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

Commercial washroom and wet-area sealing in Tandridge, Surrey

Washroom sealing in Tandridge, backed by over 20 years in commercial sealing. Fully insured, with a 12-month guarantee.

  • Resealing that didn’t last because the old bead stayed
  • Open joints along basins and vanity units
  • Shower tray joints that have opened up
1
Send details
Drawings, photos, a joint schedule or a site visit.
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.
South East, London & Scotland
CHAS accredited
£5m public liability

Washroom sealing in Tandridge

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

Washroom sealing for commercial buildings in Tandridge

Accessible WCs, showers and changing areas have their own pinch points: shower trays, wet-room floor edges, basins and floor-to-wall junctions. Gaps in those places let water get under the floor or behind panels, so we look at them closely. If you’re dealing with open joints at the base of cubicle panels and shower tray joints that have opened up, we can put it right, whatever the surface. Whoever orders the work in Tandridge, the brief is usually the same: a clear scope, tidy work and joints that don’t fail again.

In and around smaller places like Tandridge, washroom work is often in halls, pubs, primary schools, care homes and holiday accommodation. Sealant that has gone black with mould normally can’t be cleaned, so it is cut out and replaced.

Our workmanship is guaranteed for 12 months, in Tandridge 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
Tandridge (RH8, RH9)
Region
Surrey
Guarantee
12 months on our workmanship
Quote
Quoted before any work starts
Telephone
01277 525 020
Updated
3 November 2026
Mastic Doctor team members lined up next to their branded vans outside an office building

Our process

Occupied buildings need a little choreography. The work area is signed and kept contained, with routes through the building left open and work section by section so the rest of the building stays in use. For work around Tandridge, we aim to finish in one visit, so we ask for photographs and rough sizes first. That way the right products come on the day.

  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.

Preparing the site

  • Tell us your opening times and when work is allowed
  • Have the specification and drawings to hand
  • Send asbestos survey details if the building is pre-2000

Ask for a quote

For a fixed quote, phone 01277 525 020 or email a schedule or drawings. You can also send details through our quote form.

Get a quick quote

Related advice

What we are called out for in Tandridge

Occasionally a joint keeps failing because of a problem behind it: a loose panel, a leaking waste or water coming through the wall. We check for that first and say if it needs a plumber or another trade.

It’s worth sending us details if you spot any of the following:

  • Black mould inside silicone joints that cleaning can’t shift
  • Discoloured joints around urinals and WC pans
  • Panel joints letting water behind
  • Resealing that didn’t last because the old bead stayed

For a school such as St Peter's CofE Infant School, washroom and kitchen sealant can be renewed around term dates.

Questions to ask before you book

  • What site paperwork they can supply
  • Will failed sealant be removed rather than covered?
  • The named product and why it was chosen
  • Their plan for phasing and protecting the area

Our contractor checklist

Maintenance after handover

Problems stay small when the joints are checked regularly. Specifically:

  • Keep washrooms out of use until we say the sealant has cured
  • Don’t leave trays and floors sitting wet
  • Include joints in routine washroom inspections
  • Don’t leave an open joint at a basin or tray

Keep extract fans working and vents clear. Constant damp lets mould take hold even on anti-mould grades so report fans that aren’t working to your building services team.

Leaks through tray and wet-floor joints can go unseen until a ceiling marks below. At that stage, boards or ceilings may need repair, so reseal when you first spot a split.

Honest limits

A proper diagnosis includes knowing what sealant can’t do. You’ll hear from us if the cause turns out to be one of these:

  • Leaks through tanking or membranes below the finishes
  • Vanity carcasses that have swollen
  • A dripping waste or valve behind a panel

Not sure which it is? You can ring 01277 525 020 or email a schedule or drawings and we’ll tell you honestly.

Joints and surfaces we work on

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

Toilets, showers and kitchens around Tandridge

Tandridge lies roughly 18 miles out from central London, in a commuter belt where offices and business parks are common. Washrooms in commuter-belt offices take constant weekday traffic, so we phase work to keep some facilities open. The 2 miles around Tandridge include two care or nursing homes. In a care setting, a mouldy or lifting joint in a wet room is a hygiene issue as much as a cosmetic one. Each room is kept out of use only as long as the sealant needs.

En suites at hotels like The Bell Hotel (1.4 miles west of Tandridge) are cleaned daily, which wears silicone over time. Clinical washrooms at sites like Foetal Alcohol Spectrum Disorders Clinic (1.9 miles north-east of Tandridge) are scheduled with the ward so the room is out of use for as little time as possible.

Tandridge is about 2 miles south-west of Oxted, in Surrey. Across the RH8 postcode area, the process is the same: details in, fixed quote out, then sealing and a 12-month guarantee. Tandridge is one of 379 places we cover in Surrey for washrooms and wet areas. We also cover London, around 18 miles from Tandridge.

We cover the RH8 and RH9 postcode districts. Streets here include Jackass Lane, Tandridge Lane and The Walk. We also cover Church Town (1 mile north-west), South Godstone (1 mile south-west), Hurst Green (2 miles east), Godstone (2 miles north-west) and Oxted (2 miles north-east). Nearby towns on our patch include Epsom (12 miles north-west), Horley (7 miles south-west), Redhill (6 miles west), Ewell (12 miles north-west), Reigate (7 miles west) and Caterham (4 miles north-west).

Local landmarks in Tandridge

Locally, jobs take us to sites close to Bay Pond and Oxted School and the streets around them. The nearest railway station is Godstone station, roughly 1.6 miles south-west. Nearby you’ll also find Bletchingley Castle (3.2 miles west) and East Surrey Museum (3.5 miles north-west). For a walk, there’s Botley Hill and Mercers Lake.

Map of Tandridge © OpenStreetMap contributors

Why deal with it now?

Gaps and mould in joints give dirt and bacteria somewhere to sit which matters most in healthcare, food and education settings. Sound, smooth joints are much easier to keep clean. Halls, stores and units around places like Tandridge may not be checked every day, which gives a failed joint time to do damage. Renewing joints in good time avoids the problem.

Whether it’s a single area or a whole estate, the same things set the price: scope, access, product and programme. Call for a quote, and you’ll have a fixed figure to work with.

Why us?

  • CSCS-carded applicators
  • Fully insured
  • Colour agreed before work starts
  • One number for every site we cover

Read what affects the cost and our accreditations and insurance.

When to bring in a specialist

For most general trades, sealant is a sideline. A specialist prepares properly, controls joint depth and picks a product with the right movement class.

What you see is the finished bead, but most of the work is hidden. Correct depth, the right primer and a sealant matched to the movement are where general trades tend to cut corners.

Questions about Tandridge

Would you work within a site like Foetal Alcohol Spectrum Disorders Clinic?

Yes, provided the work is planned with the site’s estates team. Before anything starts, the estates team agrees permits, inductions and infection-control measures with us.

Is Tandridge too small for you to travel to?

No. Small places get the same service as large ones. London and every South East county are within our area. Good photographs up front let us bring everything on the first visit.

Do you hold CHAS accreditation?

Yes. CHAS accredited, Constructionline member, and our applicators hold CSCS cards.

Do you do washroom sealing in healthcare settings?

Yes. We work to your estates and infection-control requirements and any site permits. The work is phased around patients or residents.

Do your applicators hold CSCS cards?

Yes. Our applicators hold CSCS cards, as many construction sites ask for.

Do you have public liability insurance?

Yes. Our insurance certificate can be sent alongside the quote.

Do you use special sealant for toilets and showers?

Sanitary silicone with anti-mould additives for most washroom joints. We use neutral-cure versions on stone, some metals and near mirrors.

Accreditations

Trusted. Accredited. Insured.