Design Criteria
Vetotop EC498 is designed to be a hard wearing two coat application on cementitious substrates. The applied product will be resistant to water as well as a wide range of chemicals.
Priming
Priming is not normally required provided the substrate is sound, prepared and good quality non porous concrete. However, If concrete surface is porous, or w/c ratio is >0.5 it is recommended to use Vetoprime EP491 as a film-forming primer or EP490 as a penetrating primer for porous substrates.
Vetoprime EP491 should be mixed in the proportions supplied. Add the entire contents of the hardener can to the base can. When thoroughly mixed, preferably using a slow speed mixer, the primer should be applied in a thin, continuous film using rollers or stiff brushes. Work the primer well into the surface of the concrete taking care to avoid ponding or over application. The primer should be left to achieve a tack-free condition before applying the top coat.
Mixing Vetotop EC498
In a separate mixing vessel, use a slow speed mixer to mix the base, hardener for 3 minutes. Mix these components in the quantities supplied taking care to ensure all containers are scraped clean. Do not add solvent thinners at any time.
Application
The application and cure temperature must be above 15°C. The first coat of Vetotop EC498 should be laid using a short haired lamb wool roller, or gauged squeegee to achieve a continuous coating. Ensure that loose hairs on the roller are removed before use. A minimum film thickness of 200 microns per coat should be applied for flooring system (this can be increased where specifications demand). The top coat can be applied in the same manner within 8 to 24 hours of the application of the top coat.
Expansion Joints
Expansion joints in the existing substrate must be retained and continued through the Vetotop EC498 topping. Saveto have a range of joint sealants specifically designed for flooring (see Vetoflex PS781 and Vetoflex PS782 product data sheets).
Cleaning
Tools and equipment should be cleaned with Vetonit Solvent XX400 immediately after use.
