South Lanarkshire · Scotland
Auchengray Sand Mastic
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for homes and businesses in Auchengray and across South Lanarkshire. Fully insured, ARBOMaster approved and guaranteed for a year.
- Old cement repairs round a window that have failed
- Draughts and rain around sash boxes
- Gaps round a timber door in stone or brick
Sand mastic in Auchengray, done properly
Sand mastic is the traditional way to point the gap between a timber window frame and the stone or brick around it. It’s a mix of sand and a linseed-oil-based binder and built up by hand. On period homes, it looks right where silicone wouldn’t. Common call-outs are for gaps round a timber door in stone or brick and silicone on a period window that looks wrong, across brick reveals, stone surrounds and sash and case windows.
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 our work comes with our one-year guarantee, wherever you are in South Lanarkshire.
- Where
- Auchengray (ML11)
- Wider area
- South Lanarkshire
- Guarantee
- 12 months on all our work
- Price
- Quoted before any work starts
- info@mrmastic.co.uk
- Last updated
- 26 October 2026
What happens if it’s left?
Before painting the windows, it pays to renew the mastic. Paint over cracked mastic will not stop the gaps and traditional guidance is to leave the new mastic unpainted. Exposed walls in smaller Scottish places take a lot of wind and rain, and damp in stone or harled walls takes a long time to dry once water gets behind a joint.
Combining jobs into one visit generally makes better use of the time than several visits, so it’s worth mentioning everything you’d like done. You will get one clear quote for the whole job.
What you get with us
- Trusted Arbo and Everbuild sealants
- 4.9 on Google from 180+ five-star reviews
- Sanitary silicone with an anti-fungal additive in wet areas
- Experience in homes, commercial sites and hotels
Read what affects the cost or what customers say.
Windows and doors in Auchengray
Private landlords in Scotland must meet the Repairing Standard, which includes keeping a home wind and watertight, and failed outside joints work against that. Many older homes in Scotland have sash and case windows, and the joint between the box frame and the stone or render is traditionally pointed with sand mastic.
For an older house near a landmark such as Auchengray Church, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
Auchengray is about 9 miles south of Bathgate, in South Lanarkshire. Homes, rented property, offices and hotels in Auchengray can book us for sand mastic, old or new, large or small. Every job comes with our one-year guarantee. Across South Lanarkshire, we cover 139 places, and Auchengray is one of them. We also work in Edinburgh, around 20 miles away.
Every address in ML11 is covered for sand mastic. We also cover Haywood (2 miles west), Tarbrax (2 miles east), Wilsontown (3 miles west), Braehead (3 miles south-west) and Forth (3 miles west). Further out, we also cover Larkhall (14 miles west), Carluke (9 miles west), Lanark (9 miles south-west), Lesmahagow (14 miles south-west), Law (11 miles west) and Biggar (10 miles south).
Local landmarks in Auchengray
Around Auchengray, our work takes us to homes and buildings near The Auchengray Inn. The nearest railway station is Breich station, about 4.7 miles north-west of the centre. A little further out are Couthally Castle (4 miles south). Not far away are Lingy Knowe.
What else we do in Auchengray
Work for landlords, hotels and businesses
Whether it’s one flat or a portfolio, the work is the same standard: the old material taken out, careful preparation and a 12-month guarantee.
We regularly work with letting and managing agents. Tell us the address, the job and how access works and we’ll quote.
What sealant work cannot fix
To be straight with you, there are a few things sealant won’t fix:
- Whether work needs listed building consent
- Crumbling stone or brickwork round the window
- Putty and glazing repairs
If in doubt, drop us a line at info@mrmastic.co.uk and we will say what we think.
Joints and surfaces we work on
- Timber door frames
- Tenement windows
- Brick reveals
- Period & listed homes
- Sash and case windows
- Stone surrounds
Auchengray: your questions answered
Can you help a landlord with a rental near Breich station?
Yes, we work for letting agents and landlords. 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.
Will you come out to Auchengray?
Yes. Auchengray is within the area we cover, which takes in towns, villages and rural addresses. We work across all of Scotland. Just mention lanes, gates or anything else about the route when you book.
Can you work on commercial sites?
Yes. Hotels, offices and other businesses use us.
Can I paint the new mastic?
It’s traditionally left unpainted, as guidance on traditional windows advises. Ask us before decorating.
What does sand mastic cost?
We do not publish prices, because the cost depends on the job: how much there is, what’s there now, how we reach it and what it needs. You’ll get a clear quote before work begins.
Do I need permission for sand mastic on a listed building?
It’s best to ask your local planning authority first. Like-for-like sand mastic is often the preferred finish, but they decide.
Do you take out the old sealant first?
Yes, every time. New sealant will not bond properly to old, so the joint is cleaned back first.
How long does sand mastic take to harden?
Not right away. The skin forms first, and the full set comes later and we will give you an idea for your job.
How the job changes by surface
Stone surrounds
Stone openings are rarely perfectly straight, so the joint varies in width. We shape it by hand to follow the stone.
Sash and case windows
Most of our sand mastic work is on sash windows. We renew the mastic round each box.
What we do, step by step
Every visit runs the same way: we look at the joints together, mask and protect the surrounding surfaces, do the work and tidy away. Most jobs take a few hours per window, depending on the condition of the joints. Outside jobs in Auchengray 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.
- We check each window surround and the condition of the joint.
- The joint is raked out and cleaned.
- Large voids are packed out.
- New sand mastic is applied and shaped by hand.
- The finish is dressed neatly.
Preparing for the visit
- Let us know if you’ve seen damp or leaks
- Where the joints are inside, avoid wetting them before we arrive
- Mention any tricky access
Ask for a quote
Call for a quick quote, or send an email if you’d rather. Describe what needs sealing and we will explain what’s involved.
Advice
Do you need sand mastic in Auchengray?
Previous repairs in cement or silicone often trap water or crack away. They do not suit the joint, and they normally need raking out.
People generally contact us after spotting one of these:
- Old sand mastic that has cracked, crumbled or fallen out
- Window mastic to renew ahead of painting
- Open joints round the window box
- Draughts and rain around sash boxes
Rented homes near Breich station change hands often, and any sash windows need sound mastic to keep draughts and rain out.
Comparing quotes
- Whether you can choose the colour
- Is the old sealant removed completely?
- How the surfaces are prepared before sealing
- How much experience the applicator has
Aftercare tips
After the cure time, these simple habits help:
- Leave the new mastic unpainted
- Ask the planning authority about consent for listed or conservation-area homes
- Take care around the mastic when scraping paint
- Make sure water runs off the sill
Avoid sealing over the mastic with silicone. If you see a crack, ask us to take a look rather than patching it.
Small cracks are a sign the mastic is ageing. It’s easier to renew it before it drops out.