Shetland Islands · Scotland
Remedial sealant & repairs in Lerwick, Shetland Islands
We cover Lerwick for removing failed, mouldy or leaking sealant and putting it right. Old sealant removed completely, joints prepared properly and a one-year guarantee.
- Black mould underneath the bead
- Sealant peeling off a dusty or damp surface
- Over-sealed joints coming away
About our remedial sealant in Lerwick
Water on the floor doesn’t always mean failed silicone. Cracked trays, leaking wastes and faulty valves often look like a sealant problem. If that is what we find, we’ll tell you rather than reseal something that will not fix it. If you have thick, messy sealant smeared over tiles and kitchen joints letting water behind the worktop, we can help, whatever the surface.
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. We just plan the journey and access beforehand.
Big or small, you get the same one-year guarantee.
- Where
- Lerwick (ZE1)
- Region
- Shetland Islands
- Cover
- A year, on every job
- Quotes
- A clear quote up front
- info@mrmastic.co.uk
- Last updated
- 26 October 2026
Remedial sealant in Lerwick: local notes
Lerwick is close to the coast. Near the coast, holiday lets and guest houses can see bathrooms used by one guest after another, which wears sealant and grout out faster than in a quiet home. 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.
If you look after a building such as Anderson High School, its toilets, changing areas and kitchens need their sealant renewed like any other building’s.
Lerwick is in the Shetland Islands. From the centre of Lerwick to the outskirts, remedial sealant is available for homes and businesses alike. Our the Shetland Islands coverage runs to 63 places, Lerwick among them.
Work in ZE1 works the same way as everywhere else we cover. You will find streets such as High Street, Market Street and Church Road, all of which we cover. Lerwick sits on or near the A969 and A970. If you are just outside Lerwick, we cover Sound (1 mile south-west), Gremista (1 mile north), Heogan (1 mile north-east), Grindiscol (2 miles south-east) and Gunnista (2 miles north-east). Lerwick is among the bigger towns we cover in the Shetland Islands. Remote and island addresses need a little more planning, so please mention your location when you send an email to info@mrmastic.co.uk.
Local landmarks in Lerwick
Typical jobs here are in homes near Gilbertson Park and Grand Hotel. Nearby you will also find Gilbert Bain Hospital (under half a mile south) and Shetland Museum (under half a mile north-east). Not far away are Setter Hill and Clickimin Loch.
FAQs for Lerwick
Do you cover smaller places like Lerwick?
Yes, Lerwick is covered. Our work covers the whole of Scotland, islands included, and smaller places are part of that. The journey is planned ahead, so it helps to know about access.
Do you cover Lerwick for remedial sealant?
Yes, Lerwick is within the area we cover. We work across all of Scotland. You can send an email to info@mrmastic.co.uk and tell us what needs doing, and we will send you a clear quote.
Do you work for hotels and businesses?
Yes. Larger jobs can be planned room by room or area by area to suit the site.
Can failed expansion joints be resealed?
Yes. Where mortar or filler has been used instead of sealant, it’s removed where it can be, then the joint is sealed properly.
Can you remove old sealant without damaging the bath?
Yes, with care. The old bead is cut and lifted with tools that suit the surface, and the residue is cleaned away. We point out any damage that is already there.
Are you insured?
Yes. We are fully insured for every job we do.
Which products do you use?
We choose the sealant for the joint, not the other way round. Movement, water and weather all affect the choice.
Can landlords and businesses book you?
Yes, we do. Domestic, commercial and hotel work are all part of what we do.
What affects the quote in Lerwick
For a quick quote, just ask. The main things that affect it are:
- How many areas need sealing
- When we can work, for business premises
- The size of the job
- How much old sealant there is and how hard it is to remove
The cost reflects the work involved, not guesswork. That is why we ask a few questions first and agree the price before starting.
Asking for a quote
A few details help us give you an accurate quote. When you ask for a quote, tell us:
- How many joints, rooms or windows are involved
- What the problem is, such as mould, gaps, leaks or cracking
- Any access issues, like height or stairs
- Photos by email, if that’s easy
If you are in Lerwick and need remedial sealant, email us at info@mrmastic.co.uk. Tell us what the problem is and where, and you will get a clear quote before any work starts.
Places near Lerwick
What else we do in Lerwick
Do you need remedial sealant in Lerwick?
Products get mixed up: acrylic caulk in a wet area, a general-purpose sealant on a moving joint, or an acetoxy silicone on natural stone or some metals. None of them last.
Keep an eye out for any of the following:
- Kitchen joints letting water behind the worktop
- Sealant that came away because the surface wasn’t prepared
- Leaks that keep coming back after resealing
- Smears and lumps from a botched reseal
For an older house near a landmark such as St Margaret's Roman Catholic Church, older homes can move a little, which is hard on rigid grout and tired sealant.
What your quote should include
- Whether the sealant suits the joint
- The length of the guarantee
- Whether all the old sealant comes out first
- What happens if they find a problem under the old sealant
Surface by surface
Mouldy bath & shower sealant
Mould can sit behind the silicone, not just in it. We treat the exposed joint once the bead is out.
Over-sealed & botched joints
Every layer has to come out, and silicone residue is cleaned off the tiles too. Only a clean joint will take a new bead.
How to look after the new joints
No joint lasts for ever, but care makes a real difference. Our tips:
- Don’t wait for a small gap to become a leak
- Look for stains below bathrooms now and then
- Keep bleach and abrasives off the bead
- Get the cause of a repeat leak found before resealing
Go easy on the new sealant: a mild cleaner and a soft cloth, with no blades or scourers.
Mould trapped under over-sealed joints spreads unseen. When it finally shows, the whole bead needs to come out.
Work for landlords, hotels and businesses
Hotels need rooms back in use, so we plan the work room by room around your bookings where we can. Hotel work is part of what we do, alongside homes and businesses.
For anyone letting property in or around Lerwick, several properties can be quoted together. Just tell us the addresses and what each one needs.
What we can’t put right
In fairness, there are a few things sealant will not fix:
- Sealant in an older building that needs testing for asbestos first
- Movement from fittings that are not supported
- Plumbing leaks behind walls or under trays
Not sure which it is? You can email us at info@mrmastic.co.uk and we’ll tell you honestly before booking.
Joints and surfaces we work on
- Expansion joints
- Shrunken worktop sealant
- Leaking tray & enclosure joints
- Botched or over-sealed joints
- Failed movement joints
- Mouldy bath & shower sealant
The process
There’s no need to move everything out, only the area right around the joints. We protect the rest, and the job takes a few hours, depending on how many layers have to come out for a typical job. Around Lerwick, distance and access matter more than parking. Let us know how to find you and how to reach the joints, and the visit is planned around that.
- We look at how the sealant has failed and check for movement or a leak path.
- We strip the joint completely, removing any layers below.
- We clean the joint, treat any mould and let it dry.
- We use the right backing and sealant for any joint that moves.
- Finally we finish the joint and talk you through what we found.
Preparing for the visit
- Tell us if parking is tricky
- Mention any leaks or damp you’ve noticed
- Tell us about any previous sealing or DIY attempts
How to get a quote
To get a quote, email us at info@mrmastic.co.uk and tell us where the job is and what the problem looks like. We will give you a clear price before any work starts.