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

Washroom Sealing in Grateley

Commercial sealant work in Grateley for contractors, FMs and building owners: sealing in commercial washrooms, showers, kitchens and wet areas, quoted at a fixed price.

  • Black mould inside silicone joints that cleaning can’t shift
  • Panel joints letting water behind
  • Failed sealant behind washroom basins
1
Send details
Tell us about the site, with photos if you have them.
2
Get a quote
Scope agreed and priced before anything starts.
3
We seal
The right sealant, to the right depth, neatly finished.
4
Guaranteed
Signed off, with 12 months’ guarantee.
South East, London & Scotland
Constructionline member
£5m public liability

Washroom sealing across Grateley

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

How we handle washroom sealing in Grateley

Closing all the facilities in a building isn’t an option. Work is phased by room or by section, so there are always facilities in use. Give us your site hours and access windows and the phasing is planned around them. We work on IPS panels and cubicles, accessible toilets and changing rooms and vanity units and basins, and what we are called in for most is open joints at the base of cubicle panels and black mould inside silicone joints that cleaning can’t shift. For commercial sealant work in Grateley, you deal with one contact from quote to sign-off, for single jobs and planned programmes alike.

Rural businesses near smaller places such as Grateley, from cafés to event venues, rely on washrooms and kitchens that stay clean. We plan the work around bookings and opening times.

Guaranteed is the last step of every job. Our workmanship is backed for 12 months, and the quote explains what it covers.

Mastic Doctor team members lined up next to their branded vans outside an office building
Where
Grateley (SP11)
Wider area
Hampshire
Cover
12 months on our workmanship
Quotes
Quoted before any work starts
Telephone
01277 525 020
Page updated
3 November 2026

What sealant work can’t fix

Sealant solves a lot, but not everything, and we’d rather tell you before you spend money. These need a different solution:

  • Water escaping beneath the floor rather than through a joint
  • Panel boards already damaged by water
  • Fittings that move too much to hold a bead

If you are not sure, just call 01277 525 020 or email a schedule or drawings and we will give you a straight answer.

Surfaces we seal

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

Maintenance after handover

After handover, a little attention goes a long way:

  • Report faulty extraction promptly
  • Report split joints at trays and basins early
  • Clear standing water from shower floors where possible
  • Mention any site permits or estates rules at quote stage

If a joint we sealed fails within 12 months, tell us and we’ll look at it. Beyond that, regular checks keep small problems small.

Inspectors look at whether kitchen surfaces can be kept clean. Resealing sinks, worktops and splashbacks before an inspection is a simple step.

When to bring in a specialist

Site maintenance staff can often handle a short internal joint. Where it goes wrong is preparation: sealing over old material, sealing onto damp or dusty surfaces, or a product that can’t take the movement.

General builders and handymen seal joints, but it isn’t their main trade. A specialist brings correct preparation, depth control with backing rod and a product suited to that particular joint, which is what makes a joint last.

Diagnose, treat, sign off

We bring the products specified for the job, along with primers and backing rod. Any old material is cut back to clean, sound faces, the manufacturer’s primer is applied where it’s called for, and each bead is tooled to a neat concave finish. For work around Grateley, we aim to finish in one visit, so photos and measurements up front really help. That way the right products come on the day.

  1. We agree which washrooms close and when.
  2. Leaks, loose panels or damp are pointed out first.
  3. Old sealant is stripped and the faces prepared.
  4. The right sanitary or food-safe sealant is applied.
  5. We give you a reopening time for every room.

Preparing the site

  • Agree which areas must stay open
  • Send any specification or drawings in advance
  • Share the asbestos register for older buildings

Getting a fixed quote

A good quote starts with a clear picture: the joints involved, quantities, access and the product called for. Send what you have, and we will arrange a site visit if anything is unclear.

Get a price

Read more

Common problems we fix in Grateley

A lot of failed washroom sealant was laid over an old bead or a dirty surface. Silicone won’t adhere to a silicone bead, so it soon lets go.

Clients usually get in touch after noticing one or more of the following:

  • Resealing that didn’t last because the old bead stayed
  • Kitchen worktop joints that can’t be kept clean
  • Washrooms that look worn because of the sealant
  • Shower tray joints that have opened up

For a site such as Andover War Memorial Hospital, 5.4 miles to the north-east of Grateley, sanitary joints in clinical areas need sound, cleanable sealant and a careful method.

What your quote should include

  • Whether primer will be used where the manufacturer specifies it
  • Is depth set with backing rod, or bond-breaker tape in shallow joints?
  • The named product and why it was chosen
  • Their plan for phasing and protecting the area

Our contractor checklist

Keeping Grateley washrooms open while we work

Grateley lies roughly 69 miles out from central London, in a commuter belt where offices and business parks are common. Business park offices have washrooms in daily use by staff, and resealing in phases keeps facilities available.

Church halls and community buildings, such as those at Church of St Leonard, have kitchens and toilets used by many groups, and their sanitary sealant works hard. At a school such as Grateley Primary School, changing rooms and kitchens need cleanable joints as much as the toilets.

Grateley is about 6 miles south-west of Andover, in Hampshire. Anywhere in SP11, it works the same way: details in, fixed quote out, then sealing and a 12-month guarantee. Grateley is one of 723 places in Hampshire on our list for washrooms and wet areas. For work in that direction, see our Southampton page (20 miles or so).

If you need washroom sealing in SP11, the process matches everywhere else we work: send details, get a quote, we seal, guaranteed. We cover commercial and managed buildings on High Street, Station Road and Hawthorne Close and the roads nearby. If your building is just outside Grateley, we cover Palestine (1 mile south-west), Quarley (1 mile north), Fox (1 mile north-east), Amport (2 miles north-east) and Kentsboro (2 miles south-east). A short drive away, we cover Winchester (15 miles south-east), Andover (6 miles north-east), Romsey (14 miles south-east), Hyde (15 miles south-east), Tidworth (5 miles north-west) and Weeke (14 miles south-east).

What’s near Grateley

Around Grateley, our work takes us to commercial buildings near The Plough Inn and the streets around them. Grateley’s nearest station is Grateley station, about 0.9 miles south-west of the centre. Other landmarks nearby include Andover War Memorial Hospital (5.4 miles north-east). Not far away are Winterbourne Downs RSPB reserve and Quarley Hill.

Map of Grateley © OpenStreetMap contributors

FAQs: Grateley

Would you work within a site like Andover War Memorial Hospital?

Yes. We work in healthcare settings as well as offices and schools. Each area is agreed with the ward or department and the estates team in advance.

Will all the washrooms in our Grateley building be closed at once?

Rarely all at once: work is phased so some facilities are always available. Sanitary silicone needs time to cure before the area is used, and we’ll tell you how long for the product used.

Is colour matching possible?

It depends on the product. Some ranges are wide, others limited, so the available colours are confirmed with the quote.

Which silicone is right for commercial washrooms?

Sanitary silicone with anti-mould additives in the majority of cases. We use neutral-cure versions on stone, some metals and near mirrors.

Do you need to see the site first?

It depends on the job. Straightforward work can often be priced from photographs and measurements, while larger or less clear jobs get a site visit first.

Can you clean the mould off instead of resealing?

Not for long. The mould is inside the silicone, so it comes back however often it’s cleaned. Replacing the bead is the lasting answer.

Can one quote cover more than one building?

Yes. Several buildings can share a single quote, with one point of contact.

What affects the price in Grateley

We price every job individually. The main factors are:

  • The total length or number of joints
  • Site requirements such as inductions and permits
  • Access and working height
  • Whether the work must be split into stages

Larger quantities, tricky access or phasing all shape the price. So do site requirements such as inductions and permits.

What we need to price the job

The more we know, the firmer the quote. Helpful details to send:

  • A wide shot and a close-up of the area
  • Rough lengths or quantities, or drawings if you have them
  • Any dates the work must fit around
  • Where the site is, with the postcode

Quotes are fixed against the scope you send, so you know the figure before anyone is on site. To start the process, give us a call on 01277 525 020 or use the quote form.

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