Scottish Borders · Scotland
Gattonside Sand Mastic
Sand mastic in Gattonside from a team with over 20 years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Silicone on a period window that looks wrong
- Open joints round the window box
- Mastic dropping out of the joint
DIY versus a professional finish
A careful DIYer can reseal a simple joint, such as a straightforward joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
Not every job suits DIY: high-level joints, fire-rated gaps, external movement joints and big jobs call for the right materials, safe access and experience.
Sand mastic in Gattonside, done properly
Sand mastic suits most period window surrounds. Newer frames normally get a flexible sealant instead, and we’ll talk through which suits your home. If you’re dealing with crumbling sand mastic round a window and wind and rain getting in round a sash window, we can help, whatever the surface.
Mastic can only go onto a dry joint, so outside work in Gattonside depends on the weather, and longer journeys are planned in advance. Let us know about access to every frame, including any upstairs.
The work is guaranteed for twelve months. If something is not right with it in that time, tell us and we’ll put it right.
- Where
- Gattonside (TD6)
- Region
- Scottish Borders
- Cover
- A year, on every job
- Price
- Quoted before any work starts
- info@mrmastic.co.uk
- Updated
- 26 October 2026
Honest limits
Sealant isn’t the answer to every problem, and we’d rather say so up front. Sealant will not put right:
- Decisions on consent for listed homes
- Decayed frames that need repair
- Sash cords, weights and draught-proofing of the sashes
If in doubt, email us at info@mrmastic.co.uk and we will say what we think before booking.
What we seal
- Sash and case windows
- Tenement windows
- Brick reveals
- Stone surrounds
- Timber door frames
- Period & listed homes
Leave it or put it right?
If you are redecorating, renew the mastic first. Paint over cracked mastic won’t stop the gaps and traditional guidance is to leave the new mastic unpainted. In an older home around Gattonside, damp from a failed joint can get into timber and plaster, which is a far bigger job than the sealant.
A failed joint rarely gets cheaper to fix by waiting, because water and mould keep working on it. If you’re unsure, send an email to info@mrmastic.co.uk and we’ll give you an honest view and a quote.
Why us?
- Any old sealant cut out fully, not covered over
- Quality sealants from Arbo and Everbuild
- Approved under the ARBOMaster scheme
- Homes, businesses and hotels
Read how sealant jobs are priced or our reviews.
The process
We work through the job in order: protection first, then preparation, sealing and a tidy-up. Typically it takes a few hours for a single window, longer for several and we leave things clean and tidy. Somewhere like Gattonside may be a longer drive, and the journey is planned ahead. Tell us about tracks, gates, a ferry crossing or anything unusual about getting there.
- Each surround is checked first.
- The joint is raked out and cleaned.
- Large voids are packed out.
- We point the joint with sand mastic by hand.
- The finish is dressed neatly.
Preparing for the visit
- Plan for the work area to be out of bounds to pets and children
- Where the joints are inside, avoid wetting them before we arrive
- Let us know about earlier repairs to the joints
Getting a quote
For a quick quote, get us on the phone, or email us if that is easier. Tell us about the joints that need doing and we will explain what’s involved.
Advice
Windows and doors in Gattonside
Sash and case windows are common in older Scottish homes, 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.
For landlords with property near Tweedbank station, any sash windows need sound mastic to keep draughts and rain out. In and around Gattonside, as anywhere, good sand mastic starts with a clean, dry, properly prepared joint.
Gattonside is about 3 miles east of Galashiels, in the Scottish Borders. Jobs in Gattonside get the same care as everywhere else we work: old sealant removed completely, careful preparation and a one-year guarantee. We cover 89 towns and villages across the Scottish Borders, large and small. For nearby work, see our Edinburgh page, about 30 miles away.
Postcode districts we cover here for sand mastic: TD6. Whether your property is on The Loan, Priors Road and Monkswood or anywhere close by, our applicators can take on the job. Other places close to Gattonside include Melrose (1 mile south), Darnick (1 mile south-west), Newstead (1 mile south-east), Tweedbank (2 miles west) and Langlee (2 miles west). We also work in nearby towns such as Galashiels (3 miles west), Hawick (13 miles south), Kelso (11 miles east), Selkirk (6 miles south-west), Jedburgh (11 miles south-east) and Wilton (13 miles south).
Around Gattonside
The nearest railway station is Tweedbank station, about 1.3 miles west. Well-known places in the area include Melrose Motor Museum (0.5 miles south-east) and Castle Holydean (3 miles south). The countryside around Gattonside includes Eildon Hill North and Bemersyde Moss.
What affects the cost of sand mastic
Some jobs are bigger than they look, and some smaller. What affects the quote:
- How many rooms, windows or areas are involved
- Any working-time requirements on site
- How easy the joints are to reach
- How much old sealant there is and how hard it is to remove
The cost depends on how much there is to do, how hard the old material is to remove and how easy the joints are to reach. You will have a clear quote before any work starts, so you know where you stand.
Asking for a quote
Photos help, but a description is a good start. Please mention:
- Pictures of the joints, sent by email
- How we’d reach the joints
- Where the job is, and your postcode
- The problem you’ve noticed
We quote each job on its own, so the first step is telling us about yours. Just drop us a line at info@mrmastic.co.uk with the details, and photos are welcome.
For landlords and businesses
We work for letting agents and landlords as well as homeowners. Sealant work between tenants is a simple way to keep a property in good order before the next move-in.
If you manage several properties in or around Gattonside, several properties can go on one quote. Send us the addresses and the work at each.
Your questions about sand mastic in Gattonside
Do you cover smaller places like Gattonside?
Yes, Gattonside is covered. Our work covers the whole of Scotland, and smaller places are part of that. The journey is planned ahead, so it helps to know about access.
Do you cover Gattonside for sand mastic?
Yes, Gattonside is within the area we cover. We work across all of Scotland. Just email us at info@mrmastic.co.uk with a few details of the job.
Are you ARBOMaster approved?
Yes. ARBOMaster is the approved applicator scheme for Arbo sealants, and we’re part of it.
Is it possible to paint over sand mastic?
The usual advice is to leave sand mastic unpainted. If you’re redecorating the window, ask us first and we’ll talk you through it.
What information do you need?
Just the basics: the address or postcode, what’s wrong and any access issues. Then drop us a line at info@mrmastic.co.uk.
How long will you be here?
Typically it takes a few hours for a single window, longer for several. Larger jobs naturally take longer, and we’ll say how long yours will take.
Can old silicone round a sash window be swapped for sand mastic?
Often, yes. Once the silicone is out and the joint prepared we point it with sand mastic.
Can I choose the sealant colour?
We help you choose a colour that suits, from white and clear to greys and other shades. The product needed can limit the range.
Towns and villages near Gattonside
What else we do in Gattonside
Looking after it afterwards
To keep the joints looking good and working properly:
- Inspect the joints round the windows every year or so
- Renew mastic before redecorating the windows
- Make sure water runs off the sill
- Have rotten timber repaired before new mastic goes in
Avoid painting over the new mastic, which is the traditional advice. Ask us before any decorating around it.
Renewing mastic before redecorating saves doing it twice. Painting over failed mastic hides the problem for a while.