Scottish Borders · Scotland
Sand mastic for sash & case windows in Kelso, Scottish Borders
Specialist sand mastic for Kelso: careful preparation, the right product and tidy work. Call for a quick quote.
- Gaps between timber frames and stone or brick
- Failed mastic on an exposed elevation
- Gaps round a timber door in stone or brick
Kelso homes and the weather
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.
Managing a site like Kelso High School? Then the mastic around its windows and doors needs looking after like any other building’s.
Kelso is about 32 miles south-east of Bonnyrigg, in the Scottish Borders. From the centre of Kelso to the outskirts, sand mastic is available for homes and businesses alike, from flats and houses to offices and hotels. 89 places in the Scottish Borders are on our list. For nearby work, see our Edinburgh page.
Here we cover the TD5 postcode area for sand mastic. Whether your property is on Horse Market, Station Road and Forestfield or anywhere close by, our applicators can take on the job. With the A698 and A699 close by, Kelso is simple for us to get to for sand mastic. Other places close to Kelso include Sprouston (2 miles east), Ednam (2 miles north), Heiton (2 miles south-west), Stichill (3 miles north) and Roxburgh (3 miles south-west). Larger places within reach include Galashiels (15 miles west), Jedburgh (10 miles south-west), Duns (13 miles north), Melrose (11 miles west), Earlston (10 miles west) and Lauder (15 miles north-west). Being one of the Scottish Borders’s larger places, Kelso has homes, rented property and businesses of every kind.
Around Kelso
In Kelso, that means homes and buildings near The Waggon Inn, among other places. Other landmarks nearby include Kelso Hospital (less than half a mile north-west) and Roxburgh Castle (1 mile west).
Sand mastic for homes and businesses in Kelso
We work across Kelso renewing sand mastic on sash windows and doors. Every joint is cleaned out and filled by hand for a neat, traditional finish. Typical jobs include crumbling sand mastic round a window and tired mastic found when preparing windows for paint, across period & listed homes, timber door frames and brick reveals.
Outdoor sealant needs a dry surface, so window work around Kelso is planned around the weather, and longer journeys are planned in advance. Let us know about access to every frame, including any upstairs.
You’re covered for a year from the day we finish. If anything isn’t right with it, email us at info@mrmastic.co.uk.
- Location
- Kelso (TD5)
- Region
- Scottish Borders
- Cover
- 12 months on all our work
- Price
- A clear price before we start
- info@mrmastic.co.uk
- Updated
- 26 October 2026
Also in Kelso
Looking after it afterwards
So the new joints stay in good condition:
- Check the mastic when you check the paintwork
- Clear gutters so water doesn’t pour onto the windows
- Plan mastic work ahead of painting
- Ask us before painting near the mastic
Make sure water drains away from the window surround. Constant wetting wears the mastic faster.
Crumbling mastic lets rain into the joint. It can soak into the frame and the surrounding masonry, so renewing it early is worth it.
DIY sealant or a professional job?
If you’ve already had a go yourself, that’s fine. We remove it and do the joint properly, so tell us about it when you ask for a quote.
Some sealant jobs are within reach of a careful DIYer, such as a straightforward joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
When something else is needed
Honest advice matters more to us than a booking, so here’s what sealant can’t fix:
- Rotten sashes, sills or window boxes (a joiner’s job)
- Masonry that needs repairing
- Sashes that rattle, stick or won’t open
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
- Period & listed homes
- Tenement windows
- Stone surrounds
- Sash and case windows
- Brick reveals
- Timber door frames
Different surfaces, different methods
Timber door frames
Sand mastic is used round timber door frames too. The method is the same as for windows.
Stone surrounds
Old stone surrounds are often uneven, so the joint varies in width. We shape it by hand to follow the stone.
Landlord and commercial work in Kelso
Failed sealant is one of the commonest items on a check-out report, and it’s quick to put right between tenancies. We can quote for more than one property at once.
A neglected joint can let water reach the structure, which matters even more when someone else lives there. Resealing at the right time is simple maintenance that we can handle for you.
The process
The work is kept neat and contained to the area we are working on, so you can get on with your day. The job usually takes a few hours per window, depending on the condition of the joints, and we tell you how long to leave it before we go. Around Kelso, distance and access matter more than parking. Let us know how to find you and how to reach the joints, and the visit is planned around that.
- First we agree which joints need doing.
- Old mastic and any loose material are raked out.
- We pack any deep voids first.
- We apply the mastic by hand and shape it.
- The surface is finished to suit the stone or brick.
How to prepare
- Clear the area around the work
- Try not to wet indoor joints just before the visit
- Mention any sign-in or site rules at work premises
Ask for a quote
Asking for a quote is easy: tell us what needs doing and where. Photos by email help us understand the job.
Related advice
Kelso: your questions answered
Is Kelso within the area you cover?
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.
Is there a guarantee on sand mastic in Kelso?
All our work, in Kelso and everywhere else, comes with a 12-month guarantee. We are also fully insured and ARBOMaster approved.
Can you replace silicone on a period window with sand mastic?
In most cases. We remove the silicone and clean the joint before the sand mastic goes in.
What’s sand mastic made of?
A traditional pointing material made from sand and a linseed-oil-based binder, used between timber frames and stone or brick.
Is it worth trying it myself?
It depends on the job. Work at height, movement joints, fire-rated gaps and large areas are best left to a professional.
Are you fully insured?
Yes. Mr Mastic is fully insured.
How long does sand mastic take?
Typically it takes a few hours per window, depending on the condition of the joints. Larger jobs naturally take longer.
Do you work for landlords and businesses?
Yes. Domestic, commercial and hotel work are all part of what we do, and we’re fully insured.
Do you need sand mastic in Kelso?
Previous repairs in cement or silicone often trap water or crack away. They do not move with the timber, and they normally need raking out.
Keep an eye out for any of the following:
- Draughty sash windows at the surround
- Silicone on a period window that looks wrong
- Cement or filler used on old window joints that has cracked
- Old sand mastic that has cracked, crumbled or fallen out
Around Kelso, as everywhere, sand mastic is only as good as the preparation behind it.
Comparing quotes
- What insurance they hold
- How the surfaces are prepared before sealing
- Is the old sealant removed completely?
- Whether you can choose the colour