North Lanarkshire · Scotland
Sand mastic for sash & case windows in Netherton, North Lanarkshire
We cover Netherton for traditional burnt sand mastic around sash and case windows and doors in stone and brick. Old sealant removed completely, joints prepared properly.
- Weathered mastic on the most exposed windows
- Silicone on a period window that looks wrong
- Old cement repairs round a window that have failed
How to look after the new joints
Looking after new joints is easy:
- Ask us before painting near the mastic
- Ask the planning authority about consent for listed or conservation-area homes
- Ask a joiner to look at soft timber first
- Keep sills and gutters clear so water drains away
Don’t touch or press the mastic while it hardens. It skins over quickly but needs longer to fully harden.
It’s best to renew mastic before painting the windows. Painting over failed mastic hides the problem for a while.
About our sand mastic in Netherton
Silicone on a period window often looks wrong and is not always the right material. Sand mastic is the traditional choice and we can swap the silicone for it. We work on tenement windows, timber door frames and brick reveals, and people most often call us about weathered mastic on the most exposed windows and mastic that needs renewing before redecorating.
Mastic can only go onto a dry joint, so outside work in Netherton depends on the weather, and longer journeys are planned in advance. Tell us about access to all the windows and doors, upstairs included.
We guarantee the work for a year. If there’s a problem with our work within the year, let us know and we’ll sort it.
- Location
- Netherton (ML2, ML1)
- Wider area
- North Lanarkshire
- Cover
- 12 months on all our work
- Price
- A clear price before work begins
- info@mrmastic.co.uk
- Page updated
- 26 October 2026
What affects the cost of sand mastic
Jobs vary more than people expect. What affects the quote:
- Whether the work is at height
- The number and length of the joints
- Working hours on commercial sites
- The old material and how stubborn it is
No two jobs are quite the same, so we quote each one individually. Size, access and the product the joint needs 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:
- Roughly how big the job is
- Where the job is, and your postcode
- Whether it’s a home or a business
- Pictures of the joints, sent by email
It all starts with a short chat. Tell us what’s wrong, where it is and how much there is. Whenever you’re ready, send an email to info@mrmastic.co.uk.
DIY sealant or a professional job?
Too much sealant is as bad as too little. A heavy bead looks messy and copes badly with movement, and getting the depth right matters as much as the look.
What a professional job adds is preparation and the right product. Joints are cleaned back to sound surfaces and dried, and the sealant is matched to the joint and its conditions, then guaranteed for a year.
More services for Netherton
When something else is needed
A few problems are outside what sealant work can do:
- Sash cords, weights and draught-proofing of the sashes
- Cracked or broken glass
- Planning or listed building consent (your local planning authority decides)
If you are not sure, just drop us a line at info@mrmastic.co.uk and we will give you a straight answer.
What we seal
- Brick reveals
- Sash and case windows
- Period & listed homes
- Tenement windows
- Stone surrounds
- Timber door frames
What happens if it’s left?
New sash windows are a major, costly change and on a listed home, consent may be needed. If the frames are sound, renewing the mastic deals with gaps and draughts at the surround. 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.
The cost reflects the work involved, not guesswork. That is why we ask about the job first.
Why Netherton customers choose us
- Over 20 years’ experience
- Full insurance on every job
- 12-month guarantee on every job
- Experience in homes, commercial sites and hotels
See what affects the cost and our reviews.
Common questions in Netherton
Can you do sand mastic in Netherton?
Yes. Our work covers the whole of Scotland, and Netherton is part of that. Just email us at info@mrmastic.co.uk with a few details of the job.
Do you cover smaller places like Netherton?
Yes. Netherton is within the area we cover, which takes in towns, villages and rural addresses. We work across all of Scotland. Let us know about access, parking and anything unusual about getting there when you book.
Can you match the sealant colour?
Yes. Sealants come in white, clear, grey and other colours for many products, and we agree the colour with you before we start.
Will it make a mess?
No. We work neatly, protect the area around the joints and tidy up afterwards.
Where is Mr Mastic based?
Our base is in Crawley, and we work across South East England, London and Scotland.
Are you insured?
Yes, we’re fully insured for domestic and commercial work.
Should I use sand mastic or silicone?
It depends on the window. On many period windows, sand mastic looks right and suits the building, while modern frames normally get a flexible sealant.
Can old silicone round a sash window be swapped for sand mastic?
Yes, we do this often. All the old silicone is removed first so the mastic can sit properly.
How the visit works
Once we are on site, we compare the joints with what we discussed. If we find something unexpected, we talk it through with you first. After that, the work takes anything from a few hours to a full day, depending on how many windows. Outside jobs in Netherton need a dry day, because sealant won’t 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 start by checking each surround and agreeing the joints to renew.
- Old, loose mastic is raked out and the joint cleaned.
- We pack any deep gaps so the mastic sits at the right depth.
- The mastic is mixed, pressed into the joint by hand and shaped.
- We dress the surface so it sits neatly against the masonry.
Preparing for the visit
- Keep pets and children clear of the area while we work
- Let us know about stairs, lifts or work at height
- Let us know about earlier repairs to the joints
Getting a quote
A good description makes for an accurate quote. Tell us where the job is, what’s wrong and how much there is.
Related advice
Different surfaces, different methods
Timber door frames
Period doors in stone or brick openings are often pointed with sand mastic. We renew it the same way as on windows.
Brick reveals
An open joint at a brick reveal lets weather in. Renewing the mastic closes it.
Sand mastic in Netherton: local notes
Sash and case windows are common in older Scottish homes, and the joint between the box frame and the stone or render is traditionally pointed with sand mastic. Historic houses like Cambusnethan House (about 0.9 miles south) are a reminder that the area around Netherton has older buildings as well as new. Where a home is older, older frames set in brick or stone need a sealant that suits them, and sometimes that’s traditional sand mastic.
For site and facilities teams at buildings such as Our Lady's High School, larger buildings have plenty of frames, and the mastic around each one ages. Rented homes near Shieldmuir station change hands often, and older sash windows in a rental need their mastic kept sound to keep the weather out. If you live in an older home near St Patrick's R.C. Church, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
Netherton is about 1 mile south-west of Wishaw, in North Lanarkshire. Anywhere in ML2, our applicators can take on sand mastic. Netherton is one of 89 places in North Lanarkshire we cover. For nearby work, see our Glasgow page (14 miles or so).
Postcode districts we cover here for sand mastic: ML2 and ML1. Sand mastic is available to properties on Canyon Road, Liath Avenue and Glasgow Road. We also cover Muirhouse (1 mile north-west), Pather (1 mile east), Gowkthrapple (1 mile south-east), Wishaw (1 mile north-east) and Dimsdale (1 mile east). Further out, we also cover Cumbernauld (13 miles north), Coatbridge (7 miles north-west), Airdrie (7 miles north), Bellshill (4 miles north-west), Kilsyth (15 miles north) and Burnfoot (7 miles north).
Near you in Netherton
The closest station to Netherton is Shieldmuir station, about 0.7 miles north-west. Nearby you will also find North Lanarkshire Heritage Centre (2.4 miles north-west) and Brandon Shopping Centre (2.2 miles north-west). For a walk, there’s Baron's Haugh RSPB Reserve and Strathclyde Loch.