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

Monkwood washroom sealing

Work needed on a washroom in Monkwood? We look at it, seal it with the right product and hand it over with a 12-month guarantee.

  • Users noticing mouldy joints
  • Sealant laid over old silicone and now peeling
  • Open joints along basins and vanity units
1
Send details
Drawings, photos, a joint schedule or a site visit.
2
Get a quote
A fixed quote for the work, with the scope in writing.
3
We seal
Failed joints cut out, faces prepared, new sealant laid.
4
Guaranteed
Our workmanship is guaranteed for 12 months.
London, the South East & Scotland
Constructionline member
Fully insured: £5m PL

Washroom sealing for businesses in Monkwood

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

General trades versus a specialist

Certain joints really need a specialist: fire-rated seals that must follow a tested detail, trafficked floor joints and external movement joints among them. Getting these wrong typically costs more in the end than doing them right.

For a quick touch-up, site staff may be fine, but larger jobs are different: a specialist brings efficiency, a consistent finish and a 12-month guarantee.

Washroom sealing in Monkwood, done properly

Facilities managers, contractors and building owners have used us for washroom sealing for over 20 years. Our applicators are CSCS-carded, and we are CHAS accredited and a Constructionline member. We are fully insured. Our workmanship is guaranteed for 12 months. We work on vanity units and basins, kitchens and tea points and urinals and WCs, and what we’re called in for most is sealant stained black around basins and showers and resealing that didn’t last because the old bead stayed. A specialist sealant contractor works differently from a general builder: in Monkwood, that means joint design, primers and backing rod as standard.

Farm shops, cafés and venues in converted rural buildings around places like Monkwood have busy toilets and kitchens. We plan the work around bookings and opening times.

The 12-month guarantee covers our workmanship: the preparation, the sealing and the tooling. Damage, later alterations by others and movement beyond what the joint was designed for sit outside it.

Location
Monkwood (SO24)
Region
Hampshire
Cover
12 months on every job
Quote
Fixed quote, scope in writing
Phone
01277 525 020
Page updated
3 November 2026
The Mastic Doctor team standing beside their branded vans outside an office building

When it isn’t the sealant

Our job is the joint, not everything around it. Sealant alone won’t deal with:

  • Hollow tiles or loose panels behind the joint
  • Panel boards already damaged by water
  • Water from plumbing, not from a joint

If in doubt, give us a call on 01277 525 020 or use the quote form and we will say what we think.

Where we work in Monkwood

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

Your questions answered

Is Monkwood off your patch?

No. Small places get the same service as large ones. London and every South East county are within our area. Where we can, we group nearby jobs to make the most of each trip.

Is hospital work, at somewhere like Alton Community Hospital, something you do?

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.

What guarantee comes with washroom resealing?

Our workmanship has a 12-month guarantee, and we carry public liability insurance.

Is old silicone taken out first?

We strip every bit of the failed bead and wipe away the residue first. That’s what makes the new joint last.

Are you fully insured?

Yes. We are fully insured, including public liability cover.

Do you phase washroom resealing?

Just the room being resealed is out of use. Each room reopens after the sealant’s cure time, then we move on.

When can showers be used after new sealant?

Each sealant has a cure time before it should get wet. We plan the phasing around that so there are always rooms open.

Sanitary sealant for Monkwood buildings

Monkwood lies roughly 51 miles out from central London, within the office belt around the capital. Office toilets in the commuter belt are in use from first arrivals to last departures, which is why the work is phased.

Where you’re responsible for a hall attached to a building such as Monkwood Mission Church, its kitchen and toilets need sealant that stays cleanable. Office washrooms on sites such as Mansfield Business Park, 3 miles north of Monkwood, are in use all working day, so resealing is phased to keep some open.

Monkwood is about 6 miles south-west of Alton, in Hampshire. Any commercial site in Monkwood is covered. Across Hampshire, 723 places are covered, Monkwood among them. Sites around Southampton have their own page, roughly 18 miles from Monkwood.

Anyone looking for washroom sealing in SO24 gets the same process as the rest of our area: details, then a fixed price, then sealing and a 12-month guarantee. If your site is on Hill Farm Road, Flint Fields and Soame's Lane or close by, we can quote for washrooms and wet areas. If your building is just outside Monkwood, we cover Charlwood (1 mile north-east), West Tisted (1 mile south-west), Gilbert Street (1 mile north-west), Kitwood (2 miles north) and Ropley (2 miles north-west). Bigger towns within reach include Basingstoke (14 miles north), Winchester (12 miles west), Havant (15 miles south), Eastleigh (15 miles south-west), Horndean (11 miles south) and Alton (6 miles north-east).

Local landmarks in Monkwood

Nearby you will also find Alton Community Hospital (5.5 miles north-east). The countryside around Monkwood includes Red Hill and Shutts Copse.

Map of Monkwood © OpenStreetMap contributors

What the job involves on each surface

Healthcare and care settings

Accessible and assisted washrooms are used and cleaned intensively, so their joints often need renewing sooner.

Wet-room floors and floor-to-wall joints

Sealant at a wet-room floor edge is not a substitute for the waterproofing underneath and point it out if water appears to rise from below.

What we are called out for in Monkwood

Much of the failed sealant we remove was applied over old silicone or residue. New silicone won’t grip the old, so it soon lets go.

What tends to prompt an enquiry:

  • Washrooms that look worn because of the sealant
  • Sealant stained black around basins and showers
  • Failed joints along IPS and cubicle panels
  • Discoloured joints around urinals and WC pans

On a healthcare site such as Alton Community Hospital, which lies north-east of Monkwood, washroom work starts with the infection-control team’s sign-off.

Before you book anyone

  • Their plan for phasing and protecting the area
  • Whether primer will be used where the manufacturer specifies it
  • Which product they’ll use, and why it suits the joint
  • What level of public liability insurance do they hold?

How to choose a sealant contractor

Aftercare for building managers

Your facilities or cleaning team can help the joints last. Pass these on to them:

  • Note failing joints building by building
  • Leave signs up until the cure time is over
  • Mention any site permits or estates rules at quote stage
  • Make sure washroom ventilation is running

Each room goes back into use only when the sealant has cured enough. You will be told when showers and basins can be used again and signage stays in place until that time.

Water getting behind IPS panels and vanity units can swell the boards. Once that happens, a reseal won’t fix them.

How a job runs

Before any cutting starts, the area is protected: tape along each joint edge and covers over finishes, stock and equipment close by. The work itself usually takes a few hours for one toilet block, with bigger buildings phased across a number of visits, and our waste is bagged and taken away as we go. Jobs in and around smaller places like Monkwood are typically planned as a single visit, so we ask for photographs and rough sizes first. Then the right materials arrive with us.

  1. We survey each room, count the joints and note anything behind them that needs another trade.
  2. We agree which rooms close and when, so users always have somewhere to go.
  3. Failed silicone is removed completely and the surfaces cleaned of every trace.
  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. You get a reopening time for every room, with signage left up until then.

Before we start on site

  • Point out any areas we must not close
  • Warn occupants and staff about the work
  • Send any specification or drawings in advance

Get a fixed quote

For a fixed quote, speak to us on 01277 525 020 or email the details over with the site address and an outline of the work. You can also send details through our quote form.

Get a price

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