Highland · Scotland
Balnacra Sand Mastic
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for homes and businesses in Balnacra and across Highland. ARBOMaster approved applicators, fully insured, with a 12-month guarantee.
- Modern sealant on a period surround
- Crumbling sand mastic round a window
- Draughts and rain around sash boxes
Can I do it myself?
If you do try it yourself, take your time over the preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it does not work out, we can still put it right.
Too much sealant is as bad as too little. A heavy bead looks messy and copes badly with movement, and getting the depth right matters as much as the look.
How we handle sand mastic in Balnacra
Burnt sand mastic is a traditional material that sits naturally against stone and brick. It’s a good fit for period properties where a modern sealant bead would stand out. If you are dealing with mastic round period door frames that has failed and modern sealant on a period surround, we can put it right, on brick reveals, period & listed homes and tenement windows alike.
Outdoor sealant needs a dry surface, so window work around Balnacra is planned around the weather. Let us know about access to every frame, including any upstairs.
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.
- Location
- Balnacra (IV54)
- Wider area
- Highland
- Cover
- 12 months on all our work
- Quotes
- A clear quote up front
- info@mrmastic.co.uk
- Page updated
- 26 October 2026
Also near Balnacra
What else we do in Balnacra
Why it’s worth doing now in Balnacra
Filling over old, loose mastic does not last. We remove the loose material first so the new mastic stays put. When the nearest tradesperson is a drive away, it’s tempting to leave a small leak, but water through a failed joint keeps working away until it’s fixed.
No two jobs are quite the same, so we quote each one individually. The number of joints, how easy they are to reach and the sealant needed all play a part, and we’ll explain the quote if you ask.
Why Balnacra customers choose us
- Arbo and Everbuild products
- We leave the area clean and tidy
- Rated 4.9 stars on Google
- Anti-fungal sanitary silicone in wet areas
Read how sealant jobs are priced and customer reviews.
Sand mastic in Balnacra: local notes
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.
Around Balnacra, as everywhere, sand mastic is only as good as the preparation behind it.
Balnacra is in Highland. Whether you’re in the middle of Balnacra or further out, we cover sand mastic for every kind of property, from flats and houses to offices and hotels. Balnacra is one of 253 towns and villages in Highland we cover for sand mastic.
Work in IV54 is quoted and booked the same way as anywhere else. With the A890 close by, Balnacra is simple for us to get to. Close by, we work in Srath Carran (3 miles south-west), Achintee (4 miles south-west), Lochcarron (6 miles south-west), Torridon (8 miles north-west) and Strome Ferry (10 miles south-west). Island and remote addresses take a little more planning, so tell us where you are when you ask for a quote.
What’s near Balnacra
For rail, the closest station is Achnashellach station, about 2.1 miles north-east. The countryside around Balnacra includes Loch Dùghaill.
What affects the cost of sand mastic
You’ll get a clear quote before any work starts. It’s based on:
- Whether the work is at height
- Whether there’s mould to deal with
- Whether old sealant or filler has to be cut out
- How much there is to do
Leaving a failed joint usually makes the job bigger, not smaller. If you are unsure, drop us a line at info@mrmastic.co.uk and we’ll give you an honest view and a quote.
Helping us quote
To help us quote quickly, let us know:
- Pictures of the joints, sent by email
- Any previous sealing or DIY work
- Where the job is, and your postcode
- Whether it’s a home or a business
Need a quote? Please email us at info@mrmastic.co.uk and tell us about the job. You’ll know what we plan to do, and what it will cost, before any work begins.
Balnacra: your questions answered
Is Balnacra 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 help a landlord with a rental near Achnashellach station?
Yes, landlords and agents are among the people we work for, and several properties can be quoted together. You can email us at info@mrmastic.co.uk with the details for a clear quote.
Can I paint the new mastic?
Traditional guidance is not to paint over sand mastic. If you’re redecorating the window, ask us first and we’ll talk you through it.
Is the work guaranteed?
Every job comes with our 12-month guarantee.
What is sand mastic?
It’s sand mixed with a linseed-oil-based binder, used between timber frames and stone or brick.
Do you work for hotels and businesses?
Yes, regularly. Larger jobs can be planned room by room or area by area to suit the site.
What sealant do you use?
It depends on the joint: anti-fungal sanitary silicone in wet areas, and other sealants where joints move or face the weather. We use products from Arbo and Everbuild.
What should I tell you?
Just the basics: where it is, what you’ve noticed and how we reach it. Then email us at info@mrmastic.co.uk.
Aftercare tips
Aftercare is simple, and it makes a real difference:
- Make sure water runs off the sill
- Ask us before painting near the mastic
- Sort the mastic before the decorators arrive
- Avoid patching sand mastic with silicone
Look at the mastic when you look over the windows. Small cracks are easier to deal with early.
Gaps round a sash box let in draughts and rain. Left, the gap tends to get bigger.
What happens on the day
On the day, we look over the joints with you first. We protect the surfaces around the joints before we start. The work generally takes anything from a few hours to a full day, depending on how many windows. Around Balnacra, distance and access matter more than parking. Let us know how to find you and how to reach the joints.
- We start by checking each surround and agreeing the joints to renew.
- We rake out the old mastic and clean the joint.
- Deep voids are packed so the mastic is the right thickness.
- We mix the sand mastic and apply it by hand, shaping it to the joint.
- The mastic is finished to sit tidily against the stone or brick.
Preparing for the visit
- Tell us about any previous sealing or DIY attempts
- For indoor joints, keep the area dry beforehand if you can
- Clear the area around the work
How to get a quote
For a quote, send an email to info@mrmastic.co.uk with the location and a short description of the problem. You will have a clear quote before any work starts.
Related advice
Honest limits
Sealant isn’t the answer to every problem, and we’d rather say so up front. It won’t solve:
- Decisions on consent for listed homes
- Rotten sashes, sills or window boxes (a joiner’s job)
- Putty and glazing repairs
If you are not sure, just email us at info@mrmastic.co.uk and we will give you a straight answer before booking.
Surfaces we seal
- Tenement windows
- Sash and case windows
- Brick reveals
- Stone surrounds
- Period & listed homes
- Timber door frames
When to call us in Balnacra
Paint, silicone or cement used over old mastic causes problems. They don’t move with the timber and we normally remove them.
These are the problems we’re asked about most:
- Window mastic to renew ahead of painting
- Gaps round a timber door in stone or brick
- Weathered mastic on the most exposed windows
- Patchy fillers round a sash window
Letting a property close to Achnashellach station? Then older sash windows in a rental need their mastic kept sound to keep the weather out.
Comparing quotes
- How long to leave it before use
- What preparation is included
- What guarantee comes with the work
- Who turns up on the day