Orkney Islands · Scotland
Sand mastic for sash & case windows in Blackhill, Orkney Islands
Sand mastic across Blackhill and nearby, with old sealant always removed completely and a 12-month guarantee.
- Weathered mastic on the most exposed windows
- Gaps where the frame meets the masonry
- Gaps round a timber door in stone or brick
Sand mastic for homes and businesses in Blackhill
Sand mastic suits most period window surrounds. On modern frames we’d normally use a flexible sealant, and we will talk through which suits your home. If you’re dealing with modern sealant on a period surround and mastic round period door frames that has failed, we can help.
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.
The work is covered for a year after we finish. If there’s a problem with it, please email us at info@mrmastic.co.uk.
- Where
- Blackhill (KW15)
- Wider area
- Orkney Islands
- Guarantee
- 12 months on all our work
- Quote
- A clear price before any work starts
- info@mrmastic.co.uk
- Updated
- 26 October 2026
FAQs for Blackhill
Is sand mastic in a coastal place like Blackhill any different?
Coastal weather is harder on outside sealant: there’s more wind-driven rain and, closer to the shore, salt in the air. The right product, a clean joint and the right depth all help it cope.
Will you come out to Blackhill?
Yes. Blackhill is within the area we cover, which takes in towns, villages and rural addresses. We work across all of Scotland, including the islands, where work is planned around ferry crossings. Just mention lanes, gates or anything else about the route when you book.
What should I tell you?
The location, the problem and the rough size of the job. Photos by email help too.
Do I need permission for sand mastic on a listed building?
Checking first is sensible. Ask your local planning authority whether consent is needed for listed or conservation-area properties.
Do the sealants smell?
There can be a smell while the sealant cures, but it fades. Opening a window helps.
I rent my home. Can I book you?
Yes, though it’s best to check with your landlord first. Many landlords are glad to have it sorted.
Can I choose the sealant colour?
Usually, yes. White, clear and grey are common, and other colours are available, and we’ll agree it with you first.
When will the new mastic be hard?
It forms a skin fairly soon and it hardens fully over a longer time. Timing depends on the weather and the joint.
What else we do in Blackhill
Common problems we fix in Blackhill
Most of it is simply age. Sand mastic is a maintenance item like any pointing, depending on exposure and upkeep.
If you can see any of these, it’s time to have the joints looked at:
- Mastic that needs renewing before redecorating
- Wind and rain getting in round a sash window
- Silicone on a period window that looks wrong
- Mastic round period door frames that has failed
In and around Blackhill, as anywhere, good sand mastic starts with a clean, dry, properly prepared joint.
What to look for in a quote
- How long to leave it before use
- Whether you can choose the colour
- Whether they seal over old material or remove it
- The length of the guarantee
Landlords, agents and businesses in Blackhill
We work for landlords and letting agents as well as householders. Sealant work between tenants is a simple way to keep a property in good order before the next move-in.
Whether it’s one flat or a portfolio, you get the same standard of work: the old material taken out, careful preparation and a 12-month guarantee.
What happens on the day
When we arrive, we start by going over the job with you, so there are no surprises. Surfaces next to the work are protected before any work begins. Most jobs take anything from a few hours to a full day, depending on how many windows. Outdoor work around Blackhill depends on the weather, as sealant needs a dry surface, so external jobs may need to move if the day turns wet. Indoor work goes ahead whatever the weather.
- Each surround is checked first.
- The joint is raked out and cleaned.
- We fill deep gaps so the new mastic is not too thick.
- New sand mastic is applied and shaped by hand.
- We finish the mastic to a tidy line.
Before we arrive
- For business premises, tell us about site rules or sign-in
- Clear items away from the joints we’re working on
- Mention any leaks or damp you’ve noticed
How to get a quote
For a quote, email us at info@mrmastic.co.uk and tell us where the job is and what the problem looks like. You’ll have a clear quote before work begins.
Advice
Keeping the joints in good condition
Good habits help new joints last longer. Our tips:
- Inspect the joints round the windows every year or so
- Don’t paint over the new mastic
- Keep modern sealant off the mastic
- Avoid heavy scraping on the mastic joint
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. The longer it’s left, the more the joint opens as more mastic falls out.
Blackhill homes and the weather
Blackhill 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. Island weather, with its wind and salt spray, is tough on the mastic around older windows and doors.
Whether the job is in Blackhill itself or nearby, the right material for each joint matters as much as a neat finish.
Blackhill is about 1 mile west of Kirkwall, in the Orkney Islands. Homes, rented property, offices and hotels in Blackhill can book us for sand mastic, old or new, large or small. The work is guaranteed for a year. Our the Orkney Islands coverage runs to 51 places, Blackhill among them.
Work in KW15 is quoted and booked the same way as anywhere else. Nearby, we also carry out sand mastic in Kirkwall (1 mile east), Greenigoe (2 miles south), Grimbister (4 miles west), Finstown (5 miles west) and Heddle (5 miles west). Island and remote addresses take a little more planning, so tell us where you are when you ask for a quote.
Near you in Blackhill
We work in homes and buildings around Orkney Library and Archive and the streets around them. Well-known places in the area include Balfour Hospital (1.2 miles south-east) and Orkney Museum (1.2 miles east). Open spaces near Blackhill include Lochs of Griffyelt and Wideford Hill.
Surface by surface
Stone surrounds
Stone openings are rarely perfectly straight, so the gap isn’t the same all the way round. Sand mastic is shaped by hand to suit.
Brick reveals
Brick reveals round timber windows are often pointed with sand mastic. It gives a traditional finish.
Why act early in Blackhill
Gaps round a sash window let in rain and draughts. Left, water can reach the timber and the wall so renewing it early protects the window. Exposed walls in smaller Scottish places take a lot of wind and rain, and damp in stone or harled walls takes a long time to dry once water gets behind a joint.
Leaving a failed joint usually makes the job bigger, not smaller, because water and mould keep working on it. If you are unsure, drop us a line at info@mrmastic.co.uk for an honest opinion and a quote.
Why Blackhill clients choose us
- Homes, businesses and hotels
- 20+ years of sealant experience
- We leave the area clean and tidy
- Any old sealant cut out fully, not covered over
Take a look at how sealant jobs are priced or customer reviews.
What we can’t put right
To be straight with you, there are a few things sealant won’t fix:
- Broken panes
- Damaged stone surrounds
- Sashes that need overhauling
If in doubt, drop us a line at info@mrmastic.co.uk and we’ll say what we think before booking.
Joints and surfaces we work on
- Sash and case windows
- Tenement windows
- Timber door frames
- Period & listed homes
- Brick reveals
- Stone surrounds