North Lanarkshire · Scotland
Sand Mastic in Overtown
Sand mastic across Overtown and nearby, with every bit of old sealant taken out first and a 12-month guarantee.
- Gaps between timber frames and stone or brick
- Old sand mastic that has cracked, crumbled or fallen out
- Mastic round period door frames that has failed
DIY sealant or a professional job?
Some jobs are best left to a professional: work at height, external movement joints, fire-rated sealant and large areas call for the right materials, safe access and experience.
The biggest DIY mistake is sealing over old sealant. New silicone won’t bond to old, so it peels away and traps moisture behind it. All the old material has to come out first.
Sand mastic for homes and businesses in Overtown
Silicone on a period window often looks wrong and doesn’t suit the building. Sand mastic is the traditional choice, and we can replace one with the other. If you’re dealing with gaps where the frame meets the masonry and silicone on a period window that looks wrong, we can help, whatever the surface.
Across smaller places in Scotland, homes range from stone and harled cottages to newer houses, many standing in the open. Wind-driven rain finds any gap around a frame or sill.
A one-year guarantee comes as standard, so you’re not left on your own once the job is done.
- Location
- Overtown (ML2)
- Wider area
- North Lanarkshire
- Guarantee
- A year, on every job
- Quotes
- A clear quote up front
- info@mrmastic.co.uk
- Page updated
- 26 October 2026
What else we do in Overtown
Windows and doors in Overtown
With historic houses such as Cambusnethan House (about 1.4 miles west) nearby, there’s older building stock in the area around Overtown as well as newer homes. In older buildings, older frames set in brick or stone need a sealant that suits them, and sometimes that is traditional sand mastic. Under the Repairing Standard, private landlords in Scotland have to keep homes wind and watertight, and failed outside joints work against that.
For an older house near a landmark such as Overtown Parish Church, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall. Letting a property close to Wishaw station? Then cracked sand mastic around sash windows lets in the draughts tenants complain about.
Overtown is about 2 miles south of Wishaw, in North Lanarkshire. If you need sand mastic in Overtown, it’s easy to get a quote: please drop us a line at info@mrmastic.co.uk. We are based in Crawley and cover North Lanarkshire. Across North Lanarkshire, we cover 89 places, Overtown among them. For nearby work, see our Glasgow page (16 miles or so).
All of ML2 is covered for sand mastic. Streets in the area include Main Street, Rhu Quadrant and Kershaw Street, and we cover them all. With the A71 close by, Overtown is easy for our applicators to reach for sand mastic. We also cover the places around Overtown: Waterloo (1 mile south), Dimsdale (1 mile north), Gowkthrapple (1 mile north-west), Pather (1 mile north-west) and Dalserf (1 mile south). Further out, we also cover Motherwell (4 miles north-west), Cumbernauld (14 miles north), Coatbridge (8 miles north-west), Airdrie (8 miles north), Bellshill (6 miles north-west) and Burnfoot (9 miles north).
Local landmarks in Overtown
For rail, the closest station is Wishaw station, about 1.3 miles north-west of the centre. A little further out are University Hospital Wishaw (1.8 miles north-west) and Mauldslie Castle (1.7 miles south). Green spaces nearby include Allanton House lake and Baron's Haugh RSPB Reserve.
When it is not the sealant
Some problems need a builder, plumber or other trade rather than us:
- Masonry that needs repairing
- Broken panes
- Rotten sashes, sills or window boxes (a joiner’s job)
If in doubt, send an email to info@mrmastic.co.uk and we’ll say what we think before you book.
Surfaces we seal
- Sash and case windows
- Stone surrounds
- Brick reveals
- Period & listed homes
- Tenement windows
- Timber door frames
How to look after the new joints
To keep the joints looking good and working properly:
- Ask us before painting near the mastic
- Make sure water runs off the sill
- Go gently near the mastic when preparing windows
- Check with your local planning authority if your home is listed
Keep paint scrapers and sanders off the mastic when redecorating. It can be damaged by heavy scraping.
Sound mastic protects the frame. Once it fails, water can sit against the timber, which can lead to rot.
The process
At the end, we look at the finished work together. The work normally takes a few hours for a single window, longer for several, depending on how much there is to do. Somewhere like Overtown may be a longer drive, and the journey is planned ahead. Mention tracks, gates, ferries or anything else about the route.
- We look at the surrounds with you and agree the joints to renew.
- Old mastic and any loose material are raked out.
- Deep gaps are packed so the mastic sits at the right depth.
- The sand mastic is mixed and pressed into the joint by hand.
- The surface is finished to suit the stone or brick.
Getting ready for the visit
- For business premises, tell us about site rules or sign-in
- Where the joints are inside, avoid wetting them before we arrive
- Plan for the work area to be out of bounds to pets and children
Getting a quote
Call for a quick quote, or send an email if you’d rather. Tell us about the joints that need doing and we’ll talk you through the work.
Related advice
What the job involves on each surface
Stone surrounds
Old stone surrounds are often uneven, so the joint varies in width. We shape it by hand to follow the stone.
Timber door frames
Doors face weather and wear and the mastic can crack early. We rake it out and renew it.
Landlord and commercial work in Overtown
From a single let to a portfolio, the work is the same standard: old sealant fully removed, joints prepared properly and a one-year guarantee.
Water getting past a failed joint can damage the building, which matters even more when someone else lives there. Keeping joints in good order is simple maintenance.
FAQs for Overtown
I let a flat near Wishaw station. Can you help?
Yes, we work for letting agents and landlords. Just email us at info@mrmastic.co.uk and tell us about the property, and we’ll send you a clear quote.
Can you do sand mastic in Overtown?
Yes. We work across all of Scotland, and Overtown is part of that. You can email us at info@mrmastic.co.uk and let us know what needs doing.
When will the new mastic be hard?
It takes a while. The skin forms first, and the full set comes later, and we will tell you what to expect.
What information do you need?
Just the basics: where it is, what you’ve noticed and how we reach it. Then email us at info@mrmastic.co.uk.
Do you have insurance?
Yes. We’re fully insured.
Is it worth trying it myself?
Sometimes. Preparation is everything: all the old sealant out, and a clean, dry joint. If it doesn’t work out, we can redo it.
Can sand mastic be painted?
It’s traditionally left unpainted, which is what traditional guidance recommends. Ask us before decorating.
Will it make a mess?
No. We protect the surfaces around the joints, and we clear up the old sealant and our materials before we leave.
What we’re called out for in Overtown
Previous repairs in cement or silicone often trap water or crack away. They don’t suit the joint, and they normally need raking out.
These are the problems we are asked about most:
- Cracked mastic round a front door frame
- Modern sealant on a period surround
- Mastic worn away on windows facing the weather
- Old sand mastic that has cracked, crumbled or fallen out
If you look after a building such as St Aidan's High School, larger buildings have plenty of frames, and the mastic around each one ages.
What to look for in a quote
- How long the guarantee is
- How the surfaces are prepared before sealing
- What happens if the job turns out different
- Whether they’re fully insured