Angus · Scotland
Sand Mastic in Unthank
Sand mastic for Unthank, by sealant specialists with 20+ years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Mastic dropping out of the joint
- Draughty sash windows at the surround
- Modern sealant on a period surround
Sand mastic for homes and businesses in Unthank
Our applicators renew the sand mastic around sash and case windows and doors set in stone or brick. Out comes the old, loose mastic, and new mastic is applied and shaped by hand. We work on brick reveals, stone surrounds and period & listed homes, and common reasons people get in touch are gaps between timber frames and stone or brick and silicone on a period window that looks wrong.
Mastic can only go onto a dry joint, so outside work in Unthank depends on the weather, and longer journeys are planned in advance. Let us know about access to every frame, including any upstairs.
There’s a 12-month guarantee on every job.
- Place
- Unthank (DD9)
- Wider area
- Angus
- Cover
- One year on every job
- Quote
- A clear price before any work starts
- info@mrmastic.co.uk
- Updated
- 26 October 2026
Honest limits
We will not take on work that will not last, so here’s what sealant can’t put right:
- Decisions on consent for listed homes
- Sashes that need overhauling
- Broken panes
If in doubt, drop us a line at info@mrmastic.co.uk and we will say what we think before you book.
Where we work in Unthank
- Timber door frames
- Sash and case windows
- Stone surrounds
- Tenement windows
- Period & listed homes
- Brick reveals
Common problems we fix in Unthank
Some old mastic was never deep enough. Mastic that’s too thin cracks and drops out so we make sure the new mastic is the right thickness.
People generally contact us after spotting something like this:
- Crumbling sand mastic round a window
- Gaps between timber frames and stone or brick
- Mastic that needs renewing before redecorating
- A silicone bead on a sash window that spoils the look
Homes close to West and St Columba's Parish Church include some older properties, and the joint between an old wall and a newer frame is usually the first place rain gets in.
Questions to ask before you book
- Are they insured?
- Who does the work, and how experienced they are
- When the joint can take water or movement
- How long the guarantee is
Towns and villages near Unthank
Also in Unthank
Keeping the joints in good condition
How long the joints last depends on use and care. Here’s what we suggest:
- Have rotten timber repaired before new mastic goes in
- Ask us before painting near the mastic
- Make sure water runs off the sill
- Inspect the joints round the windows every year or so
Leave the new mastic unpainted, which is the traditional advice. Ask us before any decorating around it.
Good mastic helps keep the frame dry. Failed mastic lets water reach the timber, which can lead to rot.
How the job changes by surface
Stone surrounds
We take care not to mark the stone when the old mastic comes out.
Period and listed homes
Period homes look their best with traditional materials, and sand mastic is one of them.
Frames and glazing around Unthank
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 sound outside sealant is part of that.
If you look after a building such as Brechin High School, larger buildings have plenty of frames, and the mastic around each one ages.
Unthank is about 7 miles west of Montrose, in Angus. Homes, rented property, offices and hotels in Unthank is covered for sand mastic, old or new, large or small. The work is guaranteed for a year. Across Angus, we cover 40 places, and Unthank is one of them. There’s also a page for Dundee, roughly 22 miles from Unthank.
Here we cover the DD9 postcode area for sand mastic. You will find streets such as Trinity Road, Eddie Avenue and Cookston Road, and we cover them all. If you’re just outside Unthank, we cover Brechin (1 mile south), Little Brechin (2 miles north-west), Edzell (5 miles north), Edzell Woods (5 miles north) and Craigo (6 miles east). We also work in nearby towns such as Arbroath (13 miles south), Forfar (11 miles south-west), Kirriemuir (14 miles west), Letham (9 miles south-west) and Friockheim (7 miles south).
What’s near Unthank
We work in homes and buildings around City Road Bar and Brechin Public Park and the streets around them. Nearby you’ll also find Brechin Castle (0.9 miles south) and Brechin Town House Museum (0.7 miles south). Open spaces near Unthank include Caterthun and Duns Dish.
Your questions about sand mastic in Unthank
Can you do sand mastic in Unthank?
Yes, Unthank is within the area we cover. We work across all of Scotland. You can email us at info@mrmastic.co.uk and tell us what needs doing, and we’ll give you a clear quote.
Is there a guarantee on sand mastic in Unthank?
All our work, in Unthank and everywhere else, comes with a 12-month guarantee. We are also fully insured and ARBOMaster approved.
I’m a tenant. Can you help?
We can work for tenants, landlords or agents. Get your landlord’s agreement first.
Can you work on commercial sites?
Yes. We work in offices, washrooms, hotels and other commercial premises, as well as homes. Working times can be discussed when we quote.
Which products do you use?
We choose the sealant for the joint, not the other way round. Where it moves, gets wet or faces the weather makes a difference, and we’ll explain our choice.
Will there be a smell?
Some sealants have a smell while they cure. Opening a window helps.
What exactly is sand mastic?
It’s a mix of sand and a linseed-oil-based binder. It’s applied by hand and shaped to suit the surround.
Can landlords and businesses book you?
Yes. As well as homeowners, we work for landlords, agents, businesses and hotels in Unthank.
What happens if it’s left?
Gaps round a sash window let in rain and draughts. Left, water can reach the timber and the wall so renewing it early protects the window. Around Unthank, water from a failed joint in an older stone home can soak into timber and plaster.
Rather than a set price list, we price the job in front of us: how many joints, what’s in them now and how we reach them. You will know the price before we begin.
Why us?
- Sanitary silicone with an anti-fungal additive in wet areas
- A 12-month guarantee on all work
- Domestic, commercial and hotel work
- Trusted Arbo and Everbuild sealants
Read how sealant jobs are priced and customer reviews.
What we do, step by step
Once we are on site, we compare the joints with what we discussed. If we find something unexpected, we talk it through with you first. Most jobs then take a few hours for a single window, longer for several. In smaller Scottish places, parking is generally less of an issue than access and distance. Let us know how to find you and how to reach the joints, and the visit is planned around that.
- First, we look at the surrounds with you and agree what needs doing.
- We rake out the old mastic and clean the joint.
- Deep voids are packed so the mastic is the right thickness.
- The mastic is mixed, pressed into the joint by hand and shaped.
- The mastic is finished to sit tidily against the stone or brick.
How to prepare
- Mention any leaks or damp you’ve noticed
- Mention if the joints have been sealed before
- For indoor joints, keep the area dry beforehand if you can
How to get a quote
Need a quote? Please drop us a line at info@mrmastic.co.uk with a few details. You’ll know what we plan to do, and what it will cost, before any work begins.
Read more
Landlords, agents and businesses in Unthank
We also work for businesses, from offices to washrooms and kitchens. For commercial premises, we can talk through working times when we quote.
Housing providers, facilities teams and property managers book us too. Several sites can be quoted together, and we’re fully insured for the work.