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Hospital / clinic

Hospitals need hygienic, easy-to-clean wet areas, floors and walls, and joints that do not hold dirt. Water tanks, fire-rated penetrations and a dry roof keep the building in service.

Hospital building with a ward cut open, showing a seamless orange floor coating that curves up the walls

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Solutions in build order

What this project needs, step by step

Basement section with a membrane on the outside face of the wall and under the floor slab, facing the groundwater. Basement waterproofing from outside (positive side) For new basements, or where the soil can be dug away, stop water on the face that the soil and groundwater press against. Build watertight concrete, seal every joint, coat or sheet the outside face, then backfill carefully. 7 steps Section of an underground concrete water tank in wet soil, lined on the inside, with joint waterbars and a sealed pipe Underground water tank Below-ground tanks leak out when full and let groundwater or dirty water seep in when empty. Plug and repair, then line the inside with a drinking-water coating; on new tanks, build watertight concrete and joints first. 7 steps Pipe passing through a concrete floor slab with an orange sealing collar round it and orange sealant at the top Pipe and service penetrations Pipes, ducts and cables passing through basement walls, tank walls, roofs and fire-rated floors are weak points for water and fire. Seal each one for its job: watertight, weathertight, fire-rated, or a simple interior gap. 6 steps Joint between two wall sections sealed on both faces with orange fire-rated sealant, with flames on one side Fire-rated joints Joints in fire-rated walls and floors, such as stair and lift shafts, compartment walls and plant rooms, must hold back fire and smoke for the rated time. The rating comes from a tested configuration, not from the sealant alone. 6 steps Section of a bathroom floor with waterproofing turned up the walls under the tiles, sloping to a floor drain Bathroom waterproofing (under tiles) Most home leaks start in bathrooms: water gets through grout and cracks, runs along the slab and shows as seelan on the ceiling below or the wall next door. Strip, seal cracks, waterproof the floor and lower walls, then tile, grout and seal the fittings. 6 steps Section of a walk-in shower with full-height waterproofing behind the tiles, sealed pipes, a drain and a glass screen Shower area & walk-in shower The shower is the wettest spot in the house: floor, walls, niche and drain are soaked every day. It needs a continuous waterproof layer from floor to wall, epoxy grout and a mildew-resistant sealant at every corner. 6 steps Tiled shower wall with orange grout lines, falling water, and a cartridge gun filling a joint Epoxy tile grout (showers, kitchens, hospitals) Two-part epoxy grout from a cartridge gun gives stain-resistant, easy-clean joints in wet rooms, kitchens, malls, hospitals and indoor pools. It is for interior use, and the tile face needs protecting during grouting. 7 steps Bath against a tiled wall with an orange silicone bead where the bath rim meets the tiles, and a shower running Sanitary sealing (baths, basins, showers and kitchen tops) Silicone joints where tiles meet baths, shower trays, basins, WCs and kitchen worktops. Choose a mildew-resistant sealant that suits the surface, and reseal before water gets behind the tiles. 6 steps Glossy speckled decorative floor surface with a section below showing the coloured layer, primer and concrete slab. Decorative floors Showrooms, offices, malls, lobbies and homes want floors that look good and still wear well. Options range from coloured epoxy with décor granules and soft polyurethane to terrazzo-look PU, coloured dry-shake and polished concrete. 7 steps Concrete building facade half coated with a protective coating by a roller on a pole, with rain beading off. Protective coatings & water repellents for concrete Coatings and impregnations that keep water, chlorides and carbon dioxide out of concrete facades, bridges, car parks and repaired structures. Choose a clear impregnation, an anti-carbonation coating or a crack-bridging coating to suit the exposure. 8 steps Flat roof section with an exposed coating on the slab, turned up and over the parapets and into the drain outlet. Exposed roof waterproofing A liquid-applied membrane that stays open to sun and rain on a flat or sloped concrete roof (chhat). Use it on a new roof once the slab is 28 days old, or to refurbish a leaking roof before the monsoon. 6 steps Section of a rooftop concrete water tank full of water, lined on all inside faces, with sealed pipe entries Overhead water tank (drinking water) Rooftop RCC tanks that leak, wet the ceiling below or show rust stains. Repair the concrete first, then line the inside only with products whose data sheet allows drinking-water contact. 6 steps