Aberdeen · Scotland
Remedial sealant & repairs in Portlethen, Aberdeen
Problem with your failed sealant joints in Portlethen? We remove the old material, prepare the joints and seal them properly.
- Black mould underneath the bead
- Torn expansion joints
- Products that weren’t meant for the joint
Remedial sealant for homes and businesses in Portlethen
Not every leak is a sealant leak. A cracked tray, a failed shower valve or a leaking waste can look just the same. When the fault is elsewhere, we say so instead of resealing for the sake of it. We work on shrunken worktop sealant, leaking tray & enclosure joints and mouldy bath & shower sealant, and common reasons people get in touch are smears and lumps from a botched reseal and leaks that keep coming back after resealing.
Being further from a city doesn’t change the work: everything old is cut out, the joints are cleaned and dried, and new sealant or grout goes in. The journey and access are simply planned in advance.
There’s a 12-month guarantee on every job.
- Location
- Portlethen (AB12)
- Wider area
- Aberdeen
- Guarantee
- A year, on every job
- Quotes
- Quoted before any work starts
- info@mrmastic.co.uk
- Page updated
- 26 October 2026
DIY versus a professional finish
If you do try it yourself, take your time over the preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it fails, we can still redo it.
Not every job suits DIY: high-level joints, fire-rated gaps, external movement joints and big jobs call for the right materials, safe access and experience.
Nearby places to Portlethen
What else we do in Portlethen
What sealant work can’t fix
Some problems need a builder, plumber or other trade rather than us:
- A cracked shower tray or bath (that needs repair or replacing)
- Movement from fittings that are not supported
- Sealant in an older building that needs testing for asbestos first
Not sure which it is? You can email us at info@mrmastic.co.uk and we will tell you honestly.
Where we work in Portlethen
- Botched or over-sealed joints
- Leaking tray & enclosure joints
- Mouldy bath & shower sealant
- Failed movement joints
- Expansion joints
- Shrunken worktop sealant
What affects the quote in Portlethen
Some jobs are bigger than they look, and some smaller. What affects the quote:
- Any mould that needs treating
- Working hours on commercial sites
- The amount of work
- How many rooms, windows or areas are involved
A few things move the cost up or down: how much old sealant there is and how stubborn it is, any mould to treat, and whether we need extra access for height. We take all of that into account in your quote.
What we need to know
Photos by email are helpful but not essential. Try to tell us:
- Whether it’s a home or a business
- Whether it has been sealed before
- The problem you’ve noticed
- Where the job is, and your postcode
Need a quote? 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.
How to look after the new joints
Looking after new joints is easy, and it makes a real difference:
- Keep an eye on the ceiling below the bathroom
- Never seal over old silicone
- Act on a lifting corner straight away
- Use a soft cloth, not a scourer, on silicone
Don’t let anyone seal over it later. New silicone doesn’t bond to old, so the old bead should always come out first.
Mould under a second layer of sealant keeps growing out of sight. When it finally shows, the whole bead needs to come out.
The process
Most of a good job is in the preparation, so that’s where we spend the time. Joints are cleaned back and dried before anything new goes in. In total, it usually takes a few hours for a typical bath or shower, longer where several layers have been applied. Outside jobs in Portlethen need a dry day, because sealant will not 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.
- The joint is tooled and you are told about anything else we found.
Getting ready for the visit
- Mention any sign-in or site rules at work premises
- For indoor joints, keep the area dry beforehand if you can
- Mention any parking rules near the property
How to get a quote
Quotes start with a quick conversation. Tell us what’s wrong, where it is and how much there is. When it suits you, drop us a line at info@mrmastic.co.uk.
Related advice
Questions from Portlethen
Do you work for landlords with property near Portlethen station?
Yes, landlords and agents are among the people we work for, and several properties can be quoted together. You can drop us a line at info@mrmastic.co.uk with the details for a clear quote.
Do you cover smaller places like Portlethen?
Yes, we do. We work across all of Scotland, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.
Can you reseal a split movement joint?
Yes. If a joint has been filled with mortar or rigid filler, we rake it out where possible, then the joint is sealed properly.
Is remedial work guaranteed?
Yes, for 12 months. Where we have flagged another fault, it needs fixing for the joint to last.
Someone resealed my shower and it’s leaking again. Can you help?
Yes. All the sealant comes out, we find out why it failed, and the joint is resealed properly.
Can I choose the sealant colour?
Usually, yes. White, clear and grey are common, and other colours are available for many products, and we agree the colour with you before we start.
Where is Mr Mastic based?
We are based in Crawley, and we work across South East England, London and Scotland.
Do you remove the old sealant?
Yes. Sealing over the old bead is the commonest cause of early failure, so we never do it.
Surface by surface
Over-sealed & botched joints
Botched joints sometimes have damaged edges from earlier scraping. We work carefully to avoid adding to it, and point out any existing damage.
Worktops & kitchens
If a worktop moves when you lean on it, the sealant will keep splitting. That needs refixing before resealing, and we’ll tell you if we find it.
What remedial sealant looks like in Portlethen
Portlethen is within about 1 mile of the coast. Near the coast, holiday lets and guest houses can see bathrooms used by one guest after another, and sealant and grout that work that hard wear out sooner. Aberdeen is known for its granite tenements, and in a tenement, a failed seal can reach the flat below.
If you let a flat or house near Portlethen station, failed or mouldy sealant is worth putting right between tenancies, before it turns into a leak. Homes close to Portlethen Parish Church include some older properties, and walls and floors in older homes can move, and sealant and grout show it first. If you look after a building such as Portlethen Primary School, washroom and kitchen sealant there needs the same care as at home, and schools and businesses are part of our work as well as homes.
Portlethen is about 6 miles south of Aberdeen, in Aberdeen. Whether you are in the middle of Portlethen or further out, remedial sealant is available for homes and businesses alike. Across Aberdeen, we cover 63 places, Portlethen among them. For nearby work, see our Aberdeen page.
Work in AB12 works the same way as everywhere else we cover. We cover properties on Mosside Drive, Muirend Road and Dunvegan Place. Main roads around Portlethen include the A92, so getting to you is simple. If you are just outside Portlethen, we cover Badentoy Park (1 mile north-west), Portlethen Village (1 mile south-east), Findon (1 mile east), Cammachmore (2 miles south-west) and Marywell (2 miles north-east). Larger places within reach include Aberdeen (6 miles north), Rosemount (6 miles north), Berryden (7 miles north), Ferryhill (5 miles north), New Aberdeen (6 miles north) and Dyce (10 miles north). As one of the bigger places in Aberdeen, Portlethen has every kind of property, from flats to offices.
Around Portlethen
Locally, jobs take us to homes and businesses close to Portlethen Academy and the streets around them. Portlethen has its own railway station: Portlethen station. A little further out are Blairs College (3.3 miles north-west) and Pitfoddels Castle (3.8 miles north). Not far away are Portlethen Moss and Loirston Loch.
For landlords and businesses
Letting agents often deal with us directly. Send the address, what’s needed and the access arrangements.
Mouldy or split sealant often shows up at the end of a tenancy. Several properties can go on one quote.