you use?
The product depends on the job: sanitary silicone where it gets wet, and sealants suited to movement or weather elsewhere. We use products from Arbo and Everbuild.
Does someone need to be in?
That depends on where the joints are. For work indoors, someone needs to let us in.
Do the sealants smell?
Possibly a little. It fades as the sealant cures.
Should I try DIY first?
Sometimes. Preparation is everything: all the old sealant out, and a clean, dry joint. If it does not work out, we can redo it.
What affects the cost of window mastic
Some jobs are bigger than they look, and some smaller. The main factors:
- How many areas need sealing
- Any mould that needs treating
- Any working-time requirements on site
- The old material and how stubborn it is
No two jobs are quite the same, so we quote each one individually. Size, access and the product the joint needs all play a part, and we will explain the quote if you ask.
Asking for a quote
What to tell us when you ask for a quote:
- Photos by email, if that is easy
- Whether it has been sealed before
- The rough size of the job
- The address or postcode of the job
Call for a quick quote, or email us if that is easier. Describe what needs sealing and we will explain what’s involved and give you a clear quote.
Common problems we fix in Kelvinside
Joint shape matters as much as the product. A thin smear across a wide gap has nothing to it, and a gap filled solid can’t flex. That’s what backing rod is for.
The most common problems we see are:
- Cracked sealant at the sill ends
- Draughty joints inside around the window
- Rushed sealant from a window installation
- Mastic that’s falling out in pieces
Managing a site like Cleveden Secondary School? Then larger buildings have plenty of frames, and the mastic around each one ages.
Before you book anyone
- What insurance they hold
- What the cure time is
- Is VAT in the price?
- The length of the guarantee
Window mastic in Kelvinside: local notes
Sash and case windows are common in older Scottish homes, often pointed into the wall with traditional sand mastic. The Tenements (Scotland) Act 2004 sets out how owners share the upkeep of common parts like the roof and outside walls, and many buildings use a factor to arrange it. Windows generally belong to the flat, but the title deeds have the final say.
Homes close to St John's Renfield Church include some older properties, and the joint between an old wall and a newer frame is usually the first place rain gets in. If you let a flat or house near Hyndland station, cracked frame mastic tends to show up as a draught or damp complaint, so it’s worth checking between lets.
Kelvinside is about 2 miles north-west of Glasgow, in Glasgow. Kelvinside gets the same service as everywhere we cover: the old material taken out, joints prepared properly and a 12-month guarantee. Across Glasgow, we cover 183 places, Kelvinside among them.
Postcode districts we cover here for window mastic: G12, G11 and G20. If you need window mastic at a property on Kew Lane, Ford Road and Dudley Lane or anywhere close by, our applicators can take on the job. Neighbouring places we cover for window mastic include Hyndland (1 mile south-west), Dowanhill (1 mile south), Kelvindale (1 mile north-west), Partickhill (1 mile south) and Partick (1 mile south). Larger places within reach include Calton (3 miles south-east), Langside (4 miles south), Yoker (3 miles west), Mount Florida (5 miles south-east), Hillpark (5 miles south) and Shawlands (4 miles south).
Landmarks near Kelvinside
Typical jobs here are in homes near Dawsholm Park, Church Street Primary School and Glasgow University Library and the streets around them. Also close by are The Esquire House (0.7 miles north-west) and St Peter's Boys School (0.8 miles south). There’s a railway station in Kelvinside itself: Hyndland station. Nearby you’ll also find Glasgow Museum of Transport (1.1 miles south) and Chinatown (2 miles south-east). For a walk, there’s Castle Hill and Kilmardinny.
What we can’t put right
Sealant isn’t the answer to every problem, and we will tell you before work begins. It will not solve:
- Misting between the panes of a double-glazed unit (that needs a new unit)
- Soft or decayed wood in the frame
- Broken hinges, locks or handles
If you’re not sure, just drop us a line at info@mrmastic.co.uk and we will give you a straight answer.
Joints and surfaces we work on
- Patio & French doors
- Composite doors
- Timber windows & doors
- Aluminium frames
- Window sills
- uPVC windows
Why deal with it now?
Resealing frames is a short job: the visit takes a few hours for a few frames, or a day or more for a whole house. Wait for damp to appear and there may be plaster and decorating to sort out too. For landlords in Kelvinside, damp and leaks can be a Repairing Standard issue, so it’s worth fixing failed sealant before a tenant reports it.
Leaving a failed joint generally makes the job bigger, not smaller, as water and mould keep getting in. If you are not sure whether it needs doing, drop us a line at info@mrmastic.co.uk and we will give you an honest view and a quote.
What you get with us
- Homes, businesses and hotels
- Full insurance on every job
- Every job guaranteed for a year
- Approved under the ARBOMaster scheme
Read what affects the cost or customer reviews.
DIY versus a professional finish
If you do try it yourself, take your time over the preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it fails, we can still redo it.
Too much sealant is as bad as too little. A heavy bead looks messy and copes badly with movement, and getting the depth right matters as much as the look.
For landlords and businesses
Whether it’s one flat or a portfolio, the work is the same standard: the old material taken out, careful preparation and a 12-month guarantee.
A neglected joint can let water reach the structure, which is a bigger problem in a rented property. Keeping joints in good order is simple maintenance.