it is used for:
- Floating screed
- Bonded screed
- Unbonded screed
- Floating screed with underfloor heating
Screeds manufactured with FONDOSEY are classified as CT-C30-F6-A 1fl according to standard UNI EN 13813. When processed at a temperature of +23 °C, it adds certain features to the screeds: rapid hardening without undergoing appreciable shrinkage; rapid drying of the mixing water and residual humidity; high initial and final mechanical strengths that are much higher than those obtained with traditional screeds. FONDOSEY screeds must be unbonded from pillars and perimeter walls using, for example, expanded polystyrene or cork. It is suitable for laying screeds over heating systems and as a support for the laying of parquet without the use of self-levelling. When FONDOSEY screeds are crossed by pipes that significantly reduce their thickness, it is essential to reinforce the areas concerned with a light hexagonal wire mesh to avoid dangerous weakening of the screed. Very large surfaces must be interrupted with suitable fractioning joints. Any existing joints on the substrate must always be placed on the FONDOSEY screed.
After 8 hours the screed can be walked on; after 24 hours it is possible to lay the ceramic; after 3 days natural stones; after 5 days if the residual humidity does not exceed 2% in weight it is possible to lay wooden floors.
The residual moisture of the FONDOSEY screed must be measured with a carbide hygrometer, which provides reliable moisture data by weight.