Eagle Desmopol DW is a two-component liquid made up of 100% solids aromatic thixotropic polyurethane, which once catalyzed forms a continuous elastic membrane, without any joints, overlapping, or any integrated mesh needs. Its properties make it an excellent choice for achieving air-tightness and perfect waterproofing in potable water contact situations. It is applied manually, using a trowel or by roller

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• Features & Benefits
• Surface Preparation
• Application
• Repair & Overlaps

Features & Benefits

• Polyurethane liquid membrane for waterproofing or coating potable water for human consumption concrete tanks
• Elastic, aromatic, thixotropic and wear-resistant membrane that, once cured, offers great stability, durability, and waterproof performance
• Not exposed to UV rays
• Can be applied for drinking water tanks (WRAS approval under BS-6920 "Suitability of non-metallic products for use in contact with water intended for human consumption with regards to their effect on the quality of the water", NSF International Laboratories)
• Thanks to its versatility Desmopol DW adapts to any surface, making it the ideal product for application on uneven surfaces and in areas of any shape, whether curved or squared
• No surface reinforcement required, only singular points of encounters with other building elements
• Applied in coats of 1 mm.(40 mils) of thickness each; recommended minimum total thickness, 1,5 mm.(60 mils) ( total consumption: ±2,05 kg/m2 )
• Applying Desmopol DW saves in seals and any other kind of joins, as the finish is uniform and makes up a single layer, providing a surface with optimum maintenance and cleaning properties
• resists water temperatures between -20ºC and +60ºC. (maximum temperature +80ºC for 24 hours only)
• Repairs are easily localizable and are easy to carry out

Surface Preparation

For application to concrete. For other surfaces please contact our technical department.

• Concrete should be completely cured (concrete curing takes 28 days) or, in any case, the maximum level of humidity allowed for the substrate should be verified, depending on the primer used
• Any concrete latencies or release agents should be eliminated and an open-pore surface achieved by grit blasting, milling, or sanding
• Any cracks and damaged areas must be repaired using an epoxy mortar
• Mastic PU must be used on fissures or small cracks in the surface
• Existing joints or seals: remove the old material, clean up and fill with Mastic PU and Tecnoband 100 matting
• Clean up well and eliminate all contaminants from the elements, such as dust or chippings, using dry methods preferably
• Apply primer resin in the conditions and the parameters indicated in the technical specifications for these products

Application

• Open the Desmopol DW metal tins (comp A. and comp B.), mix and stir up to homogenize using an electric mixer, medium speed
• Apply the first coat using a short hair roller, maximum thickness 1,0 mm, (applying the material without dilution)
• Wait for it to dry completely (depends on weather conditions), about 5~6 hours
• Apply the next coat in the same way as above
• Repeat this process as many times as necessary to achieve the desired or recommended thickness
• Two days after finishing application, clean up the surface using a neutral soap
• Wait until 6 days since application to fill with water

Repairs & Overlaps

In cases where the recoat time (24-48 hours) has been exceeded:

• Sanding strip longitudinal overlap of about 20~30 cm. wide
• Cleaning (vacuuming) of waste generated (powder, dust...) or existing dust; if it's possible, do not use water, and if it's used, check the support humidity value; ketones applicability based solvents for conducting this type of surface cleaning
• Apply a thin layer (100-150 g/m²) of polyurethane resin Primer PU-1050 or Primer EPw-1070
• Lightly spread silica sand over wet primer
• Wait for it to dry completely
• Apply Desmopol DW