Scottish Borders · Scotland
Sand mastic for sash & case windows in Swinton, Scottish Borders
Sand mastic for Swinton, by sealant specialists with 20+ years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Old cement repairs round a window that have failed
- A silicone bead on a sash window that spoils the look
- Gaps where the frame meets the masonry
The process
On the day, we look over the joints with you first, so there are no surprises. Surfaces next to the work are protected before any work starts. The work usually takes a few hours for a single window, longer for several. Somewhere like Swinton 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.
- We check each window surround and the condition of the joint.
- 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.
- We finish the mastic to a tidy line.
Before we arrive
- Mention any tricky access
- Let us know if you’ve seen damp or leaks
- For indoor joints, keep the area dry beforehand if you can
Getting a quote
For a quote, drop us a line at info@mrmastic.co.uk and tell us where the job is and what the problem looks like. You’ll have a clear quote before we start.
Related advice
About our sand mastic in Swinton
We work across Swinton renewing sand mastic on sash windows and doors. Each joint is raked out, prepared and pointed by hand, finished to suit the masonry. Typical jobs include mastic that needs renewing before redecorating and gaps between timber frames and stone or brick, on timber door frames, stone surrounds and brick reveals.
Older stone-built homes in Scotland often have sash and case or timber windows set in stone. Those suit a traditional sand mastic or a neutral-cure sealant, not an acetoxy silicone that can attack some stone.
All our work comes with a 12-month guarantee, wherever you are in the Scottish Borders.
- Location
- Swinton (TD11)
- Region
- Scottish Borders
- Guarantee
- One year on every job
- Price
- A clear quote up front
- info@mrmastic.co.uk
- Page updated
- 26 October 2026
Quotes for sand mastic in Swinton
The quote reflects the job in front of us. We look at:
- How many rooms, windows or areas are involved
- The product the joint needs
- Working hours on commercial sites
- Mould in or behind the old joints
Every job is a little different, so we quote each one individually. Size, access and the product the joint needs all make a difference.
Asking for a quote
Photos help, but a description is a good start. Try to tell us:
- Photos by email, if that’s easy
- If it’s domestic, commercial or a hotel
- Where the job is, and your postcode
- The problem you’ve noticed
Need a quote? Please email us at info@mrmastic.co.uk with a few details. We’ll explain what we’d do and give you a clear price before any work starts.
What we cannot put right
Honest advice matters more to us than a booking, so here’s what new sealant won’t do:
- Decayed frames that need repair
- Sash cords, weights and draught-proofing of the sashes
- Putty and glazing repairs
Not sure which it is? You can email us at info@mrmastic.co.uk and we will tell you honestly before booking.
What we seal
- Sash and case windows
- Brick reveals
- Period & listed homes
- Tenement windows
- Stone surrounds
- Timber door frames
Swinton: your questions answered
Will you come out to Swinton?
Yes, Swinton 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.
Can you do sand mastic in Swinton?
Yes. Our work covers the whole of Scotland, and Swinton is part of that. You can send an email to info@mrmastic.co.uk and tell us what needs doing.
Where do you work from?
Mr Mastic is based in Crawley. We cover Swinton and the rest of the Scottish Borders, along with the rest of our area.
Should I check with the council before work on a listed or conservation-area home?
Yes, it’s worth checking. Ask your local planning authority whether consent is needed for work on a listed home or in a conservation area.
How much does sand mastic cost in Swinton?
There’s no set price, as it depends on the job: its size, the old material, access and the product needed. We agree the price before any work begins.
How long does sand mastic take to go off?
Not straight away. The skin forms first, and the full set comes later and we will give you an idea for your job.
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 new sealant go over the old?
No, because it fails. The old sealant always comes out first, so the new sealant bonds properly.
More services for Swinton
Aftercare tips
To keep the joints looking good and working properly:
- Clear gutters so water does not pour onto the windows
- Avoid patching sand mastic with silicone
- Ask us before painting near the mastic
- Look over the window mastic once a year
Check the mastic when you check the paintwork. Small cracks are easier to deal with early.
Once mastic starts to crumble, rain gets in. That water can reach the timber frame and the wall, so renewing it early is worth it.
Signs you need sand mastic in Swinton
Previous repairs in cement or silicone often trap water or crack away. They do not move with the timber, and they generally need raking out.
These are the problems we’re asked about most:
- Gaps round a timber door in stone or brick
- Mastic worn away on windows facing the weather
- Cement or filler used on old window joints that has cracked
- Draughts and rain around sash boxes
Around Swinton, as everywhere, sand mastic is only as good as the preparation behind it.
Questions to ask before booking
- Which sealant they’ll use, and why
- How long to leave it before use
- How the joint is cleaned and prepared
- How hidden problems are handled
Should I try it myself first?
Some sealant jobs are within reach of a careful DIYer, like a short, easy-to-reach joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
The biggest DIY mistake is sealing over old sealant. New silicone won’t bond to old, so it lifts and traps water and mould underneath. All the old material has to come out first.
Why it’s worth doing now in Swinton
Not every draught comes from the sashes themselves. Gaps between the frame and the wall can be just as bad and new mastic seals them. Out of town in Scotland, exposed walls take a lot of weather, and once water gets behind a failed joint, damp in stone or harled walls is slow to dry out.
What you pay reflects the work, not a rough estimate. That’s why we ask about the job first and send you a clear quote before any work starts.
Why book with us
- 180+ five-star Google reviews
- Old sealant always removed completely
- An ARBOMaster approved applicator
- Arbo and Everbuild products
See what affects the cost and what customers say.
Sand mastic in Swinton: local notes
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, and the joint between the box frame and the stone or render is traditionally pointed with sand mastic.
For jobs in and around Swinton, choosing the right material for each joint is as important as a tidy finish.
Swinton is in the Scottish Borders. Homes, rented property, offices and hotels in Swinton is covered for sand mastic. Every job comes with our one-year guarantee. Our area takes in 89 places across the Scottish Borders, large and small. There’s also a page for Edinburgh, about 40 miles away.
We cover every part of TD11 for sand mastic and the streets around it. You’ll find streets such as Main Street, The Green and Wellfield. Nearby, we also carry out sand mastic in Duns (5 miles north-west) and Gavinton (5 miles north-west). Within a short drive, we also cover Kelso (11 miles south-west), Eyemouth (12 miles north-east) and Chirnside (6 miles north).
What’s near Swinton
A little further out are Knoll Hospital (4.7 miles north-west) and Bite-about Pele (3.2 miles west). For a walk, there’s Lake of the Hirsel.