Shetland Islands · Scotland
Sand Mastic in Bigton
Window and door surrounds in Bigton need attention? We cut out the old, prepare the joints and apply the right sealant.
- Old sand mastic that has cracked, crumbled or fallen out
- Old cement repairs round a window that have failed
- Gaps round a timber door in stone or brick
About our sand mastic in Bigton
Sand mastic has long been used to fill the joint between timber frames and masonry. It’s made from sand and a linseed-oil-based binder and built up by hand. On older homes, it suits the building far better than silicone. If you have draughty sash windows at the surround and failed mastic on an exposed elevation, we can put it right.
In and around a place like Bigton, homes range from older stone-built cottages to newer houses. Wind-driven rain finds any gap around a frame or sill.
A 12-month guarantee comes with the work, just as it does everywhere we cover.
- Location
- Bigton (ZE2)
- Region
- Shetland Islands
- Cover
- One year on every job
- Quote
- Quoted before any work starts
- info@mrmastic.co.uk
- Page updated
- 26 October 2026
Can I do it myself?
Sealing over old silicone is the commonest DIY error. New silicone won’t bond to old, so it lifts and traps water and mould underneath. All the old material has to come out first.
Overfilling a joint is a classic DIY mistake. A thick, smeared bead looks untidy and doesn’t move well, and getting the depth right matters as much as the look.
When something else is needed
In fairness, there are a few things sealant will not fix:
- Masonry that needs repairing
- Sashes that rattle, stick or won’t open
- Cracked or broken glass
If in doubt, email us at info@mrmastic.co.uk and we will say what we think before booking.
Where we work in Bigton
- Period & listed homes
- Tenement windows
- Stone surrounds
- Brick reveals
- Sash and case windows
- Timber door frames
Do you need sand mastic in Bigton?
Over the years, sand mastic weathers. It dries out, cracks and loses its grip from the frame or the masonry.
Any of these means the joints need attention:
- Silicone on a period window that looks wrong
- Tired mastic found when preparing windows for paint
- Wind and rain getting in round a sash window
- Cement or filler used on old window joints that has cracked
Homes close to St Ninian's Church And Gatepiers include some older properties, and the joint between an old wall and a newer frame is generally the first place rain gets in.
Comparing quotes
- What preparation is included
- What insurance they hold
- Whether you can choose the colour
- How long to leave it before use
Bigton homes and the weather
Bigton is within about 1 mile of the coast, and homes near the sea take more wind-driven rain, with salt in the air closer to the shore. That is hard on the mastic around older windows and doors, especially on the side facing the sea. Sash and case windows are common in older Scottish homes, and the joint between the box frame and the stone or render is traditionally pointed with sand mastic.
Around Bigton, as everywhere, sand mastic is only as good as the preparation behind it.
Bigton is in the Shetland Islands. If you need sand mastic in Bigton, please email us at info@mrmastic.co.uk for a quick quote. We cover the Shetland Islands from our Crawley base, Bigton included. We cover 63 towns and villages across the Shetland Islands, from the larger towns to small villages.
All of ZE2 is within our area for sand mastic. Nearby, we also carry out sand mastic in Levenwick (2 miles east), Hoswick (3 miles north-east), South Scousburgh (3 miles south), Sandwick (3 miles north-east) and Boddam (4 miles south). Larger places within reach include Lerwick (13 miles north-east), Sound (13 miles north-east) and Scalloway (11 miles north). If you are somewhere remote, a little more planning is needed, so mention it when you ask for a quote.
Near you in Bigton
The countryside around Bigton includes Loch of Vatsetter.
What else we do in Bigton
How it works
On the day, there’s very little for you to do. Show us the job and we’ll take it from there. The work itself takes a few hours for a single window, longer for several from start to finish. For a place like Bigton, longer drives are planned in advance. Tell us about tracks, gates, a ferry crossing or anything unusual about getting there.
- We check the window surrounds and agree which joints need renewing.
- Old, loose mastic is raked out and the joint cleaned.
- Large voids are packed out first, so the mastic isn’t too thick.
- We mix the sand mastic and apply it by hand, shaping it to the joint.
- We dress the surface so it sits neatly against the masonry.
Before we arrive
- For business premises, tell us about site rules or sign-in
- Tell us if parking is tricky
- Mention if the joints have been sealed before
Get a quote
It all starts with a short chat. Describe the problem, the location and the size of the job, and we’ll talk you through what we’d do. Whenever you are ready, drop us a line at info@mrmastic.co.uk.
Read more
FAQs for Bigton
Does living near the coast affect sand mastic in Bigton?
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.
Do you cover smaller places like Bigton?
Yes, Bigton is covered. We work across all of Scotland, islands included, and smaller places are part of that. The journey is planned ahead, so it helps to know about access.
Do you take out the old sealant first?
Yes, always, and completely. New silicone does not stick to old silicone, so the joint is cleaned back first.
Can you match the sealant colour?
We help you choose a colour that suits. The product needed can limit the range.
Can you work on commercial sites?
Yes. We have worked for hotels, offices and other businesses and we are fully insured.
Can new sealant go over the old?
No. New silicone will not bond to old silicone, and anything trapped underneath, including mould and water, stays there. It all has to come out first.
Is the work guaranteed?
You get our 12-month guarantee to all our work.
Do you hold any approvals?
Yes. We’re approved under the ARBOMaster scheme.
What the job involves on each surface
Stone surrounds
Stone surrounds suit sand mastic well. It finishes to look like part of the surround.
Brick reveals
Loose mastic comes out and deep gaps are packed before the new mastic goes in.
What affects the cost of sand mastic
You will get a clear quote before work begins. It’s based on:
- The number and length of the joints
- Any working-time requirements on site
- How many rooms, windows or areas are involved
- Mould in or behind the old joints
A few things move the cost up or down: how much old sealant there is and how stubborn it is, any mould to treat, and whether we need extra access for height. We take all of that into account in your quote.
Helping us quote
When you call or email, it’s useful to know:
- What’s wrong with the joints now
- Any access issues, like height or stairs
- Where the job is, and your postcode
- Whether it’s a home or a business
We do not publish a price list. Instead, your job gets its own clear quote. To get started, send an email to info@mrmastic.co.uk.
What happens if it’s left?
Gaps round a sash window let in rain and draughts. Left, water can reach the timber and the wall, so dealing with it now protects both. Around Bigton, water from a failed joint in an older stone home can soak into timber and plaster.
Doing several joints on one visit normally makes better use of the time than several visits. We will give you a clear price for the lot.
Why book with us
- Any old sealant cut out fully, not covered over
- Over 20 years’ experience
- Anti-fungal sanitary silicone in wet areas
- Full insurance on every job
Take a look at what affects the cost and what customers say.