Highland · Scotland
Dunnet Remedial Sealant
Problem with your failed sealant joints in Dunnet? We remove the old material, prepare the joints and seal them properly, and the work is guaranteed for a year.
- Movement joints that have split or pulled away
- Repeat leaks from the same joint
- Worktop sealant that has shrunk and split
How we handle remedial sealant in Dunnet
The wrong product in the wrong joint fails however neatly it’s applied. We take it out and use a sealant made for that joint. We work on shrunken worktop sealant, leaking tray & enclosure joints and expansion joints, and the jobs we see most are torn expansion joints and sealant applied over old sealant that has lifted.
A bathroom in a place like Dunnet gets the same daily wear as one in a city flat. Limescale is less of a problem with Scotland’s generally soft water, but mould still takes hold in damp sealant and grout.
We guarantee the work for a year. If something is not right with it in that time, tell us and we will put it right.
- Where
- Dunnet (KW14)
- Wider area
- Highland
- Cover
- A year, on every job
- Price
- A clear price before we start
- info@mrmastic.co.uk
- Page updated
- 26 October 2026
What we cannot put right
New sealant cannot fix everything, and we will tell you before any work starts. It won’t solve:
- Sealant in an older building that needs testing for asbestos first
- A bath, tray or worktop that moves until it’s properly fixed
- A tray or bath that is cracked
If you are not sure, just email us at info@mrmastic.co.uk and we will give you a straight answer before booking.
Surfaces we seal
- Failed movement joints
- Leaking tray & enclosure joints
- Mouldy bath & shower sealant
- Shrunken worktop sealant
- Expansion joints
- Botched or over-sealed joints
Questions from Dunnet
Do you cover smaller places like Dunnet?
Yes, smaller places are covered as well as towns. Our work covers the whole of Scotland. Let us know about access, parking and anything unusual about getting there when you book.
Is Dunnet in your area for remedial sealant?
Yes, Dunnet 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, and we will give you a clear quote.
How long should I leave it?
Different products cure at different speeds, so follow the cure time we give you.
Can you strip sealant from an acrylic tray safely?
Yes. We cut and lift the old sealant with tools suited to the surface, and the residue is cleaned away. We point out any damage that’s already there.
Is it worth trying it myself?
You can, for simple jobs. Preparation is everything: all the old sealant out, and a clean, dry joint. We can always put it right if it fails.
What do you put in the joint?
Quality sealants from brands including Arbo and Everbuild, picked for each joint. We explain the product when we quote.
I rent my home. Can I book you?
Yes, but check with your landlord or agent first. Landlords are often happy for the work to be arranged.
Does someone need to be in?
Access is agreed with you when the job is booked. Indoors, that generally means someone at home.
Common problems we fix in Dunnet
Even good sealant ages. Mould grows into the silicone, the surface hardens and the bead shrinks. At that point it has to come out.
Look out for these signs:
- Sealant applied over old sealant that has lifted
- Gaps opening along the back of the worktop
- Sealant that came away because the surface wasn’t prepared
- Floor or wall movement joints that have failed
In the older streets around Dunnet Church, timber floors under older bathrooms flex, so joints need a sealant that moves with them.
Questions to ask before booking
- How long to leave it before use
- Is the old sealant removed completely?
- The length of the guarantee
- Who turns up on the day
Landlords, agents and businesses in Dunnet
We also work for property managers and facilities teams in Dunnet and across Highland. Several sites can be quoted together, and we’re fully insured.
From a single let to a portfolio, the work is the same standard: old sealant fully removed, joints prepared properly and a 12-month guarantee.
Why deal with it now?
Adding more sealant is the usual quick fix, and it rarely works. It does not grip the old layer, so the leak carries on and there’s now more to remove. Around Dunnet, 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.
Every job is a little different, so each one gets its own quote. Size, access and the product the joint needs all play a part, and we’ll explain the quote if you ask.
Why book with us
- A sealant colour to suit the surroundings
- Sanitary silicone with an anti-fungal additive in wet areas
- White, clear, grey or another colour, product permitting
- Approved under the ARBOMaster scheme
DIY versus a professional finish
The biggest DIY mistake is sealing over old sealant. Silicone doesn’t stick to old silicone, so it peels away and traps moisture behind it. All the old material has to come out first.
If you are set on DIY, put the effort into preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it fails, we can still redo it.
Dunnet homes and their sealant
Dunnet is within about 1 mile of the coast. Coastal homes, holiday lets and guest houses can see heavy bathroom use in busy months, and sealant and grout that work that hard wear out sooner. Scotland’s water is generally soft, so sealant and grout see less limescale than in much of England. But mould still grows into sealant and grout in a room that doesn’t dry out.
In and around Dunnet, as anywhere, good remedial sealant starts with a clean, dry, properly prepared joint.
Dunnet is about 7 miles east of Thurso, in Highland. Wherever you are in the KW14 postcode area, we cover remedial sealant for homes and businesses. Across Highland, we cover 253 places, Dunnet among them.
All of KW14 is within our area for remedial sealant, from the main roads to the quietest streets. Neighbouring places we cover for remedial sealant include Brough (2 miles north), Castletown (3 miles south-west), Scarfskerry (3 miles north-east), Rattar (3 miles north-east) and Murkle (4 miles south-west). Island and remote addresses take a little more planning, so tell us where you are when you ask for a quote.
Near you in Dunnet
Nearby you’ll also find Westside Croft (0.5 miles north-west) and Castle of Mey (4.5 miles east). Not far away are St John's Loch.
What happens on the day
A visit follows a simple pattern: we check the joints, protect the area around them, do the work and clear up. Most jobs take a few hours, depending on how many layers have to come out. Outside jobs in Dunnet need a dry day, because sealant won’t bond to a wet joint, so external jobs may need to move if the day turns wet. Work indoors isn’t affected.
- First we work out whether the problem is the sealant, movement or a leak.
- Old beads and residue are removed down to clean surfaces.
- We treat any mould and dry the joint thoroughly.
- We reseal with a product suited to the joint, backed where needed.
- We finish neatly and point out anything that needs another trade.
Preparing for the visit
- Mention any parking rules near the property
- Where the joints are inside, avoid wetting them before we arrive
- Mention if the joints have been sealed before
Get a quote
For remedial sealant in Dunnet, email us at info@mrmastic.co.uk. Tell us what the problem is and where, and we will agree the price before any work begins.
Related advice
Looking after it afterwards
So the new joints stay in good condition:
- Do not point over movement joints
- Do not wait for a small gap to become a leak
- Air the bathroom so the sealant can dry
- Check ceilings under showers for marks
Keep the room ventilated: use the extractor or open a window after showering.
Leaks through failed sealant grow over time. Every shower or downpour sends more water through, into whatever is behind or below. Sorting it early limits the damage.