Shetland Islands · Scotland
Gremista Commercial Sealant
Washrooms, bathrooms and kitchens in Gremista need attention? We remove the old material, prepare the joints and seal them properly, with a 12-month guarantee.
- Black, stained silicone in guest bathrooms
- Joints that need doing before an inspection or audit
- Split sealant around staff kitchen worktops and sinks
How the job changes by surface
Student & care accommodation
Many accommodation blocks have rows of similar en suites. A room-by-room programme keeps the job efficient.
Welfare facilities
Welfare facilities, shower rooms and changing areas need to stay usable. We can plan the work in sections.
Commercial sealant in Gremista
Bigger commercial jobs in Gremista begin with a site walk, where we agree the rooms, the order and the hours. After that, you get one clear quote. We work on office washrooms & kitchens, rental portfolios and hotel bathrooms, and common reasons people get in touch are mouldy washroom sealant that staff and guests notice and sealant failing again soon after quick repairs.
Work in a place like Gremista is planned ahead, journey included, so it can be fitted around bookings or opening times where possible.
Whatever the size of the job, it’s backed by our 12-month guarantee.
- Location
- Gremista (ZE1)
- Region
- Shetland Islands
- Guarantee
- A year, on every job
- Quote
- A clear quote up front
- info@mrmastic.co.uk
- Page updated
- 26 October 2026
More services for Gremista
Commercial sealant around Gremista
For seaside hotels, guest houses and holiday lets around Gremista, busy months put washrooms and kitchens under pressure, so it’s worth checking the sealant before the busiest weeks. Island jobs need planning around ferries and the weather, so the more notice, the better.
For site and facilities teams at buildings such as Anderson High School, busy washrooms and kitchens can be resealed in phases so they stay open.
Gremista is about 1 mile north of Lerwick, in the Shetland Islands. For commercial sealant in and around Gremista, please email us at info@mrmastic.co.uk for a quick quote. We are based in Crawley and cover the Shetland Islands, Gremista included. Across the Shetland Islands, we cover 63 places, Gremista among them.
We work across ZE1 for commercial sealant and the streets around it. Streets in the area include Gremista Road, Arlanda Yard and Holmsgarth Brae. We also cover Heogan (1 mile east), Lerwick (1 mile south), Sound (2 miles south), Gunnista (2 miles east) and Veensgarth (2 miles west). For island and remote addresses, a little more planning is needed, so let us know when you get in touch.
Around Gremista
Locally, jobs take us to homes and businesses close to Gilbertson Park and the streets around them. Other landmarks nearby include Montfield Hospital (1.2 miles south) and Shetland Textile Museum (less than half a mile south). The countryside around Gremista includes Loch of Kebister and Setter Hill.
What we cannot put right
Some problems need a builder, plumber or other trade rather than us:
- Leaking pipework, valves or wastes (a plumber’s job)
- Assessing what fire stopping a building needs
- Poor ventilation that keeps bringing mould back
If in doubt, email us at info@mrmastic.co.uk and we will say what we think.
What we seal
- Retail & leisure sites
- Rental portfolios
- Hotel bathrooms
- Office washrooms & kitchens
- Welfare facilities
- Student & care accommodation
Work for landlords, hotels and businesses
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.
We also work for businesses, from offices to washrooms and kitchens. On commercial sites, working times can be discussed when we quote.
When to call us in Gremista
A rushed reseal between guests rarely lasts. New silicone over old, joints that weren’t dried, or an unsuitable product means the joint fails again soon.
These are the problems we are asked about most:
- Shower leaks reaching the floor below
- Black, stained silicone in guest bathrooms
- Split sealant around staff kitchen worktops and sinks
- Washrooms that need sorting before an inspection
For buildings such as St Margaret's Roman Catholic Church, halls and community kitchens see heavy use, and their sealant shows it.
What your quote should include
- Which colour the sealant will be
- How the surfaces are prepared before sealing
- Whether all the old sealant comes out first
- What insurance they hold
How to look after the new joints
Once the sealant has cured, a few habits help it last:
- Log resealing so you know what’s due
- Pass on the cure time to whoever cleans the rooms
- Add sealant to your planned maintenance checks
- Put a squeegee in each shower
Each room is handed back with its cure time, normally around 24 hours. Pass it on to housekeeping or cleaners so nobody showers or cleans the joint too early.
Planned resealing is easier to manage than emergency repairs. Rooms can be scheduled around occupancy and staff, instead of rooms closing without warning.
What affects the quote in Gremista
Some jobs are bigger than they look, and some smaller. What affects the quote:
- Working hours on commercial sites
- Whether the work is at height
- Mould in or behind the old joints
- How much there is to do
Combining jobs into one visit generally makes better use of the time than several visits, so tell us about everything that needs sealing. You will get one clear quote for the whole job.
Helping us quote
Photos by email are helpful but not essential. Try to tell us:
- The address or postcode of the job
- What’s wrong with the joints now
- Any previous sealing or DIY work
- The rough size of the job
If you are in Gremista and need commercial sealant, drop us a line at info@mrmastic.co.uk. Tell us what the problem is and where, and we’ll agree the price before any work begins.
Gremista questions
Do you take on hotel work around Gremista?
Yes, hotels and guest houses are among the places we work. Rooms can be done a few at a time, so the building stays open.
Is Gremista in your area for commercial sealant?
Yes. Our work covers the whole of Scotland, and Gremista is part of that. Just send an email to info@mrmastic.co.uk with a few details of the job, and we’ll send you a clear quote.
Can you match the sealant colour?
Yes. Sealants come in white, clear, grey and other colours, and we will agree it with you first.
How long will you be here?
Most jobs take a few hours for a single washroom, longer for a whole building, including preparation and clearing up. Your quote will say how long we expect yours to take.
Can you supply method statements and risk assessments?
Tell us what your site asks contractors for. We will confirm what we can provide alongside the quote.
Can I do it myself?
It depends on the job. Work at height, movement joints, fire-rated gaps and large areas are best left to a professional.
What should I tell you?
Where the job is, what the problem is and roughly how big it is. Photos by email help too.
How soon can a room be used after resealing?
Most areas can be used after around 24 hours. Each room is handed back with the cure time for the product used.
What happens on the day
On the day, we start by going over the job with you, so you know exactly what we are doing. We protect the surfaces around the joints before any work begins. Most jobs take a few hours per area, with larger sites planned over several visits. Somewhere like Gremista may be a longer drive, and the journey is planned ahead. Tell us about tracks, gates, a ferry crossing or anything unusual about getting there.
- We agree a programme with you: which rooms, in what order, at what times.
- Tell us what paperwork your site needs, and we confirm what we can supply before work begins.
- In each room, the old bead comes out and the joint is cleaned and treated.
- Anti-fungal sanitary silicone goes into wet areas, with suitable sealant elsewhere.
- Rooms are handed back in order, each with its cure time.
Getting ready for the visit
- Keep children and pets away from the work area
- Tell us if parking is tricky
- Mention if the joints have been sealed before
Ask for a quote
It all starts with a short chat. Describe the problem, the location and the size of the job, and we will explain how we’d tackle it. When it suits you, send an email to info@mrmastic.co.uk.