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

Commercial washroom and wet-area sealing in Reading

Sealing in commercial washrooms, showers, kitchens and wet areas in Reading. CHAS accredited and fully insured, with a 12-month guarantee.

  • Open joints at the base of cubicle panels
  • Stained sealant around pans and urinals
  • Failed sealant behind washroom basins
1
Send details
Send the specification, photos or a marked-up plan.
2
Get a quote
Scope agreed and priced before anything starts.
3
We seal
Prepared joints, the specified product, a tidy finish.
4
Guaranteed
Signed off, with 12 months’ guarantee.
South East, London & Scotland
Constructionline member
£5m PL insurance

Washroom sealing for businesses in Reading

Tell us what needs sealing and where, with photos or drawings if you have them, and we’ll price it.

Why deal with it now?

Bleaching black sealant may lighten it for a few days but the growth is inside the bead and returns. A full reseal deals with it and your cleaning team stops chasing it. On a busy site in a large place like Reading, a failed joint gets worse with every day of use. Catching it early keeps the fix simple.

The work involved drives the cost: removing old material, preparing the joints, the product, the access and how the work is phased. Call for a fixed quote and we’ll explain how it’s made up.

Why choose Mastic Doctor in Reading

  • Fixed quotes based on photographs, drawings or a visit
  • A range of standard colours, depending on the product
  • CHAS accredited
  • 12-month guarantee on workmanship

Read our cost guide and our accreditations.

Washroom sealing in Reading

You can’t shut every toilet in an office, school or hotel at once. Work is phased by room or by section, so staff, guests or pupils always have somewhere to go. Tell us your site hours and access windows and we will plan around them. If you have black mould inside silicone joints that cleaning can’t shift and discoloured joints around urinals and WC pans, we can help. Searching for sealant specialists in Reading? We have been sealing commercial buildings since 2005.

For washrooms on healthcare sites in large towns like Reading, infection-control rules shape the job. We plan the work with the estates team and follow the site’s estates and infection-control requirements.

We sign every job off with a 12-month guarantee. The promise is simple: if our work fails within that year, we put it right.

Location
Reading (RG6, RG31, RG1, RG30)
Wider area
Reading
Cover
12 months on every job
Price
A fixed quote before we start
Call
01277 525 020
Last updated
3 November 2026
Mastic Doctor team members lined up next to their branded vans outside an office building

On site: what to expect

We schedule the visit to fit the site hours and access windows you give us. On the day, the work area is kept contained and tidy, and we check in with your contact before moving on to each new area. Town-centre jobs in Reading can mean limited parking and loading, whereas edge-of-town units normally have yard space. Let us know what’s there when you send details.

  1. First, the phasing is agreed so facilities stay open.
  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 confirm reopening times for each washroom.

Getting the site ready

  • Confirm the product named in the specification
  • Tell staff and tenants when we will be in
  • For older buildings, check the asbestos register before work

Get a fixed quote

We quote a fixed sum against the scope you give us, so you know the figure before anyone is on site. To ask for one, ring 01277 525 020 or send details through our quote form.

Get a price

Related advice

Should maintenance staff do it?

Redoing a failed joint typically costs more than getting it right at the outset, since all of it has to come out and the faces be cleaned back again. For that reason, many FMs and contractors use a sealant specialist from the outset.

The visible bead is only part of the job. Correct depth, the right primer and a sealant matched to the movement are where general trades tend to cut corners.

When it isn’t the sealant

Honesty saves time and money. New sealant won’t cure:

  • Water escaping beneath the floor rather than through a joint
  • A room that stays damp because ventilation isn’t working
  • Leaking pipes, traps, wastes or cisterns, which need a plumber

Not sure which it is? You can call the office on 01277 525 020 or email the details over and we will tell you honestly.

Joints and surfaces we work on

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

How the job changes by surface

Wet-room floors and floor-to-wall joints

Wet floors are common in accessible showers and changing rooms, so their perimeter joints get close attention.

Changing rooms and gyms

Changing rooms in gyms and leisure centres stay wet and warm so sealant there works very hard. We use anti-mould sanitary silicone throughout.

Commercial washrooms in Reading

Plenty of hotels sit less than 2 miles from Reading. Each has en suites, back-of-house toilets and kitchens with sealant that moulds and splits. Central London is about 38 miles from Reading, 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.

At a college such as Reading College, 1 mile to the north-east of Reading, washroom and kitchen sealant is best renewed in the holidays or in phases during term. Clinical washrooms at sites like Spire Dunedin Hospital (to the west of Reading) are scheduled with the ward so the room is out of use for as little time as possible. Hotels such as Crescent Hotel (under half a mile west of Reading) have en suite bathrooms where tired silicone at the bath, tray and basin is replaced room by room.

Reading is about 38 miles west of London, in Reading. If you’re looking for washroom sealing in Reading, we can help. Our Reading coverage takes in 17 places.

Anyone looking for washroom sealing in RG6, RG31, RG1 and RG30 gets the same process as the rest of our area: send details, get a quote, we seal, guaranteed. For a building on Downshire Square, Market Way and Market Place or nearby, send details and we’ll quote for washrooms and wet areas. Being close to the A4 and A33, Reading is easy to get to with materials and equipment. Nearby places we also cover include Coley Park (1 mile south-west), West Reading (1 mile north-west), Newtown (1 mile east), Lower Caversham (1 mile north-east) and Whitley (2 miles south-east).

Around Reading

We work on buildings around Eurospeak Language School, University of Reading library and Former Kennet Arms and the streets around them. Other local landmarks include Kendrick School (0.6 miles north-east) and Eldon Square (0.9 miles east). The closest station to Reading is Reading West station, about 0.7 miles north-west of the centre. A little further out are Beaumys Castle (5 miles south) and The Oracle (less than half a mile north-east). The countryside around Reading includes Sonning Hill and Longwater.

Map of Reading © OpenStreetMap contributors

What sets the cost

Each job is priced on its own details. The main factors are:

  • Removal of failed or old sealant
  • The site’s rules and procedures
  • Whether the work must be split into stages
  • How accessible the joints are

The product called for affects the cost, as does the preparation each joint needs, from cutting out to priming and backing rod. Access, phasing and site rules also count.

Details that help us quote

For an accurate fixed quote, we need to understand the site. Useful things to include:

  • Access details, including height
  • The postcode of the building
  • What the building is and how it’s used
  • The asbestos register, for older buildings

For a fixed quote, give us a call on 01277 525 020 or send photos by email, telling us the site location and the nature of the job. Our quote form is another easy route.

Common questions from Reading clients

Can work at a site such as University of Reading fit around teaching?

Yes. We plan campus work around teaching, exams and residence turnarounds. Tell us which site documents you need, such as RAMS, our insurance certificate or CSCS details, and they’re confirmed with the quote.

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

In most cases no closure is needed: we work room by room or floor by floor. Tell us your quiet periods and access windows and we’ll plan around them.

Are you CHAS accredited and on Constructionline?

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

Do you need to remove the old sealant?

We always remove it. New silicone won’t stick to the old so a bead over the top fails quickly.

Will cleaning remove black mould from sealant?

Not for long. The mould is inside the silicone so cleaning only lightens it for a while. Replacing the bead is the lasting answer.

Are you insured?

Yes. We are fully insured, and the certificate can go with your quote.

How long does a typical visit take?

That varies with the scale of the job, though a typical visit normally takes a morning or so for a small washroom, longer where showers and changing rooms are included. For bigger or phased jobs, we’ll set out a timescale with the quote.

Accreditations

Trusted. Accredited. Insured.