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

Washroom Sealing contractors in Horndean

We carry out sealing in commercial washrooms, showers, kitchens and wet areas in Horndean and the surrounding area. Send photos or drawings for a fixed quote.

  • Washrooms that look worn because of the sealant
  • Black mould inside silicone joints that cleaning can’t shift
  • Kitchen worktop joints that can’t be kept clean
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
CSCS-carded applicators, the right product for each joint.
4
Guaranteed
Our workmanship is guaranteed for 12 months.
South East, London & Scotland
CHAS accredited
£5m public liability

Washroom sealing across Horndean

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

Washroom sealing in Horndean, done properly

In a busy washroom, the sealant typically gives up long before the tiles or fittings. Basin tops, urinal backs, panel joints and shower trays put it under water, chemicals and daily cleaning, and once mould grows into it, it can’t be scrubbed out. We strip it out and lay new anti-mould sanitary silicone. We work on urinals and WCs, vanity units and basins and IPS panels and cubicles, and what we’re called in for most is panel joints letting water behind and urinal joints that look unhygienic. Looking for mastic applicators who cover Horndean? We’ve been sealing commercial buildings since 2005, with CSCS-carded applicators.

In a town such as Horndean, commercial washrooms are in schools, care homes, surgeries, gyms, offices and pubs. Anti-mould sanitary silicone, laid on clean, dry joints, keeps them looking cared for and easy to clean.

We stand behind the joints we seal: 12 months, guaranteed. That covers our preparation and application, and if something we did falls short, we return to it.

The Mastic Doctor team standing beside their branded vans outside an office building
Place
Horndean (PO8, PO7)
Region
Hampshire
Guarantee
12 months on every job
Quotes
Quoted before any work starts
Telephone
01277 525 020
Last updated
3 November 2026

Commercial washrooms in Horndean

There are three care or nursing homes within about 2 miles of Horndean. In a care setting, a mouldy or lifting joint in a wet room is a hygiene issue as much as a cosmetic one. Work is agreed with the manager, around residents’ routines. At about 57 miles from central London, Horndean is within reach of the capital, in a commuter belt where offices and business parks are common. Business park offices have washrooms in daily use by staff, which is why the work is phased.

For a school such as Horndean Technology College, washroom and kitchen sealant can be renewed around term dates. Welfare facilities in units on estates such as Westfield Industrial Estate, 0.7 miles north-east of Horndean, have showers, toilets and kitchens with sealant that works hard.

Horndean is about 7 miles north-east of Portsmouth, in Hampshire. Any commercial site in Horndean is covered, whether it’s a single job or part of a planned programme. Across Hampshire, 723 places are covered, including Horndean. For work in that direction, see our Portsmouth page, about 7 miles away.

Business premises anywhere in PO8 and PO7 are within our area for washrooms and wet areas. Among the streets we cover are London Road, Kings Mede and Causeway Farm, and sites on any of them can send details for a fixed quote. You’ll find Horndean on or near the A3 and A3(M). If your building is just outside Horndean, we cover Lovedean (1 mile west), Wecock Farm (1 mile south-west), Catherington (2 miles north), Anmore (2 miles west) and Denmead (2 miles west). Further afield, our area takes in Gosport (9 miles south-west), Havant (3 miles south), Eastleigh (15 miles west), Fareham (9 miles south-west), Hedge End (13 miles west) and Petersfield (7 miles north-east). Horndean ranks among the main centres of Hampshire, with offices, shops, schools and other public and commercial buildings.

Landmarks near Horndean

We work on buildings around Horndean Infant School and Red Lion Inn and the streets around them. The closest station to Horndean is Rowlands Castle station, roughly 2.6 miles south-east of the centre. A little further out are Havant War Memorial Hospital (3.8 miles south) and Clanfield Earthwork (3 miles north-east). Not far away are Windmill Hill and Southmoor Nature Reserve.

Map of Horndean © OpenStreetMap contributors

For managing agents and facilities managers

If you look after buildings for someone else, clear figures and clear communication matter. We quote a fixed sum, confirm the scope and walk the finished work with you or your representative, plus a 12-month guarantee.

Hotels, schools, healthcare sites, offices and retail units book us directly too. The work is planned around how the building runs, so the building keeps working while we do.

What sets the cost

A fixed quote reflects the actual work. It allows for:

  • Joint width, depth and condition
  • Whether the work must be split into stages
  • Whether old sealant has to be cut out first
  • Location, for remote and island sites

No two sites price the same: the joint sizes, the specified product, access and working hours each have a bearing. Send the details and a fixed figure follows.

What to include in your enquiry

There’s no need for a formal survey. A few details are enough to get going:

  • The asbestos register, for older buildings
  • Access details, including height
  • Approximate linear metres or a joint schedule
  • Any dates the work must fit around

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

What we are called out for in Horndean

Low-level joints get hit by mop buckets, cleaning trolleys and feet, especially at floor edges and around urinals and WC pans.

Typical triggers for a call:

  • Users noticing mouldy joints
  • Shower tray joints that have opened up
  • Failed joints along IPS and cubicle panels
  • Urinal joints that look unhygienic

Where you’re responsible for a hall attached to a building such as Saint Wilfrid's, its kitchen and toilets need sealant that stays cleanable.

Before you book anyone

  • How long is the guarantee, and what does it include?
  • How the existing material will be dealt with
  • Their pre-qualification and accreditations
  • Their public liability cover

Our contractor checklist

From enquiry to sign-off

Before any cutting starts, the area is protected: tape along each joint edge and covers over finishes, stock and equipment close by. On site, the work usually takes half a day to a day per washroom, depending on the number of fittings, and our waste is bagged and taken away as we go. For a town like Horndean, we try to group jobs for the same client into one visit. Give us your access times and we’ll fit the work in.

  1. We start by inspecting the fittings and joints and flagging problems sealant can’t solve.
  2. The phasing is agreed so there are always facilities open.
  3. The failed silicone is stripped and every face scraped clean of residue.
  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.

What we need from you

  • Tell us what induction or permit system the site runs
  • Send any specification or drawings in advance
  • Point out any areas we must not close

Quotes

Let us know the site, the scope and your timescale, and a fixed quote will follow. To get it moving, give us a call on 01277 525 020 or email us.

Ask for a quote

Read more

Questions we’re asked in Horndean

Do you work in occupied care homes around Horndean?

Yes. Care settings are planned area by area, at times agreed with the home. Tell us about any infection-control or safeguarding requirements and we’ll work to them.

Can you work on a hospital site such as Havant War Memorial Hospital?

Yes. Healthcare sites are among the places we work. Work is phased so departments keep running, under the site’s own rules.

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.

Can you clean the mould off instead of resealing?

Usually not. Mould grows into the sealant itself so cleaning only lightens it for a while. Replacing the bead is the lasting answer.

Do you need to remove the old sealant?

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

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.

Will you come and look before quoting?

That depends on the size and complexity of the job. Simple work can often be priced from photographs, and bigger or more complex jobs normally get a visit.

Why deal with it now?

Sealing on top of old silicone saves nothing. Silicone won’t grip silicone, so it lifts and holds moisture underneath. Cutting out completely and cleaning back takes a little longer and lasts. In a town like Horndean, a split, stained or mouldy joint is often the first thing visitors notice. Renewing it keeps the building looking cared for.

Small jobs and large programmes are priced from the same things: what’s in scope, how we reach it, what’s specified and when it needs doing. Call for a quote, and you’ll have a fixed figure to work with.

Why us?

  • Colour options checked against the specified product
  • Failed material removed, not covered up
  • Standard and matched colours in many product ranges
  • CHAS accredited

See how commercial sealant jobs are priced or our accreditations and insurance.

General trades versus a specialist

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.

Putting right a botched joint often costs more than sealing it well at the start, because the whole bead must be removed and the faces cleaned back again. That’s why many clients bring in a specialist from the beginning.

Accreditations

Trusted. Accredited. Insured.