The Mastic Doctor team standing beside their branded vans outside an office building
Isle of Wight · England

Washroom Sealing in Great Thorness

Sealing in commercial washrooms, showers, kitchens and wet areas across Great Thorness, by CSCS-carded applicators. CHAS accredited and fully insured.

  • Urinal joints that look unhygienic
  • Open joints along basins and vanity units
  • Shower tray joints that have opened up
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
CSCS-carded applicators, the right product for each joint.
4
Guaranteed
Backed by a 12-month workmanship guarantee.
Covering the South East & Scotland
Constructionline member
Fully insured: £5m PL

Washroom sealing for businesses in Great Thorness

Photos, a specification or a quick description of the joints is enough to start a fixed quote.

Washroom sealing in Great Thorness, done properly

When mould has spotted a silicone joint, more cleaning won’t remove it. The growth is inside the sealant, which is why it comes back however often it is treated. Replacing the bead is the lasting treatment. We work on accessible toilets and changing rooms, urinals and WCs and showers, trays and wet room floors, and the failures we are asked to look at most are failed sealant behind washroom basins and stained sealant around pans and urinals. One point of contact handles commercial sealant work in Great Thorness from the first photos to the final walk-round, for single jobs and planned programmes alike.

Halls and community buildings near places like Great Thorness are used by different groups through the week, and their toilets and kitchens show it. Resealing sinks, worktops and WCs with anti-mould silicone keeps them clean and watertight.

The 12-month guarantee covers our workmanship: the preparation, the sealing and the tooling. Damage, later alterations by others and movement beyond what the joint was designed for sit outside it.

Where
Great Thorness (PO31)
Region
Isle of Wight
Guarantee
12 months on every job
Quotes
Quoted before any work starts
Call
01277 525 020
Page updated
3 November 2026
The Mastic Doctor team beside their liveried vans in front of an office building

Site staff or a sealant specialist?

Using site staff can make sense for a small touch-up, but anything bigger is another matter: a specialist works through quantities efficiently, leaves a consistent finish and backs it with a 12-month guarantee.

Redoing a failed joint normally costs more than getting it right at the outset, since all of it has to come out and the faces be cleaned back again. For that reason, many FMs and contractors use a sealant specialist from the outset.

Do you need washroom sealing in Great Thorness?

Mop buckets, trolleys and knocks from users damage joints near the floor, especially at floor edges and around urinals and WC pans.

Things that typically lead to an enquiry:

  • Stained or open joints at kitchen sinks and worktops
  • Open joints at the base of cubicle panels
  • Mould spotting along silicone joints
  • Stained sealant around pans and urinals

At a hospital like Mr Rohan Sawant (St Mary’s Hospital) (2.8 miles south-east of Great Thorness), patient and staff washrooms are best done in short phases agreed with the ward.

Before you book anyone

  • Whether primer will be used where the manufacturer specifies it
  • Their pre-qualification and accreditations
  • What the guarantee covers, and for how long
  • Proof of insurance

Our contractor checklist

Different surfaces, different methods

Wet-room floors and floor-to-wall joints

Floor edges in wet areas are where water most often escapes. Floor perimeters and sealant joints near drains are resealed.

Urinals and WC pans

Floor joints around WC pans are often forgotten. We include them in the survey.

FAQs: Great Thorness

Is Great Thorness off your patch?

Not at all. Great Thorness is within our area. Our area covers London and the South East counties. Good photographs up front let us bring everything on the first visit.

Will the toilets in our Great Thorness building be out of use?

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.

Can you quote from photos?

It depends on the job. Simple work can often be priced from photos, and bigger or more complex jobs normally get a visit.

Do you need to remove the old sealant?

We always remove it. Fresh silicone can’t key to an old bead so a bead over the top fails quickly.

How do I request a quote?

There are four steps: send details, get a quote, we seal, guaranteed. Step one needs little more than photos and a postcode.

How soon can a washroom be used after resealing?

The silicone needs time to cure before water reaches it. We plan the phasing around that so there are always rooms open.

Will all the toilets be closed at once?

We phase it so there are always facilities open. We work through the building a room or section at a time. Tell us your site hours and access windows and we will plan around them.

Our process

On arrival, we report to your site contact and complete whatever induction the building runs. Everything around the joints gets protected before anything is cut or cleaned, and the work normally takes half a day to a day per washroom, depending on the number of fittings. Smaller jobs around Great Thorness can be grouped with others nearby, which keeps travel down. You’ll have a fixed quote before work starts.

  1. We inspect each washroom and record the joints to be resealed.
  2. The fixed quote sets out the rooms, the products and the phasing.
  3. Old sealant is removed completely and the faces cleaned.
  4. Each joint is cleaned and left dry.
  5. A sanitary silicone bead is laid and given a smooth tooled finish.
  6. Each area is handed back when ready.

Preparing the site

  • Tell us what induction or permit system the site runs
  • Tell us which areas need to stay in use
  • Clear stock, furniture or equipment away from the joints

Getting a fixed quote

Pricing a project or setting a maintenance budget? Send the scope and any drawings, and we’ll return a fixed quote that you can work with. For a chat about it beforehand, call 01277 525 020 or use the quote form.

Ask for a quote

Read more

Toilets, showers and kitchens around Great Thorness

Great Thorness sits close to the coast, within about 1 mile, and coastal hotels, guest houses and holiday sites tend to fill up in the busy months. Washrooms used guest after guest wear their sanitary silicone faster, so we plan the work for quieter weeks where possible.

For buildings on a site such as Porchfield Business Park, 1.7 miles to the south-west of Great Thorness, washrooms and tea points can be resealed in phases through the working week.

Great Thorness is about 3 miles south-west of Cowes, in the Isle of Wight. Anywhere in PO31, it works the same way: send details, get a fixed quote, we seal, and the work is guaranteed. 125 places across the Isle of Wight fall within our area, including Great Thorness. Sites around Southampton have their own page, roughly 13 miles from Great Thorness.

Postcode districts covered here: PO31. If your building is just outside Great Thorness, we cover Porchfield (1 mile south-west), Locksgreen (1 mile south-west), Rew Street (2 miles north-east), Newtown (2 miles south-west) and Northwood (2 miles north-east). Nearby towns on our patch include Newport (3 miles south-east), Ryde (9 miles east), Cowes (3 miles north-east), Sandown (10 miles south-east), Shanklin (10 miles south-east) and Ventnor (11 miles south-east). Where a site is remote or on an island, travel and materials need planning ahead, so the full address helps from the start.

Local landmarks in Great Thorness

We work on buildings around Sportsman's Rest pub. Nearby you will also find Carisbrooke Castle (3.5 miles south-east) and St Mary's Hospital (2.8 miles south-east). Open spaces near Great Thorness include Mill Hill.

Map of Great Thorness © OpenStreetMap contributors

What happens if it’s left?

Cleaning mouldy sealant only masks it but the growth is inside the bead and returns. A full reseal deals with it and your cleaning team stops chasing it. Converted and older buildings near places like Great Thorness tend to move, and aged sealant cracks. The right product, sized to the joint, copes much better.

The specified product makes a difference, and so does the preparation, such as cutting out, priming or new backing rod. Access, phasing and site rules also count.

Why appoint us

  • Fixed quotes based on photographs, drawings or a visit
  • Over 20 years of commercial sealing
  • Joints cleaned back to sound surfaces
  • 12 months’ guarantee on every job

Read what affects the cost and our accreditations and insurance.

Owners, agents and contractors

We take on planned maintenance as well as one-off repairs: resealing failed joints building by building, on a schedule that suits your budget. Sites in Great Thorness can sit alongside others in a wider programme.

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.

Accreditations

Trusted. Accredited. Insured.