Shetland Islands · Scotland
Scatness External Mastic
External mastic for Scatness, by sealant specialists with 20+ years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Rigid filler in a joint that should flex
- Panel joints letting water in
- Joints with sealant missing in places
External mastic in Scatness, done properly
Ground-floor and low-level joints are straightforward to reach. Where joints are higher up, tell us about the building when you get in touch and we’ll confirm what access is needed. If you are dealing with leaking joints around cladding and façade panels and moss and dirt in joints with no sealant left, we can help, on render & cladding joints, brickwork movement joints and concrete & block alike.
External sealant needs dry surfaces, so outdoor work around Scatness is planned around the weather, and longer journeys are planned in advance. Tell us how to reach each wall, gutter and roofline.
A one-year guarantee comes with the work, just as it does everywhere we cover.
- Place
- Scatness (ZE3)
- Wider area
- Shetland Islands
- Guarantee
- A year, on every job
- Quote
- A clear quote up front
- info@mrmastic.co.uk
- Updated
- 26 October 2026
Different surfaces, different methods
Cladding and façade panels
Panels heat up and cool down quickly, so the joints work hard every day. We choose the product to suit.
Render joints
The face of render can be soft, so a sealant that stretches easily protects the edges. We prime where the product needs it.
Places near Scatness
More services for Scatness
How it works
When we get to you, 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. Somewhere like Scatness may be a longer drive, and the journey is planned ahead. Mention tracks, gates, ferries or anything else about the route.
- We start by checking each joint, agreeing the ones to redo and how we will reach them.
- We cut out the failed sealant and rake out any dirt or growth.
- Both sides are cleaned back to sound material and primed if needed.
- Closed-cell backing rod is fitted to set the depth and stop three-sided bonding.
- The new sealant, chosen to suit the brick or render, is applied and tooled to a neat finish.
Before we arrive
- Let us know about stairs, lifts or work at height
- For business premises, tell us about site rules or sign-in
- Let us know about earlier repairs to the joints
Get a quote
For a quote, drop us a line at info@mrmastic.co.uk and tell us where the job is and what the problem looks like. We will give you a clear quote before any work starts.
Read more
How we quote for external mastic
Every job gets its own quote. These are the things that affect it:
- How easy the joints are to reach
- Whether there’s mould to deal with
- The product the joint needs
- The number and length of the joints
Instead of a standard rate, we look at what your job involves: the amount of work, the old material and the access. The price is agreed before we begin.
Asking for a quote
There’s no need for technical detail. It helps if you can tell us:
- How we’d reach the joints
- The address or postcode of the job
- What’s wrong with the joints now
- Whether it has been sealed before
If you’re in Scatness 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.
When to call us in Scatness
Poor preparation causes many early failures: joint faces that were dusty or damp, unprimed where they needed it, or still carrying old sealant. The sealant never bonds properly.
The problems people generally mention when they call include:
- Old sealant gone brittle and cracked
- Brick movement joints where the sealant has split
- Plants rooting in failed movement joints
- Movement joints filled with mortar instead of sealant
In and around Scatness, as anywhere, good external mastic starts with a clean, dry, properly prepared joint.
Questions to ask before booking
- Whether they’re fully insured
- Who does the work, and how experienced they are
- Which sealant they’ll use, and why
- How the colour is chosen
Keeping the joints in good condition
Aftercare is simple, and it makes a real difference:
- Leave the joints unpainted unless we have said otherwise
- Act on the first splits you see
- Fix overflowing gutters above sealed joints
- Keep movement joints as flexible joints, not mortar
If you have more work done on the wall, such as new render, cladding or an opening, show the contractor the movement joints. They must stay as flexible joints, never rendered or pointed over.
Gaps, plants or missing sealant in a joint are worth getting looked at. Early work is quicker and leaves a better finish.
Scatness: your questions answered
Do you cover Scatness for external mastic?
Yes. We work across all of Scotland, and Scatness is part of that. You can send an email to info@mrmastic.co.uk and let us know what needs doing.
Does the coastal weather in Scatness affect outside sealant?
Coastal homes put outside sealant through more weather than inland ones, so the choice of sealant and the preparation matter even more. Walls facing the sea are usually the first to need attention.
Do you seal joints where cladding meets other materials?
Yes. Materials like render, brick, metal and uPVC all move differently, so the joint between them must be flexible. We choose one that suits both surfaces.
Do you work at height?
It depends on the height and the site. Ground-floor joints are simple; for higher ones, send details and we will confirm the access.
What information do you need?
Where the job is, what the problem is and roughly how big it is. If you can, email a few pictures.
Should I point up the gap in my brickwork?
No. A mortar-filled joint cannot move, so the wall cracks somewhere else instead. Use a flexible sealant with backing rod.
What does external mastic cost?
There’s no set price, as it depends on the job: its size, the old material, access and the product needed. We agree the price before any work begins.
Can you quote for more than one area?
Yes. Tell us about everything you’d like done and we will quote it together.
What external mastic looks like in Scatness
Scatness is close to the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. That’s hard on movement joints and outside wall joints, especially on the side facing the sea. Island jobs need planning around ferries and the weather, so the more notice, the better.
Whether the job is in Scatness itself or nearby, the right material for each joint matters as much as a neat finish.
Scatness is in the Shetland Islands. Every kind of property in Scatness is covered for external mastic. Every job comes with our one-year guarantee. Across the Shetland Islands, we cover 63 places, and Scatness is one of them.
We work across ZE3 for external mastic. If you need external mastic at a property on Sanblister Place and Colonial Place or a nearby road, our applicators can take on the job. If you are just outside Scatness, we cover Toab (1 mile north), Exnaboe (1 mile north), Hestingott (1 mile north), Boddam (3 miles north) and South Scousburgh (4 miles north). For island and remote addresses, a little more planning is needed, so mention it when you ask for a quote.
Local landmarks in Scatness
Well-known places in the area include Shetland Crofthouse Museum (2.8 miles north). The countryside around Scatness includes Sumburgh Head RSPB reserve and Loch of Huesbreck.
What we can’t put right
Before booking, it’s worth knowing the limits too:
- Render that is blown, hollow or coming away
- Damp that is not coming from the joint
- Adding movement joints to masonry that has none
If in doubt, drop us a line at info@mrmastic.co.uk and we will say what we think before you book.
Where we work in Scatness
- Render & cladding joints
- Joints between brick and frames
- Brickwork movement joints
- Copings & trims
- Concrete & block
- Façade panels
Why deal with it now?
A low-modulus sealant is chosen because it moves without pulling hard at the edges. That protects surfaces like brick, render and concrete. A stiffer product can damage the joint edge as it fails. Exposed walls in smaller Scottish places take a lot of wind and rain, and damp in stone or harled walls takes a long time to dry once water gets behind a joint.
Leaving a failed joint usually makes the job bigger, not smaller, because water and mould keep working on it. If you are not sure whether it needs doing, send an email to info@mrmastic.co.uk for an honest opinion and a quote.
Why choose Mr Mastic in Scatness
- Old sealant always removed completely
- Over 20 years’ experience
- Full insurance on every job
- We leave the area clean and tidy
Read what affects the cost or what customers say.