Exterior thermal insulation systems (ETICS) or external thermal insulation decorative systems (EIFS) appeared in Europe in the early 1970s. Germany's first oil crisis in 1973 and government financial support for private homeowners greatly contributed to this system. From 1973 to 1993, approximately 300×106m2 building facades in the Federal Republic of Germany were equipped with ETICS, thus saving more than 18×109L of heating oil.
ETICS makes temperature and humidity more stable during seasonal changes, thus significantly improving living comfort. The system significantly reduces building damage and lowers overall construction costs by reducing temperature changes and moisture condensation on the building's exterior walls. Insulation is therefore not only a smart investment for new buildings, but also a useful innovative measure, especially where building facades must be renovated.
The first ETICS, which appeared in the early 1970s, involved adding cement to an emulsion adhesive at the construction site. This composite material secures expanded polystyrene panels to the walls to be insulated. Use the same products and procedures to embed fiberglass mesh into the reinforcement layer or insulating panel primer emulsion layer. In the early days, most synthetic resins were used for decorative coatings over base coats.
In practice, however, many problems arise when using this system, especially when the emulsion adhesive is mixed with cement on site. According to this process, the water-cement ratio cannot be guaranteed to be the same and the mixture is evenly mixed. Therefore, adhesives and primers of stable quality cannot be obtained, resulting in insufficient bonding strength or flexibility, resulting in product performance that is not up to standard, and may even damage the building facade. noodle. These disadvantages also exist in two-component systems in which the emulsion is added to the dry-mix mortar on site. </p
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