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

Boxford washroom sealing

Sealing in commercial washrooms, showers, kitchens and wet areas in Boxford and across West Berkshire. CHAS accredited, Constructionline member, with a 12-month guarantee on workmanship.

  • Sealant laid over old silicone and now peeling
  • Black mould inside silicone joints that cleaning can’t shift
  • Failed sealant in a tea point or staff kitchen
1
Send details
Photos, drawings or a schedule, or we visit.
2
Get a quote
Scope agreed and priced before anything starts.
3
We seal
Failed joints cut out, faces prepared, new sealant laid.
4
Guaranteed
12-month guarantee on our workmanship.
London, the South East & Scotland
CHAS accredited
£5m public liability

Need washroom sealing in Boxford?

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 Boxford

When mould has spotted a silicone joint, more cleaning won’t remove it. The growth is inside the sealant so it returns whatever the cleaning regime. Only replacement gets rid of it for good. If you have stained sealant around pans and urinals and failed joints along IPS and cubicle panels, we can help, whatever the surface. Searching for sealant specialists in Boxford? Mastic Doctor has worked for contractors, FMs and building owners since 2005.

Smaller places such as Boxford still have commercial washrooms and kitchens: in halls, pubs, schools, care homes and farm-based businesses. Sealant that has gone black with mould usually can’t be cleaned, so it is cut out and replaced.

The 12-month guarantee is for workmanship rather than wear and tear. How long a sealant joint lasts depends on movement, exposure, cleaning and use, so we are clear about what is covered before work starts.

The Mastic Doctor team standing beside their branded vans outside an office building
Where
Boxford (RG20)
Region
West Berkshire
Guarantee
12 months on every job
Price
Quoted before any work starts
Telephone
01277 525 020
Page updated
3 November 2026

Honest limits

A proper diagnosis includes knowing what sealant can’t do. We will tell you if the real problem is one of these:

  • Swollen or delaminated boards behind panels or vanity tops
  • Fittings that move too much to hold a bead
  • Leaks through tanking or membranes below the finishes

Not sure which it is? You can phone 01277 525 020 or use the quote form and we will tell you honestly.

What we seal

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

Work for main contractors and building owners

When you manage a building on behalf of an owner, you need clear quotes and clear reporting. We quote a fixed sum, confirm the scope and walk the finished work with you or your representative, plus a 12-month guarantee.

Whether you’re a managing agent, a property factor or an owner’s representative: send details, get a fixed quote, we seal, guaranteed. Keys, access and contacts can be agreed in advance.

What the job involves on each surface

Changing rooms and gyms

Shower areas, wet floor edges and vanity areas all have sealant joints and we look at them as one job.

Healthcare and care settings

Assisted bathrooms and accessible toilets get heavy use, so their joints often need renewing sooner.

Why deal with it now?

Cleaning mouldy sealant only masks it but the growth is inside the bead and returns. A full reseal deals with it and cleaners stop fighting a losing battle. One visit to deal with every failing joint makes more sense than several trips to a place like Boxford. Send photos of each area and we will quote for the lot.

The price depends on how many linear metres there are, what has to come out first and how the joints are reached. Call for a fixed quote once you have the details.

Why appoint us

  • A Constructionline member, so easy to vet
  • Fully insured
  • Workmanship guaranteed for 12 months
  • Colours confirmed for the specified product

Take a look at our cost guide or our accreditations.

Busy facilities in and around Boxford

Central London is about 56 miles from Boxford. Office washrooms on business parks see heavy weekday use, so we phase work to keep some facilities open.

For a hall at a building such as Parish Church of St Andrew, resealing the kitchen and toilets can be fitted between bookings. On a healthcare site such as West Berkshire Community Hospital (4.6 miles south-east of Boxford), washroom work starts with the infection-control team’s sign-off.

Boxford is about 4 miles north-west of Newbury, in West Berkshire. Businesses, contractors and managing agents in Boxford can call on us for washrooms and wet areas, as part of our coverage of West Berkshire. Across West Berkshire, 140 places are covered, Boxford among them. Our Reading page has more on work in that area, about 17 miles away.

Commercial sites across RG20 are covered. If your site is on School Lane and Winterbourne Road or close by, we can quote for washrooms and wet areas. Just outside Boxford, we also work in Wickham Heath (1 mile south-west), Winterbourne (2 miles east), Stockcross (2 miles south), Bagnor (3 miles south-east) and North Heath (3 miles north-east). Bigger towns within reach include Newbury (4 miles south-east), Thatcham (6 miles south-east), Burghfield Common (14 miles east), Speenhamland (3 miles south-east), Hungerford (6 miles west) and Fords Farm (15 miles east).

Landmarks near Boxford

Locally, jobs take us to sites close to The Bell pub. Boxford’s nearest station is Kintbury station, about 3.9 miles south-west of the centre. Well-known places in the area include British Balloon Museum & Library Ltd (3.8 miles south-east) and West Berkshire Community Hospital (4.6 miles south-east). Not far away are Sole Common Pond.

Map of Boxford © OpenStreetMap contributors

Looking after the joints

Regular inspection catches problems early. Specifically:

  • Share your site rules when you send details
  • Clean sealant with gentle products and a soft cloth
  • Report split joints at trays and basins early
  • Add sealant joints to planned maintenance checks

Keep extract fans working and vents clear. Constant damp lets mould take hold even on anti-mould grades so report fans that aren’t working to your building services team.

Leaks through tray and wet-floor joints can go unseen until a ceiling marks below. By then, other trades may be needed as well, so reseal when you first spot a split.

How a job runs

Before any cutting starts, the area is protected: masking tape along the joint edges and sheeting over anything nearby. The work itself normally takes between a morning and a week or so, set by the number of rooms and the phasing you need, and we clear our waste as we work. For work around Boxford, we aim to finish in one visit, so photographs and measurements up front really help. That way the right products come on the day.

  1. Every washroom is checked joint by joint, with loose panels, leaks or damp noted for the right trade.
  2. The phasing is agreed so there are always facilities open.
  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.

Before we start on site

  • Let building users know which areas are affected
  • Make sure the joints can be reached
  • Confirm the product named in the specification

Getting a fixed quote

Pricing a project or setting a maintenance budget? We will quote against your scope and drawings you can plan around. If you have questions first, speak to us on 01277 525 020 or email a schedule or drawings.

Get a price

Read more

Questions we’re asked in Boxford

Is a hospital such as West Berkshire Community Hospital somewhere you can work?

Yes. We work in healthcare settings as well as offices and schools. The estates team’s permit system and infection-control rules come first, and the work is planned around them.

Is a smaller place like Boxford outside your area?

No. Small places get the same service as large ones. We cover Greater London and the counties of the South East. Where we can, we group nearby jobs to make the most of each trip.

Can you clean the mould off instead of resealing?

Cleaning may lighten it, but the mould returns. New anti-mould sanitary silicone is the treatment and check the ventilation isn’t the cause.

What sealant do you use in washrooms?

Each area gets the grade that suits it. Washrooms and showers take anti-mould sanitary silicone, and food areas take a hygienic, food-safe sealant where food contact is possible.

Is old silicone taken out first?

The whole of the old bead is removed and the surfaces cleaned before resealing. It’s the difference between a joint that lasts and one that peels.

Do you guarantee washroom sealing?

Every job carries our 12-month guarantee. It applies to our workmanship, not to plumbing leaks or damp from poor ventilation.

Which sealant will you use?

Where there’s a specification, we use the product it names. If not, we choose for the movement, the surfaces and the conditions, in line with the manufacturer’s guidance.

Accreditations

Trusted. Accredited. Insured.