Dunoon expansion joint sealing
Expansion joint sealing in Dunoon, backed by over 20 years in commercial sealing. Fully insured, with a 12-month guarantee.
- Leaks through car park deck joints onto the level below
- Damp inside where a wall movement joint has failed
- Debris jammed in movement joints
Expansion joint sealing near Dunoon
Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.
Traffic, movement and joints around Dunoon
The sea is no more than about 1 mile from Dunoon. Open joints in coastal car parks and yards let in salt-laden water as well as grit, and edges left open tend to break up faster. Being in the west of Scotland, Dunoon gets more rain than eastern areas. External slab joints left open take plenty of rain. Dry spells are used for the external joints.
Sites like Cowal Community Hospital, under half a mile to the north of Dunoon, carry ambulances, deliveries and visitors’ cars over their road and deck joints.
Dunoon (Gaelic: Dùn Obhainn) is about 6 miles west of Greenock, in Argyll and Bute. We send applicators to Dunoon for movement joints, handled exactly as we handle every other area. Across Argyll and Bute, 124 places are covered, Dunoon among them. Our Glasgow page has more on work in that area (26 miles or so).
We take on movement joints across the PA23 postcode area. If your site is on Queen Street, Queens Court and Pilot Street or close by, we can quote for movement joints. Being close to the A815 and A885, Dunoon is easy to get to with materials and equipment. Just outside Dunoon, we also work in Kirn (1 mile north-east), Hunters Quay (1 mile north-east), Bullwood (2 miles south), Sandbank (2 miles north) and Strone (2 miles north). Bigger towns within reach include Helensburgh (9 miles north-east), Rothesay (10 miles south-west), Cardross (11 miles east), Rhu (7 miles north-east), Garelochhead (10 miles north-east) and Port Bannatyne (9 miles south-west). Dunoon is one of the busier places in Argyll and Bute, and its commercial and public buildings are all within our area. Where a site is remote or on an island, travel and materials need planning ahead, so include the location in your enquiry.
Landmarks near Dunoon
We work on buildings around Dunoon Grammar School and the streets around them. For rail, the closest station is Inverkip station, about 3.9 miles south-east of the centre. Nearby you will also find Dunoon Castle (0.6 miles south) and Castle House Museum (0.6 miles south). Not far away are Loch Loskin.
Expansion joint sealing in Dunoon
If you need expansion joint sealing in Dunoon, start with photographs and joint lengths. We’ll come and look where photographs don’t show enough before issuing a fixed quote. To discuss the joints first, call 01277 525 020 or email us. We work on brickwork movement joints, podiums and floor movement joints and car park decks and ramps, and what we are called in for most is debris jammed in movement joints and previous reseals laid over old sealant. Whether you call it commercial sealant work, mastic application or joint sealing, the work in Dunoon is the same: the right product in a properly prepared joint.
Around smaller Scottish places like Dunoon, slabs needing attention are often in agricultural buildings, workshops, schools and hotels. Concrete slabs and yards there take vehicles and weather.
Every job ends the same way: guaranteed. Our workmanship is backed for 12 months, and we explain exactly what that covers when we quote.
- Place
- Dunoon (PA23)
- Region
- Argyll and Bute
- Cover
- A 12-month guarantee
- Price
- A fixed quote before we start
- Call
- 01277 525 020
- Last updated
- 3 November 2026
FAQs: Dunoon
Can you work on a hospital site such as Cowal Community Hospital?
Yes, healthcare and care buildings are part of our work. Before anything starts, the estates team agrees permits, inductions and infection-control measures with us.
Is a smaller place like Dunoon outside your area?
No. Places such as Dunoon are covered as much as the big towns. Every Scottish council area is within our area. Where we can, we group nearby jobs to make the most of each trip.
Do you reseal car park expansion joints?
Yes, we do. These joints take wheels, salt and water, so product choice matters.
What if there’s asbestos in the old mastic?
Asbestos is possible in some older mastics, particularly in buildings from before 2000. We check the asbestos register before cutting out old sealant in an older building, and if asbestos is suspected, work stops until it’s tested. Removing asbestos is a job for asbestos specialists, not us.
What happens if it rains on the day?
The joint has to be dry, and the air and surface temperature inside the product’s limits. Cold, damp or frosty mornings can stop work outside, so we plan with the forecast in mind.
What timescale should we allow for resealing expansion joints?
It typically takes a short visit for a handful of joints, or several days or more for a car park deck or long runs of facade joints, with phasing where areas must stay open. Cure time before reopening is confirmed on the day.
Do you offer coloured sealant?
It depends on the product. Some ranges are wide, others limited, so we will confirm the colours available for the specified product with the quote.
Also in Dunoon
Honest limits
Honesty saves time and money. New sealant won’t cure:
- Proprietary pre-formed expansion joint systems
- Leaks coming from the membrane rather than the joint seal
- Cracking or settlement that calls for an engineer’s assessment
If in doubt, ring 01277 525 020 or send photos by email and we will say what we think.
Where we work in Dunoon
- Blockwork control joints
- Brickwork movement joints
- Car park decks and ramps
- Podiums and floor movement joints
- Precast concrete panel joints
- Cladding panel joints
Should maintenance staff do it?
A short, simple internal joint is often within reach of a maintenance team. The usual problems come from preparation: sealing over old material, sealing onto damp or dusty surfaces, or a product that can’t take the movement.
Putting right a botched joint often costs more than sealing it well at the start, since all of it has to come out and the faces be cleaned back again. That’s why many clients bring in a specialist from the beginning.
Why deal with it now?
Resealing is typically the answer, not replacing the element. If the material either side is sound, a properly prepared reseal restores the joint. We’ll flag where edges need repair before sealing. Buildings that aren’t in daily use, such as halls and seasonal premises, may let water in unnoticed, so a failed joint has time to cause damage. Resealing early avoids that.
Larger quantities, tricky access or phasing all shape the price. Site requirements like inductions and permits play a part as well, along with the time of year for external work.
Why choose Mastic Doctor in Dunoon
- Old sealant cut out, never sealed over
- Colour agreed before work starts
- Constructionline member
- CSCS-carded applicators
Read how commercial sealant jobs are priced and how we’re accredited.
On site: what to expect
When we get to site, we sign in, go through any site induction and check how permits are handled. Floors, finishes and fittings next to the joints are covered before anything is cut or cleaned, with the work itself typically taking a day or so for a modest run of joints, and longer where decks, ramps or floors are done in phases. Where we can, we combine work around Dunoon with other jobs nearby, to make the most of each trip. Let us know if your dates have any give.
- We look at the joints, their width and how they’ve failed.
- You get a fixed quote with the product and its movement capability stated.
- The failed seal is removed and both faces are cleaned until sound and dry, flagging any broken edges that need repair before sealing.
- Backing rod goes in at the right depth, or bond-breaker tape where the joint is shallow.
- After any primer the maker requires, the bead is applied and tooled so it grips two sides only.
- Each joint is inspected and handed over with our 12-month guarantee.
Before we start on site
- Agree which areas must stay open
- Tell staff and tenants when we will be in
- Point out parking and an unloading spot
Request a quote
To get a fixed quote, call the office on 01277 525 020 or send details through our quote form. You can also send details through our quote form.
Advice
What we’re called out for in Dunoon
With no backing rod or bond-breaker in place, sealant grips the base of the joint too. Sealant fixed to the base and sides can’t flex, so it tears so backing is set before sealing.
If one of these sounds familiar, it’s time for a closer look:
- Rain penetration at brick or block movement joints
- Chipped joint edges on forklift routes
- Water dripping through deck or ramp joints
- Sealant peeling off one face of the joint
Schools such as Dunoon Primary School And Janitor's House have movement joints in their walls and floors that are easy to overlook.
Before you book anyone
- Will RAMS and insurance details be available?
- Do they follow the manufacturer’s priming guidance?
- Can the work be phased to keep areas open?
- How the existing material will be dealt with
Different surfaces, different methods
Joints between different materials
Hybrid or MS polymer sealants bond to many substrates. We pick the product for the materials and the movement, and confirm it in the quote.
Concrete and precast panel joints
Concrete edges can be weak or carry release agents that stop adhesion. We prepare the faces thoroughly and prime where the maker calls for it and check the edges for soundness as we go.