Highland · Scotland
External & façade joints in Carndu, Highland
Sealing brickwork movement joints, render, cladding and façade joints for Carndu, backed by a 12-month guarantee. Call for a quick quote.
- Failed seals between different materials
- Joints where the bead has come unstuck
- Rigid filler in a joint that should flex
The process
Every visit runs the same way: we check the joints, mask and protect the surrounding surfaces, carry out the job and tidy away. Most jobs take anything from a few hours to several days, depending on the building. In smaller Scottish places, parking is normally less of an issue than access and distance. Tell us how to find the property and how to reach the work.
- 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.
- We gun in low-modulus sealant and tool it neatly.
Getting ready for the visit
- Mention if the joints have been sealed before
- Mention any parking rules near the property
- Mention any tricky access
Getting a quote
There’s no standard price list, because every job is different. Instead, we give you a clear price for your job. To get started, drop us a line at info@mrmastic.co.uk.
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External mastic in Carndu
As ARBOMaster approved applicators, we choose exterior sealants to suit the joint and the surfaces. Some surfaces need a primer before sealing, and we don’t skip that step. We work on joints between brick and frames, façade panels and render & cladding joints, and people most often call us about leaking joints around cladding and façade panels and hard, crazed mastic that has stopped moving.
Outside joints can only be sealed when they’re dry, so work in Carndu depends on the weather, and longer journeys are planned in advance. Tell us how to reach each wall, gutter and roofline.
You’re covered for a year from the day we finish. If there’s a problem with it, please send an email to info@mrmastic.co.uk.
- Place
- Carndu (IV40)
- Region
- Highland
- Guarantee
- A year, on every job
- Price
- A clear quote up front
- info@mrmastic.co.uk
- Updated
- 26 October 2026
DIY sealant or a professional job?
Too much sealant is as bad as too little. A thick, smeared bead looks untidy and does not move well, and getting the depth right matters as much as the look.
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 fails, we can still redo it.
Places near Carndu
Other services in Carndu
What the job involves on each surface
Concrete and blockwork
Blockwork and concrete shrink over time and move with the seasons. Their movement joints are sealed over backing rod with a flexible sealant.
Cladding and façade panels
Panels heat up and cool down quickly, so the joint sealant has to cope with frequent movement. We choose the product to suit.
Questions from Carndu
Do you work for landlords with property near Stromeferry station?
Yes, we work for landlords and letting agents. Just email us at info@mrmastic.co.uk and tell us about the property, and we’ll send you a clear quote.
Will you come out to Carndu?
Yes, we do. Our work covers the whole of Scotland, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.
What do you need from me for a quote?
Where the job is, what the problem is and roughly how big it is. If you can, email a few pictures.
Will the old sealant be removed?
Yes. Sealing over old sealant is the main reason resealing fails early, so we never do it.
Can a movement joint be filled with mortar?
No. Cement or mortar cannot stretch. If it has already been filled, we can normally cut it out and reseal it.
Do you guarantee your work?
Yes. All our work carries a 12-month guarantee.
Can you seal joints between render and window frames?
Yes. We cut out the old sealant, prepare both faces and reseal with a flexible exterior product. We pick a colour that works with both materials.
Do you do commercial work?
Yes. We have worked for hotels, offices and other businesses, and we are fully insured.
Do you need external mastic in Carndu?
Poor preparation causes many early failures: joint faces that were dusty or damp, unprimed where they needed it, or still carrying old sealant. The new sealant then lets go long before it should.
People generally contact us after spotting one of these:
- Moss and dirt in joints with no sealant left
- Old sealant gone brittle and cracked
- Cracked joints where brick meets render or frames
- Movement joints filled with mortar instead of sealant
For an older house near a landmark such as St Duthuc's Roman Catholic Chapel, an extension built onto an older house moves differently, and the joint between them takes the strain.
What your quote should include
- Whether they seal over old material or remove it
- Whether VAT is included
- What happens if the job turns out different
- Which sealant they’ll use, and why
Looking after it afterwards
Aftercare is simple:
- Keep water from gutters off the wall
- Avoid pressure-washing directly into sealant joints
- Never let anyone fill a movement joint with mortar
- Ask before painting over external sealant
Keep pressure washers away from the sealant. High-pressure water can lift the edges.
Act while the splits are small. At that stage it’s a simple cut out and reseal with no damage behind it to deal with.
For landlords and businesses
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 be quoted together.
We also work for businesses, from offices to washrooms and kitchens. On commercial sites, working times can be discussed when we quote.
How we quote for external mastic
We don’t publish a price list, because jobs vary so much. What we look at:
- The type of sealant required
- Access and height
- How many areas need sealing
- The amount of work
Commercial jobs are quoted on the same basis as homes: the amount of work, the access and the products needed. Call for a quick quote and we’ll go through it with you.
What to tell us for a quote
To make quoting easier, let us know:
- Roughly how big the job is
- Pictures of the joints, sent by email
- Access, such as stairs, a lift or height
- The address or postcode of the job
Call for a quick quote, or send an email if you’d rather. Describe what needs sealing and we will talk you through the work.
Outside joints around Carndu
Carndu 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. Both are hard on movement joints and outside wall joints, which can dry out and crack sooner where a building faces the weather. Carndu is in the west of Scotland, which is wetter than the east, which means movement joints and outside wall joints has to cope with a lot of rain.
If you let a flat or house near Stromeferry station, failed wall and movement joints let damp in, so they’re worth checking between tenancies.
Carndu is in Highland. From the centre of Carndu to the outskirts, external mastic is available for homes and businesses alike. Our area takes in 253 places across Highland, from the larger towns to small villages.
Postcode districts we cover here for external mastic: IV40. You’ll find streets such as Helen Street, Princes Street and William Street, all of which we cover. We also cover Bundalloch (1 mile north-east), Dornie (1 mile south-west), Auchtertyre (3 miles west), Inverinate (5 miles south-east) and Reraig (5 miles west). Remote and island addresses need a little more planning, so please mention your location when you email us at info@mrmastic.co.uk.
Near you in Carndu
For rail, the closest station is Stromeferry station, about 4.8 miles north-west. A little further out are Eilean Donan Castle (1.1 miles south-west). Green spaces nearby include Loch Anna.