South Lanarkshire · Scotland
Sand Mastic in Cleghorn
Professional sand mastic in and around Cleghorn, with old sealant always removed completely.
- Patchy fillers round a sash window
- Tired mastic found when preparing windows for paint
- Gaps where the frame meets the masonry
Sand mastic for homes and businesses in Cleghorn
Sand mastic does not last for ever, leaving gaps round the window. Renewing it closes the gap and tidies the surround. We work on tenement windows, brick reveals and timber door frames, and people most often call us about silicone on a period window that looks wrong and failed mastic on an exposed elevation.
Older stone-built homes in Scotland often have sash and case or timber windows set in stone. Those suit a traditional sand mastic or a neutral-cure sealant, not an acetoxy silicone that can attack some stone.
All of our work is guaranteed for twelve months.
- Location
- Cleghorn (ML11)
- Wider area
- South Lanarkshire
- Cover
- One year on every job
- Quote
- Quoted before any work starts
- info@mrmastic.co.uk
- Last updated
- 26 October 2026
Frames and glazing around Cleghorn
Sash and case windows are common in older Scottish homes, often pointed into the wall with traditional sand mastic. Private landlords in Scotland must meet the Repairing Standard, which includes keeping a home wind and watertight, and failed outside joints work against that.
For site and facilities teams at buildings such as Lanark Grammar School, larger buildings have plenty of frames, and the mastic around each one ages.
Cleghorn is about 5 miles south-east of Carluke, in South Lanarkshire. Wherever you are in the ML11 postcode area, our applicators can take on sand mastic. Cleghorn is one of 139 places in South Lanarkshire where we work for sand mastic. We also work in Glasgow, around 24 miles away.
Our applicators cover all of ML11 for sand mastic. If you need sand mastic at a property on Hagholm Road, Roman Court and Jerviswood Drive or a nearby road, our applicators can take on the job. Neighbouring places we cover for sand mastic include Ravenstruther (1 mile east), Lanark (2 miles south-west), Carstairs (2 miles east), New Lanark (2 miles south-west) and Kilncadzow (3 miles north-west). Larger places within reach include Hamilton (14 miles north-west), Larkhall (10 miles west), Carluke (5 miles north-west), Strathaven (13 miles west), Bothwell (15 miles north-west) and Burnbank (15 miles north-west).
Around Cleghorn
The nearest railway station is Lanark station, roughly 1.7 miles south-west. Other landmarks nearby include William Smellie Memorial Hospital (2.2 miles west) and Carstairs Castle (2 miles east). Open spaces near Cleghorn include Black Hill and Lanark Loch.
DIY sealant or a professional job?
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.
Sealing over old silicone is the commonest DIY error. New silicone will not bond to old, so it lifts and traps water and mould underneath. All the old material has to come out first.
How we quote for sand mastic
You’ll get a clear quote before work begins. It’s based on:
- Access and height
- When we can work, for business premises
- The amount of work
- How many areas need sealing
The cost depends on the amount of work, how much old material has to come out and how easy the joints are to reach. You will have a clear quote before any work starts.
What to tell us for a quote
Before you ask for a quote, have a think about:
- Whether it has been sealed before
- A few photos by email, if you can
- Access, such as stairs, a lift or height
- The problem you’ve noticed
Quotes start with a quick conversation. Describe the problem, the location and the size of the job, and we will explain how we’d tackle it. Whenever you are ready, drop us a line at info@mrmastic.co.uk.
What we are called out for in Cleghorn
Over the years, sand mastic weathers. It hardens, cracks and starts to come away from the frame or the masonry.
Any of these means the joints need attention:
- Crumbling sand mastic round a window
- Gaps between timber frames and stone or brick
- Gaps round a timber door in stone or brick
- Failed mastic on an exposed elevation
Letting a property close to Lanark station? Then any sash windows need sound mastic to keep draughts and rain out.
Before you book anyone
- Which colour the sealant will be
- How the surfaces are prepared before sealing
- Which sealant they’ll use, and why
- Is the old sealant removed completely?
What the job involves on each surface
Sash and case windows
On a sash window, the mastic joint shows on the outside, so a neat, even finish matters.
Brick reveals
Gaps between frame and brick let in rain and draughts. New mastic seals the gap.
Landlords, agents and businesses in Cleghorn
We also work for businesses, from offices to washrooms and kitchens. For commercial premises, we can talk through working times when we quote.
Failed sealant is one of the commonest items on a check-out report, and it’s quick to put right between tenancies. We can quote for more than one property at once.
What we cannot put right
New sealant can’t fix everything, and we will tell you before we start. Sealant will not put right:
- Decayed frames that need repair
- Cracked or broken glass
- Sashes that rattle, stick or will not open
Not sure which it is? You can send an email to info@mrmastic.co.uk and we’ll tell you honestly.
Surfaces we seal
- Period & listed homes
- Sash and case windows
- Stone surrounds
- Tenement windows
- Brick reveals
- Timber door frames
The process
You do not need to clear the whole room or building, just the space around the work. Everything nearby is protected, and the work takes anything from a few hours to a full day, depending on how many windows for a typical job. Outside jobs in Cleghorn 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.
- Old mastic and any loose material are raked out.
- 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
- Move anything stored near the joints
- Keep children and pets away from the work area
- For indoor joints, keep the area dry beforehand if you can
Get a quote
If you are in Cleghorn and need sand mastic, send an email to info@mrmastic.co.uk. Tell us what the problem is and where, and we will agree the price before any work begins.
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FAQs for Cleghorn
Do you cover smaller places like Cleghorn?
Yes, Cleghorn is covered. We work across all of Scotland, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.
Can you help a landlord with a rental near Lanark station?
Yes, rental work is part of what we do. You can drop us a line at info@mrmastic.co.uk with the address and a few details, and we will give you a fixed price before work begins.
Can sand mastic be painted?
It’s traditionally left unpainted, which is what traditional guidance recommends. Ask us before decorating.
Do you work for hotels and businesses?
Yes. Larger jobs can be planned room by room or area by area.
Can you seal over the old sealant?
No, it will not last. It can look neat for a few weeks, but the new layer lifts away from the old one. The old sealant has to come out completely.
Do you remove the old sealant?
Yes. Sealing over old sealant is the main reason resealing fails early, and it’s something we never do.
How long does sand mastic take to go off?
Not straight away. The skin forms first, and the full set comes later, and we will tell you what to expect.
How much does sand mastic cost in Cleghorn?
Size, access and the old material all affect the cost. Ask us for a quote.