The Mastic Doctor team standing beside their branded vans outside an office building
Hampshire · England

Washroom Sealing in Viables

Sealing in commercial washrooms, showers, kitchens and wet areas across Viables, by CSCS-carded applicators. Fully insured and CHAS accredited.

  • Washrooms that look worn because of the sealant
  • Stained sealant around pans and urinals
  • Black mould inside silicone joints that cleaning can’t shift
1
Send details
Send the specification, photos or a marked-up plan.
2
Get a quote
One fixed quote covering the agreed scope.
3
We seal
Failed joints cut out, faces prepared, new sealant laid.
4
Guaranteed
Backed by a 12-month workmanship guarantee.
London, the South East & Scotland
CHAS accredited
£5m public liability

Washroom sealing across Viables

Photos, a specification or a quick description of the joints is enough to start a fixed quote.

Washroom sealing in Viables

Our washroom work covers offices, hotels, schools and colleges, leisure centres and gyms, clinics and care homes, along with staff kitchens and tea points. Product and method follow how hard each area is used and cleaned. Site teams most often ask us about black mould inside silicone joints that cleaning can’t shift and a new bead over an old one coming away, on kitchens and tea points, accessible toilets and changing rooms and showers, trays and wet room floors. Searching for sealant specialists in Viables? We’ve been sealing commercial buildings since 2005, CHAS accredited and a Constructionline member.

A place of Viables’s size will typically have a few buildings with commercial washrooms: a school, a surgery, a pub or café, perhaps a care home. However small, each needs the old sealant removed completely and anti-mould sanitary silicone applied to clean, dry joints.

A 12-month guarantee applies to all our work in Hampshire. Should something we installed fail, call the office on 01277 525 020 or send photos by email and we’ll come back to it.

Where
Viables (RG21, RG22, RG25)
Region
Hampshire
Guarantee
12 months on our workmanship
Quote
A fixed quote before we start
Phone
01277 525 020
Updated
3 November 2026
The Mastic Doctor team beside their liveried vans in front of an office building

Signs you need washroom sealing in Viables

Panels and vanity units move slightly in use, and shower trays shift under foot. A bead that can’t cope with the movement splits along one edge.

Any of the following is a good reason to get the joints checked over:

  • Panel joints letting water behind
  • Mould spotting along silicone joints
  • Discoloured joints around urinals and WC pans
  • Failed sealant behind washroom basins

At a college such as Queen Mary's College, under half a mile north of Viables, washroom and kitchen sealant is best renewed in the holidays or in phases during term.

Before you book anyone

  • Is depth set with backing rod, or bond-breaker tape in shallow joints?
  • Will failed sealant be removed rather than covered?
  • Will CSCS-carded applicators be on site?
  • How long is the guarantee, and what does it include?

How to choose a sealant contractor

When to bring in a specialist

Using site staff can make sense for a small touch-up, but larger jobs are different: a specialist brings efficiency, a consistent finish and a 12-month guarantee.

The visible bead is only part of the job. Backing rod, primer where specified and a joint designed to move with the building are easy to get wrong without experience.

Surface by surface

Kitchens and tea points

Kitchen joints need to be smooth and sealed so they can be cleaned properly. Where food contact is possible, we use a hygienic, food-safe sealant.

Wet-room floors and floor-to-wall joints

Floor edges in wet areas are where water most often escapes. We reseal the floor-to-wall junctions and around drains where sealant is used.

Common questions from Viables clients

Will you plan work around the academic year at somewhere like Queen Mary's College?

Yes. Education sites typically want the work in vacations or in phases during term, and we plan to suit. We are CHAS accredited and a Constructionline member, and paperwork such as RAMS is confirmed with the quote.

Will our hotel in Viables need to close for the work?

In most cases no closure is needed: we work room by room or floor by floor. The plan is built around your bookings.

How do I request a quote?

You can use the quote form on this site; alternatively, phone 01277 525 020 or email a schedule or drawings. Include photographs or drawings if you have them.

Will you come and look before quoting?

Many jobs can be quoted from photos, drawings or a joint schedule. If the job needs a look first, we’ll arrange a visit before quoting.

Are you CHAS accredited?

Yes. Mastic Doctor is CHAS accredited and a Constructionline member.

Can weather delay the job?

It can, for external work. Sealant won’t bond properly to a wet or frosty joint, so external work may be moved if conditions aren’t right. Indoors, the weather is rarely a problem.

Are you fully insured?

Yes. We’re fully insured, including public liability cover.

Keeping the joints sound

Problems stay small when the joints are checked regularly. In particular:

  • Mention any site permits or estates rules at quote stage
  • Keep a record of which washrooms need attention
  • Keep washrooms out of use until we say the sealant has cured
  • Keep extract fans working and vents clear

Any failure in our workmanship within the 12-month guarantee is ours to put right. After that, a routine look catches failing joints early.

A split joint at a shower tray can leak for a long time before anyone sees it. By then, other trades may be needed as well, so reseal when you first spot a split.

When something else is needed

Part of a good diagnosis is knowing where sealant stops. We’ll tell you if the real problem is one of these:

  • Condensation from failed extract fans
  • Leaks through tanking or membranes below the finishes
  • Vanity carcasses that have swollen

Not sure which it is? You can call the office on 01277 525 020 or send details through our quote form and we will tell you honestly.

Where we work in Viables

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

Diagnose, treat, sign off

We bring the products specified for the job, along with primers and backing rod. Joint faces are cleaned back to sound, dry surfaces, primer goes on where the manufacturer specifies it, and each bead is tooled to a neat concave finish. Work in places the size of Viables is planned as a single visit where we can. Photos with rough sizes let us arrive with everything needed.

  1. We agree which washrooms close and when.
  2. Leaks, loose panels or damp are pointed out first.
  3. Failed sealant and residue are stripped out.
  4. The right sanitary or food-safe sealant is applied.
  5. We give you a reopening time for every room.

Before we start on site

  • Confirm the product named in the specification
  • Agree which areas must stay open
  • Tell us your opening times and when work is allowed

Request a quote

Send details, get a quote, we seal, guaranteed: that’s how every job runs. To take the first step, call the office on 01277 525 020 or send photos by email.

Get a price

Read more

Toilets, showers and kitchens around Viables

At about 46 miles from central London, Viables is within reach of the capital, within the office belt around the capital. Office washrooms on business parks see heavy weekday use, so we work a block of facilities at a time. A good number of hotels sit less than 2 miles from Viables. Hotel en suites take daily use, and tired silicone at trays and basins is one of the first things guests notice.

In a centre such as St Michael's Retail Park, which lies west of Viables, public washrooms are resealed a block of facilities at a time. For a hotel such as Audleys Wood Hotel, which lies south-east of Viables, resealing en suites a few rooms at a time keeps the rest available.

Viables is about 1 mile south-east of Basingstoke, in Hampshire. Looking for washroom sealing in Viables? We can help. We work across 723 places in Hampshire, from busy centres to rural villages. For work in that direction, see our Reading page, about 15 miles away.

Anyone looking for washroom sealing in RG21, RG22 and RG25 gets the same process as the rest of our area: send details, get a quote, we seal, guaranteed. For a building on Grove Road, Porter Road and Morley Road or nearby, we can quote for washrooms and wet areas. Nearby places we also cover include Cliddesden (1 mile south), Eastrop (1 mile north), Oakridge (1 mile north), Lychpit (2 miles north-east) and Old Basing (2 miles north-east) for washrooms and wet areas. Further afield, our area takes in Farnborough (14 miles east), Fleet (11 miles east), Aldershot (14 miles east), Alton (8 miles south-east), Yateley (13 miles north-east) and Tadley (8 miles north).

Local landmarks in Viables

Recent enquiries here include premises near The Costello School, Queen Mary's College and Hackwood Park and the streets around them. Viables’s nearest station is Basingstoke station, roughly 1.3 miles north of the centre. Other landmarks nearby include Willis Museum (0.9 miles north) and Festival Place (1.1 miles north). For a walk, there’s The Mill Field and Farleigh Hill.

Map of Viables © OpenStreetMap contributors
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