The Mastic Doctor team standing beside their branded vans outside an office building
Shetland Islands · Scotland

Commercial washroom and wet-area sealing in Sandwick, Shetland Islands

Looking for washroom sealing in Sandwick? It’s simple: send details, get a quote, we seal, guaranteed.

  • Black mould inside silicone joints that cleaning can’t shift
  • Complaints from staff, guests or users about tired washrooms
  • Shower tray joints that have opened up
1
Send details
Send the specification, photos or a marked-up plan.
2
Get a quote
A fixed quote for the work, with the scope in writing.
3
We seal
CSCS-carded applicators, the right product for each joint.
4
Guaranteed
12-month guarantee on our workmanship.
South East, London & Scotland
Constructionline member
Fully insured: £5m PL

Washroom sealing for Sandwick sites

Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.

Building owners, agents and FMs in Sandwick

Planned maintenance programmes are welcome: resealing failed joints building by building, on a schedule that suits your budget. Sites in Sandwick can sit alongside others in a wider programme.

Main contractors use us as their sealant subcontractor. Programme, specification and site rules come first, and our applicators hold CSCS cards.

Washroom sealing in Sandwick, done properly

Washroom joints need the right sealant, not whatever is to hand. Sanitary silicone contains additives that resist mould, and neutral-cure versions avoid the damage acetoxy types can do to some metals, stone and mirror backings. Where food contact is possible, we use a hygienic, food-safe grade. If you’re dealing with gaps where vanity tops meet the wall and a new bead over an old one coming away, we can put it right, on vanity units and basins, showers, trays and wet room floors and accessible toilets and changing rooms alike. Most enquiries from Sandwick start with one failed joint and grow into a wider look at the building: we check the joints around it and give you an honest view of what needs doing now and what can wait.

In smaller Scottish places like Sandwick, commercial washrooms are typically in hotels, pubs, schools, care homes and community halls. Black sealant normally can’t be cleaned, so it is removed and replaced with anti-mould sanitary silicone.

Our workmanship is guaranteed for 12 months, in Sandwick as everywhere else we work. If a joint we sealed fails because of how it was installed, we come back and put it right.

Place
Sandwick (ZE2)
Wider area
Shetland Islands
Cover
12 months on every job
Quotes
Fixed quote, scope in writing
Phone
01277 525 020
Updated
3 November 2026
Mastic Doctor team members lined up next to their branded vans outside an office building

When to call us in Sandwick

Much of the failed sealant we remove was applied over old silicone or residue. Silicone won’t adhere to a silicone bead, so it soon lets go.

Site and facilities staff are often the first to spot these:

  • Discoloured joints around urinals and WC pans
  • Washrooms that look worn because of the sealant
  • Mould spotting along silicone joints
  • Panel joints letting water behind

Around Sandwick, washroom joints are resealed by removing the old silicone completely and laying anti-mould sanitary silicone on dry surfaces.

Questions to ask before you book

  • Their public liability cover
  • What the guarantee covers, and for how long
  • Will failed sealant be removed rather than covered?
  • Do they follow the manufacturer’s priming guidance?

Our contractor checklist

Washroom sealing in Sandwick: the local picture

Sandwick is within about 1 mile of the coast, and seaside hospitality usually has a peak season that works washrooms hard. Heavy seasonal use is hard on shower and basin sealant, so resealing in the quieter months keeps rooms ready. Sandwick is on Scotland’s drier eastern side. Mould in sanitary sealant comes down to ventilation and use more than the weather outside.

Phased work lets washrooms in and around Sandwick stay partly open while sealant is renewed.

Sandwick is about 14 miles north of Lerwick, in the Shetland Islands. If you are looking for washroom sealing in Sandwick, we can help, as we do across the Shetland Islands. Sandwick is one of 63 places in the Shetland Islands on our list.

Business premises anywhere in ZE2 are within our area. For a building on Rocky Road, Saeter and Harlsdale or nearby, send details and we will quote for washrooms and wet areas. Nearby places we also cover include Clate (1 mile south), Symbister (1 mile north-east), Hamister (1 mile north), Huxter (1 mile east) and Tripwell (2 miles north-east). Bigger towns within reach include Lerwick (14 miles south), Sound (14 miles south) and Brae (12 miles west). Where a site is remote or on an island, travel and materials need planning ahead, so the full address helps from the start.

Landmarks near Sandwick

Not far away are Ward of Clett and Loch of Sandwick.

Map of Sandwick © OpenStreetMap contributors

Diagnose, treat, sign off

When we get to site, we sign in, go through any site induction and check how permits are handled. Floors, finishes and fittings next to the joints are covered before anything is cut or cleaned, with the work itself typically taking a few hours for one toilet block, with bigger buildings phased across a number of visits. For a building near Sandwick, directions, keys and a contact on the day are worth sorting early. That goes into the plan alongside the quote.

  1. We survey each room, count the joints and note anything behind them that needs another trade.
  2. The phasing is agreed so there are always facilities open.
  3. The failed silicone is stripped and every face scraped clean of residue.
  4. We clean and dry every surface so the new sealant can grip.
  5. New sanitary silicone with anti-mould additives goes in and is tooled neat.
  6. Each room is handed back once the sealant has had its cure time.

Before we start on site

  • Send your site hours and access windows
  • Warn occupants and staff about the work
  • Point out any areas we must not close

Request a quote

Photos, drawings or a schedule of the joints are often enough for a fixed quote. If the job needs a look first, we’ll arrange a site visit.

Ask for a quote

Read more

When something else is needed

A few problems need another trade or a different fix, and we point that out rather than sealing over them:

  • Vanity carcasses that have swollen
  • Loose panels, vanity units or tiles, which need fixing first
  • Water escaping beneath the floor rather than through a joint

If in doubt, speak to us on 01277 525 020 or use the quote form and we will say what we think.

What we seal

  • IPS panels and cubicles
  • Kitchens and tea points
  • Vanity units and basins
  • Accessible toilets and changing rooms
  • Urinals and WCs
  • Showers, trays and wet room floors

When to bring in a specialist

The visible bead is only part of the job. Backing rod, primer where specified and a joint designed to move with the building are where general trades tend to cut corners.

Site maintenance staff can often handle a short internal joint. Where it goes wrong is preparation: sealing over old material, sealing onto damp or dusty surfaces, or a product that can’t take the movement.

How the quote is worked out

To price the job, we consider:

  • Distance, for remote addresses
  • The total length or number of joints
  • The site’s rules and procedures
  • Which sealant the job calls for

Pricing washrooms and wet areas depends on quantities, condition and access, and any specification that applies. Call for a quote.

Sending details for a quote

To price the job accurately, we need to understand the site. Useful things to include:

  • Whether an asbestos survey exists
  • Where the site is, with the postcode
  • Any specification or named product
  • A wide shot and a close-up of the area

A handful of photographs and a postcode is the fastest way to a quote. Send them through the quote form, or speak to us on 01277 525 020 or email drawings and photos if you’d rather talk the job through.

Your questions answered

Do you work on the island where Sandwick is?

Yes. Islands are part of our area, Sandwick included. We group island work where we can and plan around the crossings.

Will the toilets in our Sandwick building be out of use?

Rarely all at once: work is phased so some facilities are always available. We’ll tell you the curing time for the product before we start.

Do you offer coloured sealant?

Often, yes. Many products come in a range of standard colours, and matching to RAL references or surrounding finishes is often possible. We’ll confirm the colours available for the specified product.

Can you clean the mould off instead of resealing?

Normally not. Mould grows into the sealant itself so cleaning only lightens it for a while. Replacing the bead is the lasting answer.

Do you need to remove the old sealant?

We strip every bit of the failed bead and wipe away the residue first. That’s what makes the new joint last.

Do you use special sealant for toilets and showers?

It depends on the joint. Washrooms and showers take anti-mould sanitary silicone, and food areas take a hygienic, food-safe sealant where food contact is possible.

How much does the work cost?

There isn’t a price list, because every site is different. With photographs or drawings, we can give you a fixed quote.

Accreditations

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