Vetotop UC366

The substrate must be clean, dry, and free from contaminants such as dirt, oil, grease, existing coatings, and surface treatments. Remove all dust, loose, and friable materials thoroughly before application, preferably by vacuum. Suitable preparation methods include light grit blasting, surface grinding, or similar techniques to achieve a sound, rough surface profile.

Any spalled, fractured or defected asphalt and concrete surface must be repaired to allow Vetotop UC366 to bond effectively to sound, monolithic surfaces. Use an epoxy mortar from the Vetorep ER range to repair all necessary areas before applying. 

New concrete surfaces must have a minimum compressive strength of 25 N/mm2 and a pull-off strength of at least 1.5 N/mm2. Concrete must be at least 28 days old and have a moisture content of 5-6% before application. 

If in doubt, conduct a test application to confirm suitability

Priming is essential on highly porous substrates prior to the application of Vetotop UC366 to ensure a smooth surface and effective adhesion. A suitable primer from the Vetoprime EP range is recommended. Depending on the substrate, use Vetoprime EP491 as a film-forming primer or Vetoprime EP490 as a penetrating primer to seal pores and prevent moisture interference from asphalt or concrete substrates. 

To prepare, pour the entire contents of the hardener into the base container. Mix thoroughly using a slow-speed mixer. Apply the primer as a thin, continuous film using a roller or stiff brush, ensuring it is worked well into the substrate. Avoid pooling or excessive application. Allow the primer to achieve a tack-free state before applying the topcoat.

Vetotop UC366 is supplied as a two-component product consisting of Part A (base) and Part B (hardener) ready for on-site use. To ensure uniform consistency before application, inspect each container for any settlement or separation. Stir the coating thoroughly using a mechanical stirrer or hand mixer for consistent product dispersion. 

Mix the Part A (base) and Part B (hardener) components of Vetotop UC366 using a slow-speed (approximately 400 rpm) drill fitted with a spiral mixing head. Move the mixer around the pail to ensure thorough mixing and scrape the sides and bottom of the container to avoid unmixed material. Once homogeneous, transfer the mixture into a clean pail and remix for an additional 30 seconds to ensure consistency.

Apply Vetotop UC366 evenly onto the prepared and primed surface using a short-nap roller or squeegee at the recommended coverage rate. Ensure uniform film thickness and avoid excessive build-up or ponding to achieve a smooth, consistent finish. Apply only to tack-free primer or intermediate coats and observe the recommended overcoating intervals to ensure optimum intercoat adhesion. The coating should not be exposed to water, chemicals, or heavy traffic until fully cured.

Vetotop UC366 is a fast-curing polyurethane top coat that achieves an initial drying time in approximately 1 hour under standard conditions (25°C and 50% RH). Curing time may vary depending on substrate temperature, ambient temperature, humidity, and ventilation. For optimum performance, apply at temperatures between 10°C and 35°C, ensuring the substrate is dry and at least 3°C above the dew point. Allow the coating to fully cure before exposure to heavy traffic, chemicals, or mechanical loading.

All tools and application equipment should be cleaned immediately after use with Vetonit Solvent XX400. Hardened or cured material can only be removed by mechanical means.