Damp Proof Membrane Paint

Substrate Preparation

The concrete or suitably approved cementitious semi dry polymer modified / proprietary screed substrate must be prepared by vacuum assisted shot blasting, rough surface profile cement-based laitance can be additionally removed by localised diamond grinding.
PR Epoxy DPM can be applied to the surface directly if the substrate does not exceed 97% RH (Relative Humidity). The surface should be visibly dry and free of any surface water, additionally the mechanically prepared substrate must be clean and free of dust and loose debris. All traces of contaminants such as grease, oils, fats, paint, chemicals, algae, and laitance related residues must be removed during the mechanical substrate preparation process.
The substrate surface should have an adhesive bond strength of 1.5 N/mm2
as a minimum requirement. Cracking or identified hollowness in the substrate should be appropriately remediated using suitably approved Palatine Paints repair products before commencing with the application.

Application Instructions

PR Epoxy DPM is manufactured in two component containers in the exact stoichiometric mixing ratio. The entire contents of the B Component
container are emptied into the A Component container. Both components are mechanically mixed using a suitable electric drill and paddle / spinner until they are homogenously combined (2 – 3 minutes).The inclusion of air in the mixing process must be avoided by keeping the mixing head fully submerged in the combined A and B components until mixing is completed.

After emptying the mixed product into a clean and dry container, the product is applied to the mechanically prepared substrate using a rubber squeegee, care must be taken during application to provide a fully coated and closed film forming surface. A second coat is to be applied after a minimum cure time of 8 hours has elapsed at 20°C. Both first and second coats of the wet surface of the squeegee applied primer is then rolled with a short piler mohair roller to facilitate the even closed surface finish of the applied primer. To improve the floor finish adhesion the second coat of the wet surface of the primer is scattered lightly with dry quartz / silica sand (52 and 60 mesh dry silica sand or natural quartz 0.3 – 0.8 mm) at an approximate consumption rate of approximately 0.8 – 1.0 kg / m2.

Cleaning & MaintenanceCleaning & Maintenance

For the long-term maintenance of the properties of polymer flooring materials, a regular cleaning and care programme is recommended.