Glasgow · Scotland
Craigend Window Mastic
Mastic around window and door frames, sills and patio doors for Craigend, backed by a one-year guarantee. Call for a quick quote.
- Whistling draughts around closed windows
- Leaking joints at the ends of sills
- Old mastic that has gone black or come away
Questions from Craigend
I let a flat near Robroyston station. Can you help?
Yes. We work for letting agents and landlords as well as homeowners. You can drop us a line at info@mrmastic.co.uk with the details for a clear quote.
Who arranges sealant work on the shared parts of a tenement in Craigend?
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 do not. Your title deeds will say who owns the windows.
Do I have to be there?
For indoor joints, yes, someone needs to let us in. After that, you can carry on with your day.
Can I do it myself?
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.
When is the sealant fully cured?
Many sealants skin over quickly but take longer to cure fully. We will give you the cure time for the product we used before we leave.
What information do you need?
A short description and the location, plus pictures if you have them. We will ask anything else we need to know.
Does the work come with a guarantee?
Yes. Every job comes with our 12-month guarantee, and we’re fully insured.
Can you do upstairs windows?
Usually, yes. Access is planned before we start, so mention the height and anything in the way.
Window mastic in Craigend
The new joint doesn’t have to be white. We can seal in white, brown, anthracite grey, black or clear, so the line suits the frame instead of standing out. We are often asked to deal with leaking joints at the ends of sills and gaps between the frame and the inside reveal, across aluminium frames, uPVC windows and composite doors.
Craigend is in one of Scotland’s four big cities, where many older buildings are sandstone or granite. Natural stone around older windows needs a sealant that will not mark or attack it, which normally means a neutral-cure product or a traditional sand mastic rather than an acetoxy silicone.
Big or small, you get the same 12-month guarantee.
- Place
- Craigend (G33)
- Region
- Glasgow
- Guarantee
- 12 months on all our work
- Price
- A clear quote up front
- info@mrmastic.co.uk
- Updated
- 26 October 2026
Nearby places to Craigend
Other services in Craigend
Keeping the joints in good condition
So the new joints stay in good condition:
- Look round the frames every year or so
- Wipe condensation off the frames
- Keep drainage slots and sill grooves clear
- Keep jet washers away from the mastic
Timber frames need their paint kept up, because bare, wet timber moves more and pulls at the joint. Paint up to the joint, not over the silicone.
Look out for the warning signs: cracks in the mastic, gaps you can see light through, damp on the reveal or mould around the inside of the frame. Any of these is worth a call.
Why deal with it now?
A cracked joint around a frame lets rain into the wall. Left long enough, it can stain inside walls, spoil plaster and rot wooden frames. Resealing now is a small job by comparison. Scottish rain finds any gap around a frame or wall joint, and in a tall building in Craigend, damp can travel a long way before it shows.
Combining jobs into one visit is usually more efficient than separate visits, so it’s worth mentioning everything you’d like done. We’ll give you a clear quote for the lot.
Why book with us
- Anti-fungal silicone where joints get wet
- 4.9 on Google from 180+ five-star reviews
- Homes, businesses and hotels
- 12-month guarantee on every job
Read what affects the cost or customer reviews.
How we quote for window mastic
Every job gets its own quote. These are the things that affect it:
- The product the joint needs
- Whether there’s mould to deal with
- Whether old sealant or filler has to be cut out
- Whether the work is at height
No two jobs are quite the same, so each one gets its own quote. Size, access and the product the joint needs all play a part.
What to tell us for a quote
Photos by email are helpful but not essential. Try to tell us:
- What’s wrong with the joints now
- How many joints, rooms or windows are involved
- Where the property is
- A few photos by email, if you can
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’ll talk you through the work and give you a clear quote.
How it works
When we get to you, we check the joints match what you told us. If anything is different, we explain it before carrying on. After that, the work takes a few hours for a handful of frames, longer for a whole house. In a city area like Craigend, parking may be by permit or pay-and-display, so tell us what’s nearby. For flats, mention the door entry system and any shared-stair arrangements.
- First we look at every frame and agree the list.
- The old mastic is cut out and the surfaces cleaned back.
- Where gaps are deep, backing rod goes in first.
- We apply a weatherproof sealant to match the frame and tool it neatly.
- Finally we tidy up and check each joint.
Getting ready for the visit
- For indoor joints, keep the area dry beforehand if you can
- Let us know about stairs, lifts or work at height
- Tell us about any water getting in
How to get a quote
Need a quote? Please send an email to info@mrmastic.co.uk and tell us about the job. You will know what we plan to do, and what it will cost, before any work begins.
Read more
DIY versus a professional finish
Not every job suits DIY: high-level joints, fire-rated gaps, external movement joints and big jobs need the right product, the right access and the right method.
If you’re set on DIY, put the effort into preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it fails, we can still redo it.
When to call us in Craigend
Sun, frost and rain wear sealant out. Sunlight dries the surface out, until it loses its stretch and starts to crack.
The most common problems we see are:
- White mastic on grey or black frames
- Gaps where the sill meets the wall
- Gaps between the frame and the inside reveal
- Black, perished sealant on frames
Historic houses such as Provand's Lordship, about 3.1 miles west, show how far back building around Craigend goes, and older homes nearby need a sealant that suits their walls.
Comparing quotes
- What the cure time is
- What insurance they hold
- What product goes in the joint
- Who turns up on the day
What window mastic looks like in Craigend
The west of Scotland is wetter than the east, which means the mastic around window and door frames has to cope with a lot of rain. Historic houses like Provand's Lordship (about 3.1 miles west) are a reminder that the area around Craigend has older buildings as well as new. Where a home is older, older frames set in brick or stone need a sealant that suits them, and sometimes that is traditional sand mastic.
Managing a site like St Andrew's Secondary School? Then the mastic around its windows and doors needs looking after like any other building’s. If you let a flat or house near Robroyston station, cracked frame mastic tends to show up as a draught or damp complaint, so it’s worth checking between lets.
Craigend is about 3 miles south-east of Bishopbriggs, in Glasgow. Jobs in Craigend get the same care as everywhere else we work: the old material taken out, joints prepared properly and a 12-month guarantee. Craigend is one of 183 towns and villages in Glasgow we cover for window mastic.
Our applicators cover all of G33 for window mastic. Whether your property is on Binns Road, Stepps Road and Gartloch Road or anywhere close by, we can help. If you are just outside Craigend, we cover Ruchazie (1 mile south-west), Garthamlock (1 mile east), Hogganfield (1 mile north-west), Cranhill (1 mile south-west) and Millerston (1 mile north). Further out, we also cover Glasgow (5 miles west), Hillhead (5 miles west), Dowanhill (6 miles west), Woodlands (5 miles west), Woodside (4 miles west) and North Kelvinside (5 miles west).
Around Craigend
We work in homes and buildings around Eastbank Academy, among other places. For rail, the closest station is Robroyston station, roughly 1 mile north-west. Well-known places in the area include Lightburn Hospital (1 mile south) and Glasgow Fort (0.9 miles east). Open spaces near Craigend include Lenzie Moss and Hogganfield Loch.
What sealant work cannot fix
We’ll always be straight with you, so here’s what new sealant will not do:
- A sash or casement that will not close properly
- A failed sealed unit that has misted up
- Penetrating damp from a failed cavity tray or render
If in doubt, email us at info@mrmastic.co.uk and we’ll say what we think.
Joints and surfaces we work on
- Patio & French doors
- uPVC windows
- Window sills
- Timber windows & doors
- Aluminium frames
- Composite doors