Scottish Borders · Scotland
Sand Mastic in Selkirk
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for homeowners, landlords and businesses in Selkirk. Fully insured, ARBOMaster approved and guaranteed for a year.
- Failed mastic on an exposed elevation
- Mastic dropping out of the joint
- Mastic that needs renewing before redecorating
Sand mastic for homes and businesses in Selkirk
Sand mastic is the traditional way to point the gap between a timber window frame and the stone or brick around it. It’s a mix of sand and a linseed-oil-based binder and built up by hand. On older homes, it suits the building far better than silicone. We work on timber door frames, tenement windows and brick reveals, and common reasons people get in touch are mastic that needs renewing before redecorating and failed mastic on an exposed elevation.
Many older Scottish homes still have timber windows set into stone walls. The sealant has to suit the stone, which rules out acetoxy silicones that can mark or attack it.
All our work comes with a one-year guarantee, wherever you are in the Scottish Borders.
- Where
- Selkirk (TD7)
- Region
- Scottish Borders
- Guarantee
- One year on every job
- Quote
- Quoted before any work starts
- info@mrmastic.co.uk
- Last updated
- 26 October 2026
Different surfaces, different methods
Sash and case windows
Most of our sand mastic work is on sash windows. We renew the mastic round each box.
Period and listed homes
On a listed home or in a conservation area, the right material matters. Sand mastic is often the preferred finish.
What we are called out for in Selkirk
Previous repairs in cement or silicone often trap water or crack away. They don’t suit the joint, and they usually need raking out.
Look out for any of the following:
- Cracked mastic round a front door frame
- Draughts and rain around sash boxes
- Cement or filler used on old window joints that has cracked
- Gaps between timber frames and stone or brick
If you let a flat or house near Galashiels station, any sash windows need sound mastic to keep draughts and rain out.
Before booking anyone
- What happens if the job turns out different
- Whether they seal over old material or remove it
- What preparation is included
- When the joint can take water or movement
The process
All our tools and materials come with us in the van, so there’s nothing for you to buy. Once we’ve agreed what’s being done, the area is protected and the work begins. Most jobs take a few hours for a single window, longer for several. Outdoor work around Selkirk depends on the weather, as sealant needs a dry surface, so external jobs may need to move if the day turns wet. Indoor work goes ahead whatever the weather.
- We check the window surrounds and agree which joints need renewing.
- Old, loose mastic is raked out and the joint cleaned.
- We pack any deep gaps so the mastic sits at the right depth.
- Sand mastic is mixed and applied by hand, then shaped to the joint.
- The finish is dressed so it sits neatly against the stone or brick.
How to prepare
- For indoor joints, keep the area dry beforehand if you can
- Let us know about stairs, lifts or work at height
- Let us know about earlier repairs to the joints
Ask for a quote
To get a quote, email us at info@mrmastic.co.uk with the location and a short description of the problem. You’ll have a clear quote before we start.
Related advice
Sand mastic in Selkirk: local notes
With historic houses such as Bowhill House (about 2.9 miles west) nearby, there’s older building stock in the area around Selkirk as well as newer homes. In older buildings, older timber frames in brick or stone need a different approach from a modern uPVC window. Many older homes in Scotland have sash and case windows, and the joint between the box frame and the stone or render is traditionally pointed with sand mastic.
Homes close to Church Of Our Lady And St Joseph include some older properties, and the windows may be timber, sash or later replacements, and each needs the right sealant against the wall. If you look after a building such as Selkirk High School, its window and door frames need their mastic kept sound, just like a home’s.
Selkirk is about 5 miles south of Galashiels, in the Scottish Borders. We carry out sand mastic for homes and businesses in Selkirk and the surrounding area. Our the Scottish Borders coverage runs to 89 places, and Selkirk is one of them. There’s also a page for Edinburgh, about 31 miles away.
Jobs for sand mastic in TD7 is quoted and booked the same way as anywhere else. Whether your property is on High Street, Market Place and Station Road or a nearby road, we can help. Main roads around Selkirk include the A7 and A707, so getting to you is simple. We also cover Boleside (3 miles north-east), Midlem (4 miles east), Broadmeadows (4 miles west), Ashkirk (4 miles south) and Yarrowford (4 miles west). Larger places within reach include Galashiels (5 miles north), Hawick (9 miles south), Peebles (15 miles north-west), Jedburgh (12 miles south-east), Wilton (9 miles south) and Innerleithen (10 miles north-west). Selkirk is one of the larger places we cover in the Scottish Borders.
Near you in Selkirk
Locally, jobs take us to homes and businesses close to Town Arms Inn and the streets around them. The nearest railway station is Galashiels station, roughly 5 miles north. Other landmarks nearby include Borders General Hospital (5 miles north-east) and Peel Hill (less than half a mile south). For a walk, there’s Hare and Dunhog Mosses and Haining Loch.
Honest limits
A few problems are outside what sealant work can do:
- Decisions on consent for listed homes
- Sash cords, weights and draught-proofing of the sashes
- Rotten sashes, sills or window boxes (a joiner’s job)
Not sure which it is? You can send an email to info@mrmastic.co.uk and we’ll tell you honestly before you book.
Surfaces we seal
- Stone surrounds
- Sash and case windows
- Timber door frames
- Brick reveals
- Period & listed homes
- Tenement windows
Why it’s worth doing now in Selkirk
An open joint round the frame lets weather in. Left, water can reach the timber and the wall, so dealing with it now protects both. In a place like Selkirk, small leaks are easy to put off, but water through a failed joint keeps working away until it’s fixed.
What it costs depends on the amount of work, how much old material has to come out and access to the work. You will have a clear quote before any work starts, so you know where you stand.
Why book with us
- Tidy, careful work
- 180+ five-star Google reviews
- Domestic, commercial and hotel work
- Anti-fungal silicone where joints get wet
Take a look at how sealant jobs are priced and our reviews.
Aftercare tips
So the new joints stay in good condition:
- Keep modern sealant off the mastic
- Sort the mastic before the decorators arrive
- Go gently near the mastic when preparing windows
- Clear gutters so water doesn’t pour onto the windows
Avoid sealing over the mastic with silicone. If you see a crack, ask us to take a look before trying a quick fix.
Crumbling mastic lets rain into the joint. That water can reach the timber frame and the wall so early renewal protects both.
Quotes for sand mastic in Selkirk
Your quote is based on your job. We take into account:
- When we can work, for business premises
- How many rooms, windows or areas are involved
- The amount of work
- The type of sealant required
A failed joint rarely gets cheaper to fix by waiting, because water and mould keep working on it. If you’re unsure, drop us a line at 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:
- Access, such as stairs, a lift or height
- What’s wrong with the joints now
- Any previous sealing or DIY work
- Roughly how big the job is
If you’re in Selkirk and need sand mastic, email us at info@mrmastic.co.uk. Tell us what the problem is and where, and we’ll agree the price before any work begins.
Places near Selkirk
More services for Selkirk
FAQs for Selkirk
Can you do sand mastic in Selkirk?
Yes. We work across all of Scotland, and Selkirk is part of that. You can send an email to info@mrmastic.co.uk and tell us what needs doing.
Is Selkirk within the area you cover?
Yes, we do. We work across all of Scotland, and smaller places are part of that. The journey is planned ahead, so it helps to know about access.
What’s sand mastic made of?
Sand mastic is a traditional material for pointing round windows and doors. It combines sand with a linseed-oil-based binder.
Do you have insurance?
Yes. Full insurance covers our work.
Can sand mastic be painted?
Traditional guidance is not to paint over sand mastic. Ask us before you decorate around it and we will advise.
Is there any odour?
That depends on the sealant. Some smell for a while, some hardly at all.
Will you leave a mess?
Not at all. We work neatly, protect the area around the joints and tidy up afterwards.
Do I need to be at home?
If the work is inside, we need someone to let us in. Once we have agreed the job, you do not need to watch us work.