Orkney Islands · Scotland
Sand mastic for sash & case windows in Finstown, Orkney Islands
Sand mastic for Finstown, by sealant specialists with 20+ years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Patchy fillers round a sash window
- Weathered mastic on the most exposed windows
- Draughty sash windows at the surround
Can I do it myself?
If you’ve already had a go yourself, that is fine. We remove it and do the joint properly, so just mention it when you contact us.
Overfilling a joint is a classic DIY mistake. A heavy bead looks messy and copes badly with movement, and getting the depth right matters as much as the look.
About our sand mastic in Finstown
If your home is listed or in a conservation area, check with your local planning authority whether consent is needed for work to windows. Sand mastic is often favoured as a like-for-like material. Typical jobs include cement or filler used on old window joints that has cracked and crumbling sand mastic round a window, on stone surrounds, tenement windows and timber door frames.
Outdoor sealant needs a dry surface, so window work around Finstown is planned around the weather. Let us know about access to every frame, including any upstairs.
The work is covered for a year after we finish. If there’s a problem with it, please drop us a line at info@mrmastic.co.uk.
- Place
- Finstown (KW17)
- Wider area
- Orkney Islands
- Guarantee
- One year on every job
- Quotes
- A clear price before any work starts
- info@mrmastic.co.uk
- Last updated
- 26 October 2026
What we do, step by step
You don’t need to clear the whole room or building before we come, just the space around the work. We protect the rest, and the work takes a few hours per window, depending on the condition of the joints in most cases. In smaller Scottish places, parking is usually less of an issue than access and distance. Let us know how to find you and how to reach the joints.
- First, we look at the surrounds with you and agree what needs doing.
- 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.
- The mastic is finished to sit tidily against the stone or brick.
How to prepare
- Try not to wet indoor joints just before the visit
- For business premises, tell us about site rules or sign-in
- Mention any leaks or damp you’ve noticed
Get a quote
For a quick quote, get us on the phone, or send an email if you’d rather. Tell us about the joints that need doing and we will talk you through the work.
Advice
Nearby places to Finstown
More services for Finstown
How to look after the new joints
A little care helps the new joints last. We recommend:
- Look over the window mastic once a year
- Keep sills and gutters clear so water drains away
- Get any rot dealt with first
- Avoid heavy scraping on the mastic joint
Leave the new mastic alone while it firms up. It forms a skin fairly soon but needs longer to fully harden.
Good mastic helps keep the frame dry. Failed mastic lets water reach the timber and timber that stays wet can rot.
Questions from Finstown
Can you do sand mastic in Finstown?
Yes, Finstown is within the area we cover. Our work covers the whole of Scotland. You can email us at info@mrmastic.co.uk and let us know what needs doing.
Does living near the coast affect sand mastic in Finstown?
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.
Is consent needed for window work on a listed home?
Your local planning authority is the one to ask. They’ll tell you if consent is needed.
Do you offer different sealant colours?
Usually, yes. Sealants come in white, clear, grey and other colours, and we agree the colour with you before work begins.
Do you do commercial work?
Yes. Hotels, offices and other businesses use us and we are fully insured.
Where is Mr Mastic based?
We’re a Crawley-based firm. We work across South East England, London and Scotland.
Do you guarantee sand mastic work?
You get our one-year guarantee to all our work.
Can sand mastic be painted?
It’s traditionally left unpainted, which is what traditional guidance recommends. Talk to us before any painting near it.
Signs you need sand mastic in Finstown
Some old mastic was never deep enough. A thin layer does not hold well so we make sure the new mastic is the right thickness.
Look out for any of the following:
- Window mastic to renew ahead of painting
- Gaps between timber frames and stone or brick
- A silicone bead on a sash window that spoils the look
- Draughts and rain around sash boxes
In and around Finstown, as anywhere, good sand mastic starts with a clean, dry, properly prepared joint.
What your quote should include
- When the joint can take water or movement
- What happens if the job turns out different
- Is VAT in the price?
- What guarantee comes with the work
Finstown homes and the weather
Finstown is close to the coast, and homes near the sea take more wind-driven rain, with salt in the air closer to the shore. 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 Finstown itself or nearby, the right material for each joint matters as much as a neat finish.
Finstown is about 6 miles west of Kirkwall, in the Orkney Islands. We carry out sand mastic for householders, landlords and businesses in Finstown and the surrounding area. Across the Orkney Islands, we cover 51 places, Finstown among them.
Our applicators cover all of KW17 for sand mastic. We cover properties on Grimond Square, Fletts Corner and Seafield. With the A965 close by, Finstown is easy for our applicators to reach for sand mastic. Nearby, we also carry out sand mastic in Heddle (1 mile south-west), Grimbister (1 mile south-east), Germiston (2 miles south-west), Bimbister (3 miles north-west) and Grimeston (3 miles west). As one of the bigger places in the Orkney Islands, Finstown has every kind of property, from flats to offices. If you’re somewhere remote, a little more planning is needed, so mention it when you ask for a quote.
Landmarks near Finstown
Well-known places in the area include Balfour Hospital (5.7 miles east). For a walk, there’s Loch of Wasdale and Hill of Heddle.
For landlords and businesses
Mouldy or split sealant often shows up at the end of a tenancy, and it’s quick to put right between tenancies. Several properties can be quoted together.
In hotels, rooms out of use cost money, so we plan the work room by room. Hotel work is part of what we do, alongside homes and businesses.
What sealant work cannot fix
In fairness, there are a few things sealant will not fix:
- Crumbling stone or brickwork round the window
- Putty and glazing repairs
- Decayed frames that need repair
Not sure which it is? You can send an email to info@mrmastic.co.uk and we will tell you honestly.
Surfaces we seal
- Stone surrounds
- Period & listed homes
- Tenement windows
- Sash and case windows
- Timber door frames
- Brick reveals
What affects the cost of sand mastic
We quote each job individually. These are the things that affect it:
- The product the joint needs
- When we can work, for business premises
- Whether old sealant or filler has to be cut out
- The number and length of the joints
Some things make a job bigger or smaller: the old material and how easily it comes out, any mould to treat, and whether we need extra access for height. We take all of that into account in your quote.
Asking for a quote
When you call or email, it’s useful to know:
- Pictures of the joints, sent by email
- If it’s domestic, commercial or a hotel
- How many joints, rooms or windows are involved
- Any access issues, like height or stairs
For a quote, drop us a line at info@mrmastic.co.uk and tell us where the job is and what the problem looks like. You will have a clear quote before any work starts.