Shetland Islands · Scotland
External & façade joints in Sandwick, Shetland Islands
We cover Sandwick for sealing brickwork movement joints, render, cladding and façade joints. Old material cut out, joints cleaned and sealed neatly.
- Failed seals between different materials
- Failed sealant between panels on a façade
- Joints where the bead has come unstuck
The process
Once we are on site, we compare the joints with what we discussed. If we find something unexpected, we talk it through with you first. After that, the work takes a few hours to a few days, depending on the length of joint and the access. For a place like Sandwick, longer drives are planned in advance. Mention tracks, gates, ferries or anything else about the route.
- First we look over the joints with you, agree which to renew and talk through access.
- Old sealant and any debris are cut and raked out.
- The joint faces are cleaned and primed where the sealant needs it.
- We push in closed-cell backing rod so the sealant is the right depth and bonds to the sides only.
- The new sealant, chosen to suit the brick or render, is applied and tooled to a neat finish.
Preparing for the visit
- Keep pets and children clear of the area while we work
- Tell us about any water getting in
- Let us know about earlier repairs to the joints
Getting 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’re ready, drop us a line at info@mrmastic.co.uk.
Related advice
External mastic in Sandwick, done properly
Getting the depth right is half the job. Backing rod controls how deep the sealant goes and keeps it off the back of the joint, leaving it bonded to two faces so it can move with the wall. If you are dealing with old sealant gone brittle and cracked and plants rooting in failed movement joints, we can help, whatever the surface.
In and around a place like Sandwick, many buildings face open ground and take the full weather. Outside joints on exposed walls work hard.
All our work comes with a one-year guarantee, wherever you are in the Shetland Islands.
- Where
- Sandwick (ZE2)
- Wider area
- Shetland Islands
- Guarantee
- A year, on every job
- Quotes
- A clear price before work begins
- info@mrmastic.co.uk
- Updated
- 26 October 2026
DIY versus a professional finish
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 doesn’t work out, we can still put it right.
Some jobs are best left to a professional: work at height, external movement joints, fire-rated sealant and large areas need the right product, the right access and the right method.
Walls and rooflines in Sandwick
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 movement joints and outside wall joints, which can dry out and crack sooner where a building faces the weather. Under the Repairing Standard, private landlords in Scotland have to keep homes wind and watertight, and sound outside sealant is part of that.
Whether the job is in Sandwick itself or nearby, the right material for each joint matters as much as a neat finish. Around Sandwick, as everywhere, external mastic is only as good as the preparation behind it.
Sandwick is about 14 miles north of Lerwick, in the Shetland Islands. From the centre of Sandwick to the outskirts, external mastic is available for homes and businesses alike. 63 places in the Shetland Islands are on our list.
Jobs for external mastic in ZE2 works the same way as everywhere else we cover. We cover properties on Rocky Road, Saeter and Harlsdale. We also cover the places around Sandwick: 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’re somewhere remote, a little more planning is needed.
Around Sandwick
Not far away are Ward of Clett and Loch of Sandwick.
Different surfaces, different methods
Brickwork movement joints
Brick walls have vertical movement joints to absorb expansion. We reseal them with a low-modulus sealant over backing rod coloured to suit the wall.
Copings and trims
A failed coping joint lets water into the top of the wall. Resealing them is a small job that protects a lot.
What affects the cost of external mastic
We do not publish a price list, because no two jobs are the same. What we look at:
- How much old sealant there is and how hard it is to remove
- Any mould that needs treating
- How many rooms, windows or areas are involved
- The product the joint needs
We do not show prices on the website, because each job is priced on what it involves. Call for a quick quote.
Asking for a quote
To make quoting easier, let us know:
- Roughly how big the job is
- What the problem is, such as mould, gaps, leaks or cracking
- Any access issues, like height or stairs
- Any previous sealing or DIY work
We don’t publish a price list. Instead, your job gets its own clear quote. To get started, send an email to info@mrmastic.co.uk.
For landlords and businesses
Water getting past a failed joint can damage the building, which is a bigger problem in a rented property. Resealing at the right time is simple maintenance that we can handle for you.
In hotels, rooms out of use cost money, so we plan the work room by room. We’ve worked in hotels as well as homes and businesses.
FAQs for Sandwick
Is external mastic in a coastal place like Sandwick any different?
Coastal homes put outside sealant through more weather than inland ones, so preparation and the right sealant matter all the more. Walls facing the sea are generally the first to need attention.
Can you do external mastic in Sandwick?
Yes. We work across all of Scotland, and Sandwick is part of that. Just drop us a line at info@mrmastic.co.uk with a few details of the job, and we’ll give you a clear quote.
Do you work for hotels and businesses?
Yes, regularly. Larger jobs can be planned room by room or area by area.
What should I tell you?
Just the basics: the address or postcode, what’s wrong and any access issues. Then drop us a line at info@mrmastic.co.uk.
Why is there a gap in my brick wall?
A movement joint is a planned break in the wall that absorbs expansion and shrinkage. It’s sealed with a flexible sealant, 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 will confirm how they can be reached safely.
Can you do several jobs on one visit?
Of course. Combining jobs makes good use of the visit.
How long should I leave it?
Different products cure at different speeds, so follow the cure time we give you.
Why it’s worth doing now in Sandwick
Done well, a resealed joint is a neat, straight line that suits the wall. A hurried job with smeared edges and no backing looks worse and fails sooner so it’s worth doing right. In a place like Sandwick, small leaks are easy to put off, but water behind a failed seal does the most damage when nobody’s watching.
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 the work is at height. We take all of that into account in your quote.
Why choose Mr Mastic in Sandwick
- 4.9 on Google from 180+ five-star reviews
- Sanitary silicone with an anti-fungal additive in wet areas
- White, clear, grey or another colour, product permitting
- 12-month guarantee on every job
Read what affects the cost and what customers say.
Other services in Sandwick
How to look after the new joints
After the cure time, these simple habits help:
- Deal with leaking gutters that soak the joints below
- Check external joints each spring
- Make sure movement joints aren’t pointed over
- Ask before painting over external sealant
Have a quick look at the joints each spring. Watch for splits, edges coming away or growth in the joint.
An open movement joint lets rain into the wall every time it pours. Over time it can mean damp inside, stained render or frost-damaged brick.