North Lanarkshire · Scotland
Sand mastic for sash & case windows in Wishaw, North Lanarkshire
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for householders, landlords and businesses in Wishaw. Fully insured, ARBOMaster approved and guaranteed for a year.
- Gaps between timber frames and stone or brick
- Mastic round period door frames that has failed
- Window mastic to renew ahead of painting
Sand mastic for homes and businesses in Wishaw
Our applicators renew the sand mastic around sash and case windows and doors set in stone or brick. Out comes the old, loose mastic, and new mastic is applied and shaped by hand. If you have tired mastic found when preparing windows for paint and cement or filler used on old window joints that has cracked, we can help, whatever the surface.
Scottish towns like Wishaw tend to mix older stone-built streets, harled houses and newer estates, and windows range from older sash and case to modern uPVC. Each needs the right sealant against the right wall.
A one-year guarantee comes as standard, so you are covered after we have gone.
- Location
- Wishaw (ML2, ML1)
- Region
- North Lanarkshire
- Guarantee
- 12 months on all our work
- Price
- A clear quote up front
- info@mrmastic.co.uk
- Updated
- 26 October 2026
Can I do it myself?
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.
Not every job suits DIY: work at height, external movement joints, fire-rated sealant and large areas call for the right materials, safe access and experience.
Aftercare tips
Once the sealant has cured, a few habits help it last:
- Don’t run silicone over sand mastic
- Inspect the joints round the windows every year or so
- Have rotten timber repaired before new mastic goes in
- Ask us before painting near the mastic
Leave the new mastic alone while it firms up. It forms a skin fairly soon but needs longer to fully harden.
Sound mastic protects the frame. Failed mastic lets water reach the timber and timber that stays wet can rot.
Why act early in Wishaw
Replacing sash windows is a big decision for a period home, and in listed buildings it may need consent. Where the frames are in good order, new mastic seals the surround. In Wishaw, wind and rain soon get through failed outside joints. Indoors, failed sealant lets water into floors and ceilings.
We don’t show prices on the website, because the cost depends so much on the job itself. For a quick quote, please drop us a line at info@mrmastic.co.uk.
What you get with us
- We are fully insured
- 20+ years of sealant experience
- 180+ five-star Google reviews
- Anti-fungal sanitary silicone in wet areas
Read what affects the cost or our reviews.
Also in Wishaw
What we do, step by step
We keep the work tidy and contained to the joints we are treating, so you can carry on as normal. Expect the work to take a few hours for a single window, longer for several, and we explain the cure time before we leave. For a job in Wishaw, tell us where the work is, how to get in and where to park. Outside work depends on the weather, as sealant needs a dry surface.
- 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.
- The sand mastic is mixed and pressed into the joint by hand.
- We dress the finish so it sits neatly against the masonry.
Before we arrive
- Mention any leaks or damp you’ve noticed
- Tell us about access, such as stairs, a lift or high-level joints
- Mention any sign-in or site rules at work premises
Getting a quote
The more we know about the job, the more useful the quote. Tell us where the job is, what’s wrong and how much there is, and add photos by email if you can.
Read more
Honest limits
A few problems are outside what sealant work can do:
- Decisions on consent for listed homes
- Sashes that need overhauling
- Timber that has rotted
If you are not sure, just send an email to info@mrmastic.co.uk and we’ll give you a straight answer.
Joints and surfaces we work on
- Tenement windows
- Sash and case windows
- Stone surrounds
- Period & listed homes
- Brick reveals
- Timber door frames
What affects the quote in Wishaw
Your quote is based on your job. We take into account:
- The type of sealant required
- The size of the job
- Mould in or behind the old joints
- Whether old sealant or filler has to be cut out
Every job is a little different, so we quote each one individually. The number of joints, how easy they are to reach and the sealant needed all make a difference, and we’ll explain the quote if you ask.
What we need to know
What to tell us when you ask for a quote:
- A few pictures by email, if you can
- If it’s domestic, commercial or a hotel
- Where the property is
- If someone has resealed it before
We quote each job on its own, so the first step is telling us about yours. Just email us at info@mrmastic.co.uk with the details.
Wishaw homes and the weather
Private landlords in Scotland must meet the Repairing Standard, which includes keeping a home wind and watertight, and sound outside sealant is part of that. Many older homes in Scotland have sash and case windows, often pointed into the wall with traditional sand mastic.
Homes close to Old Parish Church include some older properties, and the joint between an old wall and a newer frame is normally the first place rain gets in. Managing a site like St Aidan's High School? Then its window and door frames need their mastic kept sound, just like a home’s. Letting a property close to Wishaw station? Then older sash windows in a rental need their mastic kept sound to keep the weather out.
Wishaw is about 6 miles east of Hamilton, in North Lanarkshire. Wherever you are in the ML2 postcode area, our applicators can take on sand mastic. We cover 89 towns and villages across North Lanarkshire, large and small. There’s also a page for Glasgow, roughly 15 miles from Wishaw.
Here we cover the ML2 and ML1 postcode area for sand mastic. Whether your property is on Main Street, Market Square and Station Road or anywhere close by, our applicators can take on the job. Being close to the A71 and A721, Wishaw is simple for us to get to. We also cover Pather (1 mile south), Dimsdale (1 mile south-east), Coltness (1 mile north), Gowkthrapple (1 mile south) and Netherton (1 mile south-west). Further out, we also cover Motherwell (3 miles north-west), Cumbernauld (12 miles north), Coatbridge (7 miles north-west), Airdrie (7 miles north), Bellshill (5 miles north-west) and Kilsyth (15 miles north). Wishaw is among the bigger towns we cover in North Lanarkshire.
What’s near Wishaw
Typical jobs here are in homes near The Wishaw Malt pub and St. Aidan's Primary School. Wishaw has its own railway station: Wishaw station. A little further out are Murdostoun Castle (2.1 miles north-east) and Brandon Shopping Centre (2.9 miles west). The countryside around Wishaw includes Allanton House lake and Baron's Haugh RSPB Reserve.
Your questions about sand mastic in Wishaw
Is Wishaw in your area for sand mastic?
Yes, Wishaw is within the area we cover. We work across all of Scotland. You can drop us a line at info@mrmastic.co.uk and tell us what needs doing, and we’ll give you a clear price.
Is there a guarantee on sand mastic in Wishaw?
All our work, in Wishaw and everywhere else, comes with a 12-month guarantee. We are fully insured, and an ARBOMaster approved applicator.
What do you need from me for a quote?
A short description and the location, plus photos if you have them. We’ll ask anything else we need to know.
Do you take out the old sealant first?
Yes, always, and completely. New sealant won’t bond properly to old, so the joint is cleaned back first.
Can you replace silicone on a period window with sand mastic?
Generally, yes. With the silicone removed and the joint cleaned, sand mastic is applied by hand.
Do the sealants smell?
It depends on the product. Some products have a noticeable smell, others very little.
Do you work for letting agents?
Yes. We work for householders, landlords, letting agents, businesses and hotels across North Lanarkshire.
Where do you work from?
We’re based in Crawley, West Sussex, and we work across South East England, London and Scotland.
For landlords and businesses
We also work for businesses, from offices to washrooms and kitchens. On commercial sites, working times can be discussed when we quote.
Housing providers, facilities teams and property managers book us too in Wishaw and across North Lanarkshire. We can quote a run of properties together.