Shetland Islands · Scotland
Sand mastic for sash & case windows in Sandwick, Shetland Islands
Sand mastic in Sandwick from a team with over 20 years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Modern sealant on a period surround
- Crumbling sand mastic round a window
- Open joints round the window box
Sand mastic in Sandwick, done properly
Silicone on a period window often looks wrong and doesn’t suit the building. Sand mastic gives a finish that matches the age of the house, and we can replace one with the other. If you have wind and rain getting in round a sash window and a silicone bead on a sash window that spoils the look, we can help.
Across smaller places in Scotland, homes range from stone and harled cottages to newer houses, many standing in the open. Wind-driven rain finds any gap around a frame or sill.
Each job carries a 12-month guarantee, whatever its size.
- Where
- Sandwick (ZE2)
- Wider area
- Shetland Islands
- Guarantee
- 12 months on all our work
- Quote
- Quoted before any work starts
- info@mrmastic.co.uk
- Updated
- 26 October 2026
Your questions about sand mastic in Sandwick
Does living near the coast affect sand mastic in Sandwick?
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 Sandwick within the area you cover?
Yes. Sandwick 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. Let us know about access, parking and anything unusual about getting there when you book.
What’s sand mastic made of?
Sand mastic is a traditional material for pointing round windows and doors. It’s made with sand and a linseed-oil-based binder.
Do you do commercial work?
Yes. Larger jobs can be planned room by room or area by area.
When will the new mastic be hard?
It takes a while. It skins first and hardens fully later and we’ll give you an idea for your job.
Will you leave a mess?
Not at all. We work neatly, protect the area around the joints and tidy up afterwards.
What guarantee comes with the work?
Our 12-month guarantee applies to all our work.
Is it possible to take out silicone and use sand mastic instead?
Usually, yes. With the silicone removed and the joint cleaned, sand mastic is applied by hand.
Sandwick homes and the weather
Sandwick 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.
Whether the job is in Sandwick itself or nearby, the right material for each joint matters as much as a neat finish.
Sandwick is about 14 miles north of Lerwick, in the Shetland Islands. Sandwick gets the same service as everywhere we cover: old sealant removed completely, careful preparation and a 12-month guarantee. Across the Shetland Islands, we cover 63 places, Sandwick among them.
We cover every part of the ZE2 postcode area for sand mastic and the streets around it. If you need sand mastic at a property on Rocky Road, Saeter and Harlsdale or a nearby road, our applicators can take on the job. We also cover Clate (1 mile south), Symbister (1 mile north-east), Hamister (1 mile north), Huxter (1 mile east) and Tripwell (2 miles north-east). We also work in nearby towns such as Lerwick (14 miles south), Sound (14 miles south) and Brae (12 miles west). If you are somewhere remote, a little more planning is needed, so mention it when you ask for a quote.
Landmarks near Sandwick
For a walk, there’s Ward of Clett and Loch of Sandwick.
Surface by surface
Stone surrounds
Stone surrounds suit sand mastic well. The finish blends with the masonry.
Sash and case windows
Most of our sand mastic work is on sash windows. Each joint round the box is raked out and renewed.
What affects the cost of sand mastic
You’ll get a clear quote before any work starts. It takes into account:
- The product the joint needs
- The number of rooms or windows
- How easy the joints are to reach
- Whether old sealant or filler has to be cut out
Every job is a little different, so each one gets its own quote. The number of joints, how easy they are to reach and the sealant needed all make a difference.
What to tell us for a quote
When you contact us, it’s useful to know:
- How we’d reach the joints
- Whether it’s a home or a business
- If someone has resealed it before
- Where the property is
For a quote, send an email to 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.
Also in Sandwick
Signs you need sand mastic in Sandwick
Scraping and sanding before painting can loosen old mastic. It’s often found when windows are being prepared for paint.
The most common problems we see are:
- Cracked mastic round a front door frame
- Gaps where the frame meets the masonry
- Draughty sash windows at the surround
- Mastic that needs renewing before redecorating
In and around Sandwick, as anywhere, good sand mastic starts with a clean, dry, properly prepared joint.
Comparing quotes
- Whether they’re fully insured
- Which sealant they’ll use, and why
- Which colour the sealant will be
- How the joint is cleaned and prepared
Honest limits
New sealant can’t fix everything, and we’ll tell you before we start. Sealant will not put right:
- Rotten sashes, sills or window boxes (a joiner’s job)
- Sashes that rattle, stick or will not open
- Decisions on consent for listed homes
Not sure which it is? You can drop us a line at info@mrmastic.co.uk and we’ll tell you honestly before booking.
Where we work in Sandwick
- Brick reveals
- Tenement windows
- Sash and case windows
- Period & listed homes
- Timber door frames
- Stone surrounds
What we do, step by step
Most of a good job is in the preparation, and we don’t rush it. Joints are cleaned back and dried before anything new goes in. All told, the work takes anything from a few hours to a full day, depending on how many windows. For a place like Sandwick, longer drives are planned in advance. Mention tracks, gates, ferries or anything else about the route.
- We look at the surrounds with you and agree the joints to renew.
- Old mastic and any loose material are raked out.
- Deep gaps are packed so the mastic sits at the right depth.
- We apply the mastic by hand and shape it.
- We dress the finish so it sits neatly against the masonry.
Getting ready for the visit
- Let us know about stairs, lifts or work at height
- Mention any parking rules near the property
- Where the joints are inside, avoid wetting them before we arrive
Ask for a quote
For sand mastic in Sandwick, send an email to info@mrmastic.co.uk. Tell us what the problem is and where, and you’ll get a clear quote before work begins.
Related advice
Looking after it afterwards
Looking after new joints is easy:
- Look over the window mastic once a year
- Ask a joiner to look at soft timber first
- Sort the mastic before the decorators arrive
- Go gently near the mastic when preparing windows
Avoid sealing over the mastic with silicone. If anything cracks, get it looked at rather than patching it.
It’s best to renew mastic before painting the windows. Painting over failed mastic hides the problem for a while.
For landlords and businesses
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.
For anyone letting property in or around Sandwick, several properties can be quoted together. Just tell us the addresses and what each one needs.