Shetland Islands · Scotland
External & façade joints in Sandwick, Shetland Islands
Movement joints in Sandwick need attention? We remove the old material, prepare the joints and seal them properly.
- Joints with sealant missing in places
- Water getting into walls through failed joints
- Cracked joints where brick meets render or frames
Looking after it afterwards
After the cure time, these simple habits help:
- Make sure movement joints aren’t pointed over
- Tell anyone working on the walls about the movement joints
- Act on the first splits you see
- Keep water from gutters off the wall
Make sure anyone working on the wall later knows where the movement joints are. They should be kept open and resealed, not filled.
Water getting behind cladding or render can go unnoticed for a long time. By the time there’s a damp patch, the damage can be well established, so it’s worth resealing at the first signs.
How we handle external mastic in Sandwick
External mastic is a job where short cuts show quickly. Overfilled joints, missing backing rod and sealant laid over old sealant rarely last long. We take the old material out and do it properly. If you are dealing with old sealant gone brittle and cracked and plants rooting in failed movement joints, we can put it right, on brickwork movement joints, joints between brick and frames and render & cladding joints alike.
Stone walls need a stone-friendly sealant, as acetoxy products can attack some stone. Newer houses need their movement joints and roofline trims kept sound.
The work is covered for a year after we finish. If there’s a problem with it, please drop us a line at info@mrmastic.co.uk.
- Where
- Sandwick (ZE2)
- Wider area
- Shetland Islands
- Cover
- One year on every job
- Price
- Quoted before any work starts
- info@mrmastic.co.uk
- Page updated
- 26 October 2026
What happens if it’s left?
Running new sealant over the old bead rarely lasts. The new layer can’t bond properly to old, weathered material, so the old joint is cut out fully first. Out of town in Scotland, exposed walls take a lot of weather, and damp in stone or harled walls takes a long time to dry once water gets behind a joint.
Some things make a job bigger or smaller: how much old sealant there is and how stubborn it is, whether mould needs treating, and whether we need extra access for height. We take all of that into account in your quote.
Why us?
- Quality sealants from Arbo and Everbuild
- A 12-month guarantee on all work
- We are fully insured
- Anti-fungal sanitary silicone in wet areas
Take a look at what affects the cost or our reviews.
Landlord and commercial work in Sandwick
Hotels need rooms back in use, so we plan the work room by room around your bookings where we can. We’ve worked in hotels as well as homes and businesses.
Letting agents often deal with us directly. Send the address, what’s needed and the access arrangements and we’ll give you a quote.
How we quote for external mastic
Call for a quick quote. The main things that affect it are:
- Which sealant suits the joint
- The number of rooms or windows
- The size of the job
- How easy the joints are to reach
Homes and businesses are quoted the same way: the amount of work, how we reach it and what it needs, plus any working-time requirements on site. Call for a quick quote and we’ll go through it with you.
Helping us quote
To help us quote quickly, please include:
- Any access issues, like height or stairs
- Where the property is
- If someone has resealed it before
- If it’s domestic, commercial or a hotel
We do not publish a price list. Instead, we give you a clear quote for your job. To arrange one, send an email to info@mrmastic.co.uk.
What external mastic looks like in Sandwick
Sandwick is close to the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. Both are hard on movement joints and outside wall joints, which can dry out and crack sooner where a building faces the weather. Private landlords in Scotland must meet the Repairing Standard, which includes keeping a home wind and watertight, and failed outside joints work against that.
In and around Sandwick, as anywhere, good external mastic starts with a clean, dry, properly prepared joint. For jobs in and around Sandwick, choosing the right material for each joint is as important as a tidy finish.
Sandwick is in the Shetland Islands. We carry out external mastic for householders, landlords and businesses in Sandwick and the surrounding area. Across the Shetland Islands, we cover 63 places, Sandwick among them.
Jobs for external mastic in ZE2 works the same way as everywhere else we cover. We cover properties on Central Park, Parklands and Aestbrek and the roads around them. Other places close to Sandwick include Hoswick (1 mile west), Mail (2 miles north), Levenwick (2 miles south-west), Bremirehoull (3 miles north) and Bigton (3 miles south-west). Larger places within reach include Lerwick (11 miles north), Sound (10 miles north) and Scalloway (10 miles north). Sandwick is among the bigger towns we cover in the Shetland Islands. Island and remote addresses take a little more planning, so tell us where you are when you ask for a quote.
Landmarks near Sandwick
Green spaces nearby include Loch of Vatsetter.
Your questions about external mastic in Sandwick
Is external mastic in a coastal place like Sandwick any different?
Coastal weather is harder on outside sealant: there’s more wind-driven rain and, closer to the shore, salt in the air. Choosing the right sealant for the frame and wall, laid at the right depth, helps it last.
Is Sandwick in your area for external mastic?
Yes, Sandwick is within the area we cover. Our work covers the whole of Scotland. You can email us at info@mrmastic.co.uk and tell us what needs doing.
What is a movement joint?
A vertical gap in a long brick wall is normally a movement joint. It lets the bricks expand without cracking and needs a flexible seal, not mortar.
Can you reach joints on upper floors?
Each building is different. Send us photos and a rough idea of the height, and we’ll confirm what access is needed.
Do you have insurance?
Yes. We are fully insured, and we have been doing sealant work for more than 20 years.
When will the joints need doing again?
It varies with how exposed the wall is and how much the joint moves. Signs to watch for are cracking, hardening and gaps at the edges.
When is the sealant fully cured?
Different products cure at different speeds, so follow the cure time we give you.
How long does external mastic take?
A typical job takes a few hours to a few days, depending on the length of joint and the access. We will confirm how long when we quote.
Nearby places to Sandwick
Other services in Sandwick
Elsewhere in the Shetland Islands
External Mastic in all 63 places in the Shetland Islands
All services in the Shetland Islands
All areas
About external & façade joints
When something else is needed
We’ll always be straight with you, so here’s what new sealant will not do:
- Cracks in the bricks or render themselves, away from the joints
- Render that’s blown, hollow or coming away
- Damp that isn’t coming from the joint
Not sure which it is? You can send an email to info@mrmastic.co.uk and we’ll tell you honestly before you book.
Surfaces we seal
- Concrete & block
- Copings & trims
- Façade panels
- Brickwork movement joints
- Joints between brick and frames
- Render & cladding joints
How the visit works
The work is kept neat and contained to the area we’re working on, so you can get on with your day. Expect the work to take a few hours for a handful of joints, longer for a whole elevation, and we tell you how long to leave it before we go. Outdoor work around Sandwick depends on the weather, as sealant needs a dry surface, so external jobs may need to move if the day turns wet. Indoor work goes ahead whatever the weather.
- First we look over the joints with you, agree which to renew and talk through access.
- The old mastic and anything lodged in the joint is removed.
- Both sides are cleaned back to sound material and primed if needed.
- We push in closed-cell backing rod so the sealant is the right depth and bonds to the sides only.
- We gun in a flexible exterior sealant in a colour that suits the wall and tool it neatly.
Preparing for the visit
- Mention if the joints have been sealed before
- For indoor joints, keep the area dry beforehand if you can
- Let us know if you’ve seen damp or leaks
Ask for a quote
For external mastic in Sandwick, email us at info@mrmastic.co.uk. Tell us what the problem is and where, and you’ll get a clear quote before any work starts.
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Should I try it myself first?
Some jobs are best left to a professional: high-level joints, fire-rated gaps, external movement joints and big jobs call for the right materials, safe access and experience.
If you are set on DIY, put the effort into preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it fails, we can still redo it.