Liquid waterproofing is often discussed as though it were one technology. In practice, the product only becomes a system when its chemistry, substrate requirements, reinforcement, details, exposure and—below ground—the direction of hydrostatic pressure are considered together.
Exposed liquid membranes.
Six products form the core roof, balcony and trafficked-floor selection. Their most important difference is not colour or packaging—it is the condition and use in which each product is expected to perform.
WINKLER ONE®
Damp or wet substrates · 0°C to +45°CThe main choice where residual moisture, uncertain drying conditions or a wider application-temperature window make conventional water-based systems difficult to use.
OPEN MATERIAL →ONE® VERTICAL
Vertical details · damp or wet substratesA thixotropic version developed for vertical applications, complex profiles and details where stability on the surface is as important as waterproofing continuity.
OPEN MATERIAL →WINGUM PLUS® H₂O RAPID
Prepared dry substrates · +5°C to +35°CA fibre-reinforced system for roofs and larger areas where fast rain resistance is important, but substrate moisture and application conditions remain tightly controlled.
OPEN MATERIAL →2021
Prepared dry substrates · exposed finishA water-based, UV-resistant liquid membrane used where a smooth continuous finish is required over a correctly prepared and dry substrate.
OPEN MATERIAL →2021 FIBER
Prepared dry substrates · distributed reinforcementThe fibre-reinforced development of 2021, providing reinforcement throughout the coating for substrates exposed to stress or vibration.
OPEN MATERIAL →ONE® FLOORING
Damp or wet substrates · vehicle + industrial trafficA coloured, UV-resistant ONE-system membrane for waterproofing and protecting concrete, tiled and mechanically sound asphalt floors exposed to vehicle or industrial traffic. Joints and movement still require a dedicated detail strategy.
OPEN MATERIAL →Do not select by habit.
| System | Substrate starting point | Primary role | Key limitation to check |
|---|---|---|---|
| ONE® | Damp, very humid or wet | Exposed high-performance waterproofing | Substrate strength, contamination and detail design |
| ONE® VERTICAL | Damp or wet vertical surfaces | Vertical and complex-profile waterproofing | Not a substitute for correct void and joint repair |
| H₂O RAPID | Prepared dry surface | Fast rain-resistant roof membrane | Moisture, weather window and reinforcement requirements |
| 2021 | Prepared dry surface | Smooth exposed elastomeric membrane | Hidden moisture and correct film build |
| 2021 FIBER | Prepared dry surface | Fibre-reinforced exposed membrane | Fibres do not remove the need to resolve joints |
| ONE® FLOORING | Damp, very humid or wet floor substrate | Waterproofing + drive-over wearing protection | Substrate strength, joints, contamination and traffic demand |
Waterproofing, protection and treatment are not the same.
These products sit beside the core membranes but perform different jobs in the wider building-envelope strategy.
WINGRIP® BITUMINOSO
Waterproofing + adhesion-promoting layerA single-component polymer-bitumen membrane used beneath tiled finishes on terraces, balconies, bathrooms and shower areas. It is part of the covered build-up—not an exposed roof finish.
OPEN MATERIAL →WIN BITUROOF
Levelling + slope-restoration pasteA ready-to-use bituminous paste for levelling aged bituminous membranes, restoring local falls and forming horizontal-to-vertical connection shells before the new waterproofing layer. It is a preparation product—not the final membrane.
OPEN MATERIAL →ECOIMPRIMER
Water-based anti-dust + adhesion treatmentA professional bituminous primer used to control dust and promote adhesion before laying heat-applied bitumen-polymer membranes. It is not a universal primer for every liquid waterproofing system.
OPEN MATERIAL →2000 PLUS
Protective coating for aged bituminous membranesAn elastomeric protective coating for existing oxidised bituminous membranes. Its role is protection and service-life extension; substrate age and preparation remain critical.
OPEN MATERIAL →ECOSILVERALL
Water-based aluminium coatingA flexible aluminium protective coating for bituminous coverings. It provides a bright protective finish but should not be confused with the primary waterproofing membrane beneath it.
OPEN MATERIAL →SKERMO TERRAZZE
Deep-penetrating, non-film-forming protectionA transparent treatment for tiled balconies and terraces that penetrates through grout lines without changing the appearance. It does not replace movement-joint repair or bridge active cracks.
OPEN MATERIAL →Which side of the water pressure?
External and internal basement waterproofing solve the problem from opposite faces of the structure. They are not interchangeable routes.
Stop water before it enters the structure.
Accessible external face · foundations + earth-retaining wallsA high-build, trowel- or spray-applied waterproofing system made with highly elastic resins and puncture-resistant additives. It is used on counter-ground walls, foundations and concrete structures, including vapour-barrier layers below foundation build-ups, subject to the approved substrate and detail design.
OPEN MATERIAL →Control water from the accessible internal face.
External face inaccessible · basements + underground roomsThe internal route must resist water pressure acting through the structure. Active ingress, damaged backgrounds and damp substrates are treated as separate conditions using BLOCKWATER, WINPLASTER and/or WINFIX WET in a project-specific sequence.
The membrane is installed on the water-entry side, helping prevent the structure from becoming saturated.
The treatment must remain bonded while water pressure acts through the wall or slab from behind.
Stop, rebuild, then select the control layer.
An active leak, a damaged wall, counter-pressure moisture and a damp substrate are four different conditions. The project build-up may use some—not automatically all—of these materials.
BLOCKWATER
Ultra-rapid cement mortar for stopping local active water ingress, including leakage under pressure. It resolves the active point before the wider waterproofing build-up is completed.
OPEN MATERIAL →WINPLASTER
A single-component waterproof, fibre-reinforced plaster for forming thicker waterproof baseboards and treating concrete or plaster walls in layers up to 20–30 mm.
OPEN MATERIAL →WINPOX CEMENT TIXO
A three-component thixotropic epoxy-cement mortar for humid surfaces affected by counter-pressure moisture. It can waterproof underground rooms, lift pits, floors and concrete pools while providing a vapour-barrier or resin-system base where specified.
OPEN MATERIAL →WINFIX WET
A two-component thixotropic epoxy-cement system formulated to cure on moist cementitious substrates. It creates a controlled base for subsequent resin finishes on underground rooms, lift pits, pools and floors where substrate moisture must be managed.
OPEN MATERIAL →SCUDO SYSTEM® is the external positive-side route. Internally, BLOCKWATER stops local active ingress, WINPLASTER rebuilds and waterproofs the background, WINPOX CEMENT TIXO treats counter-pressure moisture, and WINFIX WET creates a two-component epoxy-cement base on moist cementitious substrates. None should be treated as a direct one-for-one alternative.
Most waterproofing failures begin at the details.
The correct accessory depends on whether the detail is a corner, penetration, movement joint, wall-to-slab junction, reinforcement zone or local bituminous repair.
Self-adhesive butyl band for corners, changes in direction and local detailing.
OPEN MATERIAL →Preformed butyl pad for outlets, pipes and through-elements.
OPEN MATERIAL →Flexible band used to maintain waterproofing continuity across joints.
OPEN MATERIAL →Elastic sealant used as part of correctly formed joint details.
OPEN MATERIAL →Reinforcing fabric developed for the ONE system where movement or system design requires reinforcement.
OPEN MATERIAL →Heat-stabilised reinforcement used with compatible H₂O and 2021 system build-ups.
OPEN MATERIAL →Elastic bituminous adhesive sealant for local membrane repairs, laps, gutters, flashings and roof penetrations.
OPEN MATERIAL →Product knowledge is useful. System judgement is the real value.
Match the chemistry and build-up to substrate, moisture, exposure and intended use.
Coordinate joints, outlets, penetrations, upstands, reinforcement and terminations.
Translate the technical data sheet into a controlled and repeatable site method.
Review preparation, application conditions, continuity and issues before warranty stages.
Two apartment-block roofs refurbished with Winkler H₂O.
The 680 m² and 750 m² roofs retained their existing torch-on membranes beneath the liquid refurbishment. Direct falls carried water to through-roof outlets and downpipes, and a permanent cable lifeline was installed after completion for future maintenance access.
Read the project record →This page covers the Winkler products I supply and support; it is not the complete catalogue. Below-ground work also requires checks on the water table, pressure direction, joints, drainage, structural movement and external access. Final selection should follow a site assessment and the current technical data for the chosen system.