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

Washroom Sealing contractors in Longstock

We carry out sealing in commercial washrooms, showers, kitchens and wet areas in Longstock and the surrounding area. Send details for a fixed quote.

  • Failed sealant behind washroom basins
  • Stained sealant around pans and urinals
  • Failed joints along IPS and cubicle panels
1
Send details
Drawings, photos, a joint schedule or a site visit.
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.
London, the South East & Scotland
CHAS & Constructionline
£5m PL insurance

Washroom sealing across Longstock

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

Washroom sealing in Longstock

Black spotting along a sealant bead is not a cleaning problem. The growth is inside the sealant so it returns whatever the cleaning regime. Only replacement gets rid of it for good. If you are dealing with sealant lifting along a tray edge and washrooms that look worn because of the sealant, we can put it right, on showers, trays and wet room floors, kitchens and tea points and vanity units and basins alike. One point of contact handles commercial sealant work in Longstock from the first photos to the final walk-round, for single jobs and planned programmes alike.

Community buildings around smaller places like Longstock have kitchens and toilets used by many people. Resealing sinks, worktops and WCs with anti-mould silicone keeps them clean and watertight.

A 12-month guarantee applies to all our work in Hampshire. Should something we installed fail, phone 01277 525 020 or send details through our quote form and we’ll come back to it.

The Mastic Doctor team beside their liveried vans in front of an office building
Location
Longstock (SO20)
Wider area
Hampshire
Cover
12 months on our workmanship
Quote
Quoted before any work starts
Phone
01277 525 020
Page updated
3 November 2026

Diagnose, treat, sign off

Before any cutting starts, the area is protected: masking tape along the joint edges and sheeting over anything nearby. The work itself normally takes a morning or so for a small washroom, longer where showers and changing rooms are included, and our waste is bagged and taken away as we go. Rural sites near Longstock may need directions, gate codes or a contact on site. Add it to your enquiry and we’ll build it into the plan.

  1. Every room is surveyed and the failed joints listed.
  2. You get a fixed quote with the phasing plan.
  3. Old sealant is removed completely and the faces cleaned.
  4. Joints are degreased and dried.
  5. New anti-mould sealant goes in and is tooled neat.
  6. Rooms reopen after the cure time.

What we need from you

  • Clear stock, furniture or equipment away from the joints
  • Have the specification and drawings to hand
  • Warn occupants and staff about the work

Getting a fixed quote

We quote a fixed sum against the scope you give us, so you know the figure before anyone is on site. To start the process, give us a call on 01277 525 020 or email a schedule or drawings.

Get a price

Read more

What happens if it’s left?

Sealing on top of old silicone saves nothing. It doesn’t bond, so it peels and traps dirt behind it. Full removal and proper cleaning is what makes the new joint last. Around Longstock, it’s better to renew all the failing joints at once. Send photographs of each area and we’ll quote for the lot.

A quote for washrooms and wet areas depends on how many there are, their condition and the access, plus any specification you’re working to. Call for a quote.

Why appoint us

  • One number for every site we cover
  • Workmanship guaranteed for 12 months
  • Colours confirmed for the specified product
  • Health and safety: CHAS accredited

Take a look at how commercial sealant jobs are priced or our accreditations and insurance.

Work for main contractors and building owners

Planned maintenance programmes are welcome: resealing failed joints building by building, on a schedule that suits your budget. Longstock can form part of a wider programme across Hampshire.

Main contractors use us as their sealant subcontractor. We work to your programme, your specification and your site rules, with CSCS-carded applicators on site.

Washroom sealing around Longstock: points for this area

Longstock has a number of hotels close by, all within 2 miles. En suite bathrooms, staff changing rooms and kitchens all need their sanitary silicone renewed in time. We work a handful of rooms at a time, so the hotel keeps letting the rest. Longstock lies roughly 65 miles out from central London. Business park offices have washrooms in daily use by staff, so we work a block of facilities at a time.

For a hall at a building such as Church of St Mary, resealing the kitchen and toilets can be fitted between bookings. For a hotel such as Sheriff House Hotel, 1.3 miles south of Longstock, resealing en suites a few rooms at a time keeps the rest available. At a school such as Test Valley School, changing rooms and kitchens need cleanable joints as much as the toilets.

Longstock is about 5 miles south of Andover, in Hampshire. Commercial clients in Longstock use us for work on washrooms and wet areas. Our Hampshire coverage takes in 723 places, from busy centres to rural villages. We also cover Southampton, around 15 miles from Longstock.

Business premises anywhere in SO20 are within our area. If your building is just outside Longstock, we cover Leckford (1 mile east), Stockbridge (1 mile south), Fullerton (2 miles north-east), Cottonworth (2 miles north-east) and Chilbolton (3 miles north-east). Further afield, our area takes in Winchester (9 miles south-east), Eastleigh (13 miles south-east), Andover (5 miles north), Totton (15 miles south), Chandler's Ford (11 miles south-east) and Romsey (10 miles south).

What’s near Longstock

We work on buildings around Longstock Park and The Peat Spade Public House, among other places. Other landmarks nearby include Andover War Memorial Hospital (5.8 miles north). For a walk, there’s Mill Lake.

Map of Longstock © OpenStreetMap contributors

How the quote is worked out

A fixed quote reflects the actual work. It allows for:

  • Any access equipment needed
  • Backing rod, priming and other preparation
  • Induction, permit and paperwork requirements
  • Specialist products, such as fire-rated or hygienic sealants

Access can matter as much as the joints themselves: joints within easy reach take less time than ones that need access equipment. Tell us how the joints are reached and call for a quote.

What to include in your enquiry

A few photographs plus some basic facts will normally do. It helps to include:

  • Access details, including height
  • The site address and postcode
  • Drawings or a marked-up plan, if available
  • Photos of the joints, close up and from further back

A handful of photos and a postcode is the fastest way to a quote. Send them through the quote form, or ring 01277 525 020 or email a schedule or drawings if you’d rather talk the job through.

Questions we’re asked in Longstock

Is Longstock too far out for you?

No. Places such as Longstock are covered as much as the big towns. We cover Greater London and the counties of the South East. We plan jobs in smaller places so return trips are kept to a minimum.

Will our hotel in Longstock need to close for the work?

Rarely. Rooms or floors are done in turn, so the rest of the hotel keeps trading. Housekeeping and our team agree each day’s rooms.

Will all the toilets be closed at once?

Just the room being resealed is out of use. Each room reopens after the sealant’s cure time, then we move on.

What happens if old sealant might contain asbestos?

Asbestos is possible in some older mastics, particularly in buildings from before 2000. Before we disturb old sealant in an older building, we ask to see the asbestos register or survey, and work stops until any suspect material has been tested. Removing asbestos is a job for asbestos specialists, not us.

Do you work to architects’ specifications?

Yes. Include it with the drawings when you ask for a quote, and the quote will be based on it.

Are you fully insured?

Yes. Our insurance certificate can be sent alongside the quote.

Do you work in hospitals, clinics and care homes?

Yes. We work to your estates and infection-control requirements and any site permits, and phase the work so areas keep facilities.

What sealant work can’t fix

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

  • Swollen or delaminated boards behind panels or vanity tops
  • Water escaping beneath the floor rather than through a joint
  • A room that stays damp because ventilation isn’t working

If in doubt, ring 01277 525 020 or email drawings and photos and we’ll say what we think before you book.

Surfaces we seal

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

Doing it in-house

For most general trades, sealant is a sideline. 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.

Redoing a failed joint normally costs more than getting it right at the outset, because the whole bead must be removed and the faces cleaned back again. For that reason, many FMs and contractors use a sealant specialist from the outset.

Accreditations

Trusted. Accredited. Insured.