Orkney Islands · Scotland
Remedial sealant & repairs in St Mary's, Orkney Islands
Failed sealant joints in St Mary's need attention? We cut out the old, prepare the joints and apply the right sealant, and the work is guaranteed for a year.
- Smears and lumps from a botched reseal
- Mould trapped under a layer of silicone
- Sealant applied over old sealant that has lifted
Remedial sealant in St Mary's, done properly
Water on the floor does not always mean failed silicone. 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, failed movement joints and botched or over-sealed joints, and the jobs we see most are movement joints that have split or pulled away and sealant peeling off a dusty or damp surface.
For a place like St Mary's, the job is the same as anywhere: 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.
Our work is backed for twelve months, and the guarantee is the same wherever you are.

- Where
- St Mary's (KW17)
- Wider area
- Orkney Islands
- Guarantee
- 12 months on all our work
- Quote
- A clear price before any work starts
- info@mrmastic.co.uk
- Last updated
- 26 October 2026
Aftercare tips
Simple care keeps the joints in good condition. We recommend:
- Act on a lifting corner straight away
- Keep an eye on the ceiling below the bathroom
- Report a tray that rocks or a worktop that lifts
- Use a soft cloth, not a scourer, on silicone
Clean gently: a mild cleaner and a soft cloth, with no blades or scourers.
A split movement joint lets rain into walls and floors, and the longer it’s left, the more the joint edges break down. Resealing while the edges are sound is simpler.
What happens on the day
A visit follows a simple pattern: we check the joints, mask and protect the surrounding surfaces, do the work and tidy away. Most jobs take a few hours for most joints, depending on how much old sealant has to come out. Outside jobs in St Mary's 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.
- The failure is looked at first, so we know whether it’s sealant, movement or water from elsewhere.
- Each layer is cut out and the residue cleaned off.
- We treat any mould and dry the joint thoroughly.
- The right product goes in, with backing where the joint moves.
- The joint is tooled and you’re told about anything else we found.
Before we arrive
- Where the joints are inside, avoid wetting them before we arrive
- Plan for the work area to be out of bounds to pets and children
- Clear the area around the work
Ask for a quote
We don’t publish a price list, because every job is different. Instead, we give you a clear price for your job. To arrange one, email us at info@mrmastic.co.uk.
Related advice
St Mary's homes and their sealant
St Mary's is close to 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. Scottish Water supplies are generally soft, so limescale is less of a problem than in hard-water areas. Mould is another matter: a bathroom that stays damp still turns sealant and grout black.
Whether the job is in St Mary's itself or nearby, the right material for each joint matters as much as a neat finish. In and around St Mary's, as anywhere, good remedial sealant starts with a clean, dry, properly prepared joint.
St Mary's is about 6 miles south of Kirkwall, in the Orkney Islands. Every kind of property in St Mary's can book us for remedial sealant. Every job comes with our 12-month guarantee. St Mary's is one of 51 towns and villages in the Orkney Islands where we work for remedial sealant.
Jobs for remedial sealant in KW17 is quoted and booked the same way as anywhere else. We cover properties on Station Square, St Mary's Road and Storehouse Place and the roads around them. Neighbouring places we cover for remedial sealant include Upper Sanday (3 miles east), Burray Village (4 miles south), Toab (4 miles north-east), Grimness (5 miles south) and St Margaret's Hope (5 miles south). St Mary's is among the bigger towns we cover in the Orkney Islands. For island and remote addresses, the job takes a little more planning.
Landmarks near St Mary's
A little further out are Balfour Hospital (5.8 miles north) and Graemeshall Museum (0.5 miles north-east). For a walk, there’s Gaitnip Hill and Loch of Ayre.
How we quote for remedial sealant
Call for a quick quote. The main things that affect it are:
- How much there is to do
- Working hours on commercial sites
- The product the joint needs
- The old material and how stubborn it is
Rather than a set price list, we look at what your job involves: how many joints, what’s in them now and how we reach them. You’ll know the price before we begin.
Asking for a quote
When you contact us, it’s useful to know:
- How we’d reach the joints
- Pictures of the joints, sent by email
- If someone has resealed it before
- Whether it’s a home or a business
To get a quote, send an email to info@mrmastic.co.uk with the location and a short description of the problem. We’ll give you a clear price before any work starts.
Why deal with it now?
Leaks that are left keep doing damage out of sight: soaked floorboards, ceiling stains below and blown plaster. Dealing with the joint now is a small job by comparison. When the nearest tradesperson is a drive away, it’s tempting to leave a small leak, but water behind a failed seal does the most damage when nobody’s watching.
What it costs depends on how much there is to do, how hard the old material is to remove and access to the work. We give a clear quote before any work starts, so you know where you stand.
Why book with us
- One-year guarantee on every job
- Trusted Arbo and Everbuild sealants
- Sanitary silicone with an anti-fungal additive in wet areas
- Colour picked to suit the job
Take a look at how sealant jobs are priced or what customers say.
Nearby places to St Mary's
Also in St Mary's
Surface by surface
Leaking trays & enclosures
A cracked tray, failed valve or leaking waste needs a different fix. We say so rather than reseal.
Movement & expansion joints
Movement joints in floors, walls and façades need a flexible sealant set to the right depth. Failed sealant is cut out, backing rod or tape is fitted and the joint resealed.
What sealant work can’t fix
In fairness, there are a few things sealant will not fix:
- Cracks in the fitting rather than the joint
- Movement from fittings that aren’t supported
- Old mastic in a building from before 2000 that should be checked for asbestos before it’s disturbed
If in doubt, drop us a line at info@mrmastic.co.uk and we’ll say what we think.
Surfaces we seal
- Failed movement joints
- Expansion joints
- Mouldy bath & shower sealant
- Leaking tray & enclosure joints
- Shrunken worktop sealant
- Botched or over-sealed joints
For landlords and businesses
Water getting past a failed joint can damage the building, which is a bigger problem in a rented property. Resealing at the right time is simple maintenance that we can handle for you.
We also work for property managers and facilities teams. We can quote a run of properties together.
Questions from St Mary's
Can you do remedial sealant in St Mary's?
Yes, St Mary's is within the area we cover. Our work covers the whole of Scotland. Just email us at info@mrmastic.co.uk with a few details of the job, and we’ll give you a clear price.
What guarantee comes with remedial sealant in St Mary's?
All our work, in St Mary's and everywhere else, comes with a 12-month guarantee. We are fully insured, and an ARBOMaster approved applicator.
Can I add another job to the visit?
Yes. Tell us about everything you’d like done and you will get one quote.
Do you offer different sealant colours?
Normally, yes. White, clear and grey are common, and other colours are available for many products, and we agree the colour with you before any work starts.
Can you remove sealant that’s been put over old sealant?
Yes. We remove every layer; over-sealing fails because silicone won’t bond to silicone.
What do you put in the joint?
We choose the sealant for the joint, not the other way round. Movement, water and weather all affect the choice, and we’ll tell you what we’re using.
How long does the work take?
Allow a few hours, depending on how many layers have to come out. You will know the timing when we quote.
What happens if the problem is the tray or the plumbing?
We check for that before we reseal. If the fault is elsewhere, you will know before any work is done.
