Highland · Scotland
Strathy Sand Mastic
Sand mastic in Strathy from a team with over 20 years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Mastic round period door frames that has failed
- Draughty sash windows at the surround
- Window mastic to renew ahead of painting
Why deal with it now?
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.
A failed joint rarely gets cheaper to fix by waiting, as water and mould keep getting in. If you are unsure, send an email to info@mrmastic.co.uk for an honest opinion and a quote.
Why choose Mr Mastic in Strathy
- Anti-fungal silicone where joints get wet
- Domestic, commercial and hotel work
- Tidy, careful work
- 180+ five-star Google reviews
Sand mastic in Strathy, done properly
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 window mastic to renew ahead of painting and draughty sash windows at the surround, across stone surrounds, sash and case windows and timber door frames.
Outdoor sealant needs a dry surface, so window work around Strathy is planned around the weather, and longer journeys are planned in advance. Let us know about access to every frame, including any upstairs.
We guarantee the work for a year. If there’s a problem with our work within the year, let us know and we will sort it.
- Location
- Strathy (KW14)
- Wider area
- Highland
- Guarantee
- One year on every job
- Quotes
- A clear quote up front
- info@mrmastic.co.uk
- Page updated
- 26 October 2026
What we’re called out for in Strathy
Timber swells and shrinks with the weather. The movement cracks the mastic over time.
The most common problems we see are:
- Mastic worn away on windows facing the weather
- Crumbling sand mastic round a window
- Gaps between timber frames and stone or brick
- Window mastic to renew ahead of painting
In and around Strathy, as anywhere, good sand mastic starts with a clean, dry, properly prepared joint.
Questions to ask before booking
- Whether they seal over old material or remove it
- What product goes in the joint
- Are they insured?
- What guarantee comes with the work
Towns and villages near Strathy
More services for Strathy
How it works
You do not need to clear the whole room or building, only the area right around the joints. We protect the rest, and the job takes anything from a few hours to a full day, depending on how many windows in most cases. Somewhere like Strathy 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.
- First, we look at the surrounds with you and agree what needs doing.
- Old, loose 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
- Try not to wet indoor joints just before the visit
- Move anything stored near the joints
- Let us know about parking restrictions
How to get a quote
If you’re in Strathy and need sand mastic, send an email to info@mrmastic.co.uk. Tell us what the problem is and where, and we will agree the price before any work begins.
Read more
Surface by surface
Period and listed homes
Many older homes were built with sand mastic round the windows. On listed buildings, check with your planning authority first.
Sash and case windows
The box of a sash and case window sits in the stone or brick opening. Sand mastic seals the joint round it.
Windows and doors in Strathy
Strathy 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. Both are hard on the mastic around older windows and doors, which can dry out and crack sooner where a building faces the weather. Under the Repairing Standard, private landlords in Scotland have to keep homes wind and watertight, and failed outside joints work against that.
Whether the job is in Strathy itself or nearby, the right material for each joint matters as much as a neat finish.
Strathy is about 17 miles west of Thurso, in Highland. Whether you’re in the middle of Strathy or further out, we cover sand mastic for every kind of property, from flats and houses to offices and hotels. Strathy is one of 253 places in Highland where we work.
Jobs for sand mastic in KW14 is quoted and booked the same way as anywhere else. Other places close to Strathy include Portskerra (3 miles east), Melvich (3 miles east), Reay (8 miles east), Am Blàran Odhar (8 miles west) and Forss (13 miles east). If you are somewhere remote, a little more planning is needed, so let us know when you get in touch.
Local landmarks in Strathy
Green spaces nearby include Lochan Ealach.
Work for landlords, hotels and businesses
A neglected joint can let water reach the structure, which is a bigger problem in a rented property. Keeping joints in good order is simple maintenance.
Housing providers, facilities teams and property managers book us too. Several sites can be quoted together, and we are fully insured.
What we can’t put right
Some problems need a builder, plumber or other trade rather than us:
- Decayed frames that need repair
- Sash cords, weights and draught-proofing of the sashes
- Crumbling stone or brickwork round the window
If you’re not sure, just email us at info@mrmastic.co.uk and we’ll give you a straight answer before you book.
Joints and surfaces we work on
- Timber door frames
- Stone surrounds
- Tenement windows
- Period & listed homes
- Brick reveals
- Sash and case windows
Common questions in Strathy
Do you cover smaller places like Strathy?
Yes, smaller places are covered as well as towns. We work across all of Scotland. Let us know about access, parking and anything unusual about getting there when you book.
Does the coastal weather in Strathy affect outside sealant?
Coastal weather is harder on outside sealant: there’s more wind-driven rain and, closer to the shore, salt in the air. Choosing the right sealant for the frame and wall, laid at the right depth, helps it last.
How long will you be here?
That depends on the amount of work, but most jobs take anything from a few hours to a full day, depending on how many windows. We’ll give you a better idea when we quote.
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.
Is the work guaranteed?
Our 12-month guarantee applies to all our work.
Do you do commercial work?
Yes. Commercial and hotel work is a large part of what we do. Working times can be discussed when we quote.
Can I paint the new mastic?
The usual advice is to leave sand mastic unpainted. If you’re redecorating the window, ask us first and we’ll advise.
Where are you based?
Mr Mastic is based in Crawley. We cover Strathy and the rest of Highland.
Keeping the joints in good condition
Aftercare is simple:
- Renew mastic before redecorating the windows
- Avoid patching sand mastic with silicone
- Check with your local planning authority if your home is listed
- Leave the new mastic unpainted
Avoid painting over the new mastic, which is the traditional advice. Ask us before any decorating around it.
Once mastic starts to crumble, rain gets in. That water can reach the timber frame and the wall so early renewal protects both.