Scottish Borders · Scotland
Sand Mastic in Stow
Specialist sand mastic for Stow: the right sealant, proper preparation and a neat finish. Call for a quick quote.
- Open joints round the window box
- Mastic round period door frames that has failed
- Window mastic to renew ahead of painting
Sand mastic in Stow
Across Stow, we renew sand mastic around sash and case windows. Every joint is cleaned out and filled by hand for a neat, traditional finish. If you’re dealing with draughty sash windows at the surround and mastic round period door frames that has failed, we can put it right, 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.
All our work is covered by a 12-month guarantee, wherever you are in the Scottish Borders.
- Location
- Stow (TD1)
- Wider area
- Scottish Borders
- Guarantee
- One year on every job
- Price
- Quoted before any work starts
- info@mrmastic.co.uk
- Updated
- 26 October 2026
Stow: your questions answered
Do you cover smaller places like Stow?
Yes, smaller places are covered as well as towns. Our work covers the whole of Scotland. Just mention lanes, gates or anything else about the route when you book.
Can you help a landlord with a rental near Stow station?
Yes, rental work is part of what we do. Just send an email to info@mrmastic.co.uk and tell us about the property, and we will give you a clear quote.
Are you an approved applicator?
Yes. ARBOMaster is the approved applicator scheme for Arbo sealants, and we are part of it.
Can you match the sealant colour?
Yes. Sealants come in white, clear, grey and other colours for many products, and we’ll agree it with you first.
How long does sand mastic take to harden?
A skin forms quite soon, but full hardening takes longer. We’ll tell you what to expect for your job.
Can new sealant go over the old?
No. Fresh sealant doesn’t stick to old sealant, and it traps any mould or water underneath. It all has to come out first.
How do I get a quote for sand mastic in Stow?
The cost depends on the size of the job, access and how much old sealant has to come out. Call for a quick quote and we’ll talk you through it.
How long does sand mastic take?
Most jobs take anything from a few hours to a full day, depending on how many windows. Your quote will say how long we expect yours to take.
What sealant work can’t fix
A few problems are outside what sealant work can do:
- Sashes that need overhauling
- Putty and glazing repairs
- Decayed frames that need repair
If you’re not sure, just email us at info@mrmastic.co.uk and we’ll give you a straight answer before booking.
What we seal
- Brick reveals
- Period & listed homes
- Tenement windows
- Sash and case windows
- Timber door frames
- Stone surrounds
Towns and villages near Stow
What else we do in Stow
How we quote for sand mastic
Every job gets its own quote. This is what makes a difference:
- Which sealant suits the joint
- Whether there’s mould to deal with
- Working hours on commercial sites
- The old material and how stubborn it is
A failed joint rarely gets cheaper to fix by waiting. If you are unsure, send an email to info@mrmastic.co.uk for an honest opinion and a quote.
What to tell us for a quote
Photos help, but a description is a good start. Try to tell us:
- The rough size of the job
- The type of property
- If someone has resealed it before
- How we’d reach the joints
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, send an email to info@mrmastic.co.uk.
How the visit works
Good joint work is mostly preparation, so that is where we spend the time. Joints are cleaned back and dried before anything new goes in. All told, the work takes a few hours per window, depending on the condition of the joints. Outdoor work around Stow depends on the weather, as sealant needs a dry surface, so an outdoor job can move if the forecast changes. 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 about parking restrictions
- Plan for the work area to be out of bounds to pets and children
- For business premises, tell us about site rules or sign-in
Get a quote
A good description makes for an accurate quote. Tell us where the job is, what’s wrong and how much there is, and email pictures if that is easy.
Advice
What we’re called out for in Stow
Scraping and sanding before painting can loosen old mastic. Many people find it crumbling when they prepare the windows, which is a good time to renew it.
It’s worth asking for a quote if you see:
- Tired mastic found when preparing windows for paint
- Mastic round period door frames that has failed
- Old cement repairs round a window that have failed
- Gaps between timber frames and stone or brick
In the older streets around St Mary's Church, frames set in older brick or stone need a sealant that suits the wall as well as the frame.
What your quote should include
- What the quote includes, VAT included or not
- How long to leave it before use
- Whether the sealant suits the joint
- How the joint is cleaned and prepared
What happens if it’s left?
Gaps round a sash window let in rain and draughts. Left, water can reach the timber and the wall so renewing it early protects the window. Out of town in Scotland, exposed walls take a lot of weather, and damp in stone or harled walls takes a long time to dry once water gets behind a joint.
There are no prices on our 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 and we will talk you through it.
Why book with us
- Old sealant always removed completely
- Domestic, commercial and hotel work
- ARBOMaster approved applicator
- One-year guarantee on every job
See our cost guide and what customers say.
Landlord and commercial work in Stow
Whether it’s one flat or a portfolio, you get the same standard of work: old sealant fully removed, joints prepared properly and a one-year guarantee.
We also work for businesses, from offices to washrooms and kitchens. For commercial premises, we can talk through working times when we quote.
Windows and doors in Stow
Private landlords in Scotland must meet the Repairing Standard, which includes keeping a home wind and watertight, and failed outside joints work against that. Sash and case windows are common in older Scottish homes, often pointed into the wall with traditional sand mastic.
Letting a property close to Stow station? Then any sash windows need sound mastic to keep draughts and rain out.
Stow is about 6 miles north of Galashiels, in the Scottish Borders. Stow gets the same service as everywhere we cover: old sealant removed completely, careful preparation and a 12-month guarantee. 89 places in the Scottish Borders are on our list, from the larger towns to small villages. We also work in Edinburgh, around 22 miles away.
We cover every part of the TD1 postcode area for sand mastic and the streets around it. Whether your property is on Station Road, Townfoot and Galashiels Road or a nearby road, our applicators can take on the job. Other places close to Stow include Killochyett (1 mile north-west), Fountainhall (3 miles north-west), Lauder (5 miles north-east), Clovenfords (5 miles south) and Nether Blainslie (5 miles east). Further out, we also cover Peebles (13 miles west), Selkirk (10 miles south), Innerleithen (9 miles south-west), Melrose (8 miles south-east), Earlston (8 miles south-east) and Langlee (6 miles south-east).
Around Stow
Stow has its own railway station: Stow station.
How to look after the new joints
Once the sealant has cured, a few habits help it last:
- Have rotten timber repaired before new mastic goes in
- Take care around the mastic when scraping paint
- Keep sills and gutters clear so water drains away
- Do not run silicone over sand mastic
Check the mastic when you check the paintwork. Catching cracks early keeps repairs small.
Good mastic helps keep the frame dry. Once it fails, water can sit against the timber and timber that stays wet can rot.