Hychem Hyclad E — Epoxy Polyurea Membrane

Prior to the application of Hychem Hyclad E, the substrate must be thoroughly prepared.

• The substrate must be firm, clean and dry with a compressive strength of 25 MPa and a minimum surface tensile strength of 1.5 MPa.
• New concrete must be allowed to cure for a minimum of 28 days and moisture content in concrete must be below 5%.
• Remove all surface laitance, contaminants, existing coatings, curing compounds and any weak or loose materials.
• Hychem Hyclad E should always be installed over suitable substrates which have a recommended Hychem primer applied with the relevant method of preparation prior.

It is important to note that even when the application environment is warm, products which have been stored in cold or cooler conditions should always be pre-conditioned ideally to 20-25°C to ease mixing.

In a clean container, mix Hychem Hyclad E Part A Resin & Part B Hardener at 1:1 by volume using a mechanical stirrer at slow speed. Move the mixer around from side to side and top to bottom and scrape the sides of the mixing vessel to ensure thorough mixing.

Apply Hychem Hyclad E to achieve minimum 1mm total thickness. This is achieved by applying 1 coat by notch trowel at minimum 1L/sqm or 3 coats at a coverage of 0.33L/sqm per coat by brush or roller e.g. to vertical surfaces. Apply each coat at 90 degrees to the previous coat. Note: For compliance with certified waterproofing of domestic wet areas, Hyclad E must be applied and detailed in accordance with AS3740. This includes but is not limited to, specific film builds and the use of bond breakers suitable for a Class II membrane.

Temperature and the surrounding atmospheric conditions will play a part in the curing process of all resin products. Under conditions of low temperatures and high humidity the final cured surface finish can be adversely affected, potentially resulting in poor gloss retention, discoloration over time, poor overcoat ability and inter-coat adhesion. Quite often these conditions will result in the formation of a white film over the surface, often evident after contact with water. If this occurs, the existing coating will need to be abraded to completely remove the affected surface to ensure the adhesion of subsequent applications. In some cases, partial or complete re-priming may be necessary. Attention also needs to be paid to the substrate temperature, which should be at least 3-5 °C above the dew point during the curing phase. Industry standards recommend the accurate recording of environmental conditions such as substrate and air temperatures, humidity levels and dew point readings during both the application and curing processes. Full material warranties cannot be provided unless all the relevant data has been recorded accurately. If in doubt consult the HYCHEM technical department for advice.

Epoxy polymer products may cause allergic reactions through skin contact. Goggles and protective gloves and clothing should be worn at all times. Ensure that there is adequate ventilation and air flow and avoid breathing the vapour. If skin contact occurs wash skin with soap and water. If eye contact occurs wash immediately with copious amount of clean water.

24 months from date of manufacture, stored under shelter at 23°C in original un-opened container.

Temperature and the surrounding atmospheric conditions will play a part in the curing process of all epoxy products. Under conditions of low temperatures and high humidity the final cured surface finish can be adversely affected potentially resulting in poor gloss retention, discoloration over time, poor overcoat ability and inter-coat adhesion. Quite often these conditions will result in the formation of a white film over the surface, often evident after contact with water. This chemical reaction with the atmosphere is commonly referred to as "amine bloom" or "amine blush". If this occurs, then the existing coating will need to be abraded to completely remove the affected surface to ensure the adhesion of subsequent applications. In some cases, partial or complete re-priming may be necessary. To minimise an unsatisfactory cure, the following indicative application conditions should be observed with respect to temperature and humidity levels: 21°C and less than 85% humidity; 10°C and less than 75% humidity. Attention also needs to be paid to the substrate temperature which should be at least 3-5°C above the dew point during the curing phase. Industry standards recommend the accurate recording of environmental conditions such as substrate & air temperatures, humidity levels and dew point readings during both the application & curing processes. Full material warranties cannot be provided unless all the relevant data has been recorded accurately. If in doubt consult the Hychem technical department for advice.