EPOXYPRIMER-500 is a two-component, water-based epoxy system. It provides high hardness and abrasion resistance. It can be applied on dry or slightly damp substrates, without standing water. Certified according to EN 13813 and classified as SR-B2,0. CE marked. EPOXYPRIMER-500 has received an Environmental Product Declaration (EPD) following an assessment of its life-cycle environmental impacts. Registration No: S-P-09185, The International EPD System.
EPOXYPRIMER-500 is used as a primer of ISOFLEX-PU 500 and other polyurethane systems, when applied on non-absorbent substrates or old waterproofing layers. It may also be used as a primer, as well as for preparing (with the addition of quartz sand) a repairing (filling) material for cement-based substrates, such as concrete or cement screeds, that will be covered with DUROFLOOR epoxy resins.
Substrate preparation
The substrates to be coated should be:
- Stable.
- Free of materials that might impair bonding, e.g. dust, loose particles, grease, etc.
- Protected from underneath moisture attack.
In addition, substrates should be prepared by brushing, grinding, milling, sandblasting, water blasting, shot blasting, etc., depending on their nature. Then, the surface should be well cleaned from dust with a high suction vacuum cleaner.
Mixing of the components
Components A (resin) and B (hardener) are packaged in two separate containers, having the correct predetermined mixing ratio by weight. The entire contents of component B is added to component A. The two components should be mixed for about 2-3 minutes with a low speed mixer (300 rpm), until the mixture becomes uniform. it is important to stir the mixture thoroughly near the sides and bottom of the container, to achieve uniform dispersion of the hardener. The addition of water (10-30% by weight) will then ensure that the mixture obtains the desired workability.
Application-Consumption
Depending on the application, EPOXYPRIMER-500 can be used in the following ways:
a) As a primer of ISOFLEX-PU 500
The substrate is primed with EPOXYPRIMER-500 thinned with water up to 30% by weight. The product is applied by brush or roller in one coat. Consumption: 150-200 g/m2. Depending on the weather conditions, ISOFLEX-PU 500 is applied within 24-48 hours from priming, as soon as the moisture content falls below 4%.
b) As a primer of epoxy resins
The substrate is primed with EPOXYPRIMER-500, thinned with water up to 30% by weight. The product is applied by brush or roller in one coat. Consumptio: 150-200 g/m2. After the primer has dried, any existing imperfections (cracks, holes) should be filled with EPOXYPRIMER 500, mixed with quartz sand of 0-0.4 mm particle size (or Q35) in the ratio 1:2 up to 1:3 by weight. The qualified system DUROFLOOR is applied within 24-48 hours from priming and just when the moisture content of the EPOXYPRIMER-500 layer remains over 4% after 48 hours, the same procedure should be followed. In case DUROFLOOR is to be applied beyond the above time limits, quartz sand of 0.3-0.8 mm particle size should be spread on the surface, while the primer is still fresh, in order to ensure good bonding. After the primer has hardened, any loose grains should be removed with a high suction vacumm cleaner.
