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

Commercial washroom and wet-area sealing in Ash, Surrey

We carry out sealing in commercial washrooms, showers, kitchens and wet areas in Ash. Send photographs or drawings for a fixed quote.

  • Sealant stained black around basins and showers
  • Panel joints letting water behind
  • Kitchen worktop joints that can’t be kept clean
1
Send details
Photos, drawings or a schedule, or we visit.
2
Get a quote
A fixed price, with what’s included set out clearly.
3
We seal
The right sealant, to the right depth, neatly finished.
4
Guaranteed
Signed off, with 12 months’ guarantee.
Covering the South East & Scotland
CHAS accredited
£5m PL insurance

Washroom sealing across Ash

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

Washroom sealing for commercial buildings in Ash

Accessible WCs, showers and changing areas have their own pinch points: wet-floor edges, tray perimeters, basin tops and the line where flooring meets the wall. An open joint there lets water track under flooring or behind wall panels, so we look at them closely. If you’re dealing with panel joints letting water behind and resealing that didn’t last because the old bead stayed, we can help, on accessible toilets and changing rooms, urinals and WCs and IPS panels and cubicles alike. A single leaking joint is often how a building in Ash first comes to us: we check the joints around it and give you an honest view of what needs doing now and what can wait.

Jobs in a smaller place such as Ash are often one building: a school’s toilets, a café kitchen, a surgery’s washrooms. A list and photos let us quote and plan so it’s done in one visit where possible.

We sign every job off with a 12-month guarantee. It’s a plain promise: if the work we did fails within twelve months, we return to fix it.

Mastic Doctor team members lined up next to their branded vans outside an office building
Location
Ash (GU12, GU10)
Region
Surrey
Cover
A 12-month guarantee
Price
A fixed quote before we start
Phone
01277 525 020
Updated
3 November 2026

After the work

Keep the joints in good shape with a few simple steps:

  • Keep extract fans working and vents clear
  • Note failing joints building by building
  • Mention any site permits or estates rules at quote stage
  • Include joints in routine washroom inspections

Any failure in our workmanship within the 12-month guarantee is ours to put right. Beyond that, regular checks keep small problems small.

In food areas, cleanability is something environmental health officers look at. Failed sealant around sinks and worktops is easy to put right in good time.

Your questions answered

Can you work around term dates at a campus such as University for the Creative Arts?

Yes. Education sites normally want the work in vacations or in phases during term, and we plan to suit. Any paperwork you need, from RAMS to our insurance certificate and CSCS details, is confirmed with the quote.

Is Ash off your patch?

Not at all. Ash is within our area. We work across Greater London and the South East. 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.

How much does the work cost?

Every job gets its own fixed quote. For yours, ring 01277 525 020 or send details through our quote form with a description of the work.

Are you fully insured?

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

Can one quote cover more than one building?

Yes. Multi-site work and planned programmes are a core part of the service, planned site by site to suit how each building is used.

Do you work in hospitals, clinics and care homes?

We do. Your infection-control rules, estates requirements and permits are followed, and phase the work so areas keep facilities.

Different surfaces, different methods

Showers and trays

A tray flexes every time it’s used and is constantly wet. Tray joints are where many washroom leaks start.

Changing rooms and gyms

Showers, floor edges and vanity units in changing rooms all need sound sealant and we look at them as one job.

Wet areas in Ash’s workplaces

Ash is about 32 miles from central London, within the office belt around the capital. Business park offices have washrooms in daily use by staff, so we work a block of facilities at a time. Three care or nursing homes sit less than 2 miles from Ash. 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.

Colleges such as Aldershot College (to the west of Ash) have toilets, changing rooms and catering kitchens that can be resealed around term dates. Halls of residence and teaching buildings at universities such as University for the Creative Arts (4.2 miles south-west of Ash) are easiest to reseal during vacations.

Ash is about 2 miles east of Aldershot, in Surrey. Anywhere in GU12, the process is the same: send details, get a fixed quote, we seal, and the work is guaranteed. 379 places across Surrey fall within our area, including Ash. We also cover Reading, some 18 miles away.

Business premises anywhere in GU12 and GU10 are within our area. For a building on Ash Church Road, Square Field Way and Littlefield Close or nearby, send details and we will quote for washrooms and wet areas. You will find Ash on or near the A331 and B3206. Nearby places we also cover include Ash Green (1 mile east), Tongham (1 mile south-west), Ash Vale (1 mile north), Seale (2 miles south) and Aldershot (2 miles west). Bigger towns within reach include Guildford (6 miles east), Woking (8 miles north-east), Camberley (6 miles north), Farnham (4 miles south-west), Egham (15 miles north-east) and Frimley (5 miles north).

Around Ash

Around Ash, our work takes us to commercial buildings near Aldershot Park, The Connaught School and The Dover Arms, among other places. Ash’s nearest station is Ash station, about 0.5 miles north-east. A little further out are Farnham Castle (4 miles south-west) and Ash Museum (less than half a mile north-east). Open spaces near Ash include Rowhill Nature Reserve and Hog's Back.

Map of Ash © OpenStreetMap contributors

Why it’s worth doing now in Ash

A tired washroom says a lot about how a building is run. Visitors notice black sealant even when the room is otherwise spotless. Fresh sanitary silicone lifts a room with very little disruption. Sealant hardens, cracks and loses grip with age, UV and movement. Renewing it in good time keeps the building weathertight.

The work involved drives the cost: stripping out, preparation, sealing, access and phasing. Call for a fixed quote and we’ll explain how it’s made up.

Why us?

  • RAL and finish matching where the product range allows
  • Joints cleaned back to sound surfaces
  • CHAS accredited
  • A Constructionline member, so easy to vet

Read how commercial sealant jobs are priced and our accreditations.

When to call us in Ash

Sometimes the sealant fails because something behind it is moving or wet: loose fixings, a dripping trap or damp in the wall. We check for that first and say if it needs a plumber or another trade.

If one of these sounds familiar, it’s time for a closer look:

  • A new bead over an old one coming away
  • Kitchen worktop joints that can’t be kept clean
  • Gaps where vanity tops meet the wall
  • Stained sealant around pans and urinals

Toilets at places like Westgate Shopping Centre, 2.1 miles to the west of Ash, are cleaned constantly, so silicone needs to be sound and smooth.

What your quote should include

  • Is the sealant right for the movement and the substrate?
  • Their approach to joint depth and backing
  • Whether their applicators hold CSCS cards
  • Health and safety accreditation such as CHAS

Questions to ask before you appoint anyone

How a job runs

We bring the products specified for the job, along with primers and backing rod. Any old material is cut back to clean, sound faces, primer goes on where the manufacturer specifies it, and each bead is tooled to a neat concave finish. What matters most for a job in Ash is a clear list of what needs doing, so send photos of each area. A fixed quote follows.

  1. We start by inspecting the fittings and joints and flagging problems sealant can’t solve.
  2. A phasing plan keeps part of the building’s facilities in use at all times.
  3. We strip out the old bead and clean off the residue left behind.
  4. Each joint is degreased and left dry, because silicone won’t bond to damp or soapy surfaces.
  5. New sanitary silicone with anti-mould additives goes in and is tooled neat.
  6. Rooms reopen after the product’s cure time, and we move to the next.

Preparing the site

  • Have the specification and drawings to hand
  • Send your site hours and access windows
  • Tell staff and tenants when we will be in

Getting a fixed quote

If there’s a specification, drawings or a tender package, send it with your enquiry, and we’ll price the work to it. Smaller jobs need nothing more than photos and a few notes.

Ask for a quote

Related advice

Cost factors for washrooms and wet areas

The price varies from site to site. Expect it to depend on:

  • The total length or number of joints
  • Distance, for remote addresses
  • Induction, permit and paperwork requirements
  • Joint width, depth and condition

Access often affects the price as much as the sealing: easy-to-reach joints are quicker than those that need equipment to get to. Tell us how the joints are reached and call for a quote.

Before you send an enquiry

Good information means a firmer quote. When you get in touch, include:

  • Photos of the joints, close up and from further back
  • Whether an asbestos survey exists
  • Access details, including height
  • The product your specification calls for

A handful of photographs and a postcode is the fastest way to a quote. Upload them with the quote form, or speak to us on 01277 525 020 or send details through our quote form to discuss it first.

Accreditations

Trusted. Accredited. Insured.