Wessex System 310: Mixing, storage and application
Because epoxy systems are exothermic, it is important to appreciate that the temperature of both the environment and the two components before mixing, together with the total mass of the epoxy determines both the working and gelation of time of the adhesive.
Therefore, we recommend storing Wessex System 310 at temperatures above 15°C. To shorten the period between the application of the adhesive and the subsequent trafficking of the tiled area the material should be held at higher temperatures up to, say 25°C.
It is vital that the epoxide resin and hardener are well mixed to produce a homogenous blend – an essential requirement for ultimate bond strength. With heavily filled systems such as the Wessex 310 epoxy, complete mixing is even more important.
With the Wessex 310 pack, pour the total contents of the polybucket containing the epoxide resin into the epoxide hardener and mix thoroughly for four minutes.
The larger the pack size, the more difficult and time consuming the mixing operation becomes. The recommended maximum pack size is a 6kg unit. The volume of the pack is blended into a homogenous mass by mixing for the required period of four minutes with an air-driven mixer, ideally fitted with a large gate paddle.
The different coloured components provide a visual aid to complete mixing which is indicated when the adhesive forms a uniform colour and all signs of streakiness have disappeared.
Within ten minutes of mixing the epoxy composition, apply a thin coating to both the flooring substrate and the floor to which it is to be bonded.
Position the floor covering onto the floor and ensure that intimate contact between the two substrates is maintained throughout the curing cycle by placing some weights onto the covering.
A screeding tool such as a saw tooth scraper has been found to be the most suitable for applying the adhesive to a thickness of approximately 0.5mm. To obtain this thickness of coating, the scraper should have a serrated edge with a minimum depth of 1.5mm. Immediately after application onto the substrates, the mixed epoxy will flow to the required uniform thickness and the floor covering can be positioned onto the floor.
Synthetic resins can cause dermatitis if not handled properly, so care should be taken to avoid contact with the skin. Before working with these materials the relevant Material Safety Data Sheets must be read:
Wessex 310 Epoxide Resin Part A
Wessex 310 Epoxide Hardener Part B
Application of Wessex Barrier Cream to the hands affords protection against contact with the synthetic resin and hardener.
After finishing work with Wessex 310 System, wash your hands with Wessex Resin Removing Cream, followed by soap and water. Solvents must not be used.
Mixing equipment and tools should be cleaned with a suitable solvent such as WEST SYSTEM 850 Solvent or acetone.
These materials are flammable and must be handled with care, and away from any flames or sources of ignition.
It is important that these solvents are not used for cleaning the skin as this can cause defatting.