Vetotop EPU497

All surfaces intended for application with Vetotop EPU497 must be clean and possess an open capillary system. Remove laitance, dirt, grease, and other loose materials using high-pressure water jetting or wet sandblasting. Defective concrete, such as cracks and honeycombs, must be identified and repaired before application. Steel surfaces must be free of excessive rust scale, pollution fallout, dirt, grease, surface chemicals, or any other foreign contaminants prior to blast cleaning.

Priming is not required for good-quality non-porous concrete. If the concrete surface is porous or if there is doubt about the concrete surface quality, use Vetoprime EP491 or Vetoprime EP490. All metal surfaces should be coated immediately with primer after preparation.

Vetoprime EP491 or Vetoprime EP490 should be mixed in the proportions supplied. Add the entire contents of the hardener container to the base container. When thoroughly mixed, preferably using a slow-speed mixer, apply the primer in a thin, continuous film using rollers or stiff brushes. Work the primer well into the concrete surface, taking care to avoid ponding or over-application. Leave the primer to achieve a tack-free condition before applying the topcoat.

In a separate mixing vessel, use a slow-speed mixer to mix the base and hardener for 3 minutes. Ensure all components are mixed in the quantities supplied and that all containers are scraped clean. Do not add solvent thinners at any time.

Apply Vetotop EPU497 by brush, roller, or airless spray to the surface. A minimum of two coats is generally recommended to ensure a complete and uninterrupted coating. For brush/roller application, the mixed material should be promptly applied to achieve a continuous coating. The first coat should be applied to achieve a uniform coating with a wet film thickness of at least 200 microns and allowed to dry for a minimum of 4 hours at 35°C before applying the second coat. The second coat should be applied after a minimum of 4 hours at 35°C from the application of the first coat, following the same guidelines to achieve a wet film thickness of not less than 200 microns. In cases where large areas need to be coated, spray application is advisable.

Clean all tools employed to apply Vetotop EPU497 with Vetonit Solvent XX400 before it hardens; otherwise, mechanical means are needed.

Vetotop EPU497 is formulated for application to clean sound substrates of steel or concrete; and where it can be protected from contact with water for the first 24 hours after application as discoloration could occur.

For cold weather working (down to 5°C), it is recommended that materials are stored in a heated building and only removed immediately before use. Accelerated heating methods are not to be utilized under any circumstances.