Highland · Scotland
Scarfskerry Sand Mastic
Sand mastic in Scarfskerry from a team with over 20 years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Draughty sash windows at the surround
- A silicone bead on a sash window that spoils the look
- Old cement repairs round a window that have failed
Sand mastic for homes and businesses in Scarfskerry
Burnt sand mastic is a traditional material blends with stone and brick surrounds. It’s a good fit for period properties, where modern sealant can look out of place. Common call-outs are for mastic dropping out of the joint and old cement repairs round a window that have failed, across sash and case windows, stone surrounds and brick reveals.
Many older Scottish homes still have timber windows set into stone walls. Those suit a traditional sand mastic or a neutral-cure sealant, not an acetoxy silicone that can attack some stone.
Big or small, you get the same 12-month guarantee in Scarfskerry and across Highland.
- Where
- Scarfskerry (KW14)
- Wider area
- Highland
- Cover
- One year on every job
- Quote
- Quoted before any work starts
- info@mrmastic.co.uk
- Last updated
- 26 October 2026
Should I try it myself first?
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, then guaranteed for a year.
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.
For landlords and businesses
If you manage several properties in or around Scarfskerry, several properties can go on one quote. Just tell us the addresses and what each one needs, and pictures by email help.
Housing providers, facilities teams and property managers book us too in Scarfskerry and across Highland. We can quote a run of properties together, and we are fully insured for the work.
Sand mastic in Scarfskerry: local notes
Scarfskerry is within about 1 mile of the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. 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.
Historic houses such as Castle of Mey, about 1.9 miles east, show how far back building around Scarfskerry goes.
Scarfskerry is about 10 miles east of Thurso, in Highland. From the centre of Scarfskerry to the outskirts, we cover sand mastic for every kind of property, from flats and houses to offices and hotels. 253 places in Highland are on our list, large and small.
Jobs for sand mastic in KW14 is quoted and booked the same way as anywhere else. Close by, we work in Rattar (1 mile south-east), Dunnet (3 miles south-west), Brough (3 miles west), Castletown (5 miles south-west) and Canisbay (6 miles east). If you’re somewhere remote, the job takes a little more planning.
What’s near Scarfskerry
Other landmarks nearby include Castle of Mey (1.9 miles east) and Westside Croft (3.1 miles south-west). Open spaces near Scarfskerry include Loch of Mey.
Scarfskerry questions
Is sand mastic in a coastal place like Scarfskerry any different?
Near the coast, wind-driven rain and, nearer the shore, salt air make outside sealant work harder. The right product, a clean joint and the right depth all help it cope.
Do you cover smaller places like Scarfskerry?
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.
Is it worth trying it myself?
You can, for simple jobs. The key is preparation: remove all the old material and work on a clean, dry joint. We can always put it right if it fails.
Do I need permission for sand mastic on a listed building?
Checking first is sensible. Your local planning authority can say if consent is needed for listed or conservation-area properties.
Can new sealant go over the old?
No. New silicone will not bond to old silicone, and it traps any mould or water underneath. We remove it all first.
How long does sand mastic take to harden?
A skin forms quite soon, but full hardening takes longer. We will tell you what to expect for your job.
Can you replace silicone on a period window with sand mastic?
Often, yes. Once the silicone is out and the joint prepared we point it with sand mastic.
How long does the job take?
That depends on the amount of work, but as a guide it takes a few hours for a single window, longer for several. We’ll give you a better idea when we quote.
Surface by surface
Stone surrounds
Stone openings are rarely perfectly straight, so the joint varies in width. Sand mastic is shaped by hand to suit.
Timber door frames
A neat sand mastic joint round a front door suits a period home.
What affects the quote in Scarfskerry
The quote reflects the job in front of us. We take into account:
- The type of sealant required
- Working hours on commercial sites
- The number of rooms or windows
- Any mould that needs treating
Leaving a failed joint generally makes the job bigger, not smaller, because water and mould keep working on it. If you are not sure whether it needs doing, send an email to info@mrmastic.co.uk and we will give you an honest view and a quote.
What to tell us for a quote
When you contact us, it’s useful to know:
- If someone has resealed it before
- Whether it’s a home or a business
- How many joints, rooms or windows are involved
- What the problem is, such as mould, gaps, leaks or cracking
The more we know about the job, the more useful the quote. Tell us where the job is, what’s wrong and how much there is, and add photos by email if you can.
How it works
Our applicators work methodically: protection first, then preparation, sealing and a tidy-up. For most jobs that takes anything from a few hours to a full day, depending on how many windows and we leave things clean and tidy. In smaller Scottish places, parking is normally less of an issue than access and distance. Tell us how to find the property and how to reach the work, and the visit is planned around that.
- We start by checking each surround and agreeing the joints to renew.
- 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.
- Sand mastic is mixed and applied by hand, then shaped to the joint.
- We dress the surface so it sits neatly against the masonry.
How to prepare
- Tell us about any previous sealing or DIY attempts
- Where the joints are inside, avoid wetting them before we arrive
- Clear items away from the joints we are working on
Get a quote
For a quote, drop us a line at info@mrmastic.co.uk with the location and a short description of the problem. We will give you a clear quote before any work starts.
Related advice
What happens if it’s left?
If you are redecorating, renew the mastic first. Paint over cracked mastic will not stop the gaps and traditional guidance is to leave the new mastic unpainted. 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.
Doing several joints on one visit normally makes better use of the time than several visits, so it’s worth mentioning everything you’d like done. You will get one clear quote for the whole job.
What you get with us
- Domestic, commercial and hotel work
- Any old sealant cut out fully, not covered over
- Sanitary silicone with an anti-fungal additive in wet areas
- ARBOMaster approved applicator
See our cost guide or our reviews.
Signs you need sand mastic in Scarfskerry
Water gets into small cracks in the mastic and loosens it further. Exposed elevations usually fail first.
Keep an eye out for any of the following:
- Cracked mastic round a front door frame
- Old sand mastic that has cracked, crumbled or fallen out
- Weathered mastic on the most exposed windows
- Draughts and rain around sash boxes
Around Scarfskerry, as everywhere, sand mastic is only as good as the preparation behind it.
Questions to ask before you book
- Whether all the old sealant comes out first
- Who does the work, and how experienced they are
- What guarantee comes with the work
- Whether you can choose the colour