For ease of use we have divided Primers into two groups i.e. those for Dry Concrete and those for Moist Concrete.
Each product carries a very brief description, with the Data Sheet giving detailed technical specification and guides on the use of the product and its application.
Primers - Dry Concrete
KLB EP 30 is an unfilled, low viscosity and colourless epoxy-resin for producing primers, scratch coats and thick-coat smoothing compounds. EP 30 has excellent adhesion properties, can be highly filled and yet has good application properties. EP 30 has a good, consistent cure and excellent bond to mineral substrates. Broadcasting the surface with quartz sand, 0.3 / 0.8 grade, to provide mechanical bond is highly recommended.
KLB EP 50 is a high quality, solvent-free, 2-component epoxy resin for universal application. EP 50 can be used as a primer, scratch-coat or levelling mortar in renovation and new-build work. Due to its low viscosity and good surface
wetting properties, the resin penetrates well into the substrate and provides a high strength base for subsequent coating materials.
EP 50 has, for many years, been our first recommendation for substrate preparation as it works reliably under all the various construction conditions.
KLB EP 51 RAPID S is a solvent-free, 2-component epoxy resin that cures at low temperatures and, at normal temperatures, cures rapidly. It is used as a primer and smoothing coat in cases where a fast coating installation is required.
EP 51 RAPID S can usually be over-coated after 2 - 4 hours and has, therefore, a great time advantage over other primers. The use of EP 51 RAPID S offers considerable time savings in small areas and in renovation work with short installation and setting times. EP 51 RAPID S cures reliably even at temperatures down to 0°C and this is a considerable advantage in the colder seasons of the year.
CRYSTAL CLEAR is a single pack water based polyurethane dispersion with an acrylic mix. It is completely non hazardous and as such is suitable for application in both internal and external applications and in small confined areas as well as larger, more exposed areas.
CRYSTAL CLEAR will adhere to most substrates and form to give a high gloss film. Once fully cured CRYSTAL CLEAR is hard wearing and offers good chemical resistance against a large number of aggressive chemicals.
CYSTAL CLEAR can be used on concrete, stone, brickwork, wood and most traditional building materials, as well as on aluminium, brass, copper bright work and some plastics.
Primers - Moist Concrete
KLB EP 52 is a solvent-free, 2-component epoxy resin that is formulated to have high resistance to moisture. EP 52 will bond to surface-dry damp substrates, suppresses the water content and achieves an exceptional bond. In combination
with the degreasing agent, PS 22, oil-contaminated surfaces can be cleaned and then primed. Due to its especially good penetration and bonding properties, the product is proven to be effective on poor quality substrates.
In particular, on substrates with inadequate strength, the bond-strength achieved can be significantly improved. Its medium viscosity makes the product suitable for use as a scratch-coat and also for use as a wet bonding agent for bonded screeds. The best adhesion is achieved on shot-blasted surfaces.
KLB EP 52 RAPID is a rapid setting, solvent-free, 2-component epoxy resin formulated to be extremely compatible with moisture. EP 52 RAPID will bond to matt-damp surfaces, displacing the water and providing exceptional adhesion. As a variant of the proven special resin primer EP 52, the product is rapid setting and combines good adhesion and wetting properties with early readiness for over-coating after only 4 - 6 hours.
It is suitable for use as a primer on problem substrates at temperatures from 5 °C. The product is primarily for use on concrete and cement screeds where there is a need for rapid setting and good adhesion. Its medium viscosity makes the product also suitable as a scratch coat and as a wet bonding agent for bonded screeds. With KLB EP 52 Rapid, excellent adhesion is achieved on shot-blasted steel.
KLB EP 727E TD