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

Washroom Sealing contractors in Basingstoke

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

  • Complaints from staff, guests or users about tired washrooms
  • Split or peeling sealant at shower trays
  • Stained or open joints at kitchen sinks and worktops
1
Send details
Photos, drawings or a schedule, or we visit.
2
Get a quote
One fixed quote covering the agreed scope.
3
We seal
Prepared joints, the specified product, a tidy finish.
4
Guaranteed
Our workmanship is guaranteed for 12 months.
South East, London & Scotland
CHAS & Constructionline
Fully insured: £5m PL

Need washroom sealing in Basingstoke?

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

About our washroom sealing in Basingstoke

Black spotting along a sealant bead is not a cleaning problem. The growth is inside the sealant, which is why it comes back however often it is treated. Only replacement gets rid of it for good. We work on accessible toilets and changing rooms, vanity units and basins and kitchens and tea points, and the failures we are asked to look at most are complaints from staff, guests or users about tired washrooms and sealant laid over old silicone and now peeling. Sealant applicators who only do sealant are a different proposition from a general trade with a gun in the van: in Basingstoke, that means joint design, primers and backing rod as standard.

Retail parks, shopping centres and business parks around large towns like Basingstoke have customer and staff toilets that rarely close. Phased work keeps enough facilities open while the sealant is replaced.

The 12-month guarantee covers our workmanship: the preparation, the sealing and the tooling. It doesn’t extend to damage, other trades’ later work or movement the joint was never designed to take.

Place
Basingstoke (RG24, RG22, RG21, RG23)
Region
Hampshire
Cover
12 months on our workmanship
Quotes
Fixed quote, scope in writing
Phone
01277 525 020
Updated
3 November 2026
Mastic Doctor team members lined up next to their branded vans outside an office building

Maintenance after handover

A few simple habits keep the new joints working:

  • Keep a record of which washrooms need attention
  • Clean sealant with gentle products and a soft cloth
  • Mention any site permits or estates rules at quote stage
  • Report split joints at trays and basins early

If a joint we sealed fails within 12 months, tell us and we will look at it. After that, a routine look catches failing joints early.

Small numbers of failed joints are quick to phase in. Left, it tends to become a building-wide job with more phasing to plan.

FAQs: Basingstoke

Will you work in a care home in Basingstoke without moving residents out?

Yes. Care settings are planned area by area, at times agreed with the home. We follow the home’s own procedures throughout.

Does a hotel in Basingstoke need to shut while its sealant is renewed?

Almost never. The work is phased so most rooms stay available. Housekeeping and our team agree each day’s rooms.

How many days will you need on site?

That varies with the scale of the job, but the work normally takes between a morning and a week or so, set by the number of rooms and the phasing you need. Larger or phased jobs take longer, and we will give you a timescale with the quote.

How long do sealant joints last?

It depends on movement, UV and weather, cleaning, traffic and the product. Sealant joints are maintenance items, so inspect them regularly.

Can you handle several sites?

Yes. A group of buildings can go on one quote, and you deal with one contact throughout.

What guarantee comes with washroom resealing?

A 12-month guarantee covers the work. It applies to our workmanship, not to plumbing leaks or damp from poor ventilation.

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 if asbestos is suspected, work stops until it’s tested. Removing asbestos is a job for asbestos specialists, not us.

When to bring in a specialist

There’s also the paperwork. Many sites expect CSCS cards, RAMS and proof of insurance, and we’ll confirm the paperwork you need with the quote.

Some joints are best left to specialists: for instance fire-rated seals that must match a tested detail, trafficked floor joints and external movement joints. A poor seal in places like these tends to cost more to put right later.

Our process

Tell us your site hours and access windows and we’ll plan around them. On the day, the work area is kept contained and tidy, and we check in with your contact before moving on to each new area. Jobs in a large place like Basingstoke are often on business parks, retail sites or campuses with their own sign-in and permit rules. Send the site rules with your enquiry and we’ll plan to them.

  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. Joints are degreased and dried.
  5. A sanitary silicone bead is laid and given a smooth tooled finish.
  6. Each area is handed back when ready.

Preparing the site

  • Agree which areas must stay open
  • Clear stock, furniture or equipment away from the joints
  • Point out parking and an unloading spot

Get a fixed quote

Quotes are fixed against the scope you send, so the cost is agreed before work starts. To ask for one, call 01277 525 020 or email the details over.

Get a price

Advice

How the quote is worked out

We price every job individually. The main factors are:

  • Joint width, depth and condition
  • Location, for remote and island sites
  • Any access equipment needed
  • Working within restricted access windows

The product called for affects the cost, as does the preparation each joint needs, from cutting out to priming and backing rod. Access, phasing and site requirements come into it too.

What we need to price the job

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

  • Clear photos of the problem areas
  • What the building is and how it’s used
  • Your programme or deadline
  • Approximate linear metres or a joint schedule

Let us know the site, the scope and your timescale, and we will put a fixed quote together. The easiest way is to call the office on 01277 525 020 or email drawings and photos.

When it isn’t the sealant

Honesty saves time and money. Fresh joints won’t solve:

  • Condensation from failed extract fans
  • Water from plumbing, not from a joint
  • Panel boards already damaged by water

If you are not sure, just speak to us on 01277 525 020 or email the details over and we’ll give you a straight answer.

What we seal

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

Wet areas in Basingstoke’s workplaces

A 2-mile radius around Basingstoke takes in plenty of hotels. Each has en suites, back-of-house toilets and kitchens with sealant that moulds and splits. At about 46 miles from central London, Basingstoke is within reach of the capital, in a commuter belt where offices and business parks are common. Office washrooms on business parks see heavy weekday use, so we work a block of facilities at a time.

Toilets at places like The Malls, 0.6 miles east of Basingstoke, are cleaned constantly, so silicone needs to be sound and smooth. At a hotel such as Great Western Hotel, which lies north-east of Basingstoke, the quieter weeks are the time to reseal bathrooms. Colleges such as Basingstoke College of Technology (to the east of Basingstoke) have toilets, changing rooms and catering kitchens that can be resealed around term dates.

Basingstoke is in Hampshire. We cover Basingstoke and the rest of Hampshire, with the same fixed quotes and 12-month guarantee as everywhere else. We work across 723 places in Hampshire, large and small. Sites around Reading have their own page, about 14 miles away.

Anyone looking for washroom sealing in RG24, RG22, RG21 and RG23 gets the same process as the rest of our area: send details, get a quote, we seal, guaranteed. If your site is on Church Square, Queen Annes Square and The Square or close by, send details and we’ll quote for washrooms and wet areas. Basingstoke sits on or close to the A30 and A33. Close to Basingstoke, our area also takes in South Ham (1 mile south-west), Winklebury (1 mile west), Brighton Hill (1 mile south), Rooksdown (1 mile north-west) and Buckskin (1 mile west). Nearby towns on our patch include Farnborough (15 miles east), Fleet (11 miles east), Aldershot (15 miles east), Alton (10 miles south-east), Yateley (13 miles north-east) and Tadley (6 miles north). Basingstoke is one of the busier places in Hampshire, and its commercial and public buildings are all within our area.

What’s near Basingstoke

Around Basingstoke, our work takes us to commercial buildings near Cranbourne, The Costello School and The Rising Sun pub, among other places. Basingstoke’s nearest station is Basingstoke station, about 0.6 miles east of the centre. Other landmarks nearby include Basing House (2.2 miles east) and The Malls (0.6 miles east). The countryside around Basingstoke includes Farleigh Hill and Daneshill Park Woods.

Map of Basingstoke © OpenStreetMap contributors

Building owners, agents and FMs in Basingstoke

Whether you’re a managing agent, a property factor or an owner’s representative: send details, get a fixed quote, we seal, guaranteed. Keys, access and contacts can be agreed in advance.

Hospitality, education, healthcare, office and retail clients book us directly too. The work is planned around how the building runs, so the building keeps working while we do.

Accreditations

Trusted. Accredited. Insured.