Argyll and Bute · Scotland
Dunbeg External Mastic
Problem with your movement joints in Dunbeg? We cut out the old, prepare the joints and apply the right sealant, with a 12-month guarantee.
- Movement joints with cracked, split or missing sealant
- Rigid filler in a joint that should flex
- Leaking joints around cladding and façade panels
Aftercare tips
Good habits help new joints last longer. A few tips:
- Avoid pressure-washing directly into sealant joints
- Keep soil, plants and ivy away from the joints
- Never let anyone fill a movement joint with mortar
- Keep water from gutters off the wall
If you have more work done on the wall, such as new render, cladding or an opening, show the contractor the movement joints. They should be kept open and resealed, not filled.
Act while the splits are small. Then it’s a straightforward cut-out and reseal with no damage behind it to deal with.
About our external mastic in Dunbeg
A movement joint is only as good as its depth. Closed-cell backing rod sets the depth and stops the sealant sticking to the back, so it bonds to the two sides only and can stretch. We are often asked to deal with movement joints filled with mortar instead of sealant and old sealant gone brittle and cracked, on joints between brick and frames, concrete & block and brickwork movement joints.
External sealant needs dry surfaces, so outdoor work around Dunbeg is planned around the weather, and longer journeys are planned in advance. Tell us how to reach each wall, gutter and roofline.
You get a one-year guarantee, the same in Dunbeg as everywhere else we work.
- Location
- Dunbeg (PA37)
- Region
- Argyll and Bute
- Guarantee
- A year, on every job
- Price
- Quoted before any work starts
- info@mrmastic.co.uk
- Last updated
- 26 October 2026
Dunbeg buildings and the weather
Dunbeg is close to the coast, and homes near the sea take more wind-driven rain, with salt in the air closer to the shore. Both are hard on movement joints and outside wall joints, which can dry out and crack sooner where a building faces the weather. Under the Repairing Standard, private landlords in Scotland have to keep homes wind and watertight, and failed outside joints work against that.
Homes close to Dunstaffnage Chapel include some older properties, and older walls, gutters and the joints where extensions meet them need a flexible sealant.
Dunbeg is in Argyll and Bute. Whether you are in the middle of Dunbeg or further out, we cover external mastic for every kind of property, from flats and houses to offices and hotels. Across Argyll and Bute, we cover 118 places, and Dunbeg is one of them. We also work in Glasgow, around 61 miles away.
Jobs for external mastic in PA37 works the same way as everywhere else we cover. External mastic is available to properties on Young Crescent, Castle Road and Stewart Way. We also cover the places around Dunbeg: Ganavan (1 mile south-west), North Connel (2 miles north-east), Dunollie (2 miles south-west), Connel (2 miles east) and Oban (3 miles south). Remote and island addresses need a little more planning, so tell us where you are when you ask for a quote.
Near you in Dunbeg
For rail, the closest station is Connel Ferry station, about 2.5 miles east of the centre. Nearby you will also find Oban Museum (2.2 miles south-west) and Lorn and Islands Hospital (3.4 miles south). Green spaces nearby include Lochan Dubh.
Do you need external mastic in Dunbeg?
Sometimes a movement joint was filled with mortar or a rigid filler, often by someone who didn’t know what it was for. The joint can’t move, so the wall cracks somewhere else instead.
People generally contact us after spotting one of these:
- Joints where the bead has come unstuck
- Panel joints letting water in
- Weeds or debris growing in open joints
- Brick movement joints where the sealant has split
For landlords with property near Connel Ferry station, failed wall and movement joints let damp in, so they’re worth checking between tenancies.
Before you book anyone
- Whether they’re fully insured
- Whether they seal over old material or remove it
- Who does the work, and how experienced they are
- Whether VAT is included
What happens if it’s left?
Resealing a run of joints in one go is generally better than patching one at a time. They’ve weathered the same way, and access only has to be arranged once. Around Dunbeg, water from a failed joint in an older stone home can soak into timber and plaster.
Every job is a little different, so we quote each one individually. Size, access and the product the joint needs all make a difference, and we’ll explain the quote if you ask.
Why us?
- Neat joints and a tidy finish
- White, clear, grey or another colour, product permitting
- Every job guaranteed for a year
- Sealant colour chosen to suit
Read what affects the cost and what customers say.
Also near Dunbeg
Other services in Dunbeg
Honest limits
Honest advice matters more to us than a booking, so here’s what new sealant won’t do:
- Damp that isn’t coming from the joint
- Cracking across the wall rather than at a joint
- Structural movement, which needs a surveyor or engineer
Not sure which it is? You can drop us a line at info@mrmastic.co.uk and we will tell you honestly.
Surfaces we seal
- Render & cladding joints
- Façade panels
- Brickwork movement joints
- Concrete & block
- Copings & trims
- Joints between brick and frames
How we quote for external mastic
There’s no set price list, because jobs vary so much. The quote depends on:
- Working hours on commercial sites
- The number and length of the joints
- Whether the work is at height
- Whether there’s mould to deal with
A failed joint rarely gets cheaper to fix by waiting. If you’re not sure whether it needs doing, email us at info@mrmastic.co.uk and we will give you an honest view and a quote.
What to tell us for a quote
What to tell us when you ask for a quote:
- A few pictures by email, if you can
- What’s wrong with the joints now
- Where the job is, and your postcode
- How many joints, rooms or windows are involved
Want a quote for external mastic? Please send an email to info@mrmastic.co.uk with a few details. You’ll know what we plan to do, and what it will cost, before any work begins.
Dunbeg: your questions answered
Do you work for landlords with property near Connel Ferry station?
Yes, we work for landlords and letting agents. You can send an email to info@mrmastic.co.uk with the address and a few details, and we will give you a fixed price before work begins.
Does the coastal weather in Dunbeg affect outside sealant?
Coastal homes put outside sealant through more weather than inland ones, so preparation and the right sealant matter all the more. It’s worth checking the walls that face the sea first.
Is it OK to fill a movement joint with cement?
No, not where the gap is a movement joint. Pointing it stops it working and can lead to cracking. We’ll reseal it with a flexible sealant.
What is backing rod for?
That’s backing rod, a closed-cell foam. It keeps the sealant at the right depth and bonded to the sides only, which would stop it stretching.
How do you reach high-level joints?
That depends on how high the joints are and the ground below. Low-level joints are straightforward; for higher work, tell us about the building and we’ll confirm what’s needed.
Are you ARBOMaster approved?
Yes. We hold ARBOMaster approved applicator status, and we’re fully insured.
Can you work on commercial sites?
Yes. We can plan bigger jobs in stages to suit the site.
Can you do several jobs on one visit?
Yes. More than one area can go on one quote.
The process
A visit follows a simple pattern: we check the joints, mask and protect the surrounding surfaces, carry out the job and clear up. It usually takes anything from a few hours to several days, depending on the building. Around Dunbeg, distance and access matter more than parking. Let us know how to find you and how to reach the joints.
- 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.
- 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.
How to prepare
- Where the joints are inside, avoid wetting them before we arrive
- Keep pets and children clear of the area while we work
- Mention any tricky access
How to 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.
Advice
Landlord and commercial work in Dunbeg
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.
If you manage several properties in or around Dunbeg, jobs at different addresses can be quoted together. Send us the addresses and the work at each.