Argyll and Bute · Scotland
Crossapol Sand Mastic
We cover Crossapol for traditional burnt sand mastic around sash and case windows and doors in stone and brick. Old sealant removed completely, joints prepared properly.
- Open joints round the window box
- Crumbling sand mastic round a window
- Draughty sash windows at the surround
The process
Once we are on site, we check the joints match what you told us. If anything is different, we explain it before carrying on. After that, the work takes anything from a few hours to a full day, depending on how many windows. Somewhere like Crossapol may be a longer drive, and the journey is planned ahead. Tell us about tracks, gates, a ferry crossing or anything unusual about getting there.
- Each surround is checked first.
- We rake out the old mastic and clean the joint.
- Large voids are packed out.
- We point the joint with sand mastic by hand.
- We finish the mastic to a tidy line.
How to prepare
- Clear the area around the work
- Let us know about parking restrictions
- Mention any tricky access
Get a quote
There’s no standard price list. Instead, we give you a clear price for your job. To arrange one, drop us a line at info@mrmastic.co.uk.
Read more
Sand mastic for homes and businesses in Crossapol
Old sand mastic cracks, crumbles and falls out over time and gaps open up round the frame. We rake it out and renew it and tidies the surround. If you’re dealing with old cement repairs round a window that have failed and mastic worn away on windows facing the weather, we can put it right, whatever the surface.
Across smaller places in Scotland, homes range from stone and harled cottages to newer houses, many standing in the open. Exposed frames and sills take the full force of wind-driven rain.
The work is guaranteed for twelve months. If something is not right with it in that time, tell us and we will put it right.
- Location
- Crossapol (PA77)
- Wider area
- Argyll and Bute
- Guarantee
- A year, on every job
- Price
- Quoted before any work starts
- info@mrmastic.co.uk
- Page updated
- 26 October 2026
What happens if it’s left?
Silicone might seem the quicker option, but on period stone or brick it often looks out of place. Sand mastic suits the building and blends with the stone or brick. 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.
Combining jobs into one visit is usually more efficient than separate visits, so it’s worth mentioning everything you’d like done. We will send you a clear quote for the lot.
Why us?
- Anti-fungal sanitary silicone in wet areas
- We’re fully insured
- 180+ five-star Google reviews
- Any old sealant cut out fully, not covered over
Read how sealant jobs are priced and customer reviews.
Common questions in Crossapol
Do you cover smaller places like Crossapol?
Yes, Crossapol is covered. Our work covers the whole of Scotland, and smaller places are part of that. Longer journeys are simply planned in advance.
Is sand mastic in a coastal place like Crossapol any different?
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.
Where is Mr Mastic based?
We’re based in Crawley, and we work across South East England, London and Scotland.
What exactly is sand mastic?
It’s the traditional filler for the joint round timber windows and doors. It combines sand with a linseed-oil-based binder.
Will you leave a mess?
We keep the work tidy. Nearby surfaces are protected.
What do you put in the joint?
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.
How long does sand mastic take to go off?
Not right away. It skins first and hardens fully later and we’ll give you an idea for your job.
Is it possible to paint over sand mastic?
Traditional guidance is not to paint over sand mastic. If you’re redecorating the window, ask us first and we will advise.
Also near Crossapol
More services for Crossapol
When it isn’t the sealant
We’ll always be straight with you, so here’s what new sealant won’t do:
- Decayed frames that need repair
- Masonry that needs repairing
- Cracked or broken glass
If in doubt, email us at info@mrmastic.co.uk and we will say what we think before you book.
Where we work in Crossapol
- Period & listed homes
- Stone surrounds
- Tenement windows
- Timber door frames
- Sash and case windows
- Brick reveals
Looking after it afterwards
To keep the joints looking good and working properly:
- Find out about consent before window work on a listed home
- Make sure water runs off the sill
- Leave the new mastic unpainted
- Get any rot dealt with first
Avoid sealing over the mastic with silicone. If you see a crack, ask us to take a look before trying a quick fix.
Good mastic helps keep the frame dry. Failed mastic lets water reach the timber, which can lead to rot.
Landlord and commercial work in Crossapol
Failed sealant is one of the commonest items on a check-out report. We can quote for more than one property at once.
We regularly work with letting and managing agents. Tell us the address, the job and how access works and we’ll quote.
Common problems we fix in Crossapol
Rain on the window surround works into any crack and pushes it out. Windows facing the weather tend to go first.
The most common problems we see are:
- Gaps between timber frames and stone or brick
- Old sand mastic that has cracked, crumbled or fallen out
- Old cement repairs round a window that have failed
- Gaps round a timber door in stone or brick
Whether the job is in Crossapol itself or nearby, the right material for each joint matters as much as a neat finish.
What to look for in a quote
- What the cure time is
- What product goes in the joint
- Is VAT in the price?
- How the surfaces are prepared before sealing
DIY sealant or a professional job?
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.
What a professional job adds is preparation and the right product. Joints are cleaned back to sound surfaces and dried, and the sealant is chosen for how the joint moves and where it is.
What sand mastic looks like in Crossapol
Crossapol is within about 1 mile of the coast, and homes near the sea take more wind-driven rain, with salt in the air closer to the shore. That’s hard on the mastic around older windows and doors, especially on the side facing the sea. 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 Crossapol, as everywhere, sand mastic is only as good as the preparation behind it.
Crossapol is in Argyll and Bute. Anywhere in PA77, we cover sand mastic for homes and businesses. Our Argyll and Bute coverage runs to 118 places, Crossapol among them.
We work across PA77 for sand mastic and the streets around it. If you need sand mastic at a property on Sruthan Terrace and Reef Terrace or a nearby road, we can help. Being close to the B8065, Crossapol is easy for our applicators to reach. Other places close to Crossapol include Balemartine (2 miles south-west), Balephuil (3 miles south-west), Scarinish (3 miles east), Arinagour (16 miles north-east) and Baile Mòr (21 miles south-east). If you’re somewhere remote, the job takes a little more planning, so let us know when you get in touch.
Landmarks near Crossapol
A little further out are An Iodhlann (2.7 miles east). Open spaces near Crossapol include Loch an Eilein and Beinn Ghott.