South Lanarkshire · Scotland
Glazing & conservatory sealant in Scottish Borders, South Lanarkshire
Professional glazing silicone in and around Scottish Borders, with old sealant always removed completely and a 12-month guarantee.
- Leaking glazing joints on a rooflight
- Conservatory leaks at frame and glazing joints
- Water tracking down the inner face of the glass
Should I try it myself first?
The biggest DIY mistake is sealing over old sealant. Silicone doesn’t stick to old silicone, so it lifts and traps water and mould underneath. Everything old must be removed first.
A careful DIYer can reseal a simple joint, 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.
Glazing silicone in Scottish Borders
We work across Scottish Borders on glazing joints for homes and businesses. From conservatories to shower screens, it’s the same careful method. We work on glass-to-frame joints, glass-to-glass joints and shower screens, and people most often call us about water escaping where a screen meets the wall and a quick top-up bead that didn’t last.
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 of our work is guaranteed for twelve months, and the guarantee is the same wherever you are.
- Where
- Scottish Borders (ML12)
- Region
- South Lanarkshire
- Guarantee
- One year on every job
- Quote
- Quoted before any work starts
- info@mrmastic.co.uk
- Last updated
- 26 October 2026
Looking after it afterwards
Joint life depends on how it’s used and looked after. Here’s what we suggest:
- Do not leave a drip for the next storm
- Keep conservatory gutters clear of leaves
- Use gentle products around the joints
- Don’t use a blade near the sealant
Avoid scraping near the new silicone when cleaning the glass. A soft cloth or sponge is best.
Cracked glazing silicone means the joint has failed. Renewing it early keeps it simple compared with fixing water damage later.
Questions from Scottish Borders
Is Scottish Borders in your area for glazing silicone?
Yes, Scottish Borders is within the area we cover. We work across all of Scotland. You can drop us a line at info@mrmastic.co.uk and let us know what needs doing, and we’ll send you a clear quote.
Do you cover smaller places like Scottish Borders?
Yes, Scottish Borders is covered. We work across all of Scotland, from towns to the smallest places. Longer journeys are simply planned in advance.
Will the old sealant be removed?
Always. Sealing over the old bead is the commonest cause of early failure, so we never do it.
Are you ARBOMaster approved?
Yes. We are an ARBOMaster approved applicator, which is run for the Arbo sealant brand.
Can you replace a misted double-glazed unit?
No. We renew the sealant. A glazier replaces glass and units.
Will resealing stop my conservatory leaking?
That depends where the water is getting in. Sealant joints we can renew but roof and panel problems need another trade.
Is it enough to run a bead over the old sealant?
A top-up rarely holds. Fresh silicone won’t bond to cured silicone, so we remove the old sealant and clean the joint.
What information do you need?
Where the job is, what the problem is and roughly how big it is. If you can, email a few photos.
How the job changes by surface
Rooflights
We reseal the glazing joints on rooflights. If the leak is from the roof around it, a roofer needs to look.
Conservatory frames
Conservatory frame joints are a common source of leaks. We remove the failed sealant and renew it.
Landlords, agents and businesses in Scottish Borders
Mouldy or split sealant often shows up at the end of a tenancy, and it’s quick to put right between tenancies. Several properties can go on one quote.
In hotels, rooms out of use cost money, so we plan the work room by room around your bookings where we can. Hotel work is part of what we do, alongside homes and businesses.
The process
When we get to you, we compare the joints with what we discussed. If we find something unexpected, we talk it through with you first. After that, the work takes a few hours, depending on how many joints need doing. Outside jobs in Scottish Borders need a dry day, because sealant won’t bond to a wet joint, so external jobs may need to move if the day turns wet. Work indoors isn’t affected.
- First, we check where the water gets in.
- The failed silicone is cut out without marking the glass or frame.
- We clean the glass and frame so the new silicone bonds.
- We lay the new bead and tool it smooth.
- Each joint is checked and, where possible, water-tested.
Getting ready for the visit
- Move anything stored near the joints
- Tell us about any previous sealing or DIY attempts
- Let us know about stairs, lifts or work at height
Ask for a quote
A good description makes for an accurate quote. Let us know the location, the problem and roughly how many joints.
Related advice
Common problems we fix in Scottish Borders
Sunlight breaks sealant down and roof joints get the most sun. It goes brittle, cracks and stops sticking on the glass.
If you can see any of these, it’s time to have the joints looked at:
- Water getting into a conservatory at the joints
- Glazing silicone that has cracked or come away
- New silicone smeared over old sealant
- Water escaping where a screen meets the wall
If you live in an older home near Tweedsmuir Parish Church, frames set in older brick or stone need a sealant that suits the wall as well as the frame.
What your quote should include
- Which colour the sealant will be
- Who turns up on the day
- Whether the sealant suits the joint
- What preparation is included
More services for Scottish Borders
How we quote for glazing silicone
You’ll get a clear quote before any work starts. It takes into account:
- How much old sealant there is and how hard it is to remove
- Whether there’s mould to deal with
- Any working-time requirements on site
- The type of sealant required
What it costs depends on the amount of work, how much old material has to come out and how easy the joints are to reach. We give a clear quote before work begins.
Helping us quote
To make quoting easier, let us know:
- How we’d reach the joints
- The address or postcode of the job
- Any previous sealing or DIY work
- The problem you’ve noticed
Need a quote? Please email us at info@mrmastic.co.uk and tell us about the job. You will know what we plan to do, and what it will cost, before any work begins.
Frames and glazing around Scottish Borders
Under the Repairing Standard, private landlords in Scotland have to keep homes wind and watertight, and failed outside joints work against that. Many older homes in Scotland have sash and case windows, often pointed into the wall with traditional sand mastic.
In and around Scottish Borders, as anywhere, good glazing silicone starts with a clean, dry, properly prepared joint.
Scottish Borders is about 22 miles south-east of Carluke, in South Lanarkshire. Jobs in Scottish Borders get the same care as everywhere else we work: the old material taken out, joints prepared properly and a 12-month guarantee. We cover 139 towns and villages across South Lanarkshire, from the larger towns to small villages. There’s also a page for Edinburgh, roughly 31 miles from Scottish Borders.
Postcode districts we cover here for glazing silicone: ML12. Being close to the A701, Scottish Borders is simple for us to get to. We also cover the places around Scottish Borders: Broughton (7 miles north), Coulter (7 miles north-west), Biggar (8 miles north-west), Skirling (9 miles north) and Symington (9 miles north-west).
Local landmarks in Scottish Borders
We work in homes and buildings around Crook Inn, among other places. Well-known places in the area include Oliver Castle (0.9 miles south-west). Not far away are Glenwhappen Rig.