Surface Preparation

• The substrate must be sound, stable, clean and free from dust, loose particles, oil, grease, algae, fungus and other contaminants that may adversely affect adhesion.
• Remove all weak, loose or poorly bonded material from the substrate by suitable mechanical means and ensure that the surface is adequately prepared before commencing application.
• Existing cracks, joints, surface undulations and other visible defects should be suitably repaired using compatible repair materials before application of the waterproofing system.
• Ensure that the substrate has a suitable surface profile and is free from standing water. The surface should be allowed to attain suitable conditions before priming.

Priming

• Mix component A and B of hahne PrimeStick-WEP thoroughly before application to ensure uniform consistency.
• Apply a single, uniform coat of hahne PrimeStick-WEP over the prepared substrate using a suitable brush or roller.
• Ensure complete and uniform coverage, particularly over porous areas, corners and other locations where additional penetration may be required.
• Allow the primer to dry completely before proceeding with the application of hahne PU-XSEAL ULTRA. The primer should not remain wet or tacky at the time of membrane application.

Application

• Stir hahne PU-XSEAL ULTRA thoroughly before application to ensure a uniform and homogeneous material.
• Apply hahne PU-XSEAL ULTRA using a suitable brush or roller in two uniform coats, maintaining the recommended consumption for achieving the required dry film thickness.
• Apply the first coat uniformly over the primed substrate, ensuring that the material is evenly distributed without excessive build-up, pinholes or missed areas.
• Where reinforcement is specified as part of the waterproofing system, immediately embed the recommended non-woven polyester reinforcement into the first coat while the material is still wet. Use a suitable roller to ensure proper wetting of the reinforcement and to remove trapped air or wrinkles.
• Allow the first coat to dry adequately before applying the second coat. The second coat should be applied uniformly and preferably in a direction perpendicular to the first coat to ensure consistent coverage.
• Ensure that the required total dry film thickness is achieved after completion of the specified coats. Additional material may be required depending on substrate porosity, surface profile and site conditions.
• Protect the freshly applied coating from rain, water, dust and other contamination until it has sufficiently dried.
• Avoid application when the ambient or substrate temperature is below 5°C or above 35°C, and do not apply during foggy conditions.

Technical Specifications