Scottish Borders · Scotland
Sand mastic for sash & case windows in Oxnam, Scottish Borders
Traditional burnt sand mastic around sash and case windows and doors in stone and brick in Oxnam, with a one-year guarantee on every job. Call for a quick quote.
- Old sand mastic that has cracked, crumbled or fallen out
- Gaps between timber frames and stone or brick
- Gaps round a timber door in stone or brick
Keeping the joints in good condition
How long the joints last depends on use and care. We suggest:
- Don’t run silicone over sand mastic
- Take care around the mastic when scraping paint
- Leave the new mastic unpainted
- Inspect the joints round the windows every year or so
Avoid sealing over the mastic with silicone. If you see a crack, ask us to take a look rather than patching it.
Fine cracks show the mastic is starting to fail. Renewing it then is simpler than waiting until it falls out.
About our sand mastic in Oxnam
We work across Oxnam renewing sand mastic on sash windows and doors. Every joint is cleaned out and filled by hand for a neat, traditional finish. If you have cracked mastic round a front door frame and old cement repairs round a window that have failed, we can help, whatever the surface.
In and around a place like Oxnam, homes range from older stone-built cottages to newer houses. Exposed frames and sills take the full force of wind-driven rain, so the mastic there works hard.
All of our work is guaranteed for twelve months.
- Location
- Oxnam (TD8)
- Wider area
- Scottish Borders
- Cover
- A year, on every job
- Price
- Quoted before any work starts
- info@mrmastic.co.uk
- Page updated
- 26 October 2026
How the job changes by surface
Brick reveals
Gaps between frame and brick let in rain and draughts. New mastic seals the gap.
Stone surrounds
Sand mastic sits naturally against stone. The finish blends with the masonry.
Oxnam homes and the weather
Many older homes in Scotland have sash and case windows, often pointed into the wall with traditional sand mastic. 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.
Around Oxnam, as everywhere, sand mastic is only as good as the preparation behind it.
Oxnam is about 12 miles east of Hawick, in the Scottish Borders. From the centre of Oxnam to the outskirts, sand mastic is available for homes and businesses alike. We cover 89 towns and villages across the Scottish Borders, large and small. We also work in Edinburgh, around 44 miles away.
Postcode districts we cover here for sand mastic: TD8. If you are just outside Oxnam, we cover Jedburgh (3 miles north-west), Nisbet (5 miles north), Ancrum (6 miles north-west), Morebattle (6 miles north-east) and Roxburgh (8 miles north). Larger places within reach include Hawick (12 miles west), Kelso (10 miles north), Selkirk (15 miles north-west), Wilton (12 miles west), Melrose (14 miles north-west) and Earlston (15 miles north-west).
Local landmarks in Oxnam
Well-known places in the area include Ferniehirst Castle (2.8 miles west) and Jedburgh Abbey Museum (3.2 miles north-west). Not far away are Whitton Loch.
When something else is needed
In fairness, some problems need a different trade:
- Sashes that need overhauling
- Broken panes
- Crumbling stone or brickwork round the window
Not sure which it is? You can send an email to info@mrmastic.co.uk and we will tell you honestly before you book.
What we seal
- Stone surrounds
- Tenement windows
- Sash and case windows
- Brick reveals
- Period & listed homes
- Timber door frames
How the visit works
We bring everything the job needs with us. Once we’ve agreed what’s being done, we protect the area and start. It normally takes a few hours for a single window, longer for several. Around Oxnam, distance and access matter more than parking. Let us know how to find you and how to reach the joints.
- Each surround is checked first.
- We rake out the old mastic and clean the joint.
- We fill deep gaps so the new mastic isn’t too thick.
- New sand mastic is applied and shaped by hand.
- The finish is dressed neatly.
How to prepare
- Let us know about parking restrictions
- Keep children and pets away from the work area
- For business premises, tell us about site rules or sign-in
Ask for a quote
There’s no standard price list, because every job is different. Instead, we send you a clear quote for your job. To get started, send an email to info@mrmastic.co.uk.
Advice
Questions from Oxnam
Do you cover Oxnam for sand mastic?
Yes. Our work covers the whole of Scotland, and Oxnam is part of that. You can send an email to info@mrmastic.co.uk and tell us what needs doing, and we will give you a clear price.
Will you come out to Oxnam?
Yes, Oxnam is covered. We work across all of Scotland, from towns to the smallest places. Longer journeys are simply planned in advance.
Is it OK to seal over old sealant?
No. Fresh sealant does not stick to old sealant, and it traps any mould or water underneath. It all has to come out first.
Do you offer different sealant colours?
We help you choose a colour that suits, from white and clear to greys and other shades. The product needed can limit the range.
Do you remove the old sealant?
Yes. Sealing over old sealant is the main reason resealing fails early, and it’s something we never do.
Can you work on commercial sites?
Yes. We can plan bigger jobs in stages.
Which is right for my windows, sand mastic or modern sealant?
It depends on the window. Period windows in stone or brick usually suit sand mastic, while modern frames normally get a flexible sealant.
Can sand mastic be painted?
Traditional guidance is not to paint over sand mastic. Ask us before you decorate around it and we’ll advise.
Other services in Oxnam
Common problems we fix in Oxnam
Most of it is simply age. Sand mastic is a maintenance item like any pointing and how long it lasts depends on the weather it faces.
The most common problems we see are:
- A silicone bead on a sash window that spoils the look
- Crumbling sand mastic round a window
- Open joints round the window box
- Old cement repairs round a window that have failed
For an older house near a landmark such as Oxnam Parish Church, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
Before you book anyone
- How the joint is cleaned and prepared
- What product goes in the joint
- Who does the work, and how experienced they are
- What the cure time is
Why act early in Oxnam
If you are redecorating, renew the mastic first. Paint over cracked mastic will not stop the gaps, and the new mastic is traditionally left unpainted. 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.
The cost depends on the size of the job, how much old material has to come out and access to the work. We give a clear quote before any work starts, so you know where you stand.
Why Oxnam clients choose us
- Quality sealants from Arbo and Everbuild
- Old sealant always removed completely
- ARBOMaster approved applicator
- Anti-fungal sanitary silicone in wet areas
Should I try it myself first?
If you’re set on DIY, put the effort into preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it fails, we can still redo it.
The difference is mostly in the preparation and the 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.