Shetland Islands · Scotland
External Mastic in Sullom
External mastic across Sullom and nearby, with every bit of old sealant taken out first and a one-year guarantee.
- Sealant pulling away from one side of the joint
- Moss and dirt in joints with no sealant left
- Damp patches traced to an open external joint
Sullom buildings and the weather
Sullom 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. On the islands, wind and salt spray are hard on outside sealant.
For jobs in and around Sullom, choosing the right material for each joint is as important as a tidy finish.
Sullom is in the Shetland Islands. Every kind of property in Sullom can book us for external mastic. The work is guaranteed for a year. Sullom is one of 63 towns and villages in the Shetland Islands where we work for external mastic.
Here we cover the ZE2 postcode area for external mastic. We also cover Scatsta (2 miles east), Brae (3 miles south), Hogaland (4 miles north), Urafirth (5 miles north-west) and Hillswick (5 miles north-west). Island and remote addresses take a little more planning, so tell us where you are when you ask for a quote.
Around Sullom
The countryside around Sullom includes Loch of Stack-houlls.
External mastic in Sullom, done properly
A movement joint is a deliberate break that lets a wall expand and contract. The sealant in it has to stretch and squeeze for years, so once it splits or hardens, the joint stops working and water gets in. Typical jobs include joints where the bead has come unstuck and cracked joints where brick meets render or frames, across façade panels, copings & trims and render & cladding joints.
Across smaller places in Scotland, stone and harled cottages, farm buildings and newer houses often stand exposed to wind and rain. Gutter joints and wall joints take a battering, so they need a sealant that moves with the building.
Whatever the size of the job, you get the same 12-month guarantee in Sullom and across the Shetland Islands.
- Place
- Sullom (ZE2)
- Region
- Shetland Islands
- Guarantee
- A year, on every job
- Quote
- A clear price before any work starts
- info@mrmastic.co.uk
- Page updated
- 26 October 2026
What affects the cost of external mastic
For a quick quote, just ask. The main things that affect it are:
- The number of rooms or windows
- The product the joint needs
- Mould in or behind the old joints
- Access and height
There are no prices on our website, because each job is priced on what it involves. For a quick quote, please send an email to info@mrmastic.co.uk.
What we need to know
Before you ask for a quote, have a think about:
- Whether it’s a home or a business
- Where the property is
- If someone has resealed it before
- Access, such as stairs, a lift or height
If you’re in Sullom and need external mastic, drop us a line at info@mrmastic.co.uk. A short description of the job and where it is helps us quote, and we’ll agree the price before any work begins.
How it works
At the end, we look at the finished work together. The visit itself generally takes a few hours to a few days, depending on the length of joint and the access, depending on the amount of work. Somewhere like Sullom may be a longer drive, and the journey is planned ahead. Tell us about tracks, gates, a ferry crossing or anything unusual about getting there.
- Each joint is checked and the colour of the new sealant agreed.
- We take out the old sealant until the faces are sound.
- Backing rod goes in so the sealant can stretch between the two faces.
- Primer is applied wherever the sealant needs it.
- We gun in low-modulus sealant and tool it neatly.
Preparing for the visit
- Clear items away from the joints we’re working on
- Tell us if parking is tricky
- Tell us about any water getting in
Ask for a quote
There’s no standard price list, as no two jobs are quite the same. Instead, we give you a clear quote for your job. To arrange one, send an email to info@mrmastic.co.uk.
Related advice
Honest limits
We will not take on work that will not last, so these are the limits:
- Cracks in the bricks or render themselves, away from the joints
- Damp that is not coming from the joint
- Movement that’s more than a sealant joint can take
Not sure which it is? You can email us at info@mrmastic.co.uk and we will tell you honestly.
Surfaces we seal
- Render & cladding joints
- Concrete & block
- Façade panels
- Joints between brick and frames
- Brickwork movement joints
- Copings & trims
Can I do it myself?
If you’ve already had a go yourself, that is fine. We remove it and do the joint properly, so just mention it when you contact us.
A careful DIYer can reseal a simple joint, like a short, easy-to-reach joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
Questions from Sullom
Will you come out to Sullom?
Yes, smaller places are covered as well as towns. 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.
Do you cover Sullom for external mastic?
Yes, Sullom is within the area we cover. Our work covers the whole of Scotland. Just drop us a line at info@mrmastic.co.uk with a few details of the job, and we will send you a clear quote.
Is there any odour?
Some sealants have a smell while they cure, which fades as it sets. Opening a window helps.
Do you work at height?
It depends on the building. Send us pictures and a rough idea of the height, and we’ll confirm what access is needed.
Is there a guarantee?
Yes. There’s a 12-month guarantee on every job, large or small.
How long does the job take?
A typical job takes anything from a few hours to several days, depending on the building, including the preparation. Your quote will say how long we expect yours to take.
Do you work for landlords and businesses?
Yes. We work for householders, landlords, letting agents, businesses and hotels in Sullom.
What colours does the sealant come in?
The aim is a neat, even joint in a colour that suits the wall. We will talk through colour options before we start from the range available.
Why it’s worth doing now in Sullom
Done well, a resealed joint is a neat, straight line that suits the wall. A rushed bead with no backing looks untidy and does not last, so it pays to do it properly once. Out of town in Scotland, exposed walls take a lot of weather, and once water gets behind a failed joint, damp in stone or harled walls is slow to dry out.
The cost reflects the work involved, not guesswork. That is why we ask a few questions first and give you a clear price before we start.
Why us?
- Quality sealants from Arbo and Everbuild
- Domestic, commercial and hotel work
- An ARBOMaster approved applicator
- Any old sealant cut out fully, not covered over
Read how sealant jobs are priced and customer reviews.
When to call us in Sullom
Joints sealed without backing rod, or far too deep, rarely last. If the sealant sticks to the back as well as the sides, it can’t stretch and rips as the joint opens.
Most people get in touch after spotting one of these:
- Damp patches traced to an open external joint
- Movement joints with cracked, split or missing sealant
- Sealant that has lost its bond to the brick or render
- Plants rooting in failed movement joints
In and around Sullom, as anywhere, good external mastic starts with a clean, dry, properly prepared joint.
Before booking anyone
- Whether VAT is included
- How the joint is cleaned and prepared
- What happens if they find a problem under the old sealant
- Are they insured?
Different surfaces, different methods
Cladding and façade panels
If the façade has a specified sealant, that’s what we use, or one the system allows. Send us any details you have about the façade.
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.