Zinsser Singapore

The waterproof layer

WaterTite LX: the quiet layer that stops the wall from weeping

Before any colour, before any sheen, some walls need physics. WaterTite LX is the water-based hydrostatic waterproofer that cures into a flexible film — vapour escapes, liquid water does not enter. Bathrooms, planter walls, aircon ledges, basement concrete: this is the layer that makes the topcoat honest.

Singapore planter wall sealed with Zinsser WaterTite LX waterproof coating

What it solves

Most Singapore “leak” complaints are not leaks. They are hydrostatic pressure pushing moisture through concrete from the other side of the wall — a planter, a balcony, a neighbour's shower. A standard interior paint, even an anti-mould one, eventually blisters because the substrate is wet beneath the film.

WaterTite LX is the layer that stops that. It cures into a flexible membrane that passes vapour but blocks liquid water — the right physics for a tropical wet wall. You do not want to trap moisture inside the concrete; you want to stop it leaving through the painted face.

The honest spec sheet

PropertyValue
Base chemistryWater-based, hydrostatic-rated
Film behaviourVapour-breathable, liquid-blocking
SubstratesConcrete, masonry, stucco, brick
Typical coverage3–4 m²/L at recommended wet-film thickness
Touch dry / recoat2–3 hrs / 4–6 hrs
Full cure7 days before tiling or fixture reinstall

Where it belongs

  • Bathroom wall–floor junctions and shower-back substrates, before tile.
  • Condo planter walls and roof gardens where the inside face is a living wall.
  • Basement concrete and storage rooms below grade.
  • Aircon ledge perimeters with chronic condensate exposure.

How the layer stack works

  1. Surface prep — scrape blistered paint, neutralise efflorescence, fill hairlines.
  2. A sealer coat where the substrate is dusty or chalky.
  3. Full-coverage WaterTite LX at the documented wet-film thickness.
  4. Cure window — minimum 24 hours before overcoat, 7 days before tile.
  5. Perma-White Interior topcoat in your chosen Atelier shade on the visible faces.

Sourcing WaterTite LX

WaterTite LX is a specialist coating we source to order rather than stock on the shelf. Tell us the wall and we will confirm suitability and current pricing — send an enquiry. The visible half of the system, Perma-White Interior, is in the shop and ships immediately.

Common questions

Where is WaterTite LX used in a Singapore home?

Bathroom wall–floor junctions and shower-back substrates; condo planter walls and roof gardens; basement concrete; aircon ledge perimeters with chronic condensate exposure. Anywhere liquid water, not just vapour, is the failure mode.

Is it a topcoat or a substrate layer?

A substrate layer. WaterTite LX goes on first and cures; Perma-White interior goes over it on visible wall faces. The waterproofer does the physics; the interior film does the look.

How long does the cure take in tropical humidity?

Touch-dry in two to three hours, recoatable in four to six, fully cured at seven days. Wet-zone work should be scheduled so the substrate is dry before tiling or fixtures return.

The Atelier, delivered

choose the shade, we mix the tin.

Every Atelier shade is tinted to order into Zinsser Perma-White and delivered anywhere in Singapore for a flat S$20. White ships immediately; tinted tins leave the workshop in two to three working days.