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

Commercial washroom and wet-area sealing in Nether Wallop, Hampshire

Washroom sealing for Nether Wallop, from a contractor working since 2005. Fully insured, with a 12-month guarantee.

  • Failed sealant behind washroom basins
  • Washrooms that look worn because of the sealant
  • Panel joints letting water behind
1
Send details
Send the specification, photos or a marked-up plan.
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
Backed by a 12-month workmanship guarantee.
South East, London & Scotland
CHAS accredited
£5m public liability

Need washroom sealing in Nether Wallop?

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 Nether Wallop

We reseal washrooms and wet areas in offices, hotels, schools, universities, gyms, healthcare buildings and care homes, along with staff kitchens and tea points. The products and the method are chosen for how heavily each space is used. Site teams most often ask us about shower tray joints that have opened up and stained or open joints at kitchen sinks and worktops, across IPS panels and cubicles, accessible toilets and changing rooms and showers, trays and wet room floors. Whether you call it commercial sealant work, mastic application or joint sealing, the work in Nether Wallop is the same: failed joints cut out, faces prepared and the right sealant laid to the right depth.

In and around smaller places like Nether Wallop, washroom work is often in halls, pubs, primary schools, care homes and holiday accommodation. Mould gets into sealant in any washroom that doesn’t dry out, and once it’s in, the sealant is replaced.

Our 12-month guarantee is about workmanship, not wear and tear. Sealant wears with time, and movement, weather, cleaning and use decide how fast, so we are clear about what is covered before work starts.

The Mastic Doctor team beside their liveried vans in front of an office building
Place
Nether Wallop (SO20)
Wider area
Hampshire
Cover
12 months on every job
Price
A fixed quote before we start
Telephone
01277 525 020
Updated
3 November 2026

Toilets, showers and kitchens around Nether Wallop

Central London is about 69 miles from Nether Wallop, within the office belt around the capital. Business park offices have washrooms in daily use by staff, which is why the work is phased.

Schools such as Wallop Primary School have toilets, changing rooms and kitchens that are best resealed in the holidays. Hotels such as Fifehead Manor Hotel, 1.2 miles north-west of Nether Wallop, have en suite bathrooms where tired silicone at the bath, tray and basin is replaced room by room. Church halls and community buildings, such as those at Church of St Andrew, have kitchens and toilets used by many groups, and their sanitary sealant works hard.

Nether Wallop is about 7 miles south-west of Andover, in Hampshire. Anywhere in SO20, it works the same way: send details, get a fixed quote, we seal, and the work is guaranteed. Nether Wallop is one of 723 places in Hampshire on our list. There’s a separate page for Southampton, roughly 16 miles from Nether Wallop.

We cover the SO20 postcode districts. For a building on Church Road, High Street and Church Hill or nearby, send details and we will quote for washrooms and wet areas. Sites close to Nether Wallop are covered too, including Middle Wallop (1 mile north-west), Over Wallop (2 miles north-west), Kentsboro (2 miles north), Red Rice (4 miles north-east) and Fox (4 miles north). A short drive away, we cover Winchester (12 miles south-east), Eastleigh (15 miles south-east), Andover (7 miles north-east), Totton (15 miles south), Chandler's Ford (13 miles south-east) and Romsey (10 miles south).

Local landmarks in Nether Wallop

We work on buildings around The Old Butchers Arms and the streets around them. The nearest railway station is Grateley station, roughly 3.8 miles north-west of the centre. Not far away are Boscombe Down East.

Map of Nether Wallop © OpenStreetMap contributors

How the job changes by surface

Changing rooms and gyms

Gym and leisure changing rooms see showers running most of the day so sealant there works very hard. We use anti-mould sanitary silicone throughout.

IPS and cubicle panels

Cubicle and IPS panels move when leaned on or knocked so the bead needs to cope with it. We check fixings before sealing.

Building owners, agents and FMs in Nether Wallop

Blocks and communal areas make up much of the work for housing associations and agents. Work can be phased so residents and staff keep access throughout, with each stage agreed with your site contact.

We take on planned maintenance as well as one-off repairs: working through a building or an estate in stages that fit your budget. Sites in Nether Wallop can sit alongside others in a wider programme.

Diagnose, treat, sign off

Before we leave any area, the masking comes off, the area is cleaned and every joint is checked, ready for your sign-off. Where the sealant needs time to cure before use, we tell you and sign the area. Jobs in and around smaller places like Nether Wallop are normally planned as a single visit, so we ask for photographs and rough sizes first. That way the right products come on the day.

  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. We clean and dry every surface so the new sealant can grip.
  5. A bead of anti-mould sanitary silicone goes in and is tooled to a smooth, cleanable profile.
  6. Each room is handed back once the sealant has had its cure time.

What we need from you

  • Send any specification or drawings in advance
  • Tell staff and tenants when we’ll be in
  • Clear stock, furniture or equipment away from the joints

Quotes

A handful of photos and a postcode is the fastest way to a quote. Upload them with the quote form, or call the office on 01277 525 020 or email drawings and photos if you’d rather talk the job through.

Get a quick quote

Advice

When to bring in a specialist

Paperwork matters too. 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.

Your questions answered

Is Nether Wallop too far out for you?

Not at all. Nether Wallop is within our area. London and every South East county are within our area. Good photos up front let us bring everything on the first visit.

What paperwork can you provide for a job in Nether Wallop?

Whatever your site asks for, from RAMS to CSCS details, is confirmed when we quote. Our applicators are CSCS-carded, and we carry £5m public liability insurance.

What if there’s asbestos in the old mastic?

Some older mastics, especially in pre-2000 buildings, can contain asbestos. We check the asbestos register before cutting out old sealant in an older building, and work stops until any suspect material has been tested. Removing asbestos is a job for asbestos specialists, not us.

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.

Will you come and look before quoting?

Photos, drawings or a schedule are often enough to quote. If the job needs a look first, we will arrange a visit before quoting.

Is there a guarantee on the work?

There is a 12-month guarantee on our workmanship, and we carry public liability insurance.

What’s the quickest route to a quote?

You can use the quote form on this site; alternatively, call the office on 01277 525 020 or send details through our quote form. Include photographs or drawings if you have them.

Keeping the joints sound

For the best life from the joints:

  • Mention any site permits or estates rules at quote stage
  • Don’t leave trays and floors sitting wet
  • Keep a record of which washrooms need attention
  • Avoid scourers and harsh descalers on silicone

We hand each area back once the silicone has had the cure time the product needs. You’ll be told when showers and basins can be used again, and it helps if signs stay up until then.

A few failed joints can be resealed with hardly any disruption. Left, it tends to become a building-wide job and more closures to manage.

Quoting for work in Nether Wallop

Before we quote, we look at:

  • Which sealant the job calls for
  • Backing rod, priming and other preparation
  • Working within restricted access windows
  • The site’s rules and procedures

We don’t publish prices, because the scope varies so much from one building to the next. Call for a quote and we’ll price your job on its own details.

Before you send an enquiry

We can often quote from photographs and a few details. It helps to include:

  • The asbestos register, for older buildings
  • Whether the building will be occupied during the work
  • The product your specification calls for
  • Drawings or a marked-up plan, if available

For a fixed quote, speak to us on 01277 525 020 or send details through our quote form, telling us the site location and the nature of the job. Our quote form is another easy route.

Accreditations

Trusted. Accredited. Insured.