Orkney Islands · Scotland
Isbister Sand Mastic
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for Isbister, backed by a one-year guarantee. Call for a quick quote.
- Open joints round the window box
- Gaps round a timber door in stone or brick
- Mastic dropping out of the joint
Sand mastic in Isbister
Across Isbister, we renew sand mastic around sash and case windows. Every joint is cleaned out and filled by hand for a neat, traditional finish. If you have failed mastic on an exposed elevation and patchy fillers round a sash window, we can put it right, whatever the surface.
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.
All of our work is guaranteed for twelve months, and the guarantee is the same wherever you are.
- Place
- Isbister (KW17)
- Region
- Orkney Islands
- Cover
- 12 months on all our work
- Quotes
- A clear quote up front
- info@mrmastic.co.uk
- Updated
- 26 October 2026
Windows and doors in Isbister
Isbister 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. On the islands, wind and salt spray are hard on outside sealant.
Around Isbister, as everywhere, sand mastic is only as good as the preparation behind it.
Isbister is about 6 miles north-west of Kirkwall, in the Orkney Islands. Wherever you are in the KW17 postcode area, our applicators can take on sand mastic. Isbister is one of 51 places in the Orkney Islands where we work for sand mastic.
Here we cover the KW17 postcode area for sand mastic. Close by, we work in Norseman (1 mile west), Gorseness (2 miles north-east), Settiscarth (2 miles west), Tingwall (3 miles north) and Finstown (4 miles south-west). If you are somewhere remote, a little more planning is needed.
Landmarks near Isbister
A little further out are Langskaill House (3.3 miles north-east). Green spaces nearby include Enyas Hill and Birsay moors RSPB Reserve.
Work for landlords, hotels and businesses
Whether it’s one flat or a portfolio, you get the same standard of work: old sealant fully removed, joints prepared properly and a 12-month guarantee.
Housing providers, facilities teams and property managers book us too. We can quote a run of properties together.
Quotes for sand mastic in Isbister
The price is agreed before any work begins. It’s based on:
- Whether the work is at height
- How many areas need sealing
- The size of the job
- Which sealant suits the joint
Commercial jobs are quoted on the same basis as homes: the amount of work, how we reach it and what it needs, plus any working-time requirements on site. Ask us for a quote and we’ll explain what it covers.
What we need to know
What to tell us when you ask for a quote:
- Any previous sealing or DIY work
- The rough size of the job
- What the problem is, such as mould, gaps, leaks or cracking
- Access, such as stairs, a lift or height
Need a quote? Please email us at info@mrmastic.co.uk with a few details. You will know what we plan to do, and what it will cost, before any work begins.
DIY sealant or a professional job?
A DIY attempt doesn’t rule out a professional job. We remove it and do the joint properly.
What a professional job adds is preparation and the right product. Joints are cleaned back to sound surfaces and dried, and the sealant is matched to the joint and its conditions, then guaranteed for a year.
Nearby places to Isbister
What else we do in Isbister
What we do, step by step
We keep the work tidy and contained to the joints we’re treating. Expect the work to take anything from a few hours to a full day, depending on how many windows. For a place like Isbister, longer drives are planned in advance. 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.
- 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.
- We mix the sand mastic and apply it by hand, shaping it to the joint.
- The finish is dressed so it sits neatly against the stone or brick.
How to prepare
- Plan for the work area to be out of bounds to pets and children
- Let us know if you’ve seen damp or leaks
- Let us know about earlier repairs to the joints
Get a quote
Every job is quoted individually, so the first step is telling us about yours. Simply send an email to info@mrmastic.co.uk and describe the job, and pictures are welcome.
Read more
What we cannot put right
Some problems need a builder, plumber or other trade rather than us:
- Masonry that needs repairing
- Sashes that rattle, stick or will not open
- Decayed frames that need repair
Not sure which it is? You can drop us a line at info@mrmastic.co.uk and we will tell you honestly before booking.
Where we work in Isbister
- Tenement windows
- Timber door frames
- Period & listed homes
- Sash and case windows
- Stone surrounds
- Brick reveals
Your questions about sand mastic in Isbister
Is Isbister in your area for sand mastic?
Yes. We work across all of Scotland, and Isbister is part of that. Just drop us a line at info@mrmastic.co.uk with a few details of the job, and we will give you a clear price.
Will you come out to Isbister?
Yes, we do. Our work covers the whole of Scotland, islands included, and smaller places are part of that. Longer journeys are simply planned in advance.
Can you do several jobs on one visit?
Yes, we can. Several rooms, windows or areas can go on one quote.
Do the sealants smell?
There can be a smell while the sealant cures, which fades as it sets. Opening a window helps.
What should I tell you?
Just the basics: where it is, what you’ve noticed and how we reach it. After that, simply send an email to info@mrmastic.co.uk.
Is it messy?
No. We work neatly, protect the area around the joints and tidy up afterwards.
Where do you work from?
Our base is in Crawley, West Sussex, and we work across South East England, London and Scotland.
Do you have insurance?
Yes. Full insurance covers our work, and we can confirm the details when we quote.
What we’re called out for in Isbister
Timber frames move with the seasons. The movement cracks the mastic over time.
The problems people usually mention when they call are:
- Crumbling sand mastic round a window
- Open joints round the window box
- Old cement repairs round a window that have failed
- Draughts and rain around sash boxes
For jobs in and around Isbister, choosing the right material for each joint is as important as a tidy finish.
Before you book anyone
- When the joint can take water or movement
- How hidden problems are handled
- Whether you can choose the colour
- Whether the sealant suits the joint
Aftercare tips
Joint life depends on how it’s used and looked after. Here’s what we suggest:
- Plan mastic work ahead of painting
- Inspect the joints round the windows every year or so
- Have rotten timber repaired before new mastic goes in
- Keep modern sealant off the mastic
Avoid sealing over the mastic with silicone. If you see a crack, ask us to take a look before trying a quick fix.
Crumbling mastic lets rain into the joint. That water can reach the timber frame and the wall, so renewing it early is worth it.