In a hotel, tired sealant is a guest complaint waiting to happen. A grey line around a bath or a lifted bead at a shower tray gets photographed and posted long before it leaks. Fixing joints one room at a time, whenever housekeeping reports them, keeps the problem alive. A planned programme works better. This guide sets out how hotel operators and their facilities teams can structure one.
Start with a quick condition sweep
Before anyone is booked, get a picture of the whole stock. Housekeeping already enters every room daily, so a simple checklist on their round is often enough. Ask them to note, room by room:
- black or pink staining that won’t wipe off
- beads that have lifted, split or shrunk away from the tile or tray
- gaps behind vanity tops and around basins
- joints that have been sealed over the top of old sealant
- any signs of water below, such as stained ceilings in the room underneath
That list lets you rank rooms by urgency rather than guess.
Phase by floor, wing or block of rooms
Most hotels release rooms in groups. A typical approach is to take a run of rooms out of inventory, reseal them, let the sealant cure, and hand them back before the next group goes out. The size of each group depends on occupancy and how many rooms the applicators can finish in a shift. Tell us your site hours and access windows and we’ll plan around them. Public toilets, spa areas and back-of-house kitchens can follow the same pattern so that some facilities always stay open.
What a proper reseal involves
Sealing over a mouldy bead looks fine for a few weeks and then fails. Silicone does not bond to old silicone, so the failed sealant has to be cut out completely. The joint is then cleaned back to sound, dry surfaces with no dust or soap residue left behind. In bathrooms, a sanitary silicone with anti-mould additives is the usual choice. Mould grows into the body of the sealant, which is why stained beads are replaced rather than scrubbed. Our washroom sealing page covers the wet-area side in more detail.
Need the work done? Mastic Doctor covers South East England, London and all of Scotland, with a 12-month guarantee on our workmanship. Send details for a fixed quote.
Cure time and handing rooms back
Each product has its own cure time, and it varies with temperature and humidity. Build that into the schedule. A room resealed in the morning may not be ready for a guest shower that evening, depending on what the data sheet says. Agree a clear rule with housekeeping and the front desk so rooms don’t get let too early. A small sign in the bathroom helps.
Beyond the bedrooms
Bedrooms get the attention, but other joints matter too:
- commercial kitchens, where cleanable joints help hygiene (see our guide to hygienic sealing in kitchens)
- window and door perimeters, where failed sealant lets in draughts and rain
- fire-resisting walls and floors where services pass through, which should be checked after any refit
- lobby and bar finishes, where a colour-matched sealant keeps the design intact
Folding these into the same programme means one contractor, one set of site paperwork and one point of contact. More on hospitality work is on our hotels page.
Keeping a record room by room
Log each room as it is done: the date, the joints resealed and the product and colour used. That record makes the next cycle easier to plan and helps when a guest complaint needs checking against recent work. It also shows owners and operators where money has gone across the estate.
Quick answers
How many rooms can be done in a day?
It depends on the size of each bathroom, how much old sealant there is and how easy the rooms are to reach. Send the room list and photos of a typical bathroom and we’ll set out a realistic daily rate in the quote.
Can work happen while the hotel is open?
Yes. Phased work can be planned so most rooms and public areas stay in use. Tell us your access windows and we’ll agree the order of rooms in advance.
Why does mould come back so quickly?
Usually because the old sealant was not fully removed, the joint was damp when sealed, or the room has poor ventilation. A full cut-out, a dry joint and an anti-mould sanitary silicone give the best chance of a clean result.
Related services
- Commercial washroom and wet-area sealing
- Commercial sealant contractors
- Coloured and colour-matched sealant
More advice
- Planned Sealant Maintenance for FMs
- Hygienic Sealing in Commercial Kitchens
- How Long Does Commercial Sealant Last?
- Adhesive, Cohesive and Substrate Sealant Failure
- All advice
This guide is general information about sealant work. It isn’t legal, fire-safety or structural advice; for those, speak to a qualified professional.