
Dorking washroom sealing
Sealing in commercial washrooms, showers, kitchens and wet areas in Dorking. CHAS accredited and fully insured, with a 12-month guarantee.
- Black mould inside silicone joints that cleaning can’t shift
- Open joints at the base of cubicle panels
- Gaps where vanity tops meet the wall
Need washroom sealing in Dorking?
Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.
Owners, agents and contractors
We take on planned maintenance as well as one-off repairs: working through a building or an estate in stages that fit your budget. Dorking can form part of a wider programme across Surrey.
Agents, factors and owners’ representatives all follow the same route: send details, get a fixed quote, we seal, guaranteed. We can agree access arrangements and keyholder contacts beforehand.
Washroom sealing for commercial buildings in Dorking
You can’t shut every toilet in an office, school or hotel at once. We phase the work one washroom, one bank of cubicles or one changing room at a time, so staff, guests or pupils always have somewhere to go. Tell us your site hours and access windows and we’ll plan around them. The enquiries we see most involve failed sealant in a tea point or staff kitchen and open joints along basins and vanity units, on urinals and WCs, showers, trays and wet room floors and kitchens and tea points. For commercial sealant work in Dorking, you deal with one contact from quote to sign-off, whether it’s one building or several.
For schools in a town such as Dorking, term dates decide when the toilets and changing rooms can be resealed, while offices and care homes need phased work. Give us the dates and times that suit and we will plan the work to fit.
Our workmanship is guaranteed for 12 months, in Dorking as everywhere else we work. If our installation lets you down in that time, we return and fix it.

- Where
- Dorking (RH4, RH5)
- Region
- Surrey
- Cover
- A 12-month guarantee
- Quotes
- A fixed quote before we start
- Phone
- 01277 525 020
- Last updated
- 3 November 2026
Nearby places to Dorking
More services for Dorking
Keeping Dorking washrooms open while we work
A 2-mile radius around Dorking takes in several hotels. Behind every hotel door there’s a bathroom whose sealant will need renewing sooner or later. The work can go floor by floor, agreed with housekeeping. At about 21 miles from central London, Dorking is within reach of the capital. Washrooms in commuter-belt offices take constant weekday traffic, so we work a block of facilities at a time.
For a hall at a building such as Church of St Paul, resealing the kitchen and toilets can be fitted between bookings. Pupil toilets at schools like St Paul's CofE (Aided) Primary School take heavy daily use, and the holidays give the window to reseal.
Dorking is about 10 miles north-west of Crawley, in Surrey. We cover commercial sites throughout Dorking, whether it’s a single job or part of a planned programme. We work across 379 places in Surrey. We also cover London, around 21 miles from Dorking.
Work on washrooms and wet areas is covered throughout RH4 and RH5, for business premises of every kind. Streets here include High Street, Station Road and London Road. Dorking sits on or close to the A24 and A25. Nearby places we also cover include Pixham (1 mile north-east), North Holmwood (1 mile south), Westhumble (2 miles north), Westcott (2 miles west) and Blackbrook (2 miles south-east). A short drive away, we cover Guildford (11 miles west), Woking (12 miles north-west), Epsom (8 miles north), Horley (8 miles south-east), Redhill (7 miles east) and Ewell (9 miles north).
Near you in Dorking
Recent enquiries here include premises near The Wheatsheaf Public House, The Ashcombe School and Deepdene Terrace, among other places. Nearby too are The Ashcombe School (0.6 miles north) and Pippbrook House (0.5 miles north). Dorking’s nearest station is Dorking Deepdene station, about 0.6 miles north of the centre. Other landmarks nearby include Mesolithic Museum (3.9 miles south-west) and Headley Court (4.8 miles north-east). Green spaces nearby include Reigate Heath and Box Hill.
Do you need washroom sealing in Dorking?
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 tell you if another trade is needed.
Things that typically lead to an enquiry:
- Resealing that didn’t last because the old bead stayed
- Panel joints letting water behind
- Complaints from staff, guests or users about tired washrooms
- Kitchen worktop joints that can’t be kept clean
If you manage an office at a site such as Glebelands Centre Business Park, under half a mile to the west of Dorking, the washrooms and tea points can be done a floor at a time.
Before you book anyone
- How they’ll work around occupants
- Their public liability cover
- Their approach to joint depth and backing
- How they handle RAMS and site documents
How a job runs
Where the site stays busy, we agree a sequence with your contact so the disruption stays in one area at once. Each section is protected, cleaned back and sealed, then handed back before the next one starts. In a town such as Dorking, most jobs are single buildings. We start with your photographs, drawings or a site visit, then send a fixed quote.
- First, the phasing is agreed so facilities stay open.
- Anything behind the joints that needs another trade is flagged.
- Old sealant is stripped and the faces prepared.
- We reseal with the grade suited to each area.
- We give you a reopening time for every room.
Preparing the site
- Arrange parking or a loading space
- Point out any areas we must not close
- Warn occupants and staff about the work
Request a quote
We quote a fixed sum against the scope you give us, so the cost is agreed before work starts. To ask for one, give us a call on 01277 525 020 or email drawings and photos.
Related advice
What happens if it’s left?
A tired-looking washroom doesn’t always need a refurbishment. Where tiles, panels and fittings are sound, new sealant may be enough to put it right while bigger works are planned. A failed joint is easier to put right before damp shows inside. Once water gets in, there’s drying out and making good as well.
We don’t publish prices, because the scope varies so much from one building to the next. For a fixed figure, call for a quote.
What you get with us
- Over 20 years of commercial sealing
- A Constructionline member, so easy to vet
- RAL and finish matching where the product range allows
- Health and safety: CHAS accredited
Questions about Dorking
Do hotels near Dorking have to close for sealant work?
Rarely. Rooms or floors are done in turn, so the rest of the hotel keeps trading. Tell us your quiet periods and access windows and we will plan around them.
Would you work within a site like Dorking Community Hospital?
Yes, provided the work is planned with the site’s estates team. The estates team’s permit system and infection-control rules come first, and the work is planned around them.
What guarantee comes with washroom resealing?
A 12-month guarantee covers the work. It covers our workmanship rather than damage, leaks from plumbing or ventilation problems.
Is it possible to just clean mouldy silicone?
Surface cleaning won’t reach mould that has rooted into the bead. We replace the sealant with an anti-mould sanitary grade and check the ventilation isn’t the cause.
Do you hold CHAS accreditation?
Yes. We’re CHAS accredited and a Constructionline member, which helps with supplier vetting.
Are you insured?
Yes. Mastic Doctor is fully insured, public liability included.
Can you reseal washrooms in healthcare buildings?
Yes, healthcare and care settings are part of our work. Any records you need are confirmed with the quote before we start.
Honest limits
Before quoting, we check that sealant is the right answer. It isn’t the answer for:
- Leaks through tanking or membranes below the finishes
- Loose panels, vanity units or tiles, which need fixing first
- Water from plumbing, not from a joint
If you’re not sure, just call the office on 01277 525 020 or send details through our quote form and we will give you a straight answer.
Surfaces we seal
- Accessible toilets and changing rooms
- Urinals and WCs
- Showers, trays and wet room floors
- Vanity units and basins
- IPS panels and cubicles
- Kitchens and tea points
Maintenance after handover
Cleaning and maintenance staff play a part too. Pass these on to them:
- Include joints in routine washroom inspections
- Note failing joints building by building
- Report faulty extraction promptly
- Clear standing water from shower floors where possible
Ask your cleaning team to use gentle products and soft cloths on sealant. Aggressive descalers, solvents and scouring pads shorten its life over time.
A few failed joints can be resealed with hardly any disruption. Left until every washroom is affected, it becomes a bigger programme and more closures to manage.