Highland · Scotland
External & façade joints in Diuranais, Highland
External mastic across Diuranais and nearby, with old sealant always removed completely.
- Failed sealant between panels on a façade
- Joints pointed up with cement by mistake
- Old sealant gone brittle and cracked
External mastic in Diuranais
Ground-floor and low-level joints are straightforward to reach. For joints higher up, give us some details of the building and we’ll confirm what’s needed to reach them safely. If you have leaking joints around cladding and façade panels and plants rooting in failed movement joints, we can put it right, on render & cladding joints, brickwork movement joints and façade panels alike.
Older stone buildings need a sealant that suits the stone, not an acetoxy product that can mark or attack it. On newer homes, the movement joints and roofline trims are what need watching.
There’s a 12-month guarantee on every job, large or small.
- Where
- Diuranais (IV27)
- Wider area
- Highland
- Guarantee
- One year on every job
- Quote
- Quoted before any work starts
- info@mrmastic.co.uk
- Page updated
- 26 October 2026
Landlord and commercial work in Diuranais
Hotels need rooms back in use, so we plan the work room by room. We have worked in hotels as well as homes and businesses.
For anyone letting property in or around Diuranais, several properties can go on one quote. Send us the addresses and the work at each.
DIY versus a professional finish
The biggest DIY mistake is sealing over old sealant. New silicone won’t bond to old, so it peels away and traps moisture behind it. All the old material has to come out first.
Some sealant jobs are within reach of a careful DIYer, such as a straightforward joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
Diuranais questions
Is external mastic in a coastal place like Diuranais any different?
Coastal homes put outside sealant through more weather than inland ones, so preparation and the right sealant matter all the more. It’s worth checking the walls that face the sea first.
Do you cover Diuranais for external mastic?
Yes. Our work covers the whole of Scotland, and Diuranais is part of that. Just email us at info@mrmastic.co.uk with a few details of the job, and we’ll give you a clear price.
I rent my home. Can I book you?
Yes, though it’s best to check with your landlord first. Many landlords are glad to have it sorted.
What is a movement joint?
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 do several jobs on one visit?
Yes, we can. Several rooms, windows or areas can go on one quote.
Which products do you use?
Each joint gets the product that suits it. Movement, water and weather all affect the choice, and we will tell you what we’re using.
What is backing rod for?
Closed-cell backing rod sets the depth of the sealant and stops it sticking to the back of the joint. That way it bonds to the two sides only and can stretch.
Do you guarantee your work?
Yes, always. Each job is guaranteed for twelve months, wherever you are.
How the job changes by surface
Render joints
Cracks along render joints let water in behind the coat. A sound joint keeps the render dry behind and helps it last.
Joints between dissimilar materials
Where a frame or panel meets masonry, water often finds a way in. We cut out the old sealant and reseal with a product suited to both surfaces.
How it works
At the end, we look at the finished work together. The visit itself normally takes anything from a few hours to several days, depending on the building, depending on the size of the job. For a place like Diuranais, longer drives are planned in advance. Tell us about tracks, gates, a ferry crossing or anything unusual about getting there.
- We start by walking round the building and agreeing the joints and the access.
- Every bit of old sealant and any mortar or debris is cut out.
- The faces are brushed clean and primed where the product requires it.
- We fit closed-cell backing rod to control the depth.
- We apply the sealant, tool it and check the whole run.
Preparing for the visit
- Keep pets and children clear of the area while we work
- Mention any tricky access
- On commercial sites, let us know about site rules
Getting a quote
Asking for a quote is easy: tell us what needs doing and where, and roughly how big it is. A few photos by email make the job easier to understand.
Advice
Places near Diuranais
Other services in Diuranais
Diuranais buildings and the weather
Diuranais is close to the coast, and homes near the sea take more wind-driven rain, with salt in the air closer to the shore. That’s hard on movement joints and outside wall joints, especially on the side facing the sea. 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 Diuranais itself or nearby, the right material for each joint matters as much as a neat finish.
Diuranais (Gaelic: Durness) is in Highland. Anywhere in IV27, our applicators can take on external mastic. Our Highland coverage runs to 253 places, and Diuranais is one of them.
Postcode districts we cover here for external mastic: IV27. External mastic is available to properties on Hames Place and School Road and the roads around them. Other places close to Diuranais include Smoo (1 mile south-east), Melness (12 miles east), Kinlochbervie (13 miles south-west), Tongue (14 miles south-east) and Scourie (21 miles south-west). If you’re somewhere remote, the job takes a little more planning, so let us know when you get in touch.
Landmarks near Diuranais
For a walk, there’s Loch Bad an Fheur-loch.
When something else is needed
New sealant can’t fix everything, and we’d rather say so up front. Sealant won’t put right:
- Subsidence or other structural problems
- Damp from another source, such as a leaking gutter or a bridged damp-proof course
- Loose or hollow render, which needs re-rendering
Not sure which it is? You can send an email to info@mrmastic.co.uk and we will tell you honestly before booking.
What we seal
- Copings & trims
- Brickwork movement joints
- Concrete & block
- Façade panels
- Render & cladding joints
- Joints between brick and frames
When to call us in Diuranais
Joints sealed without backing rod, or far too deep, rarely last. Sealant bonded to three sides has nowhere to go and rips as the joint opens.
If you can see any of these, it’s time to have the joints looked at:
- Rain getting behind render or cladding at a joint
- Sealant that has lost its bond to the brick or render
- Joints with sealant missing in places
- Failed seals between different materials
In and around Diuranais, as anywhere, good external mastic starts with a clean, dry, properly prepared joint.
Comparing quotes
- What product goes in the joint
- What guarantee comes with the work
- How much experience the applicator has
- Are they insured?
Aftercare tips
Aftercare is simple:
- Ask before painting over external sealant
- Show decorators and builders where the movement joints are
- Keep movement joints as flexible joints, not mortar
- Have failed joints looked at early
Have a quick look at the joints each spring. Splits, gaps at the edges or plants in the joint are early warning signs.
Gaps, plants or missing sealant in a joint are worth getting looked at. Earlier resealing means a smaller job and a better result.