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

Washroom Sealing contractors in Boxted

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

  • Black mould inside silicone joints that cleaning can’t shift
  • Washrooms that look worn because of the sealant
  • Stained sealant around pans and urinals
1
Send details
Tell us about the site, with photos if you have them.
2
Get a quote
A fixed quote for the work, with the scope in writing.
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
Constructionline member
Fully insured: £5m PL

Need washroom sealing in Boxted?

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

Site staff or a sealant specialist?

There’s also the paperwork. Many sites expect CSCS cards, RAMS and proof of insurance, and we will confirm the paperwork you need with the quote.

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

About our washroom sealing in Boxted

Since 2005 we have resealed commercial washrooms for facilities teams, contractors and building owners. Our applicators are CSCS-carded, and we are CHAS accredited and a Constructionline member. We are fully insured. Every resealed washroom carries our 12-month guarantee. The enquiries we see most involve failed sealant behind washroom basins and failed joints along IPS and cubicle panels, across IPS panels and cubicles, kitchens and tea points and accessible toilets and changing rooms. Facilities teams, main contractors and managing agents in Boxted tend to want the same three things: a fixed quote, no surprises on site and a 12-month guarantee behind the result.

Smaller places such as Boxted still have commercial washrooms and kitchens: in halls, pubs, schools, care homes and farm-based businesses. Mould gets into sealant in any washroom that doesn’t dry out, and once it’s in, the sealant is replaced.

A 12-month guarantee applies to all our work. If an installation problem shows up, call 01277 525 020 or email a schedule or drawings and we will arrange a return visit.

Location
Boxted (CO4)
Region
Essex
Guarantee
12 months on every job
Quotes
A fixed quote before we start
Phone
01277 525 020
Page updated
3 November 2026
The Mastic Doctor team standing beside their branded vans outside an office building

How a job runs

Inspect, seal, sign off: every visit follows that pattern. We inspect the joints and confirm what’s in scope, then the work is carried out to the specified product and detail, and the job ends with a walk round and sign-off. Smaller jobs around Boxted can be grouped with others nearby, which keeps travel down. You will have a fixed quote before work starts.

  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. The failed silicone is stripped and every face scraped clean of residue.
  4. Joints are cleaned, degreased and dried before sealing.
  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.

Getting the site ready

  • Let building users know which areas are affected
  • Point out any areas we must not close
  • Send your site hours and access windows

Get a fixed quote

Photos, drawings or a schedule of the joints and a fixed quote comes back to you. If the job needs a look first, we will arrange a site visit.

Get a price

Read more

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

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

What we can’t put right

Our job is the joint, not everything around it. On its own, sealant can’t deal with:

  • Fittings that move too much to hold a bead
  • Failed tanking beneath a wet-room floor or behind tiles
  • Swollen or delaminated boards behind panels or vanity tops

If in doubt, speak to us on 01277 525 020 or email the details over and we will say what we think before you book.

Joints and surfaces we work on

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

What affects the price in Boxted

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

  • Specialist products, such as fire-rated or hygienic sealants
  • Backing rod, priming and other preparation
  • Travel to remote or island sites
  • Access and working height

No two sites price the same: the joint sizes, the specified product, access and working hours each have a bearing. A fixed quote follows once we understand the job.

Sending details for a quote

The more we know, the firmer the quote. When you get in touch, include:

  • The asbestos register, for older buildings
  • The site address and postcode
  • A wide shot and a close-up of the area
  • Any dates the work must fit around

Specifications, drawings and tender packages are welcome with any enquiry, and we’ll price against exactly what is specified. Smaller jobs need nothing more than photos and a few notes.

Building owners, agents and FMs in Boxted

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.

CHAS accredited and a Constructionline member, we are straightforward to vet for your supplier list. We’re fully insured, and our insurance certificate can go with the quote.

Sanitary sealant for Boxted buildings

At about 53 miles from central London, Boxted is within reach of the capital. Office washrooms on business parks see heavy weekday use, so we phase work to keep some facilities open.

At a school such as Boxted St Peter's Church of England School, changing rooms and kitchens need cleanable joints as much as the toilets. For a site such as Cygnet Hospital Colchester, 2.1 miles to the south of Boxted, sanitary joints in clinical areas need sound, cleanable sealant and a careful method. For a hall at a building such as Church of St Peter, resealing the kitchen and toilets can be fitted between bookings.

Boxted is about 4 miles north of Colchester, in Essex. We cover commercial sites throughout Boxted, whether it’s a single job or part of a planned programme. Across Essex, 644 places are covered, Boxted among them. Sites around London have their own page, about 53 miles away.

Commercial sites across CO4 are covered for washrooms and wet areas. Streets here include Church Road, Boxted Straight Road and Windmill Close. Sites close to Boxted are covered too, including Workhouse Hill (1 mile west), Boxted Cross (1 mile north-east), Langham (1 mile east), Hornestreet (1 mile east) and Thorington Street (2 miles north). Further afield, our area takes in Colchester (4 miles south), Clacton-on-Sea (15 miles south-east), Harwich (15 miles east), Camulodunum (5 miles south), Halstead (12 miles west) and Greenstead (4 miles south).

Local landmarks in Boxted

Boxted’s nearest station is Colchester station, about 3.6 miles south of the centre. A little further out are Severalls Hospital (2.4 miles south) and Colchester Castle (4.2 miles south). Open spaces near Boxted include Westhouse Wood.

Map of Boxted © OpenStreetMap contributors

Common questions from Boxted clients

Will the toilets in our Boxted building be out of use?

Not all at once. We take one block of facilities at a time. We’ll tell you the curing time for the product before we start.

Is Boxted too far out for you?

No. Places such as Boxted are covered as much as the big towns. We work across Greater London and the South East. Send photographs and a list of what needs doing, and we’ll plan the job to need as few trips as possible.

Is it OK to put new silicone on top of the old?

The failed bead is always removed. Fresh silicone can’t key to an old bead, so sealing over it soon peels.

What site paperwork can you supply?

Each site asks for different documents, so list what you need, whether RAMS, insurance or CSCS details, and we’ll confirm with the quote.

How do I request a quote?

The quote form is the simplest route, though you can also call 01277 525 020 or email a schedule or drawings. Include photos or drawings if you have them.

Can weather delay the job?

Outside, yes. Sealant needs a dry joint and a temperature within the product’s range, so damp, frosty or very cold days can stop external work. Internal work is rarely affected.

Can you work to our specification?

Yes. Include it with the drawings when you ask for a quote, and the quote will be based on it.

Accreditations

Trusted. Accredited. Insured.