Shetland Islands · Scotland
Sand mastic for sash & case windows in Mid Yell, Shetland Islands
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for Mid Yell, backed by a 12-month guarantee. Call for a quick quote.
- Mastic round period door frames that has failed
- Mastic that needs renewing before redecorating
- Old sand mastic that has cracked, crumbled or fallen out
How the job changes by surface
Brick reveals
Brick reveals round timber windows are often pointed with sand mastic. It gives a traditional finish.
Sash and case windows
Most of our sand mastic work is on sash windows. We renew the mastic round each box.
Sand mastic in Mid Yell
We work across Mid Yell renewing sand mastic on sash windows and doors. Each joint is raked out, prepared and pointed by hand for a neat, traditional finish. We work on stone surrounds, timber door frames and tenement windows, and the jobs we see most are gaps round a timber door in stone or brick and mastic worn away on windows facing the weather.
Across smaller places in Scotland, homes range from stone and harled cottages to newer houses, many standing in the open. Exposed frames and sills take the full force of wind-driven rain, so the mastic there works hard.
All of our work is guaranteed for twelve months.
- Location
- Mid Yell (ZE2)
- Wider area
- Shetland Islands
- Cover
- 12 months on all our work
- Quotes
- A clear price before work begins
- info@mrmastic.co.uk
- Last updated
- 26 October 2026
Leave it or put it right?
A silicone bead can be quicker, but it can look wrong on a period surround. Sand mastic suits the building and finishes neatly against the masonry. Around Mid Yell, water from a failed joint in an older stone home can soak into timber and plaster, which is a far bigger job than the sealant.
What it costs depends on how much there is to do, how much old material has to come out and access to the work. We give a clear quote before we start.
Why book with us
- Any old sealant cut out fully, not covered over
- 12-month guarantee on every job
- Anti-fungal sanitary silicone in wet areas
- We’re fully insured
Do you need sand mastic in Mid Yell?
Water gets into small cracks in the mastic and loosens it further. Windows facing the weather tend to go first.
Most people get in touch when they notice one of these:
- Patchy fillers round a sash window
- Tired mastic found when preparing windows for paint
- Wind and rain getting in round a sash window
- Mastic worn away on windows facing the weather
Managing a site like Mid Yell Junior High School? Then its window and door frames need their mastic kept sound, just like a home’s.
Before you book anyone
- How hidden problems are handled
- What preparation is included
- Whether VAT is included
- When the joint can take water or movement
Work for landlords, hotels and businesses
Businesses can book us for washrooms, kitchens, offices and more. For commercial premises, we can talk through working times when we quote.
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.
Common questions in Mid Yell
Is sand mastic in a coastal place like Mid Yell any different?
Coastal homes put outside sealant through more weather than inland ones, so the choice of sealant and the preparation matter even more. It’s worth checking the walls that face the sea first.
Is Mid Yell within the area you cover?
Yes, smaller places are covered as well as towns. We work across all of Scotland, including the islands, where work is planned around ferry crossings. Let us know about access, parking and anything unusual about getting there when you book.
Is it OK to seal over old sealant?
No, it won’t last. It may look fine at first, but the new layer lifts away from the old one. The old sealant has to come out completely.
Do you have insurance?
Yes. Mr Mastic is fully insured, and we’ve been doing sealant work for more than 20 years.
Is it possible to take out silicone and use sand mastic instead?
Yes, we do this often. All the old silicone is removed first so the mastic beds in well.
When will the new mastic be hard?
A skin forms quite soon, but full hardening takes longer. We will tell you what to expect for your job.
What is sand mastic?
It’s sand mixed with a linseed-oil-based binder, used between timber frames and stone or brick.
Do I need permission for sand mastic on a listed building?
Yes, it’s worth checking. Your local planning authority can say if consent is needed for listed or conservation-area properties.
Should I try it myself first?
If you’ve already had a go yourself, that is fine. We remove it and do the joint properly, so tell us about it when you ask for a quote.
If you’re set on DIY, put the effort into preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it fails, we can still redo it.
What else we do in Mid Yell
How it works
When we arrive, we start by going over the job with you. We protect the surfaces around the joints before we start. Most jobs take a few hours for a single window, longer for several. For a place like Mid Yell, longer drives are planned in advance. Mention tracks, gates, ferries or anything else about the route.
- Each surround is checked first.
- We rake out the old mastic and clean the joint.
- Large voids are packed out.
- New sand mastic is applied and shaped by hand.
- We finish the mastic to a tidy line.
Preparing for the visit
- Clear items away from the joints we’re working on
- Tell us about any previous sealing or DIY attempts
- Try not to wet indoor joints just before the visit
Get a quote
For sand mastic in Mid Yell, email us at info@mrmastic.co.uk. A short description of the job and where it is helps us quote, and we will agree the price before any work begins.
Advice
What sand mastic looks like in Mid Yell
Mid Yell is close to 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.
If you live in an older home near St John's Church And Churchyard, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
Mid Yell is in the Shetland Islands. We provide sand mastic to homes and businesses in Mid Yell. Mid Yell is one of 63 places in the Shetland Islands where we work for sand mastic.
Work in ZE2 is quoted and booked the same way as anywhere else. Sand mastic is available to properties on Links House, Sunny Side and Burrapark. We also cover the places around Mid Yell: Camb (1 mile north), Aywick (3 miles south), Houbie (7 miles east), Burravoe (7 miles south) and Clivocast (8 miles north-east). Remote and island addresses need a little more planning, so please mention your location when you email us at info@mrmastic.co.uk.
Near you in Mid Yell
Green spaces nearby include White Hill of Vatsetter and Loch of Vatsetter.
What sealant work cannot fix
We won’t take on work that will not last, so here’s what sealant can’t put right:
- Whether work needs listed building consent
- Masonry that needs repairing
- Cracked or broken glass
Not sure which it is? You can send an email to info@mrmastic.co.uk and we’ll tell you honestly.
Where we work in Mid Yell
- Brick reveals
- Period & listed homes
- Stone surrounds
- Sash and case windows
- Tenement windows
- Timber door frames