Bathrooms are where Bali villas fail first. The climate is brutal on wet areas: constant humidity, heavy use, and the near-universal local habit of tiling straight over bare screed with no real waterproofing membrane underneath. Within a year the water finds the gaps, and you get black mould, lifting tiles, and damp patches bleeding through to the room next door. Our bathroom renovations are built around one non-negotiable: a proper two-coat membrane system, flood-tested before a single tile goes down.
What's Included in a Bathroom Renovation
Strip-Out & Repair
Old tiles, fittings and failed waterproofing removed back to sound substrate, with any rotten or rusted structure repaired first.
Membrane Waterproofing
Two coats of liquid membrane on the floor and lower walls, sealed around every pipe and flood-tested for 24 hours.
Tiling & Stone
Floor and wall tiling, natural stone, terrazzo or micro-cement — laid to fall correctly toward the drain.
Fixtures & Ventilation
New plumbing, vanity, WC, rain shower, glass screen, and the extraction or louvres that keep humidity from rotting the room again.
Why Bali Bathrooms Need More Than a Retile
A retile over old, failed waterproofing is the most common — and most expensive — mistake we are called to fix. It looks fine for a season, then the leak returns and you pay twice. Open-plan and outdoor bathrooms, beloved in Bali villas, raise the stakes further: they take direct rain and need drainage and finishes specified for it. We treat every bathroom as a waterproofing job that happens to have nice tiles on top, which is why ours carry a 5-year waterproofing warranty rather than the usual 12-month nod. For coastal villas we pair this with our waterproofing systems on adjoining terraces.
Wet-Room Bathrooms: Level Floor, One Drain, No Shower Tray
Most bathroom renovations we quote in Bali now end up as wet rooms: the shower tray and the step disappear, the whole floor falls gently to one linear or square drain, and the shower zone is separated by a single glass panel. It looks cleaner and is quicker to clean between guests — but it only works if the whole room is treated as a shower. That means the screed is laid to a fall toward the drain across the entire floor, the membrane runs across the full floor and up every wall to shower height (not just the shower corner), and the door threshold is detailed so water cannot track into the bedroom. Outdoor and semi-open bathrooms get the same treatment plus slip-rated stone and a drain sized for a tropical downpour, not just for a shower head.
The Order of Works in a Bathroom Renovation
Strip-out and inspection
Tiles, screed and fittings come out back to the slab and walls. This is when hidden damage shows — rotten timber under a vanity, corroded pipes, a cracked slab — and we photograph it and agree any variation before going further.
Plumbing and electrics rough-in
New supply and waste runs, the drain position for the wet-room fall, wiring for the extraction fan, heated rail and mirror lights.
Screed to falls
A sand-cement screed laid to fall toward the drain, then left to cure — the stage that most often gets rushed on Bali sites.
Membrane and 24-hour flood test
Two coats of liquid membrane with reinforced corners and pipe collars, then the floor is flooded for 24 hours. No tile goes down until it holds.
Tiling, fixtures and glass
Floor and wall finishes, vanity, WC, shower set, glass panel, silicone and ventilation — then a final water test with you before handover.
A guest bathroom usually takes 2–4 weeks from strip-out to handover; the flood test and the screed cure are the two stages we never compress. In a rented villa we renovate bathrooms one at a time, so the rest of the house keeps working.
Bathroom Renovation Prices by Size
A standard guest bathroom renovation starts around IDR 60 million; a master ensuite with stone, a freestanding tub and bespoke joinery runs IDR 120–220 million. The variables are size, the finishes you choose, and whether plumbing needs relocating. Most bathrooms take 2–4 weeks, with the waterproofing flood-test and screed cure being the parts we will not rush. See the full pricing breakdown.
| Bathroom | Guide Price (IDR) | Typical scope |
|---|---|---|
| Small guest bathroom or shower room | from 60,000,000 | Strip-out, membrane, retile, WC, basin, shower |
| Standard ensuite with walk-in / wet-room shower | 60,000,000 – 120,000,000 | Full strip, falls to one drain, new vanity and glass |
| Large master ensuite | 120,000,000 – 220,000,000 | Stone, freestanding tub, custom vanity, relocated plumbing |
| Open-air / outdoor bathroom | by quote | Drainage and rain-tolerant fixtures designed in |
| Re-waterproof only (per m²) | 250,000 – 400,000 | Two-coat membrane, flood-tested |
FAQ
How much does a bathroom renovation cost in Bali?
How long does a bathroom take?
Do you really waterproof properly?
Can you build an open-air or outdoor bathroom?
Renovation Coverage in Bali
Bathroom Leaking or Dated?
Send photos of the bathroom on WhatsApp — you will hear from us whether it needs a retile or a full re-waterproof, and quote either way.
Get a Bathroom Quote