Weber primer 401 Water based acrylic primer for interior and exterior applications,

Product Details

Product description weberprim Epox 501  is a transparent, two component epoxy primer with excellent surface wetting and penetrating properties. Typical application weberprim Epox 501 is used as a universal primer in waterproofing, sealing and floor coating applications on absorbent and non-absorbent surfaces. Features and benefits • • • • • • Easy to mix and apply with a lambswool  roller, rubber wiper or brush Excellent adhesion to porous and non-porous substrates Seals concrete pores Can be diluted with water Stops dust generation VOC free, no obnoxious smell Method of application Surface requirement and preparation • • weberprim Epox 501 Concrete substrate must be sound of sufficient compressive strength of min 20 MPa and pull off strength of 1.5 N/mm. The moisture in the concrete floor must be less than 5% with no chance of any rising moisture or potential osmosis problems arising from the concrete. Surface preparation • Substrate should be sound, levelled and clean without any bond inhibiting substance, like dust, dirt, grease, oil, laitance or any loose particles to ensure maximum bonding between substrate and subsequent coating system. • • Concrete substrates must be prepared mechanically using rotary grinding equipment to remove laitance and achieve rough surface profile. All dust on floor must be removed ideally by vacuuming prior to primer application. New concrete substrate • Floor should be at least 28 days old and have a moisture content of less than 5% before proceeding with primer application. Laitance and deposits on new concrete f loors must be removed mechanically using abrasive blast cleaning / scarifying / rotary grinding equipment to achieve a rough textured surface. Old concrete substrate • • • • • • Concrete surface must be free from any bond inhibiting surface like dirt, oil, grease, wax, fatty acids, coatings, any surface treatments, etc. If contaminated with oil, grease, wax, fatty acids the surface must be treated with alkaline / detergent scrubbing, steam cleaning or chemical cleaning. Acids and alkalis can be removed by neutralizing to form a water soluble salt and then high pressure water cleaning and mopping it off to dry state. Hydrophobic contaminants can be identified by a simple water drop test. Other contaminants can be identified by pH. In the areas where the contaminants cannot be removed, complete removal and replacement of the contaminated surface is typically considered Weak concrete must be removed and surface defects such as blowholes, excess porosity, voids and must be fully exposed and suitably treated to achieve smooth uniform surface. High spots must be removed by grinding.