Highland · Scotland
Lybster External Mastic
Sealing brickwork movement joints, render, cladding and façade joints for homeowners, landlords and businesses in Lybster. ARBOMaster approved applicators, fully insured, with a 12-month guarantee.
- Weathered mastic that no longer stretches
- Rigid filler in a joint that should flex
- Weeds or debris growing in open joints
What we do, step by step
All our tools and materials come with us in the van, so you do not need to buy or prepare anything. Once we’ve agreed what’s being done, we protect the area and start. It normally takes a few hours for a handful of joints, longer for a whole elevation. For a place like Lybster, longer drives are planned in advance. Tell us about tracks, gates, a ferry crossing or anything unusual about getting there.
- We look at every joint and agree a colour to suit the wall.
- Failed sealant is removed back to clean, sound faces.
- Backing rod goes in so the sealant can stretch between the two faces.
- We prime the faces where required.
- A low-modulus exterior sealant is gunned in and tooled to a neat finish.
Before we arrive
- Mention any sign-in or site rules at work premises
- Clear the area around the work
- Plan for the work area to be out of bounds to pets and children
Get a quote
There’s no standard price list. Instead, we give you a clear quote for your job. To get started, email us at info@mrmastic.co.uk.
Related advice
How we handle external mastic in Lybster
We cut out failed sealant, set the joint depth with closed-cell backing rod and reseal with a low-modulus exterior sealant. We pick a colour that sits well with the wall so the line blends in. We work on joints between brick and frames, copings & trims and façade panels, and common reasons people get in touch are damp patches traced to an open external joint and plants rooting in failed movement joints.
Stone walls need a stone-friendly sealant, as acetoxy products can attack some stone. On newer homes, the movement joints and roofline trims are what need watching.
Your job is guaranteed for a year, as with all our work.
- Where
- Lybster (KW3)
- Wider area
- Highland
- Cover
- One year on every job
- Quote
- A clear price before we start
- info@mrmastic.co.uk
- Page updated
- 26 October 2026
When something else is needed
A few problems are outside what sealant work can do:
- Subsidence or other structural problems
- Rising or penetrating damp from elsewhere in the wall
- Cutting new joints into brickwork, which is building work rather than sealant work
Not sure which it is? You can drop us a line at info@mrmastic.co.uk and we’ll tell you honestly before you book.
Where we work in Lybster
- Copings & trims
- Brickwork movement joints
- Façade panels
- Joints between brick and frames
- Concrete & block
- Render & cladding joints
External mastic in Lybster: local notes
Lybster is within about 1 mile of the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. That is hard on movement joints and outside wall joints, especially on the side facing the sea. Plenty of Scottish homes have harled walls, and where harling meets frames, pipes and other materials, the joint needs a flexible sealant that grips a rough surface.
If you live in an older home near St Mary's Church, older walls, gutters and the joints where extensions meet them need a flexible sealant. In and around Lybster, as anywhere, good external mastic starts with a clean, dry, properly prepared joint.
Lybster is about 22 miles south-east of Thurso, in Highland. Jobs in Lybster get the same care as everywhere else we work: the old material taken out, joints prepared properly and a 12-month guarantee. Lybster is one of 253 towns and villages in Highland we cover for external mastic.
Here we cover the KW3 postcode area for external mastic. That includes homes and businesses on Main Street, Jeffrey Street and Russell Street and the roads around them. If you’re just outside Lybster, we cover Dunbeath (6 miles south-west), Balnabruich (7 miles south-west), Thrumster (8 miles north-east), Whiterow (11 miles north-east) and Haster (11 miles north-east). If you’re somewhere remote, the job takes a little more planning, so mention it when you ask for a quote.
Local landmarks in Lybster
Nearby you will also find Swiney Castle (1.4 miles south-west) and Waterlines (within half a mile south). For a walk, there’s Ben-a-chielt.
DIY versus a professional finish
Sealing over old silicone is the commonest DIY error. New silicone will not bond to old, so it peels away and traps moisture behind it. All the old material has to come out first.
Not every job suits DIY: work at height, external movement joints, fire-rated sealant and large areas call for the right materials, safe access and experience.
Also in Lybster
What happens if it’s left?
A failed movement joint lets water into the wall. Resealing early keeps the job to the joint itself, rather than the wall around it. When the nearest tradesperson is a drive away, it’s tempting to leave a small leak, but water through a failed joint keeps working away until it’s fixed.
What it costs depends on how much there is to do, how much old material has to come out and how easy the joints are to reach. You’ll have a clear quote before any work starts, so you know where you stand.
Why book with us
- A choice of colours where the product allows
- Rated 4.9 stars on Google
- Old sealant always removed completely
- Anti-fungal sanitary silicone in wet areas
Read how sealant jobs are priced and customer reviews.
Questions from Lybster
Is Lybster in your area for external mastic?
Yes. We work across all of Scotland, and Lybster is part of that. Just send an email to info@mrmastic.co.uk with a few details of the job, and we will give you a clear quote.
Is Lybster within the area you cover?
Yes. Lybster is within the area we cover, which takes in towns, villages and rural addresses. We work across all of Scotland. Let us know about access, parking and anything unusual about getting there when you book.
How often do external joints need resealing?
It varies from wall to wall: sunny, exposed elevations and busy joints wear faster. A yearly look will tell you when they need doing. Our work comes with a one-year guarantee.
Are you fully insured?
Yes. We are fully insured, and we can confirm the details when we quote.
Do you seal joints where cladding meets other materials?
Yes. Materials like render, brick, metal and uPVC all move differently, so a flexible sealant is needed where they meet. We choose one that suits both surfaces.
Are you an approved applicator?
Yes. We are approved under the ARBOMaster scheme, which is run for the Arbo sealant brand.
Does someone need to be in?
If the work is inside, we need someone to let us in. After that, you can carry on with your day.
Can you work on commercial sites?
Yes. We work in offices, washrooms, hotels and other commercial premises. We can talk about working times when we quote.
Landlord and commercial work in Lybster
We work for landlords and letting agents as well as householders. Resealing between tenancies is a simple way to keep a property in good order.
We regularly work with letting and managing agents. Send the address, what’s needed and the access arrangements and we will quote.
Keeping the joints in good condition
No joint lasts for ever, but care makes a real difference. Our tips:
- Keep water from gutters off the wall
- Clear growth from the base of walls and joints
- Get split or bare joints resealed while the damage is small
- Walk round the building once a year and look at the joints
Keep pressure washers away from the sealant. A strong jet can damage the edges of the bead and let water in behind.
Leaks behind façade panels and render often go unseen. When it finally shows inside, the joint may have been open for years so early resealing is worth it.
Different surfaces, different methods
Joints between dissimilar materials
Wherever two materials meet, they move differently. A flexible sealant bridges the two so neither cracks the other.
Brickwork movement joints
Vertical joints in long brick walls let the brickwork expand without cracking. We reseal them with a low-modulus sealant over backing rod coloured to suit the wall.