Description
Planiseal 88 is a one-component, normal-setting osmotic cementitious mortar for protecting and waterproofing concrete and masonry, rated safe for contact with drinking water. That drinking-water rating sets it apart from a general waterproofing mortar — it’s specified for reservoirs, water tanks and pipes carrying potable water, not just decorative or structural waterproofing.
Its osmotic action lets it work against negative water pressure up to 1 atmosphere, which is the genuinely difficult case: waterproofing a below-grade wall or tank from the inside face while water pressure pushes from the outside. Conforming to EN 1504-2 coating (C) requirements under the MC and IR principles gives it a real compliance basis for structural concrete protection work, not just a marketing claim.
Technical Specifications
| Consistency / colour | Powder, grey |
|---|---|
| Mixing water | 21-23% (4.2-4.6L per 20kg bag) |
| Application temperature range | +5°C to +35°C |
| In-service temperature range | -30°C to +90°C |
| Pot life of mix | Approx. 1 hour |
| Successive coat | After 5 hours, no later than 24 hours |
| Waiting time before service | 7 days |
| Consumption | Approx. 1.5 kg/m² per mm of thickness |
| Packaging | 20kg bags |
| Compliance | EN 1504-2 coating (C), MC and IR principles |
Where to Use
- Waterproofing drinking-water reservoirs, tanks and pipes
- Interior and exterior cellar walls and damp areas
- Swimming pools and lift-rooms
- Repairing underground masonry under negative water pressure up to 1 atmosphere
How to Apply
- Mix — combine with 21-23% mixing water per 20kg bag to a fluid, trowelable consistency.
- Apply the first coat — by brush for the first coat if trowel application is planned for subsequent coats.
- Apply successive coats — after 5 hours and no later than 24 hours from the previous coat.
- Allow to cure — wait 7 days before putting the surface into service.
Important Notes
- Contains cement, which can cause irritant alkaline reactions on contact with sweat or skin — wear protective gloves and goggles.
- Can be removed from tools with water before it hardens; once hardened, cleaning is mechanical only.
- Stable for up to 12 months in original packaging, stored dry and elevated.
- For professional use only.
Waterproofing that’s rated safe for drinking water is a materially different bar than general waterproofing — coatings and mortars used elsewhere in construction often can’t be specified for potable water infrastructure at all, since anything that leaches into the water supply is a genuine health and compliance issue. Planiseal 88’s drinking-water rating means the same product doing the waterproofing job also clears that separate hurdle, which is why it’s positioned specifically for reservoirs, tanks and pipes carrying water people will actually drink, not just general below-grade damp-proofing.
