Glasgow · Scotland
Window Mastic in Nethercraigs
We cover Nethercraigs for mastic around window and door frames, sills and patio doors. Old sealant removed completely, joints prepared properly and a one-year guarantee.
- Old mastic that has gone black or come away
- Gaps where the sill meets the wall
- Draughts coming in around windows and doors
Honest limits
We will not take on work that will not last, so here’s what sealant cannot put right:
- A sash or casement that will not close properly
- A door that needs adjusting, rehanging or new seals
- Condensation trapped between the panes
Not sure which it is? You can drop us a line at info@mrmastic.co.uk and we’ll tell you honestly before you book.
What we seal
- Window sills
- Composite doors
- Aluminium frames
- uPVC windows
- Patio & French doors
- Timber windows & doors
About our window mastic in Nethercraigs
Behind a thin line of old mastic there’s sometimes a deep void. Filling it with sealant alone leaves a joint that can’t move properly, so we fit backing rod to set the right depth. The sealant then grips the two sides it should. Common call-outs are for whistling draughts around closed windows and gaps where the sill meets the wall, on composite doors, patio & French doors and aluminium frames.
Older stone-built tenements in Scotland’s cities were built with sash and case windows, though many have since been replaced. In Nethercraigs, as anywhere, the mastic between frame and wall is what stops draughts and rain getting in.
A one-year guarantee comes as standard, so you are not left on your own once the job is done.
- Location
- Nethercraigs (G52, G53)
- Region
- Glasgow
- Cover
- 12 months on all our work
- Quote
- A clear quote up front
- info@mrmastic.co.uk
- Page updated
- 26 October 2026
More services for Nethercraigs
Can I do it myself?
Some jobs are best left to a professional: high-level joints, fire-rated gaps, external movement joints and big jobs call for the right materials, safe access and experience.
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 does not work out, we can still put it right.
What happens if it’s left?
Running fresh sealant over the old joint is tempting, but it won’t grip old, dirty sealant. It peels before long, and water still gets in behind. Proper resealing starts with removing the old joint. 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.
Combining jobs into one visit generally makes better use of the time than several visits, so tell us about everything that needs sealing. We’ll send you a clear quote for the lot.
Why Nethercraigs customers choose us
- Arbo and Everbuild products
- Homes, businesses and hotels
- White, clear, grey or coloured to suit, where the product allows
- More than 20 years in sealant work
Take a look at our cost guide and what customers say.
How it works
All our tools and materials come with us in the van, so there’s nothing for you to buy. After a quick look at the joints together, we protect the area and start. Most jobs take a morning for a couple of windows and a door. For a tenement in Nethercraigs, 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.
- First, we go round the frames with you and agree the list.
- We remove the old mastic and clean the frame edge and wall.
- Deep gaps get closed-cell backing rod to set the depth.
- The new sealant goes on in white, brown, anthracite grey, black or clear to suit.
- Every joint is tooled smooth and checked before we leave.
Getting ready for the visit
- Clear items away from the joints we are working on
- Mention if the joints have been sealed before
- On commercial sites, let us know about site rules
Getting a quote
Call for a quick quote, or email us if that is easier. Tell us about the joints that need doing and we’ll talk you through the work and send you a clear quote.
Related advice
What the job involves on each surface
Patio & French doors
Door frames take knocks and movement every time the doors are used. The sealant must cope with it.
uPVC windows
uPVC expands and contracts noticeably with temperature, so the joint needs a low-modulus sealant that stays flexible. We match white, brown, anthracite grey and black frames.
Nethercraigs homes and the weather
Private landlords in Scotland must meet the Repairing Standard, which includes keeping a home wind and watertight, and failed outside joints work against that. Glasgow’s tenements are largely red and blond sandstone, and sandstone is porous, so any sealant against it has to be one that will not stain or attack it.
Managing a site like Lourdes Secondary School? Then the mastic around its windows and doors needs looking after like any other building’s. Letting a property close to Corkerhill station? Then renewing tired window mastic between tenants heads off draught and damp complaints.
Nethercraigs is about 3 miles south-west of Glasgow, in Glasgow. Homes, rented property, offices and hotels in Nethercraigs can book us for window mastic. The work is guaranteed for a year. Our Glasgow coverage runs to 183 places, Nethercraigs among them.
We work across the G52 and G53 postcode area for window mastic and the streets around it. Window mastic is available to properties on Alcaig Road, Clunie Road and Langton Road and the roads around them. We also cover the places around Nethercraigs: Corkerhill (1 mile south-east), Mosspark (1 mile north-east), Halfway (1 mile north), Craigton (1 mile north) and Pollok (1 mile south-west). We also work in nearby towns such as Glasgow (3 miles north-east), Hillhead (3 miles north-east), Dowanhill (3 miles north-east), Woodlands (3 miles north-east), Woodside (4 miles north-east) and North Kelvinside (4 miles north-east).
Around Nethercraigs
We work in homes and buildings around Craigton Primary School and Bellahouston Park, among other places. There’s a railway station in Nethercraigs itself: Corkerhill station. A little further out are Silverburn Shopping Centre (1 mile south) and Glasgow Museums Resource Centre (2.1 miles south-west).
FAQs for Nethercraigs
Can you help a landlord with a rental near Corkerhill station?
Yes, we work for landlords and letting agents. Just drop us a line at info@mrmastic.co.uk and tell us about the property, and we’ll give you a clear price.
Can you do window mastic in Nethercraigs?
Yes, Nethercraigs is within the area we cover. Our work covers the whole of Scotland. Just email us at info@mrmastic.co.uk with a few details of the job.
Can you seal the gap between the frame and the plaster indoors?
Yes. Outside is the weather seal; inside closes the gap to the plaster. We do one or both.
Does the work come with a guarantee?
Yes, with our one-year guarantee. A yearly look at the joints helps them last.
Should I try DIY first?
Some simple jobs can be done by a careful DIYer. Most DIY failures come from sealing over old material, wet joints or too much sealant.
Do you work for hotels and businesses?
Yes, regularly. Larger jobs can be planned room by room or area by area.
How long before the joint can be used?
Different products cure at different speeds, so follow the cure time we give you.
Is it messy?
No. We work neatly, protect the area around the joints and tidy up afterwards.
Quotes for window mastic in Nethercraigs
Every job gets its own quote. This is what makes a difference:
- The product the joint needs
- The number and length of the joints
- How easy the joints are to reach
- Whether there’s mould to deal with
The cost reflects the work involved, not guesswork. That’s why we ask about the job first and give you a clear quote before work begins.
What we need to know
When you contact us, it’s useful to know:
- Any access issues, like height or stairs
- Roughly how big the job is
- Pictures of the joints, sent by email
- What the problem is, such as mould, gaps, leaks or cracking
A good description makes for an accurate quote. Tell us where the job is, what’s wrong and how much there is, and email pictures if that is easy.
Signs you need window mastic in Nethercraigs
Water runs down the glass onto the sill, and the ends of the sill, where it meets the wall, are where it gets in. When that sealant fails, water gets into the wall or under the frame.
Any of these means the joints need attention:
- Mastic that has split away from the wall
- Cracked internal joints between frame and plaster
- Draughts coming in around windows and doors
- Leaking joints at the ends of sills
In the older streets around St James' (Pollok) Parish Church, the joint between an old wall and a newer frame is normally the first place rain gets in.
Before you book anyone
- What preparation is included
- The length of the guarantee
- Are they insured?
- How hidden problems are handled