Argyll and Bute · Scotland
External Mastic in Bowmore
Sealing brickwork movement joints, render, cladding and façade joints for homes and businesses in Bowmore and across Argyll and Bute. Fully insured, ARBOMaster approved and guaranteed for a year.
- Brick movement joints where the sealant has split
- Panel joints letting water in
- Old sealant gone brittle and cracked
How the visit works
Good joint work is mostly preparation, and we do not rush it. Every joint is cleaned and dried before new material goes in. All told, the work takes a few hours to a few days, depending on the length of joint and the access. Somewhere like Bowmore may be a longer drive, and the journey is planned ahead. Mention tracks, gates, ferries or anything else about the route.
- Each joint is checked and the colour of the new sealant agreed.
- We take out the old sealant until the faces are sound.
- Closed-cell backing rod is pushed in so the sealant bonds to two sides only.
- We prime the faces where required.
- We gun in low-modulus sealant and tool it neatly.
How to prepare
- For business premises, tell us about site rules or sign-in
- Plan for the work area to be out of bounds to pets and children
- Let us know about parking restrictions
Ask for a quote
Call for a quick quote, or email us if that is easier. Tell us about the joints that need doing and we’ll explain what’s involved and send you a clear quote.
Read more
External mastic in Bowmore
Movement joints let brickwork, render and cladding expand and shrink without cracking. Its sealant has to flex with the building, season after season, and when it fails, the wall takes the strain and water finds a way in. If you’re dealing with leaking joints around cladding and façade panels and weathered mastic that no longer stretches, we can put it right, whatever the surface.
In and around a place like Bowmore, many buildings face open ground and take the full weather. Outside joints on exposed walls work hard.
We stand behind the work with a one-year guarantee, so you’re covered after we’ve gone.
- Place
- Bowmore (PA43)
- Region
- Argyll and Bute
- Cover
- A year, on every job
- Quotes
- A clear quote up front
- info@mrmastic.co.uk
- Page updated
- 26 October 2026
Aftercare tips
To keep the joints looking good and working properly:
- Make sure movement joints are not pointed over
- Clear growth from the base of walls and joints
- Walk round the building once a year and look at the joints
- Get split or bare joints resealed while the damage is small
Don’t let soil, plants or ivy build up against the new joints. Anything that holds water against the joint wears it out sooner.
An open movement joint lets rain into the wall every time it pours. Over time it can mean damp inside, stained render or frost-damaged brick which cost more to put right than the joint.
External mastic in Bowmore: local notes
Bowmore 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 where harling meets frames, pipes and other materials, the joint needs a flexible sealant that grips a rough surface.
In and around Bowmore, as anywhere, good external mastic starts with a clean, dry, properly prepared joint. For jobs in and around Bowmore, choosing the right material for each joint is as important as a tidy finish.
Bowmore (Gaelic: Bogh Mòr) is in Argyll and Bute. Bowmore gets the same service as everywhere we cover: the old material taken out, joints prepared properly and a 12-month guarantee. Bowmore is one of 118 towns and villages in Argyll and Bute where we work. Our Glasgow page covers work nearby (78 miles or so).
Every address in PA43 is covered for external mastic, from the main roads to the quietest streets. If you need external mastic at a property on High Street, Main Street and The Square or anywhere close by, our applicators can take on the job. Neighbouring places we cover for external mastic include Port Charlotte (4 miles west), Keills (8 miles north-east), Imeraval (9 miles south), Port Askaig (9 miles north-east) and Port Ellen (10 miles south-east). Island and remote addresses take a little more planning, so please mention your location when you drop us a line at info@mrmastic.co.uk.
Near you in Bowmore
Other landmarks nearby include Islay Hospital (within half a mile east) and Museum of Islay Life (3.8 miles west). For a walk, there’s Loch Skerrols.
Also near Bowmore
More services for Bowmore
FAQs for Bowmore
Do you cover Bowmore for external mastic?
Yes, Bowmore is within the area we cover. Our work covers the whole of Scotland. Just drop us a line at info@mrmastic.co.uk with a few details of the job.
Is Bowmore within the area you cover?
Yes, smaller places are covered as well as towns. Our work covers the whole of Scotland. Just mention lanes, gates or anything else about the route when you book.
Do you seal joints where cladding meets other materials?
Yes. Different materials move at different rates, so a flexible sealant is needed where they meet. We choose one that suits both surfaces.
How long before the joint can be used?
Cure times vary by product. Before we leave, we will tell you the cure time.
Will you leave a mess?
Not at all. We work neatly, protect the area around the joints and tidy up afterwards.
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.
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.
Why do you put foam in the joint first?
The foam is closed-cell backing rod. It stops the sealant going in too deep and bonding to three sides so it can flex with the joint.
What affects the quote in Bowmore
Jobs vary more than people expect. What affects the quote:
- Whether old sealant or filler has to be cut out
- The number of rooms or windows
- Which sealant suits the joint
- The number and length of the joints
A few things move the cost up or down: the old material and how easily it comes out, whether mould needs treating, and whether the work is at height. We take all of that into account in your quote.
What we need to know
What to tell us when you ask for a quote:
- Whether it has been sealed before
- Access, such as stairs, a lift or height
- If it’s domestic, commercial or a hotel
- The address or postcode of the job
Quotes start with a quick conversation. Tell us what’s wrong, where it is and how much there is, and we will explain how we’d tackle it. When it suits you, send an email to info@mrmastic.co.uk.
Why act early in Bowmore
A low-modulus sealant is chosen because it moves without pulling hard at the edges. That protects surfaces like brick, render and concrete. A stiffer product can damage the joint edge as it fails. Around Bowmore, water from a failed joint in an older stone home can soak into timber and plaster, which is a far bigger job than the sealant.
Doing several joints on one visit is normally more efficient than separate visits. We will give you a clear quote for the lot.
Why choose Mr Mastic in Bowmore
- Domestic, commercial and hotel work
- A choice of colours where the product allows
- Approved under the ARBOMaster scheme
- Anti-fungal silicone where joints get wet
Take a look at what affects the cost and what customers say.
How the job changes by surface
Cladding and façade panels
Panel systems often rely on sealant between and around the panels. Each joint gets a sealant that suits the panel and its movement.
Render joints
Rendered walls have joints at beads, openings and changes of material. We reseal them with a flexible exterior sealant that suits the render colour.
DIY sealant or a professional job?
If you’ve already had a go yourself, that’s fine. We cut it out and start again, so tell us about it when you ask for a quote.
A careful DIYer can reseal a simple joint, like a short, easy-to-reach joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
Work for landlords, hotels and businesses
Letting agents often deal with us directly. Tell us the address, the job and how access works.
We also work for property managers and facilities teams. Several sites can go on one quote, and we’re fully insured.