Aberdeenshire · Scotland
Sand mastic for sash & case windows in St Combs, Aberdeenshire
Problem with your window and door surrounds in St Combs? We cut out the old, prepare the joints and apply the right sealant, with a one-year guarantee.
- Patchy fillers round a sash window
- Open joints round the window box
- Mastic that needs renewing before redecorating
What sealant work cannot fix
To be straight with you, some problems need a different trade:
- Cracked or broken glass
- Sash cords, weights and draught-proofing of the sashes
- Whether work needs listed building consent
Not sure which it is? You can send an email to info@mrmastic.co.uk and we will tell you honestly.
What we seal
- Tenement windows
- Brick reveals
- Stone surrounds
- Period & listed homes
- Sash and case windows
- Timber door frames
About our sand mastic in St Combs
Sand mastic skins over fairly quickly but full hardening takes longer. Traditionally, sand mastic is left unpainted, so ask us before you decorate. Typical jobs include gaps where the frame meets the masonry and cement or filler used on old window joints that has cracked, across tenement windows, period & listed homes and sash and case windows.
Many older Scottish homes still have timber windows set into stone walls. The sealant has to suit the stone, which rules out acetoxy silicones that can mark or attack it.
The work is guaranteed for twelve months. If something isn’t right with it in that time, tell us and we’ll put it right.
- Place
- St Combs (AB43)
- Region
- Aberdeenshire
- Cover
- 12 months on all our work
- Quote
- Quoted before any work starts
- info@mrmastic.co.uk
- Updated
- 26 October 2026
When to call us in St Combs
Previous repairs in cement or silicone often trap water or crack away. They do not suit the joint, and they normally need raking out.
The most common problems we see are:
- Gaps round a timber door in stone or brick
- Silicone on a period window that looks wrong
- Gaps where the frame meets the masonry
- Draughts and rain around sash boxes
For an older house near a landmark such as St Combs, frames set in older brick or stone need a sealant that suits the wall as well as the frame.
Questions to ask before booking
- Which colour the sealant will be
- How the surfaces are prepared before sealing
- Is VAT in the price?
- Which sealant they’ll use, and why
Your questions about sand mastic in St Combs
Does the coastal weather in St Combs affect outside sealant?
Near the coast, wind-driven rain and, nearer the shore, salt air make outside sealant work harder. Choosing the right sealant for the frame and wall, laid at the right depth, helps it last.
Is St Combs within the area you cover?
Yes, we do. Our work covers the whole of Scotland, and smaller places are part of that. The journey is planned ahead, so it helps to know about access.
Where do you work from?
We are based in Crawley, West Sussex, and we cover South East England, London and all of Scotland.
Can old silicone round a sash window be swapped for sand mastic?
Yes, it’s a common request. All the old silicone is removed first so the mastic can sit properly.
Is consent needed for window work on a listed home?
It’s best to ask your local planning authority first. Sand mastic is often favoured as like for like, but they decide.
Can sand mastic be painted?
It’s traditionally left unpainted, which is what traditional guidance recommends. Talk to us before any painting near it.
Will you leave a mess?
No. The area is protected while we work and cleaned up afterwards.
Are you insured?
Yes. We are fully insured.
Landlords, agents and businesses in St Combs
Letting agents often deal with us directly. Send the address, what’s needed and the access arrangements.
From a single let to a portfolio, the work is the same standard: the old material taken out, careful preparation and a 12-month guarantee.
What happens if it’s left?
If you’re redecorating, renew the mastic first. Paint over cracked mastic will not stop the gaps and traditional guidance is to leave the new mastic unpainted. Exposed walls in smaller Scottish places take a lot of wind and rain, and once water gets behind a failed joint, damp in stone or harled walls is slow to dry out.
Every job is a little different, so we quote each one individually. Size, access and the product the joint needs all play a part.
Why St Combs clients choose us
- Domestic, commercial and hotel work
- Neat joints and a tidy finish
- Fully insured
- More than 20 years in sealant work
See what affects the cost or our reviews.
How to look after the new joints
Looking after new joints is easy, and it makes a real difference:
- Keep sills and gutters clear so water drains away
- Have rotten timber repaired before new mastic goes in
- Plan mastic work ahead of painting
- Leave the new mastic unpainted
Do not touch or press the mastic while it hardens. It skins over quickly, but takes longer to harden fully.
Once mastic starts to crumble, rain gets in. It can soak into the frame and the surrounding masonry, so renewing it early is worth it.
Can I do it myself?
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. All the old material has to come out first.
A careful DIYer can reseal a simple joint, such as a straightforward joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
How the visit works
Every visit runs the same way: we check the joints, protect the area around them, carry out the job and clear up. Most jobs take a few hours for a single window, longer for several. Somewhere like St Combs may be a longer drive, and the journey is planned ahead. Mention tracks, gates, ferries or anything else about the route.
- First we agree which joints need doing.
- We remove the old, loose mastic.
- We pack any deep voids first.
- We apply the mastic by hand and shape it.
- We dress the finish so it sits neatly against the masonry.
Before we arrive
- Tell us about any water getting in
- Clear items away from the joints we are working on
- Tell us about access, such as stairs, a lift or high-level joints
Get a quote
If you’re in St Combs and need sand mastic, send an email to info@mrmastic.co.uk. A short description of the job and where it is helps us quote, and we will agree the price before any work begins.
Advice
Towns and villages near St Combs
More services for St Combs
St Combs homes and the weather
St Combs is close to the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. Both are hard on the mastic around older windows and doors, which can dry out and crack sooner where a building faces 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.
Around St Combs, as everywhere, sand mastic is only as good as the preparation behind it.
St Combs is about 4 miles south-east of Fraserburgh, in Aberdeenshire. From the centre of St Combs to the outskirts, sand mastic is available for homes and businesses alike. Across Aberdeenshire, we cover 161 places, St Combs among them. Our Aberdeen page covers work nearby (36 miles or so).
Jobs for sand mastic in AB43 is quoted and booked the same way as anywhere else. That includes homes and businesses on High Street, West Street and Charles Street and the roads around them. Other places close to St Combs include Inverallochy (1 mile north-west), Crimond (4 miles south), Fraserburgh (4 miles north-west), Keyhead (5 miles south) and Broadsea (5 miles north-west). Within a short drive, we also cover Peterhead (11 miles south), Roanheads (11 miles south-east), Clerkhill (12 miles south), Port Henry (12 miles south-east), Mintlaw (10 miles south) and Boddam (14 miles south).
Local landmarks in St Combs
Other landmarks nearby include Inverallochy Castle (0.8 miles west) and Fraserburgh Hospital (4.5 miles north-west). Not far away are Loch of Strathbeg.