Scottish Borders · Scotland
Sand Mastic in Midlem
Sand mastic across Midlem and nearby, with old sealant always removed completely and a 12-month guarantee.
- Silicone on a period window that looks wrong
- Window mastic to renew ahead of painting
- Mastic round period door frames that has failed
Sand mastic in Midlem
Burnt sand mastic is a traditional material that sits naturally against stone and brick. It’s a good fit for period properties, where modern sealant can look out of place. If you’re dealing with window mastic to renew ahead of painting and mastic worn away on windows facing the weather, we can put it right, on timber door frames, stone surrounds and sash and case windows alike.
Mastic can only go onto a dry joint, so outside work in Midlem depends on the weather. Let us know about access to every frame, including any upstairs.
Every job comes with our one-year guarantee.
- Place
- Midlem (TD7)
- Wider area
- Scottish Borders
- Cover
- 12 months on all our work
- Quote
- A clear quote up front
- info@mrmastic.co.uk
- Last updated
- 26 October 2026
Honest limits
We’d rather tell you now than do work that will not last, so here’s what sealant can’t put right:
- Broken panes
- Whether work needs listed building consent
- Damaged stone surrounds
Not sure which it is? You can drop us a line at info@mrmastic.co.uk and we will tell you honestly.
Surfaces we seal
- Stone surrounds
- Brick reveals
- Sash and case windows
- Tenement windows
- Timber door frames
- Period & listed homes
What the job involves on each surface
Period and listed homes
On a listed home or in a conservation area, the right material matters. Sand mastic is often the preferred finish.
Sash and case windows
Most of our sand mastic work is on sash windows. Each joint round the box is raked out and renewed.
Aftercare tips
Aftercare is simple:
- Ask us before painting near the mastic
- Ask a joiner to look at soft timber first
- Check with your local planning authority if your home is listed
- Keep sills and gutters clear so water drains away
Look at the mastic when you look over the windows. Catching cracks early keeps repairs small.
Good mastic helps keep the frame dry. Once it fails, water can sit against the timber and timber that stays wet can rot.
What happens on the day
When we arrive, we start by going over the job with you. We protect the surfaces around the joints before we start. The work normally takes a few hours per window, depending on the condition of the joints. Somewhere like Midlem 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.
- 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.
Before we arrive
- Keep children and pets away from the work area
- Clear items away from the joints we’re working on
- Mention any parking rules near the property
Getting a quote
Getting a quote is simple: let us know the job and the location and its rough size. A few photos by email make the job easier to understand, and we will come back to you with a quote.
Related advice
What happens if it’s left?
New mastic over crumbling mastic will not hold. Raking out and preparing the joint gives it a sound base so the new mastic stays put. In a place like Midlem, small leaks are easy to put off, but water through a failed joint keeps working away until it’s fixed.
Homes and businesses are quoted the same way: the amount of work, the access and the products needed, plus any working-time requirements on site. Call for a quick quote and we’ll go through it with you.
Why book with us
- We’re fully insured
- We leave the area clean and tidy
- Rated 4.9 stars on Google
- ARBOMaster approved applicator
Places near Midlem
More services for Midlem
Common questions in Midlem
Can you help a landlord with a rental near Tweedbank station?
Yes, landlords and agents are among the people we work for, and several properties can go on one quote. You can send an email to info@mrmastic.co.uk with the details for a clear quote.
Is Midlem within the area you cover?
Yes, smaller places are covered as well as towns. We work across all of Scotland. Just mention lanes, gates or anything else about the route when you book.
Can you match the sealant colour?
Normally, yes. White, clear and grey are common, and other colours are available, and we agree the colour with you before work begins.
What information do you need?
The location, the problem and the rough size of the job. If you can, email a few photos.
Can new sealant go over the old?
No, because it fails. We remove every bit of old sealant first, so the new joint bonds to clean surfaces.
How do I get a quote for sand mastic in Midlem?
Every job is different, so each one gets its own quote. For a quick quote, email us at info@mrmastic.co.uk and let us know what needs doing and where.
Should I use sand mastic or silicone?
It depends on the window. On many period windows, sand mastic looks right and suits the building and newer frames generally get a flexible sealant.
Is it possible to take out silicone and use sand mastic instead?
Yes. We remove the silicone and clean the joint, then point it with sand mastic.
When to call us in Midlem
Rain on the window surround works into any crack and pushes it out. Exposed elevations normally fail first.
It’s worth asking for a quote if you see:
- Crumbling sand mastic round a window
- A silicone bead on a sash window that spoils the look
- Gaps where the frame meets the masonry
- Weathered mastic on the most exposed windows
In and around Midlem, as anywhere, good sand mastic starts with a clean, dry, properly prepared joint.
Comparing quotes
- What the cure time is
- How the joint is cleaned and prepared
- Who turns up on the day
- Whether they seal over old material or remove it
What affects the quote in Midlem
Some jobs are bigger than they look, and some smaller. What affects the quote:
- Which sealant suits the joint
- The old material and how stubborn it is
- The number and length of the joints
- Mould in or behind the old joints
Combining jobs into one visit is generally more efficient than separate visits, so tell us about everything that needs sealing. You will get one clear quote for the whole job.
What we need to know
Photos help, but a description is a good start. Please mention:
- How many joints, rooms or windows are involved
- Where the job is, and your postcode
- How we’d reach the joints
- What the problem is, such as mould, gaps, leaks or cracking
There’s no standard price list, because every job is different. Instead, your job gets its own clear quote. To arrange one, send an email to info@mrmastic.co.uk.
Midlem 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 failed outside joints work against that.
Letting a property close to Tweedbank station? Then any sash windows need sound mastic to keep draughts and rain out.
Midlem is about 6 miles south of Galashiels, in the Scottish Borders. Every kind of property in Midlem can book us for sand mastic, old or new, large or small. The work is guaranteed for a year. Midlem is one of 89 towns and villages in the Scottish Borders we cover. For nearby work, see our Edinburgh page, about 33 miles away.
Here we cover the TD7 postcode area for sand mastic. Being close to the B6453, Midlem is simple for us to get to. We also cover Lilliesleaf (2 miles south), Bowden (3 miles north-east), Belses (3 miles south-east), Selkirk (4 miles west) and Newtown St Boswells (4 miles north-east). Within a short drive, we also cover Galashiels (6 miles north), Hawick (8 miles south), Kelso (13 miles east), Jedburgh (9 miles south-east), Wilton (8 miles south) and Innerleithen (13 miles north-west).
Around Midlem
The nearest railway station is Tweedbank station, about 4.7 miles north. Nearby you will also find Dingleton Hospital (3.7 miles north) and Castle Holydean (1.9 miles north). Green spaces nearby include Eildon Wester Hill and Hare and Dunhog Mosses.