Flowprime DPM - Damp Proof Membrane Primer
Vendor: Virtus Resins
Flowprime DPM is a two-component solvent-free liquid applied surface damp proof membrane and residual moisture suppressant. After curing, Flowprime DPM provides a surface membrane with excellent adhesion to damp concrete and polymer modified sand/cement screeds. Hygrometer readings up to 98% RH as measured in accordance with BS 8203:2001 can be accommodated. Flowprime DPM is available in red and yellow as a visual aid for application and coverage.
Flowprime DPM has been designed for use as a coating over cementitious surfaces which posses high levels of residual moisture or where an integral DPM is not present or not effective. This practice should only be adopted subject to a survey confirming adequate underlying ground stability. Moisture testing should be carried out in accordance with BS 8203.
Flowprime DPM permits early overlaying with vinyl, carpets and resin based products without the conventional “drying out” period being observed. This product is not suitable for use over under-floor heating systems.
450 microns (two coat system)
Flowprime DPM 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. Care should be taken to ensure that any material adhering to the sides and bottom of the mixing vessel is thoroughly mixed in otherwise uncured patches may result.
Important: Both liquids are pre-weighed and designed to be mixed together in their entirety. It is essential that the full amounts are mixed together and until homogenous to ensure the product cures correctly and to the desired finish.
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 each coat should be no less than 200 microns in thickness which should be checked using a wet film thickness gauge. Records of these measurements should be kept. Apply a second coat once cured at right angles to the first. It is essential that Flowprime DPM 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 Flowprime DPM.
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.
Available in Clear. Red and Yellow can be made to order subject to availability.
Flowprime Technical Data Sheet
Safety Data Sheets