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

Washroom Sealing in Avery Hill

Washroom sealing for Avery Hill, from a contractor working since 2005. Fully insured and CHAS accredited.

  • Open joints along basins and vanity units
  • Kitchen worktop joints that can’t be kept clean
  • Users noticing mouldy joints
1
Send details
Drawings, photos, a joint schedule or a site 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
12-month guarantee on our workmanship.
South East, London & Scotland
CHAS & Constructionline
Fully insured: £5m PL

Washroom sealing in Avery Hill

Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.

About our washroom sealing in Avery Hill

Whether it’s a single toilet block in Avery Hill or a programme across several buildings, we work the same way: details first, then a fixed quote, then the work, then the 12-month guarantee. A few photos and a count of fittings are enough for a quick quote and a site visit is an option. Site teams most often ask us about users noticing mouldy joints and shower tray joints that have opened up, on accessible toilets and changing rooms, showers, trays and wet room floors and urinals and WCs. Whoever orders the work in Avery Hill, the brief is typically the same: a fixed quote, no surprises on site and a 12-month guarantee behind the result.

In a London area such as Avery Hill, commercial washrooms in offices, hotels and leisure buildings see constant use. We cut out tired sealant around vanity units, cubicles, IPS panels and showers and lay fresh anti-mould sanitary silicone, a block of facilities at a time.

Every job is signed off with a 12-month guarantee. It’s a plain promise: if the work we did fails within twelve months, we return to fix it.

Location
Avery Hill (SE9, DA15, DA16)
Wider area
Greater London
Guarantee
12 months on every job
Quote
Fixed quote, scope in writing
Call
01277 525 020
Last updated
3 November 2026
The Mastic Doctor team beside their liveried vans in front of an office building

Looking after the joints

Every sealant joint needs some looking after, and how long they last depends on how they’re treated. We suggest:

  • Don’t leave an open joint at a basin or tray
  • Brief cleaning staff to treat joints gently
  • Photograph and log failed joints across the estate
  • Inspect washroom sealant regularly

Where possible, have shower floors and trays squeegeed after busy periods. Standing water on a joint all day shortens its life.

Mouldy sealant only gets harder to ignore and users notice. Dealing with it while it’s just the sealant keeps it simple.

Common problems we fix in Avery Hill

Low-level joints get hit by mop buckets, cleaning trolleys and feet, especially at floor edges and around urinals and WC pans.

Things that typically lead to an enquiry:

  • Black mould inside silicone joints that cleaning can’t shift
  • Failed joints along IPS and cubicle panels
  • Kitchen worktop joints that can’t be kept clean
  • Gaps where vanity tops meet the wall

Office toilets at parks like Green Lane Business Park (to the south-west of Avery Hill) take steady weekday use, and mouldy silicone soon shows.

Comparing quotes

  • How they handle RAMS and site documents
  • How joint depth will be controlled
  • The terms of the workmanship guarantee
  • Their plan for phasing and protecting the area

Choosing a commercial sealant contractor

Wet areas in Avery Hill’s workplaces

There are a number of hotels within about 2 miles of Avery Hill. Behind every hotel door there’s a bathroom whose sealant will need renewing sooner or later. We work a handful of rooms at a time, so the hotel keeps letting the rest. There are nine care or nursing homes within about 2 miles of Avery Hill. In care settings, wet rooms, assisted bathrooms and en suites rely on clean, sound sealant. Work is agreed with the manager, around residents’ routines.

Healthcare washrooms on sites such as Eltham Community Hospital, 1 mile to the west of Avery Hill, are resealed area by area, under the site’s own infection-control rules. For a campus such as University of Greenwich - Avery Hill (less than half a mile south of Avery Hill), showers in residences and washrooms in teaching blocks can be programmed around term dates.

Avery Hill is about 1 mile north-east of Eltham, in Greater London. We cover Avery Hill, with the same fixed quotes and 12-month guarantee as everywhere else. Avery Hill is one of 764 places we cover in Greater London for washrooms and wet areas. Sites around London have their own page, roughly 8 miles from Avery Hill.

Commercial sites across SE9, DA15 and DA16 are covered. If your site is on Bexley Road, Glenure Road and Perpins Road or close by, we can quote for washrooms and wet areas. Being close to the A210, Avery Hill is straightforward for us to reach. Just outside Avery Hill, we also work in Blackfen (1 mile east), Eltham (1 mile south-west), New Eltham (1 mile south), Falconwood (1 mile north-east) and Well Hall (1 mile west). Nearby towns on our patch include London (8 miles north-west), City of Westminster (11 miles north-west), Marylebone (11 miles north-west), Kensington (12 miles west), St Pancras (10 miles north-west) and Shoreditch (8 miles north-west).

Landmarks near Avery Hill

In Avery Hill, that means premises near Shoulder of Mutton Green and Alderwood Primary School. The closest station to Avery Hill is Falconwood station, roughly 0.6 miles north. Well-known places in the area include Greenwich Castle (3.8 miles north-west) and Metropolitan Police Museum (1.7 miles south-east). For a walk, there’s Summer Hill and The Tarn.

Map of Avery Hill © OpenStreetMap contributors

Commercial clients in Avery Hill

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.

Main contractors use us as their sealant subcontractor on new-build and refurbishment projects. We work to your programme, your specification and your site rules, and our applicators hold CSCS cards.

Your questions answered

Will you plan work around the academic year at somewhere like University of Greenwich - Avery Hill?

Yes. Tell us the term dates, vacation periods and access windows, and we’ll plan the work around them. Tell us which site documents you need, such as RAMS, our insurance certificate or CSCS details, and they’re confirmed with the quote.

Do you take on jobs in Avery Hill where loading and access are tightly controlled?

Yes, most London buildings have access rules of some kind, and we plan around them. Say when the building is occupied and when it’s quiet, and we will plan accordingly. We allow for the ULEZ, which covers every borough

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.

What about RAMS and site documents?

Tell us what site paperwork you need (RAMS, insurance certificate, CSCS details) and we’ll confirm with the quote.

How do you choose the sealant?

If the job is specified, we follow the specification. Otherwise, we recommend a product to suit the joint’s movement, the substrate and the conditions, following the manufacturer’s guidance.

Does weather matter for sealant work?

For external joints, yes. The joint has to be dry and within the product’s temperature range, so frost, rain or cold mornings can delay outside work. Inside work is seldom held up.

Is it OK to put new silicone on top of the old?

The whole of the old bead is removed and the surfaces cleaned first. That’s what makes the new joint last.

Surface by surface

Healthcare and care settings

Accessible and assisted washrooms are used and cleaned intensively so their sealant tends to fail sooner.

IPS and cubicle panels

IPS panels and cubicle systems have joints at the wall, the floor and the worktop. Those joints protect the boards behind from water.

What sealant work can’t fix

We seal joints; we don’t mend everything behind them. On its own, sealant can’t deal with:

  • Failed tanking beneath a wet-room floor or behind tiles
  • Swollen or delaminated boards behind panels or vanity tops
  • Fittings that move too much to hold a bead

Not sure which it is? You can speak to us on 01277 525 020 or send details through our quote form and we will tell you honestly before you book.

Joints and surfaces we work on

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

Diagnose, treat, sign off

Inspect, seal, sign off: every visit follows that pattern. First comes an inspection and agreement on scope, then we prepare and seal each joint with the specified product, and we finish with a walk round so the work can be signed off. In Avery Hill, most buildings stay in use during the work, so zones and timings are agreed with whoever manages the building. Phased work keeps the rest of the building in use.

  1. First, the phasing is agreed so facilities stay open.
  2. Anything behind the joints that needs another trade is flagged.
  3. Old sealant is stripped and the faces prepared.
  4. The right sanitary or food-safe sealant is applied.
  5. We give you a reopening time for every room.

Getting the site ready

  • Send your site hours and access windows
  • Tell us which areas need to stay in use
  • Confirm the product named in the specification

Getting a fixed quote

If there’s a specification, drawings or a tender package, send it with your enquiry, and we’ll price against exactly what is specified. For smaller jobs, photos and a description will do.

Get a quick quote

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