Argyll and Bute · Scotland
Dunollie External Mastic
Sealing brickwork movement joints, render, cladding and façade joints for Dunollie, backed by a one-year guarantee. Call for a quick quote.
- Weathered mastic that no longer stretches
- Cracked joints where brick meets render or frames
- Joints with sealant missing in places
External mastic for homes and businesses in Dunollie
We’re ARBOMaster approved applicators, and each external joint gets a sealant suited to it. Some surfaces need a primer before sealing, and we do not skip that step. We work on concrete & block, render & cladding joints and joints between brick and frames, and common reasons people get in touch are old sealant gone brittle and cracked and damp patches traced to an open external joint.
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.
Whatever the size of the job, it’s backed by our one-year guarantee in Dunollie and across Argyll and Bute.
- Location
- Dunollie (PA34, PA37)
- Region
- Argyll and Bute
- Guarantee
- A year, on every job
- Quote
- A clear price before we start
- info@mrmastic.co.uk
- Last updated
- 26 October 2026
Why deal with it now?
An open joint keeps letting water into the wall with every downpour. In cold weather, frost can damage wet brick and render near the open joint, so the damage spreads beyond the joint. When the nearest tradesperson is a drive away, it’s tempting to leave a small leak, but water behind a failed seal does the most damage when nobody’s watching.
No two jobs are quite the same, so each one gets its own quote. The number of joints, how easy they are to reach and the sealant needed all make a difference, and we will explain the quote if you ask.
What you get with us
- Sanitary silicone with an anti-fungal additive in wet areas
- Tidy, careful work
- A 12-month guarantee on all work
- Old sealant always removed completely
DIY sealant or a professional job?
The biggest DIY mistake is sealing over old sealant. New silicone won’t bond to old, so it lifts and traps water and mould underneath. Everything old must be removed first.
Some jobs are best left to a professional: high-level joints, fire-rated gaps, external movement joints and big jobs call for the right materials, safe access and experience.
What affects the quote in Dunollie
Some jobs are bigger than they look, and some smaller. The main factors:
- When we can work, for business premises
- How easy the joints are to reach
- How many rooms, windows or areas are involved
- Whether old sealant or filler has to be cut out
What you pay reflects the work, not guesswork. That’s why we ask about the job first.
Asking for a quote
A few details help us give you an accurate quote. When you ask for a quote, tell us:
- What’s wrong with the joints now
- Any access issues, like height or stairs
- Pictures of the joints, sent by email
- The rough size of the job
To get a quote, email us at info@mrmastic.co.uk with the location and a short description of the problem. You’ll have a clear quote before we start.
Dunollie buildings and the weather
Dunollie 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. Harled (roughcast) walls are common in Scotland, and joints where harling meets other materials need a sealant that can grip and flex.
In the older streets around Christ Church Dunollie, old and new materials meet at the roofline and walls, which is where sealant earns its keep. For site and facilities teams at buildings such as Oban High School, its movement joints, gutters and trims need looking after like any other building’s. Letting a property close to Oban station? Then split movement joints are easy to miss on a rental until damp shows inside.
Dunollie is about 1 mile north of Oban, in Argyll and Bute. Wherever you are in the PA34 postcode area, our applicators can take on external mastic. Our area takes in 118 places across Argyll and Bute. Glasgow is on our list too, about 61 miles from Dunollie.
Every address in PA34 and PA37 is within our area for external mastic, from the main roads to the quietest streets. Local streets include Croft Road, Rowan Road and Castle Road. With the A85 close by, Dunollie is simple for us to get to. Neighbouring places we cover for external mastic include Oban (1 mile south), Ganavan (1 mile north), Dunbeg (2 miles north-east), Kilmore (4 miles south-east) and Connel (4 miles north-east). Being one of Argyll and Bute’s larger places, Dunollie has homes, rented property and businesses of every kind. If you are somewhere remote, the job takes a little more planning.
Local landmarks in Dunollie
We work in homes and buildings around Oban Inn, among other places. Dunollie’s nearest station is Oban station, roughly 0.6 miles south. Other landmarks nearby include Lorn and Islands Hospital (1.5 miles south) and Oban Museum (less than half a mile south). For a walk, there’s Lochan Dubh.
Landlord and commercial work in Dunollie
Failed sealant is one of the commonest items on a check-out report, and it’s easy to sort out between tenants. We can quote for more than one property at once.
Whether it’s one flat or a portfolio, you get the same standard of work: the old material taken out, careful preparation and a 12-month guarantee.
Your questions about external mastic in Dunollie
I let a flat near Oban station. Can you help?
Yes. We work for letting agents and landlords as well as householders. You can drop us a line at info@mrmastic.co.uk with the details for a clear quote.
Is Dunollie within the area you cover?
Yes, smaller places are covered as well as towns. We work across all of Scotland. Let us know about access, parking and anything unusual about getting there when you book.
Should I point up the gap in my brickwork?
No. Rigid materials cannot move with the wall, so the joint stops doing its job. If it has already been filled, we can usually cut it out and reseal it.
Do you take out the old sealant first?
Yes. We cut out all the old sealant and clean the joint before applying anything new.
Should I try DIY first?
That depends on the joint. Work at height, movement joints, fire-rated gaps and large areas are best left to a professional, while a short indoor joint may be within reach.
Where is Mr Mastic based?
Our base is Crawley. Our area covers South East England, London and Scotland.
Does someone need to be in?
It depends on the job. For work indoors, someone needs to let us in, and for outside work we will agree access with you when we book.
Why is there a gap in my brick wall?
Most straight vertical gaps in brickwork are movement joints. It lets the bricks expand without cracking, and it should be sealed with a flexible sealant.
Also in Dunollie
The process
We work through the job in order: protect, prepare, seal, tidy. For most jobs that takes a few hours to a few days, depending on the length of joint and the access, and the area is left clean. Around Dunollie, distance and access matter more than parking. Tell us how to find the property and how to reach the work.
- First, the joints are inspected and the access agreed.
- We cut out the old mastic and rake out anything in the joint.
- Joint faces are cleaned back and primed if the sealant needs it.
- Backing rod sized to the joint goes in to set the depth.
- We apply the sealant, tool it and check the whole run.
Preparing for the visit
- For business premises, tell us about site rules or sign-in
- Clear the area around the work
- Try not to wet indoor joints just before the visit
Getting a quote
If you are in Dunollie and need external mastic, drop us a line at info@mrmastic.co.uk. Tell us what the problem is and where, and we will agree the price before any work begins.
Read more
Surface by surface
Render joints
Cracks along render joints let water in behind the coat. Resealing the joints early keeps water out.
Copings and trims
Metal and stone copings both move with temperature, so a flexible sealant suits them best.
What we can’t put right
We’d rather tell you now than do work that won’t last, so here’s what sealant cannot put right:
- Movement that’s more than a sealant joint can take
- Walls that need new movement joints cut into them
- 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 booking.
Joints and surfaces we work on
- Concrete & block
- Render & cladding joints
- Copings & trims
- Joints between brick and frames
- Façade panels
- Brickwork movement joints