Shetland Islands · Scotland
Sand mastic for sash & case windows in Melby, Shetland Islands
Our applicators work in Melby on traditional burnt sand mastic around sash and case windows and doors in stone and brick. Old material cut out, joints cleaned and sealed neatly and every job guaranteed for a year.
- Old cement repairs round a window that have failed
- Window mastic to renew ahead of painting
- Draughts and rain around sash boxes
About our sand mastic in Melby
Old sand mastic cracks, crumbles and falls out over time and gaps open up round the frame. We rake it out and renew it and tidies the surround. If you have draughty sash windows at the surround and open joints round the window box, we can help, on period & listed homes, sash and case windows and brick reveals alike.
Older stone-built homes in Scotland often have sash and case or timber windows set in stone. The sealant has to suit the stone, which rules out acetoxy silicones that can mark or attack it.
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.
- Where
- Melby (ZE2)
- Wider area
- Shetland Islands
- Cover
- 12 months on all our work
- Quote
- Quoted before any work starts
- info@mrmastic.co.uk
- Updated
- 26 October 2026
Why deal with it now?
New mastic over crumbling mastic will not hold. Raking out and preparing the joint gives it a sound base so the new mastic stays put. Exposed walls in smaller Scottish places take a lot of wind and rain, and once water gets behind a failed joint, damp in stone or harled walls is slow to dry out.
Doing several joints on one visit is normally more efficient than separate visits. You’ll get one clear quote for the whole job.
Why Melby customers choose us
- 4.9 on Google from 180+ five-star reviews
- Every job guaranteed for a year
- Experience in homes, commercial sites and hotels
- Old sealant always removed completely
Take a look at how sealant jobs are priced and customer reviews.
Work for landlords, hotels and businesses
Letting agents and landlords in Melby can book us as well as householders. Resealing between tenancies keeps a property looking cared for before the next move-in.
Failed sealant is one of the commonest items on a check-out report. We can quote for more than one property at once.
Also in Melby
How it works
Good joint work is mostly preparation, so that’s where we spend the time. Joints are cleaned back and dried before anything new goes in. All told, the work takes a few hours for a single window, longer for several. Around Melby, distance and access matter more than parking. Tell us how to find the property and how to reach the work.
- We start by checking each surround and agreeing the joints to renew.
- We rake out the old mastic and clean the joint.
- Deep voids are packed so the mastic is the right thickness.
- Sand mastic is mixed and applied by hand, then shaped to the joint.
- The finish is dressed so it sits neatly against the stone or brick.
How to prepare
- Move anything stored near the joints
- Tell us about access, such as stairs, a lift or high-level joints
- Plan for the work area to be out of bounds to pets and children
Getting 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 explain what’s involved.
Related advice
Sand mastic in Melby: local notes
Melby is close to the coast, and homes near the sea take more wind-driven rain, with salt in the air closer to the shore. That’s hard on the mastic around older windows and doors, especially on the side facing the sea. Under the Repairing Standard, private landlords in Scotland have to keep homes wind and watertight, and failed outside joints work against that.
Homes close to St Margaret's Kirk and Graveyard include some older properties, and frames set in older brick or stone need a sealant that suits the wall as well as the frame. In and around Melby, as anywhere, good sand mastic starts with a clean, dry, properly prepared joint.
Melby is in the Shetland Islands. For sand mastic in and around Melby, it’s easy to get a quote: please email us at info@mrmastic.co.uk. We cover the Shetland Islands from our Crawley base. Across the Shetland Islands, we cover 63 places, and Melby is one of them.
Postcode districts we cover here for sand mastic: ZE2. Nearby, we also carry out sand mastic in Sandness (1 mile south-east), Walls (6 miles south-east), Aith (10 miles east), Easter Skeld (11 miles south-east) and Brae (12 miles north-east). If you’re somewhere remote, the job takes a little more planning.
Around Melby
The countryside around Melby includes Loch of Norby.
How to look after the new joints
Joint life depends on how it’s used and looked after. We suggest:
- Avoid patching sand mastic with silicone
- Leave the new mastic unpainted
- Take care around the mastic when scraping paint
- Ask a joiner to look at soft timber first
Keep paint scrapers and sanders off the mastic when redecorating. It can be damaged by heavy scraping.
Good mastic helps keep the frame dry. Failed mastic lets water reach the timber and timber that stays wet can rot.
DIY sealant or a professional job?
Some sealant jobs are within reach of a careful DIYer, such as a straightforward joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
A DIY attempt does not rule out a professional job. We cut it out and start again.
Melby: your questions answered
Is sand mastic in a coastal place like Melby any different?
Near the coast, wind-driven rain and, nearer the shore, salt air make outside sealant work harder. The right product, a clean joint and the right depth all help it cope.
Will you come out to Melby?
Yes, smaller places are covered as well as towns. Our work covers the whole 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.
What’s sand mastic made of?
It’s a mix of sand and a linseed-oil-based binder. It’s applied by hand and shaped to suit the surround.
Will you leave a mess?
No. We work neatly, protect the area around the joints and tidy up afterwards.
How long will you be here?
That depends on how much there is to do, but as a guide it takes anything from a few hours to a full day, depending on how many windows. We’ll tell you when we quote.
Can I paint the new mastic?
Traditional guidance is not to paint over sand mastic. If you are redecorating the window, ask us first and we’ll advise.
What should I tell you?
Just the basics: where it is, what you’ve noticed and how we reach it. Then email us at info@mrmastic.co.uk.
What sealant do you use?
The product depends on the job: sanitary silicone where it gets wet, and sealants suited to movement or weather elsewhere. We use products from Arbo and Everbuild.
Quotes for sand mastic in Melby
The price is agreed before any work begins. It’s based on:
- Any mould that needs treating
- Whether old sealant or filler has to be cut out
- The product the joint needs
- Whether the work is at height
Some things make a job bigger or smaller: how much old sealant there is and how stubborn it is, any mould to treat, and whether we need extra access for height. Your quote takes all of that into account.
What to tell us for a quote
What to tell us when you ask for a quote:
- The rough size of the job
- What’s wrong with the joints now
- If it’s domestic, commercial or a hotel
- Any access issues, like height or stairs
If you’re in Melby and need sand mastic, send an email to info@mrmastic.co.uk. A short description of the job and where it is helps us quote, and you will get a clear quote before work begins.
What the job involves on each surface
Brick reveals
Brick reveals round timber windows are often pointed with sand mastic. It suits older brickwork.
Stone surrounds
Sand mastic sits naturally against stone. It finishes to look like part of the surround.