Argyll and Bute · Scotland
Innellan External Mastic
Sealing brickwork movement joints, render, cladding and façade joints for homes and businesses in Innellan and across Argyll and Bute. ARBOMaster approved applicators, fully insured, with a 12-month guarantee.
- Weeds or debris growing in open joints
- Joints with sealant missing in places
- Old sealant gone brittle and cracked
External mastic in Innellan
Short cuts in external joints show up within a season or two. New sealant over old, joints packed with mortar and beads with no backing all tend to fail early. We strip the joint back and start again. If you’re dealing with failed seals between different materials and old sealant gone brittle and cracked, we can put it right, whatever the surface.
Across smaller places in Scotland, stone and harled cottages, farm buildings and newer houses often stand exposed to wind and rain. Gutter joints and wall joints take a battering, so they need a sealant that moves with the building.
Every job comes with a one-year guarantee.
- Place
- Innellan (PA23)
- Wider area
- Argyll and Bute
- Cover
- A year, on every job
- Quote
- A clear price before any work starts
- info@mrmastic.co.uk
- Page updated
- 26 October 2026
What affects the quote in Innellan
Your quote is based on your job. We take into account:
- How many rooms, windows or areas are involved
- Access and height
- Mould in or behind the old joints
- When we can work, for business premises
Some things make a job bigger or smaller: the old material and how easily it comes out, any mould to treat, and whether we need extra access for height. We take all of that into account in your quote.
Asking for a quote
You do not need to know the technical terms. Just tell us:
- Any previous sealing or DIY work
- Any access issues, like height or stairs
- Pictures of the joints, sent by email
- The rough size of the job
Quotes start with a quick conversation. Describe the problem, the location and the size of the job, and we’ll talk you through what we’d do. When it suits you, send an email to info@mrmastic.co.uk.
How the job changes by surface
Render joints
Cracks along render joints let water in behind the coat. A sound joint keeps the render dry behind and protects the render itself.
Concrete and blockwork
Wide joints in concrete need the depth controlling carefully. We size the backing rod to the gap so the sealant isn’t too deep.
Landlord and commercial work in Innellan
Failed sealant is one of the commonest items on a check-out report, and it’s easy to sort out between tenants. Several properties can go on one quote.
Landlords and agents in Innellan can book us as well as householders. Sealant work between tenants keeps a property looking cared for.
Do you need external mastic in Innellan?
Joints sealed without backing rod, or far too deep, rarely last. If the sealant sticks to the back as well as the sides, it cannot stretch and rips as the joint opens.
These are the problems we’re asked about most:
- Sealant pulling away from one side of the joint
- Old sealant gone brittle and cracked
- Joints pointed up with cement by mistake
- Failed sealant between panels on a façade
For landlords with property near Wemyss Bay station, outside joints that have cracked can let damp into a rental, so check them between lets.
Before booking anyone
- Is the old sealant removed completely?
- What guarantee comes with the work
- Who does the work, and how experienced they are
- Is VAT in the price?
When it isn’t the sealant
A few problems are outside what sealant work can do:
- Rising or penetrating damp from elsewhere in the wall
- Cracks in the bricks or render themselves, away from the joints
- Walls that need new movement joints cut into them
If you are not sure, just send an email to info@mrmastic.co.uk and we will give you a straight answer.
Surfaces we seal
- Joints between brick and frames
- Concrete & block
- Façade panels
- Render & cladding joints
- Brickwork movement joints
- Copings & trims
Innellan buildings and the weather
Innellan 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. Plenty of Scottish homes have harled walls, and joints where harling meets other materials need a sealant that can grip and flex.
Castle Toward, about 2.4 miles south-west, is one of the historic houses in the wider area around Innellan, and older homes nearby need a sealant that suits their walls.
Innellan is about 8 miles south-west of Greenock, in Argyll and Bute. We carry out external mastic for homes and businesses in Innellan and the surrounding area. Our area takes in 118 places across Argyll and Bute, large and small. Glasgow is on our list too, about 27 miles from Innellan.
Every address in PA23 is within our area for external mastic, from the main roads to the quietest streets. You will find streets such as Newton Road, Shore Road and Wyndham Road, and we cover them all. We also cover the places around Innellan: Toward (1 mile south-west), Wemyss Bay (3 miles east), Bullwood (3 miles north), Skelmorlie (3 miles south-east) and Inverkip (4 miles east). Within a short drive, we also cover Helensburgh (12 miles north-east), Dunoon (5 miles north), Rothesay (5 miles south-west), Rhu (11 miles north-east), Garelochhead (14 miles north) and Port Bannatyne (5 miles south-west). Island and remote addresses take a little more planning, so tell us where you are when you ask for a quote.
Around Innellan
Innellan’s nearest station is Wemyss Bay station, roughly 3 miles east. Other landmarks nearby include Cowal Community Hospital (5 miles north) and Knockamillie Castle (0.6 miles north-east).
DIY versus a professional finish
What a professional job adds is preparation and the right product. Joints are cleaned back to sound surfaces and dried, and the sealant is chosen for how the joint moves and where it is, then guaranteed for a year.
Overfilling a joint is a classic DIY mistake. A thick, smeared bead looks untidy and doesn’t move well, and the joint depth matters as much as the finish.
Innellan: your questions answered
Is external mastic in a coastal place like Innellan any different?
Coastal homes put outside sealant through more weather than inland ones, so the choice of sealant and the preparation matter even more. It’s worth checking the walls that face the sea first.
Do you work for landlords with property near Wemyss Bay station?
Yes, rental work is part of what we do. Just email us at info@mrmastic.co.uk and tell us about the property, and we will send you a clear quote.
Do you take out the old sealant first?
Yes, always, and completely. New sealant will not bond properly to old, so any old material comes out before anything new goes in.
Where do you work from?
We are a Crawley-based firm, with over 20 years’ experience. Our area covers South East England, London and Scotland.
Which products do you use?
Products from Arbo and Everbuild, among others, picked for each joint. We’ll tell you what we are using and why.
How do I get a quote for external mastic in Innellan?
Size, access and the old material all affect the cost. Ask us for a quote.
Will you leave a mess?
No. We work neatly, protect the area around the joints and tidy up afterwards.
Are you an approved applicator?
Yes. Mr Mastic is an ARBOMaster approved applicator and we are fully insured too.
What happens on the day
Before we leave, we go over the finished joints with you. The work normally takes a few hours for a handful of joints, longer for a whole elevation, depending on how much there is to do. 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.
- First we look over the joints with you, agree which to renew and talk through access.
- Old sealant and any debris are cut and raked out.
- We clean both faces of the joint and prime them where the product calls for it.
- We push in closed-cell backing rod so the sealant is the right depth and bonds to the sides only.
- The new sealant, chosen to suit the brick or render, is applied and tooled to a neat finish.
How to prepare
- Tell us about any water getting in
- Where the joints are inside, avoid wetting them before we arrive
- Plan for the work area to be out of bounds to pets and children
Get a quote
Getting a quote is simple: let us know the job and the location and its rough size. Photos by email help us understand the job, and we will come back to you with a quote.