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

Washroom Sealing in Gundleton

Washroom sealing in Gundleton, backed by over 20 years in commercial sealing. Fully insured, with a 12-month guarantee.

  • Discoloured joints around urinals and WC pans
  • Sealant stained black around basins and showers
  • Failed sealant behind washroom basins
1
Send details
Photos, drawings or a schedule, or we visit.
2
Get a quote
A fixed price, with what’s included set out clearly.
3
We seal
Prepared joints, the specified product, a tidy finish.
4
Guaranteed
Our workmanship is guaranteed for 12 months.
South East, London & Scotland
Constructionline member
£5m public liability

Need washroom sealing in Gundleton?

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

Washroom sealing in Gundleton

Whether it’s a single toilet block in Gundleton or a programme across several buildings, the route is the same: send details, get a fixed quote, we seal, guaranteed. Photos and a rough count of basins, urinals, showers and cubicles help us give a quick quote, or we can arrange a visit. If you have failed joints along IPS and cubicle panels and discoloured joints around urinals and WC pans, we can help, on kitchens and tea points, urinals and WCs and vanity units and basins alike. A specialist sealant contractor works differently from a general builder: in Gundleton, that means joint design, primers and backing rod as standard.

Community buildings around smaller places like Gundleton have kitchens and toilets used by many people. Fresh anti-mould sanitary silicone at sinks, worktops and toilets keeps them cleanable.

We stand behind the joints we seal with a 12-month guarantee. It covers how we prepared and applied the sealant.

Where
Gundleton (SO24)
Wider area
Hampshire
Cover
12 months on our workmanship
Quote
Quoted before any work starts
Call
01277 525 020
Last updated
3 November 2026
The Mastic Doctor team beside their liveried vans in front of an office building

Questions we’re asked in Gundleton

What paperwork can you provide for a job in Gundleton?

RAMS, insurance certificate, CSCS details: list what the site needs and we’ll confirm it with the quote. Our applicators are CSCS-carded, and we carry £5m public liability insurance.

Is Gundleton too small for you to travel to?

Not at all: smaller places are covered as well as towns. We cover Greater London and the counties of the South East. Good photographs up front let us bring everything on the first visit.

Will all the toilets be closed at once?

Only the area we are working in is closed. Rooms go back into use once the sealant has cured and we start the next.

Do you need to see the site first?

That depends on the size and complexity of the job. Simple work can often be priced from photographs, and bigger or more complex jobs normally get a visit.

Are your applicators CSCS-carded?

Yes. If you need card details for site access, let us know and we’ll send them with the quote.

How long will the new sealant last?

There isn’t a single answer, because life depends on how much the joint moves, how exposed it is and how it’s cleaned and used. Regular inspection is the best way to catch problems early.

What sealant do you use in washrooms?

An anti-mould sanitary silicone in most cases. Neutral-cure grades are used where acetoxy types could mark metals, stone or mirror backings.

How a job runs

When we get to site, we sign in, go through any site induction and check how permits are handled. Floors, finishes and fittings next to the joints are covered before anything is cut or cleaned, and the work normally takes a few hours for one toilet block, with bigger buildings phased across a number of visits. Smaller jobs around Gundleton can be grouped with others nearby. 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. The phasing is agreed so there are always facilities open.
  3. Failed silicone is removed completely and the surfaces cleaned of every trace.
  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.

Getting the site ready

  • Have the specification and drawings to hand
  • Share the asbestos register for older buildings
  • Clear stock, furniture or equipment away from the joints

Getting a fixed quote

Every quote starts with the facts: 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 quick quote

Advice

Leave it or put it right?

Bleaching black sealant may lighten it for a few days but the growth is inside the bead and returns. A full reseal deals with it and your cleaning team stops chasing it. For buildings around smaller places like Gundleton, water damage can go unnoticed for longer, especially where a building isn’t used daily, which gives a failed joint time to do damage. Resealing early avoids that.

A quote for washrooms and wet areas depends on quantities, condition and access, and any specification that applies. Ask us for a fixed quote.

What you get with us

  • Standard and matched colours in many product ranges
  • 12-month guarantee on workmanship
  • Fully insured
  • Colour agreed before work starts

Take a look at our cost guide or our accreditations and insurance.

Commercial washrooms in Gundleton

Gundleton lies roughly 52 miles out from central London. Office toilets in the commuter belt are in use from first arrivals to last departures, and resealing in phases keeps facilities available.

Office toilets at parks like Lower Soldridge Business Park (2.3 miles north-east of Gundleton) take steady weekday use, and mouldy silicone soon shows. For a hall at a building such as Church of All Saints, resealing the kitchen and toilets can be fitted between bookings. Pupil toilets at schools like Perins School take heavy daily use, and the holidays give the window to reseal.

Gundleton is about 7 miles south-west of Alton, in Hampshire. Businesses, contractors and managing agents in Gundleton use us for work on washrooms and wet areas. Gundleton is one of 723 places we cover in Hampshire for washrooms and wet areas. Our Southampton page has more on work in that area (17 miles or so).

Anyone looking for washroom sealing in SO24 gets the same process as the rest of our area: send details, get a quote, we seal, guaranteed. Among the streets we cover are Goscombs Lane and Bighton Lane, and sites on any of them can send details for a fixed quote. Just outside Gundleton, we also work in Bishop's Sutton (1 mile south-west), New Alresford (2 miles west), Bramdean (3 miles south), Hinton Ampner (4 miles south) and Cheriton (4 miles south-west). A short drive away, we cover Basingstoke (12 miles north), Winchester (9 miles west), Eastleigh (13 miles south-west), Horndean (14 miles south), Chandler's Ford (14 miles south-west) and Alton (7 miles north-east).

Local landmarks in Gundleton

Recent enquiries here include premises near Three Horseshoes Public House, among other places. Nearby you’ll also find Barton Castle (2.9 miles north). For a walk, there’s Shutts Copse and Red Hill.

Map of Gundleton © OpenStreetMap contributors

For managing agents and facilities managers

Building owners and managing agents use us on sealant work across single buildings or whole portfolios. One quote can cover more than one site, so there’s one set of paperwork to deal with.

Planned maintenance programmes are welcome: working through a building or an estate in stages that fit your budget. Sites in Gundleton can sit alongside others in a wider programme.

What the job involves on each surface

Urinals and WC pans

We reseal around urinals and pans with a sanitary grade once the whole of the old bead has gone.

Kitchens and tea points

Worktop, sink and splashback joints in tea points take water and food. Sound joints keep those surfaces easy to clean.

What affects the price in Gundleton

Sealant work doesn’t have a standard rate, because every site is different. What we take into account:

  • Induction, permit and paperwork requirements
  • Removal of failed or old sealant
  • Quantities, in metres or numbers
  • Working within restricted access windows

Access can matter as much as the joints themselves: easy-to-reach joints are quicker than those that need equipment to get to. Mention the access as part of your enquiry.

Sending details for a quote

We can often quote from photographs and a few details. Please tell us:

  • Clear photos of the problem areas
  • Approximate linear metres or a joint schedule
  • The type of building and who uses it
  • Whether an asbestos survey exists

Pricing a project or setting a maintenance budget? We will quote against your scope and drawings that you can work with. For a chat about it beforehand, phone 01277 525 020 or send details through our quote form.

When something else is needed

Sealant solves a lot, but not everything, and we’d rather tell you before you spend money. It won’t fix:

  • A dripping waste or valve behind a panel
  • Fittings that move too much to hold a bead
  • A room that stays damp because ventilation isn’t working

Not sure which it is? You can ring 01277 525 020 or send details through our quote form and we will tell you honestly.

Surfaces we seal

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

Trusted. Accredited. Insured.