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

Washroom Sealing contractors in Great Shefford

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

  • Complaints from staff, guests or users about tired washrooms
  • Panel joints letting water behind
  • Failed sealant behind washroom basins
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.
South East, London & Scotland
Constructionline member
Fully insured: £5m PL

Washroom sealing across Great Shefford

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 Great Shefford, done properly

When mould has spotted a silicone joint, more cleaning won’t remove it. The mould has rooted into the silicone itself, which is why it comes back however often it is treated. Only replacement gets rid of it for good. We work on urinals and WCs, kitchens and tea points and vanity units and basins, and the usual reasons a site gets in touch are open joints at the base of cubicle panels and black mould inside silicone joints that cleaning can’t shift. A single leaking joint is often how a building in Great Shefford first comes to us: we check the joints around it and give you an honest view of what needs doing now and what can wait.

Smaller places such as Great Shefford 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.

We stand behind the joints we seal with a 12-month guarantee. That covers our preparation and application.

Place
Great Shefford (RG17)
Region
West Berkshire
Guarantee
12 months on every job
Price
Fixed quote, scope in writing
Telephone
01277 525 020
Last updated
3 November 2026
The Mastic Doctor team standing beside their branded vans outside an office building

Doing it in-house

There’s also the paperwork. Main contractors and clients often ask for CSCS cards, RAMS and insurance details, and our CSCS-carded applicators are used to working under those rules.

What you see is the finished bead, but most of the work is hidden. Correct depth, the right primer and a sealant matched to the movement are easy to get wrong without experience.

Surface by surface

Kitchens and tea points

We plan kitchen sealing around when the kitchen is in use. Tell us your site hours and access windows and we’ll plan around them.

Changing rooms and gyms

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

Building owners, agents and FMs in Great Shefford

FMs need a contractor who is easy to get on site. Let us know the documents you need (RAMS, insurance certificate, CSCS details) and we will confirm them with the quote.

Hotels, schools, healthcare sites, offices and retail units book us directly too. We plan around the way the building is used, so guests, pupils, patients or staff are disturbed as little as possible.

Honest limits

We check first that sealant really is the fix. It won’t put right:

  • Water from plumbing, not from a joint
  • Hollow tiles or loose panels behind the joint
  • Vanity carcasses that have swollen

If in doubt, call the office on 01277 525 020 or send photos by email and we’ll say what we think before you book.

Joints and surfaces we work on

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

Commercial washrooms in Great Shefford

Great Shefford lies roughly 58 miles out from central London. Washrooms in commuter-belt offices take constant weekday traffic, so we work a block of facilities at a time.

Church halls and community buildings, such as those at Church of St Mary, have kitchens and toilets used by many groups, and their sanitary sealant works hard. Schools such as Shefford C.E. Primary School have toilets, changing rooms and kitchens that are best resealed in the holidays.

Great Shefford is about 8 miles north-west of Newbury, in West Berkshire. Any commercial site in Great Shefford is covered. Great Shefford is one of 140 places in West Berkshire on our list for washrooms and wet areas. Sites around Reading have their own page, roughly 20 miles from Great Shefford.

We take on washrooms and wet areas across the RG17 postcode area, whatever the building. If your site is on Station Road, The Mead and Miller's Field or close by, we can quote for washrooms and wet areas. Sites close to Great Shefford are covered too, including East Shefford (1 mile south-east), Weston (1 mile south-east), East Garston (2 miles north-west), Shefford Woodlands (2 miles south-west) and East Garston Woodlands (2 miles west). Nearby towns on our patch include Newbury (8 miles south-east), Thatcham (10 miles south-east), Speenhamland (7 miles south-east), Hungerford (5 miles south-west), Lambourn (4 miles north-west) and Shaw (7 miles south-east).

What’s near Great Shefford

For a walk, there’s Sole Common Pond.

Map of Great Shefford © OpenStreetMap contributors

FAQs: Great Shefford

Is Great Shefford too far out for you?

Not at all. Great Shefford is within our area. London and every South East county are within our area. Where we can, we group nearby jobs to make the most of each trip.

What paperwork can you provide for a job in Great Shefford?

We’ll confirm the paperwork you need, such as RAMS, our insurance certificate and CSCS details, with the quote. We hold £5m public liability insurance, are CHAS accredited and a Constructionline member, and our applicators are CSCS-carded.

Do you work in hospitals, clinics and care homes?

Yes, healthcare and care settings are part of our work. Any records you need are confirmed with the quote.

Will all the toilets be closed at once?

Only the area we are working in is closed. Each room reopens after the sealant’s cure time, then we move on.

Can you clean the mould off instead of resealing?

Typically 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?

The failed bead is always removed. New silicone won’t stick to the old so a bead over the top fails quickly.

What sealant do you use in washrooms?

Each area gets the grade that suits it. Washrooms and showers take anti-mould sanitary silicone while kitchens may need a food-safe grade.

What sets the cost

Quotes vary with the job. Expect it to depend on:

  • Which sealant the job calls for
  • Distance, for remote addresses
  • Whether old sealant has to be cut out first
  • Backing rod, priming and other preparation

Whether it’s a single area or a whole estate, the same things set the price: 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.

What to include in your enquiry

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

  • Asbestos survey details if the building is older
  • Where the site is, with the postcode
  • Anything awkward about access or site hours
  • Clear photographs of the problem areas

Photos, drawings or a schedule of the joints are often enough for a fixed quote. If the job needs a look first, we’ll arrange a site visit.

How a job runs

We follow your site rules from the start: signing in, inductions and any permit to work. With the paperwork done, we take the joints in the sequence agreed with you, and each area is checked before we leave it. If others near Great Shefford need work, visits can be combined, which keeps travel down. A fixed quote is given before anything starts.

  1. We start by inspecting the fittings and joints and flagging problems sealant can’t solve.
  2. We agree which rooms close and when, so users always have somewhere to go.
  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. Rooms reopen after the product’s cure time, and we move to the next.

Getting the site ready

  • Tell us which areas need to stay in use
  • Make sure the joints can be reached
  • Have the specification and drawings to hand

Quotes

For a fixed quote, give us a call on 01277 525 020 or send photos by email, telling us the site location and the nature of the job. Our quote form is another easy route.

Get a quick quote

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