Highland · Scotland
Leachkin External Mastic
External mastic in Leachkin from a team with over 20 years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Panel joints letting water in
- Damp patches traced to an open external joint
- Gaps where render, brick and frames meet
External mastic in Leachkin, 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. We are often asked to deal with leaking joints around cladding and façade panels and joints where the bead has come unstuck, across brickwork movement joints, render & cladding joints and joints between brick and frames.
External sealant needs dry surfaces, so outdoor work around Leachkin is planned around the weather. Tell us how to reach each wall, gutter and roofline.
All our work comes with our one-year guarantee, wherever you are in Highland.
- Place
- Leachkin (IV3)
- Wider area
- Highland
- Cover
- 12 months on all our work
- Quote
- A clear quote up front
- info@mrmastic.co.uk
- Page updated
- 26 October 2026
What happens on the day
You do not need to clear the whole room or building before we come, only the area right around the joints. Everything nearby is protected, and the work takes a few hours for a handful of joints, longer for a whole elevation for a typical job. Outside jobs in Leachkin need a dry day, because sealant will not bond to a wet joint, so external jobs may need to move if the day turns wet. Indoor work goes ahead whatever the weather.
- We start by checking each joint, agreeing the ones to redo and how we’ll 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.
- We push in closed-cell backing rod so the sealant is the right depth and bonds to the sides only.
- A flexible exterior sealant is applied and tooled in a colour to suit the wall.
Getting ready for the visit
- Try not to wet indoor joints just before the visit
- Let us know if you’ve seen damp or leaks
- Keep children and pets away from the work area
How to 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. You’ll have a clear quote before we start.
Advice
Walls and rooflines in Leachkin
Leachkin is within about 2 miles of 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. Private landlords in Scotland must meet the Repairing Standard, which includes keeping a home wind and watertight, and sound outside sealant is part of that.
If you let a flat or house near Inverness station, split movement joints are easy to miss on a rental until damp shows inside. In the older streets around Church, an extension built onto an older house moves differently, and the joint between them takes the strain.
Leachkin is about 2 miles west of Inverness, in Highland. Homes, rented property, offices and hotels in Leachkin can book us for external mastic, old or new, large or small. The work is guaranteed for a year. Leachkin is one of 253 places in Highland where we work.
Here we cover the IV3 postcode area for external mastic. If you are just outside Leachkin, we cover Merkinch (1 mile north-east), Ballifeary (1 mile east), Inverness (2 miles east), Lochardil (2 miles south-east) and Longman (2 miles north-east). Larger places within reach include Cradlehall (5 miles east), Dingwall (11 miles north-west), Hilton (3 miles east), Alness (15 miles north), Muir of Ord (8 miles north-west) and Fortrose (9 miles north-east). For island and remote addresses, a little more planning is needed, so mention it when you ask for a quote.
Landmarks near Leachkin
We work in homes and buildings around Whin Park, among other places. The closest station to Leachkin is Inverness station, roughly 2 miles east. Nearby you will also find Inverness Castle (1.8 miles east) and Craig Dunain Hospital (0.6 miles south). Green spaces nearby include Tomnahurich and Loch Dochfour.
Other services in Leachkin
What we cannot put right
We won’t take on work that won’t last, so here’s what sealant cannot put right:
- Cracked brickwork or render that needs a builder or plasterer
- Cutting new joints into brickwork, which is building work rather than sealant work
- Failed render or damaged cladding panels
If in doubt, send an email to info@mrmastic.co.uk and we will say what we think before you book.
What we seal
- Copings & trims
- Concrete & block
- Façade panels
- Brickwork movement joints
- Joints between brick and frames
- Render & cladding joints
Work for landlords, hotels and businesses
For anyone letting property in or around Leachkin, jobs at different addresses can be quoted together. Just tell us the addresses and what each one needs, and photos by email help.
We also work for property managers and facilities teams. We can quote a run of properties together, and we’re fully insured.
Common questions in Leachkin
Will you come out to Leachkin?
Yes, we do. We work across all of Scotland, and smaller places are part of that. Longer journeys are simply planned in advance.
Can you help a landlord with a rental near Inverness station?
Yes, we work for landlords and agents. Just send an email to info@mrmastic.co.uk and tell us about the property, and we will give you a clear price.
Is it OK to seal over old sealant?
No. New silicone won’t bond to old silicone, and it traps any mould or water underneath. We remove it all first.
What colours does the sealant come in?
The sealant colour is picked to suit the wall so the joint blends in. There’s a wide choice of exterior colours.
Can I add another job to the visit?
Yes, we can. More than one area can go on one quote.
Are you an approved applicator?
Yes. We’re an ARBOMaster approved applicator, which is run for the Arbo sealant brand.
How long does external mastic take?
That depends on how much there is to do, but most jobs take anything from a few hours to several days, depending on the building. We will tell you when we quote.
Where are you based?
Our base is in Crawley, and we work across South East England, London and Scotland.
Signs you need external mastic in Leachkin
If plants are growing out of a joint, the sealant has usually failed or was never there. Roots and dirt hold water against the wall and speed up the damage.
Signs it’s time to call us include:
- Movement joints filled with mortar instead of sealant
- Moss and dirt in joints with no sealant left
- Weathered mastic that no longer stretches
- Movement joints with cracked, split or missing sealant
Managing a site like Inverness High School? Then larger buildings have long runs of movement joint that eventually need resealing.
Questions to ask before you book
- How the joint is cleaned and prepared
- How long to leave it before use
- Whether they seal over old material or remove it
- What happens if they find a problem under the old sealant
DIY sealant or a professional job?
If you do try it yourself, take your time over the preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it does not work out, we can still put it right.
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.
Looking after it afterwards
Aftercare is simple, and it makes a real difference:
- Tell anyone working on the walls about the movement joints
- Keep soil, plants and ivy away from the joints
- Never let anyone fill a movement joint with mortar
- Have failed joints looked at early
Don’t paint over the new sealant unless we have said the product is paintable. Paint can crack on a flexible joint and spoil the finish.
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, all bigger jobs than a reseal.
Why deal with it now?
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. In a place like Leachkin, small leaks are easy to put off, but water through a failed joint keeps working away until it’s fixed.
The cost depends on the size of the job, how much old material has to come out and access to the work. We give a clear quote before we start.
What you get with us
- Anti-fungal silicone where joints get wet
- An ARBOMaster approved applicator
- We leave the area clean and tidy
- Domestic, commercial and hotel work
See our cost guide or customer reviews.