Commercial washroom and wet-area sealing in Hammersmith, Greater London
Planning work on a washroom in Hammersmith? We assess it, carry out the work and guarantee our workmanship for 12 months.
- Open joints at the base of cubicle panels
- Sealant lifting along a tray edge
- Discoloured joints around urinals and WC pans
Washroom sealing for Hammersmith sites
Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.
How we handle washroom sealing in Hammersmith
Not every silicone belongs in a washroom. Sanitary grades carry anti-mould additives, and neutral-cure types are used where acetoxy silicone could attack some metals, stone or mirror backings. In food areas, hygienic or food-safe sealants are used where food contact is possible. We work on urinals and WCs, vanity units and basins and accessible toilets and changing rooms, and the usual reasons a site gets in touch are a new bead over an old one coming away and failed sealant behind washroom basins. Looking for mastic applicators who cover Hammersmith? Mastic Doctor has worked for contractors, FMs and building owners since 2005, CHAS accredited and a Constructionline member.
Building managers in Hammersmith normally need some facilities open throughout. Washrooms are done core by core or floor by floor, with signage and a plan agreed beforehand, so staff and visitors can always find an open washroom.
Our 12-month guarantee is about workmanship, not wear and tear. How long a sealant joint lasts depends on movement, exposure, cleaning and use, so we spell out the cover before we begin.
- Where
- Hammersmith (W6, W14, W12, W4)
- Wider area
- Greater London
- Cover
- A 12-month guarantee
- Quote
- Quoted before any work starts
- Call
- 01277 525 020
- Last updated
- 3 November 2026
After the work
For the best life from the joints:
- Brief cleaning staff to treat joints gently
- Don’t leave an open joint at a basin or tray
- Make sure washroom ventilation is running
- Leave signs up until the cure time is over
Keep extract fans working and vents clear. Constant damp lets mould take hold even on anti-mould grades so report fans that aren’t working to your building services team.
Mould in a joint spreads along the bead and into nearby grout and users notice. Dealing with it while it’s just the sealant keeps it simple.
Also near Hammersmith
Also in Hammersmith
How a job runs
Before we leave any area, the masking comes off, the area is cleaned and every joint is checked, ready for your sign-off. If an area should be left alone while the sealant cures, we say how long and put signs out. Most London premises stay occupied while we’re on site, so zones and timings are agreed with whoever manages the building. Phased work keeps the rest of the building in use.
- We inspect each washroom and record the joints to be resealed.
- You get a fixed quote with the phasing plan.
- Old sealant is removed completely and the faces cleaned.
- Each joint is cleaned and left dry.
- A sanitary silicone bead is laid and given a smooth tooled finish.
- Each area is handed back when ready.
Preparing the site
- Send asbestos survey details if the building is pre-2000
- Send any specification or drawings in advance
- Clear stock, furniture or equipment away from the joints
Getting a fixed quote
Pricing a project or setting a maintenance budget? Send the scope and any drawings, and we’ll return a fixed quote you can plan around. For a chat about it beforehand, speak to us on 01277 525 020 or send photos by email.
Related advice
How the job changes by surface
IPS and cubicle panels
Cubicle and IPS panels move when leaned on or knocked so the bead needs to cope with it. Loose panels are flagged before any sealant goes on.
Urinals and WC pans
The joint between a pan and the floor is easy to overlook. We include them in the survey.
Hammersmith: questions and answers
Could you schedule work at a campus like Polish University Abroad for the vacation?
Yes, holiday working periods are the norm on campus jobs. We are CHAS accredited and a Constructionline member, and paperwork such as RAMS is confirmed with the quote.
Can you take on a job at a hospital such as Charing Cross Hospital?
Yes. Healthcare sites are among the places we work. Before anything starts, the estates team agrees permits, inductions and infection-control measures with us.
Can you follow the specification on our project?
Yes. The specification and the manufacturer’s installation guidance are what we work to, and any queries are raised before we start.
What happens if old sealant might contain asbestos?
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. We don’t remove asbestos-containing materials.
How many days will you need on site?
The duration is planned around your programme and the access we’re given. We will give you an estimate of time on site when we quote.
How long do sealant joints 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 checks let you plan resealing before leaks or damage.
Is there a guarantee on the work?
There is a 12-month guarantee on our workmanship backed by public liability insurance.
Toilets, showers and kitchens around Hammersmith
In London buildings, toilets and showers generally need to stay partly open, so we take one block of facilities out of use at a time. The area within 2 miles of Hammersmith holds plenty of hotels. 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.
In a centre such as Kensington Arcade (1.6 miles east of Hammersmith), public washrooms are resealed a block of facilities at a time. Office washrooms on sites such as Berghem Mews Business Village, 0.5 miles to the north-east of Hammersmith, are in use all working day, so resealing is phased to keep some open. For a college such as St Mellitus Theological College, which lies east of Hammersmith, half-term and summer give the windows for washroom work.
Hammersmith is about 1 mile west of Kensington, in Greater London. We send applicators to Hammersmith for washrooms and wet areas. Across Greater London, 764 places are covered, including Hammersmith. We also cover London, around 6 miles from Hammersmith.
Work on washrooms and wet areas is covered throughout W6, W14, W12 and W4, for business premises of every kind. If your site is on The Square, Ravenscourt Square and Westcroft Square or close by, we can quote for washrooms and wet areas. Nearby places we also cover include Brackenbury Village (1 mile north-west), Brook Green (1 mile east), North End (1 mile east), West Kensington (1 mile east) and Old Chiswick (1 mile south-west) for washrooms and wet areas. Bigger towns within reach include London (6 miles east), City of Westminster (4 miles east), Marylebone (4 miles north-east), St Pancras (5 miles north-east), Shoreditch (7 miles east) and Walthamstow (11 miles north-east).
Local landmarks in Hammersmith
Locally, jobs take us to sites close to The Duke of Hammersmith pub, Brook Green and Polish Library POSK in London, among other places. Hammersmith’s nearest station is Kensington Olympia station, roughly 0.8 miles east. A little further out are West London Hospital (under half a mile south-east) and Kurdish Museum Library and Archive (less than half a mile south-west). Open spaces near Hammersmith include Campden Hill and WWT London Wetland Centre.
General trades versus a specialist
Site maintenance staff can often handle a short internal joint. Where it goes wrong is preparation: sealing over old material, sealing onto damp or dusty surfaces, or a product that can’t take the movement.
Putting right a botched joint often costs more than sealing it well at the start, because the whole bead must be removed and the faces cleaned back again. That’s why many clients bring in a specialist from the beginning.
Owners, agents and contractors
Housing associations and managing agents often need work done across blocks and communal areas. We phase the work so people keep access, and each stage is agreed with your contact.
Planned maintenance programmes are welcome: working through a building or an estate in stages that fit your budget. Hammersmith can form part of a wider programme.
Leave it or put it right?
Cleaning mouldy sealant only masks it, but the mould is rooted in the silicone and comes back. A full reseal deals with it and cleaners stop fighting a losing battle. In Hammersmith, each extra visit means more notices, permits and disruption, so cutting the old sealant out fully and doing it right once is the better route.
Access can matter as much as the joints themselves: easy-to-reach joints are quicker than those that need equipment to get to. Tell us how the joints are reached and call for a quote.
Why choose Mastic Doctor in Hammersmith
- Coloured sealants to suit the setting, where available
- CHAS accredited contractor
- Colour agreed before work starts
- Failed material removed, not covered up
See how commercial sealant jobs are priced or how we’re accredited.