North Lanarkshire · Scotland
Sand Mastic in Smithstone
Professional sand mastic in and around Smithstone, with every bit of old sealant taken out first.
- Gaps where the frame meets the masonry
- Old cement repairs round a window that have failed
- Failed mastic on an exposed elevation
Keeping the joints in good condition
No joint lasts for ever, but care makes a real difference. A few tips:
- Check the mastic when you check the paintwork
- Find out about consent before window work on a listed home
- Keep sills and gutters clear so water drains away
- Have rotten timber repaired before new mastic goes in
Leave the new mastic unpainted, which is the traditional advice. If you’re redecorating, ask us first.
Small cracks are a sign the mastic is ageing. It’s easier to renew it before it drops out.
About our sand mastic in Smithstone
Traditional burnt sand mastic that sits naturally against stone and brick. It’s a good fit for period properties, where modern sealant can look out of place. If you are dealing with cracked mastic round a front door frame and mastic that needs renewing before redecorating, we can help.
Outdoor sealant needs a dry surface, so window work around Smithstone is planned around the weather, and longer journeys are planned in advance. Let us know about access to every frame, including any upstairs.
The work is covered for a year after we finish. If anything is not right with it, send an email to info@mrmastic.co.uk.
- Location
- Smithstone (G68, G65)
- Region
- North Lanarkshire
- Cover
- A year, on every job
- Quote
- A clear quote up front
- info@mrmastic.co.uk
- Page updated
- 26 October 2026
Signs you need sand mastic in Smithstone
Scraping and sanding before painting can loosen old mastic. It’s often found when windows are being prepared for paint, which is a good time to renew it.
The most common problems we see are:
- Mastic dropping out of the joint
- Tired mastic found when preparing windows for paint
- Open joints round the window box
- Silicone on a period window that looks wrong
If you look after a building such as Our Lady's High, the mastic around its windows and doors needs looking after like any other building’s.
What your quote should include
- How the colour is chosen
- What product goes in the joint
- How long to leave it before use
- What happens if they find a problem under the old sealant
What happens if it’s left?
New mastic over crumbling mastic won’t hold. We remove the loose material first so the new work lasts. Exposed walls in smaller Scottish places take a lot of wind and rain, and once water gets behind a failed joint, damp in stone or harled walls is slow to dry out.
Doing several joints on one visit generally makes better use of the time than several visits, so it’s worth mentioning everything you’d like done. You’ll get one clear quote for the whole job.
What you get with us
- Homes, businesses and hotels
- We’re fully insured
- Anti-fungal sanitary silicone in wet areas
- Any old sealant cut out fully, not covered over
What we can’t put right
Some problems need a builder, plumber or other trade rather than us:
- Planning or listed building consent (your local planning authority decides)
- Rotten sashes, sills or window boxes (a joiner’s job)
- Damaged stone surrounds
If you are not sure, just send an email to info@mrmastic.co.uk and we will give you a straight answer before booking.
Surfaces we seal
- Period & listed homes
- Brick reveals
- Timber door frames
- Sash and case windows
- Tenement windows
- Stone surrounds
Places near Smithstone
Also in Smithstone
How it works
At the end, we look at the finished work together and explain the cure time. The work normally takes a few hours per window, depending on the condition of the joints, depending on the amount of work. Outside jobs in Smithstone need a dry day, because sealant will not bond to a wet joint, so external jobs may need to move if the day turns wet. Indoor work goes ahead whatever the weather.
- First we agree which joints need doing.
- We remove the old, loose mastic.
- Deep gaps are packed so the mastic sits at the right depth.
- We apply the mastic by hand and shape it.
- We dress the finish so it sits neatly against the masonry.
How to prepare
- Keep children and pets away from the work area
- Let us know if you’ve seen damp or leaks
- On commercial sites, let us know about site rules
Ask for a quote
We quote each job on its own. Just send an email to info@mrmastic.co.uk with the details and send photos if you have them.
Read more
Windows and doors in Smithstone
Smithstone is in the west of Scotland, which is wetter than the east, which means the mastic around older windows and doors has to cope with a lot of rain. Under the Repairing Standard, private landlords in Scotland have to keep homes wind and watertight, and sound outside sealant is part of that.
Letting a property close to Croy station? Then any sash windows need sound mastic to keep draughts and rain out.
Smithstone is about 1 mile west of Cumbernauld, in North Lanarkshire. Homes, rented property, offices and hotels in Smithstone can book us for sand mastic, old or new, large or small. Every job comes with our one-year guarantee. Our area takes in 89 places across North Lanarkshire. We also work in Glasgow, around 11 miles away.
We work across G68 and G65 for sand mastic. Sand mastic is available to properties on Taggart Road, Blackwood Road and Old Tower Road and the roads around them. Close by, we work in Balloch (1 mile east), Croy (1 mile north), Craigmarloch (1 mile north-east), Auchinstarry (1 mile north-west) and Westfield (1 mile south). We also work in nearby towns such as Motherwell (11 miles south), Coatbridge (7 miles south), Airdrie (6 miles south), Wishaw (13 miles south), Bellshill (9 miles south) and Burnfoot (6 miles south).
Near you in Smithstone
There’s a railway station in Smithstone itself: Croy station. Other landmarks nearby include Antonine Centre (1.8 miles east) and Cumbernauld Castle (2.7 miles east). Green spaces nearby include Bar Hill and Antermony Loch.
DIY versus a professional finish
What a professional job adds is preparation and the right product. We take joints back to clean, dry surfaces, and the sealant is matched to the joint and its conditions, then guaranteed for a year.
Some sealant jobs are within reach of a careful DIYer, such as a straightforward joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
Your questions about sand mastic in Smithstone
I let a flat near Croy station. Can you help?
Yes, we work for landlords and agents. Just send an email to info@mrmastic.co.uk and tell us about the property, and we’ll send you a clear quote.
Do you cover Smithstone for sand mastic?
Yes, Smithstone is within the area we cover. We work across all of Scotland. You can drop us a line at info@mrmastic.co.uk and let us know what needs doing, and we’ll give you a clear price.
Can old silicone round a sash window be swapped for sand mastic?
Yes, it’s a common request. All the old silicone is removed first so the mastic beds in well.
What is sand mastic?
Sand mastic is a traditional material for pointing round windows and doors. It combines sand with a linseed-oil-based binder.
Do I need permission for sand mastic on a listed building?
Speak to your local planning authority before work starts. Sand mastic is often favoured as like for like but the decision is theirs.
Do I have to be there?
We need access to the joints, so we’ll agree that with you when we book. For inside work, that normally means someone being in.
What should I tell you?
Where the job is, what the problem is and roughly how big it is. Photos by email help too.
Are you ARBOMaster approved?
Yes. We hold ARBOMaster approved applicator status and we’re fully insured too.
How we quote for sand mastic
For a quick quote, just ask. The main things that affect it are:
- How much old sealant there is and how hard it is to remove
- Whether the work is at height
- How many areas need sealing
- When we can work, for business premises
Homes and businesses are quoted the same way: the amount of work, how we reach it and what it needs, along with when we can work on site. Call for a quick quote and we’ll explain what it covers.
Asking for a quote
What to tell us when you ask for a quote:
- Access, such as stairs, a lift or height
- Whether it’s a home or a business
- The problem you’ve noticed
- Where the job is, and your postcode
There’s no standard price list. Instead, your job gets its own clear quote. To arrange one, drop us a line at info@mrmastic.co.uk.