Highland · Scotland
External Mastic in Nairn
Sealing brickwork movement joints, render, cladding and façade joints for homes and businesses in Nairn and across Highland. ARBOMaster approved applicators, fully insured, with a 12-month guarantee.
- Moss and dirt in joints with no sealant left
- Brick movement joints where the sealant has split
- Joints pointed up with cement by mistake
External mastic in Nairn
Ground-floor and low-level joints are straightforward to reach. For joints higher up, give us some details of the building and we will confirm what’s needed to reach them safely. If you have brick movement joints where the sealant has split and moss and dirt in joints with no sealant left, we can help, on copings & trims, joints between brick and frames and render & cladding joints alike.
In a town like Nairn, older stone-built streets sit alongside newer estates with brick, render and uPVC rooflines. Older buildings tend to leak at gutter joints, newer ones at dried-out movement joints.
Every job is covered by our one-year guarantee.
- Location
- Nairn (IV12)
- Wider area
- Highland
- Guarantee
- One year on every job
- Quote
- Quoted before any work starts
- info@mrmastic.co.uk
- Last updated
- 26 October 2026
DIY sealant or a professional job?
Sealing over old silicone is the commonest DIY error. New silicone will not bond to old, so it lifts and traps water and mould underneath. All the old material has to come out first.
A DIY attempt does not rule out a professional job. We remove it and do the joint properly, so tell us about it when you ask for a quote.
How the visit works
Most of a good job is in the preparation, and we don’t rush it. Every joint is cleaned and dried before new material goes in. In total, it generally takes anything from a few hours to several days, depending on the building. Parking around Nairn is rarely difficult, though older streets in the centre can be tight. For flats, mention the shared stair or door entry system.
- We inspect the joints and agree which need resealing and how they’ll be reached.
- Old sealant and any debris are cut and raked out.
- The joint faces are cleaned and primed where the sealant needs it.
- Backing rod goes in next, setting the depth and keeping the sealant off the back of the joint.
- A flexible exterior sealant is applied and tooled in a colour to suit the wall.
How to prepare
- For business premises, tell us about site rules or sign-in
- Move anything stored near the joints
- Tell us if parking is tricky
How to get a quote
It all starts with a short chat. Describe the problem, the location and the size of the job. When it suits you, email us at info@mrmastic.co.uk.
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Questions from Nairn
Is external mastic in a coastal place like Nairn any different?
Near the coast, wind-driven rain and, nearer the shore, salt air make outside sealant work harder. Choosing the right sealant for the frame and wall, laid at the right depth, helps it last.
Is Nairn in your area for external mastic?
Yes, Nairn is within the area we cover. Our work covers the whole of Scotland. You can email us at info@mrmastic.co.uk and tell us what needs doing, and we’ll send you a clear quote.
Can new sealant go over the old?
No, and we never do. It may look fine at first, but the new layer lifts away from the old one. The old sealant has to come out completely.
Do I need to be at home?
If the work is inside, we need someone to let us in. Once we’ve agreed the job, you do not need to watch us work.
How much does external mastic cost in Nairn?
We don’t publish prices, because the cost depends on the job: how much there is, what’s there now, how we reach it and what it needs. You’ll get a clear quote before any work starts.
Do you work for landlords and businesses?
Yes, often. We can quote for several properties at once, and between tenancies is a good time for the work.
Do you hold any approvals?
Yes. We’re an ARBOMaster approved applicator, the approved applicator scheme for Arbo sealants.
Can I add another job to the visit?
Yes, we can. Several rooms, windows or areas can go on one quote.
External mastic in Nairn: local notes
Nairn 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. Harled (roughcast) walls are common in Scotland, and joints where harling meets other materials need a sealant that can grip and flex.
Rented homes near Nairn station change hands often, and failed wall and movement joints let damp in, so they’re worth checking between tenancies. Schools such as Nairn Academy are buildings too, and its movement joints, gutters and trims need looking after like any other building’s.
Nairn is about 15 miles north-east of Inverness, in Highland. Jobs in Nairn get the same care as everywhere else we work: the old material taken out, joints prepared properly and a 12-month guarantee. 253 places in Highland are on our list. There’s also a page for Aberdeen, about 72 miles away.
We work across IV12 for external mastic. Whether your property is on High Street, Millbank Street and Queen Street or anywhere close by, our applicators can take on the job. Nairn is on the A96 and A939, so it’s easy for us to get to with everything needed for external mastic. Neighbouring places we cover for external mastic include Kingsteps (1 mile north-east), Auldearn (2 miles east), Cawdor (3 miles south), Ardersier (6 miles west) and Dyke (7 miles east). Within a short drive, we also cover Inverness (15 miles south-west), Cradlehall (12 miles south-west), Merkinch (15 miles south-west), Hilton (15 miles south-west), Invergordon (13 miles north-west) and Crown (15 miles south-west). Nairn is one of the larger places we cover in Highland. For island and remote addresses, the job takes a little more planning.
What’s near Nairn
There’s a railway station in Nairn itself: Nairn station. Other landmarks nearby include Nairn Town and County Hospital (within half a mile south) and Highland Railway Museum (under half a mile south). For a walk, there’s Hill of Urchany and Loch Loy.
For landlords and businesses
Landlords and letting agents in Nairn can book us as well as householders. Resealing between tenancies keeps a property looking cared for before the next move-in.
Mouldy or split sealant often shows up at the end of a tenancy, and it’s easy to sort out between tenants. Several properties can go on one quote.
Do you need external mastic in Nairn?
Weeds, moss and debris in a joint are a sign the sealant has gone. Dirt and roots then trap moisture in the joint and make things worse.
Common reasons people contact us are:
- Damp patches traced to an open external joint
- Cracked joints where brick meets render or frames
- Hard, crazed mastic that has stopped moving
- Rigid filler in a joint that should flex
Homes close to The High Church and Church Hall include some older properties, and old and new materials meet at the roofline and walls, which is where sealant earns its keep.
Comparing quotes
- What the quote includes, VAT included or not
- What guarantee comes with the work
- What happens if they find a problem under the old sealant
- Whether all the old sealant comes out first
Surface by surface
Concrete and blockwork
The face of concrete or block is often dusty, so preparation is key. We prime where the sealant needs it before sealing.
Cladding and façade panels
Where a cladding system has its own specified sealant, we follow it or an approved alternative. Send us any details you have about the façade.
What sealant work can’t fix
A few problems are outside what sealant work can do:
- Cutting new joints into brickwork, which is building work rather than sealant work
- Cracked brickwork or render that needs a builder or plasterer
- Structural movement, which needs a surveyor or engineer
If in doubt, email us at info@mrmastic.co.uk and we will say what we think.
Surfaces we seal
- Copings & trims
- Joints between brick and frames
- Façade panels
- Concrete & block
- Render & cladding joints
- Brickwork movement joints
Leave it or put it right?
Done well, a resealed joint is a neat, straight line that suits the wall. A rushed bead with no backing looks untidy and doesn’t last. In Nairn, wind and rain soon get through failed outside joints. Indoors, failed sealant lets water into floors and ceilings.
Every job is a little different, so each one gets its own quote. Size, access and the product the joint needs all make a difference, and we’ll explain the quote if you ask.
Why Nairn clients choose us
- We agree the colour with you first
- Domestic, commercial and hotel work
- A choice of colours where the product allows
- We never seal over old sealant
Take a look at how sealant jobs are priced or customer reviews.