BIF EP Prime-100
BIF EP Prime-100 is a two-component solvent-free liquid applied primer. After curing, Resuprime ST provides a sealed surface with excellent adhesion to dry concrete and polymer modified sand/cement screeds. Hygrometer readings should be below 75% RH as measured in accordance with BS 8203:2001 to use this primer.
BIF EP Prime-100 is a primer for use as a binder to be mixed with kiln dried sand and aggregate to form epoxy screeds, renders or detailing mortar.
The concrete substrate must be sound and of sufficient compressive strength (minimum 25 N/mm2 ) with a minimum pull off strength of 1.5 N/mm2 . Inadequate preparation will lead to loss of adhesion and potential failure. In coatings or flow-applied systems, there is a tendency for the finish to mirror imperfections in the substrate. Grinding or light vacuum contained shotblasting is therefore preferred.
In new construction, we recommend Resuprime MVT (a damp-proof membrane) unless surfaces are sufficiently dry and free from construction moisture.
Resuprime ST is a two-component product. Fully drain the contents of the hardener component into the lightly coloured resin component and mix thoroughly with a slow speed electric stirrer fitted with a spiral paddle, for a minimum of 3 minutes until homogeneous.
Ideal ambient and substrate temperature is 15 - 25 °C to achieve best results. Localised heating or cooling equipment may be required outside these parameters. The substrate and uncured floor must be kept at least 3° C above the dew point to reduce the risk of condensation or blooming on the surface for at least 48 hours after application.
Apply evenly using a notched trowel (1.5 mm x 5 mm V shaped) and flatten out the ridges with a pre-wetted-out short pile roller whilst still wet. Do not exceed the coverage rate of 4 m2 /kg under any circumstances.
It is essential that Resuprime ST is pin-hole free and continuous with absolutely no gaps or cavities. If this is not the case, an additional coat should be applied. If a sand scatter is required for key or profile, this should be applied to a third coat of Resuprime ST. Estimating 4 m2 /kg/coat at 225 microns/per coat. Coverage will be reduced by rough, porous substrates and more material may be required to achieve the minimum wet film thickness requirements.