Glasgow · Scotland
Shawlands Window Mastic
Window mastic for Shawlands and the surrounding area: the right sealant, proper preparation and a neat finish. Call for a quick quote.
- Gaps where the sill meets the wall
- A bead that does not match the frame
- Draughts coming in around windows and doors
Keeping the joints in good condition
Simple care keeps the joints in good condition. Our advice:
- Do not use solvent cleaners on the joint
- Clear any debris from frame drain holes
- Keep paint off silicone joints
- Keep paint and stain on wooden frames in good order
Check the drainage slots in the frames aren’t blocked, so rain drains out rather than building up at the sealant.
Water trapped behind a failed joint can start rot in timber frames and sills. Once wood has rotted, it needs repair before it can be sealed, so early resealing is worth it.
Window mastic for homes and businesses in Shawlands
The mastic around a window or door seals the gap between the frame and the wall. When it cracks, hardens or pulls away, draughts and rain get in. The old mastic is removed and the joint resealed with a flexible exterior sealant. Typical jobs include cracked sealant at the sill ends and cracked internal joints between frame and plaster, on uPVC windows, aluminium frames and composite doors.
Sash and case windows are a feature of older tenements in all four Scottish cities, and plenty still have them. In Shawlands, as anywhere, the mastic between frame and wall is what stops draughts and rain getting in.
The work is covered for a year after we finish. If there’s a problem with it, please send an email to info@mrmastic.co.uk.
- Where
- Shawlands (G41, G43, G42)
- Region
- Glasgow
- Guarantee
- 12 months on all our work
- Price
- A clear quote up front
- info@mrmastic.co.uk
- Last updated
- 26 October 2026
When something else is needed
We’d rather tell you now than do work that will not last, so here’s what sealant can’t put right:
- Faulty window hardware
- Worn gaskets, brush seals or a door that has dropped
- Soft or decayed wood in the frame
Not sure which it is? You can send an email to info@mrmastic.co.uk and we will tell you honestly before booking.
Where we work in Shawlands
- Patio & French doors
- Composite doors
- Aluminium frames
- uPVC windows
- Timber windows & doors
- Window sills
Windows and doors in Shawlands
Glasgow’s tenements are largely red and blond sandstone, and porous sandstone needs a sealant that will not mark it. 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. Who owns the windows depends on the title deeds.
For landlords with property near Shawlands station, sound mastic around windows and doors keeps out the draughts and damp that tenants notice first. For site and facilities teams at buildings such as Shawlands Academy, the mastic around its windows and doors needs looking after like any other building’s.
Shawlands is about 2 miles south of Glasgow, in Glasgow. For window mastic in and around Shawlands, please send an email to info@mrmastic.co.uk for a quick quote. We are based in Crawley and cover Glasgow, Shawlands included. We cover 183 towns and villages across Glasgow.
Postcode districts we cover here for window mastic: G41, G43 and G42. Streets in the area include Iser Lane, Haggs Road and Hector Road, all of which we cover. Shawlands is on the A77, so it’s easy for us to get to. Close by, we work in Langside (1 mile south-east), Pollokshaws (1 mile south-west), Crossmyloof (1 mile north), Auldhouse (1 mile south-west) and Strathbungo (1 mile north-east). Larger places within reach include Hillhead (3 miles north), Dowanhill (3 miles north), Woodlands (3 miles north), Woodside (3 miles north), North Kelvinside (4 miles north) and Partickhill (3 miles north).
Landmarks near Shawlands
Locally, jobs take us to homes and businesses close to Queen's Park, Couper Institute and Library and The Sir John Stirling Maxwell pub, among other places. Shawlands has its own railway station: Shawlands station. Other landmarks nearby include Scottish Football Museum (1.4 miles east) and Silverburn Shopping Centre (2.1 miles west). For a walk, there’s Cathkin Braes.
When to call us in Shawlands
On timber frames, paint and putty build up around the joint. Mastic painted over many times cracks with the paint, and timber moves with moisture as well as temperature.
Any of these means the joints need attention:
- Cracked or shrunken mastic around the frame
- Whistling draughts around closed windows
- Gaps between the frame and the inside reveal
- Leaking joints at the ends of sills
For an older house near a landmark such as Shawlands Trinity Church and Halls, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
What to look for in a quote
- What happens if the job turns out different
- What the quote includes, VAT included or not
- How long the guarantee is
- How the colour is chosen
How we quote for window mastic
There’s no set price list, because jobs vary so much. The quote depends on:
- Whether the work is at height
- Any mould that needs treating
- The product the joint needs
- The number of rooms or windows
Commercial jobs are quoted on the same basis as homes: the amount of work, the access and the products needed, along with when we can work on site. Ask us for a quote and we’ll explain what it covers.
What we need to know
To make quoting easier, please include:
- How we’d reach the joints
- The address or postcode of the job
- Whether it’s a home or a business
- How many joints, rooms or windows are involved
There’s no standard price list, because every job is different. Instead, we send you a clear quote for your job. To get started, drop us a line at info@mrmastic.co.uk.
Also near Shawlands
Also in Shawlands
Questions from Shawlands
How do repairs to the shared parts of a tenement in Shawlands get organised?
The owners of the flats usually agree repairs to shared parts like the roof and outside walls, and many buildings have a factor to arrange it. Where the title deeds are silent, the Tenements (Scotland) Act 2004 fills the gaps. Windows often belong to the individual flat, but it’s worth checking your deeds.
Can you do window mastic in Shawlands?
Yes. Our work covers the whole of Scotland, and Shawlands is part of that. You can email us at info@mrmastic.co.uk and let us know what needs doing, and we will send you a clear quote.
Which products do you use?
We choose the sealant for the joint, not the other way round. Movement, water and weather all affect the choice, and we’ll tell you what we’re using.
Where is Mr Mastic based?
We work from Crawley. We cover Shawlands and the rest of Glasgow, along with the rest of our area.
Can resealing stop a draught around my window?
Often, yes. The gap between frame and wall is a common source of draughts, and resealing inside and out closes it.
How long should I leave it?
Many sealants skin over quickly but take longer to cure fully. We will tell you how long to leave the joint before we leave.
Can you get sealant to suit coloured frames?
Yes. Grey and black frames get grey or black sealant, and wood-effect frames usually suit brown.
How long will my window job take?
It depends on access, the old mastic and the size of the frames. We’ll tell you how long your job needs when we quote.
Landlords, agents and businesses in Shawlands
We work for landlords and agents as well as homeowners. Resealing between tenancies keeps a property looking cared for.
Water getting past a failed joint can damage the building, which matters even more when someone else lives there. Keeping joints in good order is simple maintenance that we can handle for you.
DIY versus a professional finish
Sealing over old silicone is the commonest DIY error. New silicone will not bond to old, so it peels away and traps moisture behind it. All the old material has to come out first.
A DIY attempt doesn’t rule out a professional job. We cut it out and start again, so just mention it when you contact us.
What we do, step by step
When we arrive, we start by going over the job with you. Surfaces next to the work are protected before work begins. The work normally takes anything from an hour or two to a full day, depending on how many frames there are. In a Scottish city, a lot of jobs are in tenement flats, up a common stair from a shared close. In Shawlands, it helps to know the floor, the door entry arrangements and the nearest parking.
- First, we confirm safe access to each frame.
- All the failed sealant is cut away, along with any loose debris.
- Frame and wall are cleaned and must be dry before sealing, and primed where the sealant calls for it.
- Deep voids are backed, then the sealant is gunned in.
- The joint is shaped to shed water and the area tidied.
Before we arrive
- Let us know about stairs, lifts or work at height
- Move anything stored near the joints
- Mention any parking rules near the property
How to get a quote
For a quick quote, get us on the phone, or send an email if you’d rather. Tell us about the joints that need doing and we will explain what’s involved and give you a clear price.