Highland · Scotland
Corran External Mastic
We cover Corran for sealing brickwork movement joints, render, cladding and façade joints. Old material cut out, joints cleaned and sealed neatly and every job guaranteed for a year.
- Weeds or debris growing in open joints
- Damp patches traced to an open external joint
- Movement joints with cracked, split or missing sealant
External mastic in Corran, done properly
As ARBOMaster approved applicators, we choose exterior sealants to suit the joint and the surfaces. Some surfaces need a primer before sealing and we use one wherever it does. If you have weeds or debris growing in open joints and joints with sealant missing in places, we can help, whatever the surface.
In and around a place like Corran, many buildings face open ground and take the full weather. Gutter joints and wall joints take a battering.
The work is guaranteed for twelve months. If something isn’t right with it in that time, tell us and we’ll put it right.
- Place
- Corran (PH33)
- Region
- Highland
- Cover
- A year, on every job
- Quote
- A clear price before work begins
- info@mrmastic.co.uk
- Updated
- 26 October 2026
How to look after the new joints
Good habits help new joints last longer. A few tips:
- Fix overflowing gutters above sealed joints
- Ask before painting over external sealant
- Clear growth from the base of walls and joints
- Make sure movement joints are not pointed over
Don’t paint over the new sealant unless we’ve said the product is paintable. Paint can crack on a flexible joint.
If you can see gaps, plants or bare sections in a joint, have it checked. Early work is quicker and leaves a better finish.
Quotes for external mastic in Corran
The quote reflects the job in front of us. We take into account:
- How much old sealant there is and how hard it is to remove
- Which sealant suits the joint
- How many areas need sealing
- Any working-time requirements on site
A failed joint rarely gets cheaper to fix by waiting, as water and mould keep getting in. If you are unsure, drop us a line at info@mrmastic.co.uk for an honest opinion and a quote.
Asking for a quote
A few details help us give you an accurate quote. When you get in contact, it helps to mention:
- If it’s domestic, commercial or a hotel
- The rough size of the job
- Any access issues, like height or stairs
- Where the job is, and your postcode
Want a quote for external mastic? Please drop us a line at info@mrmastic.co.uk and tell us about the job. You will know what we plan to do, and what it will cost, before any work begins.
Landlords, agents and businesses in Corran
If you manage several properties in or around Corran, several properties can be quoted together. Send us the addresses and the work at each, and photos by email help.
In hotels, rooms out of use cost money, so we plan the work room by room around your bookings where we can. Hotel work is part of what we do, alongside homes and businesses.
When to call us in Corran
Many joints fail because they were sealed too deep or with nothing behind them. If the sealant sticks to the back as well as the sides, it can’t stretch and rips as the joint opens.
Signs it’s time to call us include:
- Failed sealant between panels on a façade
- Joints pointed up with cement by mistake
- Sealant pulling away from one side of the joint
- Moss and dirt in joints with no sealant left
In and around Corran, as anywhere, good external mastic starts with a clean, dry, properly prepared joint.
Comparing quotes
- What happens if they find a problem under the old sealant
- Whether VAT is included
- How the joint is cleaned and prepared
- Whether the sealant suits the joint
How the visit works
When we get to you, we check the joints match what you told us. If we find something unexpected, we talk it through with you first. Most jobs then take anything from a few hours to several days, depending on the building. Outside jobs in Corran need a dry day, because sealant will not bond to a wet joint, so an outdoor job can move if the forecast changes. Indoor work goes ahead whatever the weather.
- 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.
- The exterior sealant is applied, tooled and checked along its length.
How to prepare
- Keep children and pets away from the work area
- Tell us about any water getting in
- Mention any parking rules near the property
Getting a quote
Asking for a quote is easy: let us know the job and the location and its rough size. Photos by email help us understand the job, and we will take it from there.
Advice
Places near Corran
What else we do in Corran
Common questions in Corran
Do you cover Corran for external mastic?
Yes, Corran is within the area we cover. Our work covers the whole of Scotland. Just email us at info@mrmastic.co.uk with a few details of the job, and we will give you a clear quote.
Is external mastic in a coastal place like Corran any different?
Coastal weather is harder on outside sealant: there’s more wind-driven rain and, closer to the shore, salt in the air. Choosing the right sealant for the frame and wall, laid at the right depth, helps it last.
Why is there a gap in my brick wall?
A movement joint is a planned break in the wall that absorbs expansion and shrinkage. It’s sealed with a flexible sealant, not mortar.
Do I have to be there?
If the work is inside, we need someone to let us in. After that, you can carry on with your day.
How long before the joint can be used?
Most sealants are touch-dry well before they’re fully cured. We’ll give you the cure time for the product we used.
Can a movement joint be filled with mortar?
No, not if it’s a movement joint. Filling it with mortar defeats its purpose, and the wall may crack nearby. We will reseal it with a flexible sealant.
Should I try DIY first?
For a simple, easy-to-reach joint, a careful DIYer can do a reasonable job. Most DIY failures come from sealing over old material, wet joints or too much sealant.
Is there a guarantee?
Yes: twelve months. If anything isn’t right with the work within the year, let us know and we’ll sort it.
External mastic in Corran: local notes
Corran is close to the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. That’s hard on movement joints and outside wall joints, especially on the side facing the sea. The west of Scotland is wetter than the east, which means movement joints and outside wall joints has to cope with a lot of rain.
Homes close to Ardgour Parish Church include some older properties, and the joints between older walls, newer extensions and the roofline need a sealant that can move.
Corran is in Highland. Homes, rented property, offices and hotels in Corran is covered for external mastic, old or new, large or small. Every job comes with our one-year guarantee. 253 places in Highland are on our list, large and small. You can also see our page for Glasgow, roughly 71 miles from Corran.
We cover every part of the PH33 postcode area for external mastic. We also cover the places around Corran: Clo Mhuillin (1 mile south-west), Inchree (1 mile east), Kentallen (3 miles south), Duror (5 miles south) and Ballachulish (5 miles south-east). We also work in nearby towns such as Fort William (8 miles north-east), Caol (10 miles north-east), Inverlochy (9 miles north-east) and Kinlochmore (11 miles east). Island and remote addresses take a little more planning, so tell us where you are when you ask for a quote.
Around Corran
For a walk, there’s Ardsheal Hill and Lochan na Luireach.
When it isn’t the sealant
We’ll always be straight with you, so here’s what new sealant will not do:
- Walls that need new movement joints cut into them
- Subsidence or other structural problems
- Loose or hollow render, which needs re-rendering
If you are not sure, just drop us a line at info@mrmastic.co.uk and we’ll give you a straight answer before you book.
What we seal
- Render & cladding joints
- Copings & trims
- Concrete & block
- Façade panels
- Joints between brick and frames
- Brickwork movement joints
Should I try it myself first?
The difference is mostly in the preparation and the product. We take joints back to clean, dry surfaces, and the sealant is matched to the joint and its conditions, and the work is guaranteed for a year.
Too much sealant is as bad as too little. A heavy bead looks messy and copes badly with movement, and getting the depth right matters as much as the look.