Highland · Scotland
Sand Mastic in Gillock
Sand mastic across Gillock and nearby, with every bit of old sealant taken out first and a 12-month guarantee.
- Old sand mastic that has cracked, crumbled or fallen out
- Window mastic to renew ahead of painting
- Silicone on a period window that looks wrong
Sand mastic for homes and businesses in Gillock
Silicone on a period window often looks wrong and does not suit the building. Sand mastic gives a finish that matches the age of the house, and we can replace one with the other. We work on brick reveals, period & listed homes and sash and case windows, and people most often call us about old cement repairs round a window that have failed and weathered mastic on the most exposed windows.
Mastic can only go onto a dry joint, so outside work in Gillock depends on the weather, and longer journeys are planned in advance. Let us know about access to every frame, including any upstairs.
Big or small, it’s backed by our 12-month guarantee in Gillock and across Highland.
- Where
- Gillock (KW1)
- Region
- Highland
- Cover
- A year, on every job
- Quotes
- A clear quote up front
- info@mrmastic.co.uk
- Page updated
- 26 October 2026
When to call us in Gillock
Paint, silicone or cement used over old mastic causes problems. They do not move with the timber, and they generally need raking out.
People generally contact us when they notice something like this:
- Tired mastic found when preparing windows for paint
- Mastic dropping out of the joint
- Old cement repairs round a window that have failed
- Modern sealant on a period surround
If you let a flat or house near Georgemas Junction station, older sash windows in a rental need their mastic kept sound to keep the weather out.
Comparing quotes
- Who turns up on the day
- What preparation is included
- Which colour the sealant will be
- What happens if they find a problem under the old sealant
Why deal with it now?
Gaps round a sash window let in rain and draughts. Water can get to the frame and the masonry, so dealing with it now protects both. Out of town in Scotland, exposed walls take a lot of weather, and damp in stone or harled walls takes a long time to dry once water gets behind a joint.
Doing several joints on one visit usually makes better use of the time than several visits, so tell us about everything that needs sealing. You will get one clear quote for the whole job.
Why Gillock clients choose us
- One-year guarantee on every job
- Tidy, careful work
- Over 20 years’ experience
- Arbo and Everbuild products
See what affects the cost and our reviews.
Frames and glazing around Gillock
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.
Around Gillock, as everywhere, sand mastic is only as good as the preparation behind it.
Gillock is about 9 miles south-east of Thurso, in Highland. Across the KW1 area, we can carry out sand mastic at your property. Our Highland coverage runs to 253 places, and Gillock is one of them.
We cover every part of KW1 for sand mastic. With the B874 close by, Gillock is simple for us to get to. Other places close to Gillock include Bower (3 miles north-east), Hastigrow (3 miles east), Watten (3 miles south-east), Halkirk (5 miles west) and Castletown (6 miles north). Remote and island addresses need a little more planning, so please mention your location when you send an email to info@mrmastic.co.uk.
What’s near Gillock
Gillock’s nearest station is Georgemas Junction station, roughly 3.8 miles west. Well-known places in the area include Braal Castle (5 miles west). Not far away are Loch Scarmclate.
What else we do in Gillock
Landlords, agents and businesses in Gillock
We regularly work with letting and managing agents. Send the address, what’s needed and the access arrangements and we will give you a quote.
Housing providers, facilities teams and property managers book us too in Gillock and across Highland. Several sites can go on one quote, and we’re fully insured for the work.
How the job changes by surface
Sash and case windows
A sash window’s box frame sits in the masonry opening. The gap round it is pointed with sand mastic.
Stone surrounds
Stone openings are rarely perfectly straight, so the gap is not the same all the way round. Sand mastic is shaped by hand to suit.
How we quote for sand mastic
We don’t publish a price list, because jobs vary so much. What we look at:
- When we can work, for business premises
- How easy the joints are to reach
- The size of the job
- The number of rooms or windows
A few things move the cost up or down: how much old sealant there is and how stubborn it is, whether mould needs treating, and whether the work is at height. We take all of that into account in your quote.
What we need to know
What to tell us when you ask for a quote:
- What’s wrong with the joints now
- The rough size of the job
- Access, such as stairs, a lift or height
- Pictures of the joints, sent by email
There’s no standard price list, as no two jobs are quite the same. Instead, your job gets its own clear quote. To get started, email us at info@mrmastic.co.uk.
What we do, step by step
At the end, we look at the finished work together and tell you how long to leave it. The visit itself usually takes a few hours for a single window, longer for several, depending on how much there is to do. Around Gillock, 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.
- We check the window surrounds and agree which joints need renewing.
- The loose and crumbling mastic is raked out and the joint cleaned.
- Large voids are packed out first, so the mastic is not too thick.
- The mastic is mixed, pressed into the joint by hand and shaped.
- The finish is dressed so it sits neatly against the stone or brick.
Getting ready for the visit
- Mention any tricky access
- On commercial sites, let us know about site rules
- Plan for the work area to be out of bounds to pets and children
How to get a quote
Need a quote? Please send an email to info@mrmastic.co.uk with a few details. We will explain what we’d do and give you a clear quote before any work starts.
Related advice
Gillock questions
Is Gillock within the area you cover?
Yes. Gillock is within the area we cover, which takes in towns, villages and rural addresses. Our work covers the whole of Scotland. Just mention lanes, gates or anything else about the route when you book.
Do you work for landlords with property near Georgemas Junction station?
Yes. We work for letting agents and landlords as well as householders. You can drop us a line at info@mrmastic.co.uk with the details for a clear quote.
Where are you based?
We are a Crawley-based firm, with over 20 years’ experience. We work across South East England, London and Scotland.
Are you insured?
Yes. We’re fully insured, with over 20 years’ experience in sealant work.
Which is right for my windows, sand mastic or modern sealant?
For period timber windows in stone or brick, sand mastic is often the better fit. Modern frames normally suit a flexible sealant, and we will explain why.
Is there any odour?
That depends on the sealant. Some smell for a while, some hardly at all, and any smell fades as they cure.
How long does the job take?
Typically it takes a few hours per window, depending on the condition of the joints. 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.
Looking after it afterwards
Looking after new joints is easy:
- Ask a joiner to look at soft timber first
- Find out about consent before window work on a listed home
- Renew mastic before redecorating the windows
- Keep sills and gutters clear so water drains away
Avoid sealing over the mastic with silicone. If you see a crack, ask us to take a look rather than patching it.
It’s best to renew mastic before painting the windows. Paint over cracked mastic only covers it up.