PUR W-2K

Two-component, solvent-free, polyurethane-based, elastic waterproofing material

A two-component, solvent-free, polyurethane-based waterproofing and coating material used for insulating and coating pools and water tanks.

Areas of Use

• Waterproofing coatings for pools and water tanks
• Drinking water distribution channels and ditches
• Surfaces in direct contact with drinking water

Advantages

• High bond strength after initial and final drying.
• Excellent chemical resistance; withstands various solvents and acids.
• Solvent-free.
• On first application the product's elasticity is very high; within 7 days it gradually decreases to its final level, but the material never loses its elasticity.
• Can be applied with reinforcement mesh.
• Adheres to metal, stone, wood and concrete surfaces, providing a good coating.
• UV resistant.
• Suitable for waterproofing underfloor-heated floors.

Consumption	Total theoretical consumption is 1.5-1.60 kg/m².
Shelf Life	Can be stored for 6 months in its unopened original packaging, in dry conditions at temperatures between +5°C and +25°C. Opened packages must be used immediately.

Application

During application of PUR W-2K insulation material, the substrate must be a clean, dry, oil-free and repaired surface. A primer must first be applied to the substrate. When choosing the primer, it must be determined whether the substrate is exposed to moisture. For substrates exposed to very slight moisture, PUR PRIMER-2K moisture-tolerant polyurethane primer or EPOXY PRIMER W should be preferred. On normal dry substrates, PUR PRIMER-1K single-component floor primer should be applied. After priming is finished and the substrate has dried, application of the insulation material can begin. The product must be mixed thoroughly before use and worked well into the substrate with a roller or brush. Although initial drying takes place within 4 hours, full drying occurs after 24 hours. Drying time may vary depending on temperature and humidity. Chamfer points can be coated together with the main area. Full chemical resistance is attained after 7 days. On surfaces that will later be covered with ceramic tiles, once the application is complete a thin coat of PUR W-2K is applied and, while the layer is still fresh, sieved dry sand is broadcast over the surface (as much as the surface can take). After drying, the unbonded aggregate is removed, and ceramic tiles can be applied to the roughened surface thus obtained using a cement-based adhesive.

Technical Properties

Colour	White-Grey-Beige-Blue-Green-Brick red
Density	1,45 ± 0,01 g/cm³
Mixing ratio	4 parts: 1 part
Pot life	20-30 minutes (air temperature, substrate temperature and ambient humidity affect the drying time)
Consumption	0.45-0.6 kg/m² (per coat)
Mechanical resistance	After 12 hours
Full cure	7 days
Application temperature	Between +5°C and +30°C
Storage temperature	Between +5°C and +30°C
Heat resistance	Between -20°C and +80°C