AT 321

Substrate type
Reinforced layer with mesh embedded in adhesive e.g. ALPOL AK 527, ALPOL AK 531, ALPOL AK 532, ALPOL AK 533, ALPOL AK 534 (for winter use) and cement, cement-lime, seasoned concrete substrates, gypsum plasters and gypsum boards.

Substrate preparation
The substrate should be dry, clean, stable, sound (reinforcing layer at least 3 days after embedding mesh in adhesive, plaster – 28 days after application, seasoned concrete.) Remove brittle and loose material of poor bonding strength, patch chipped plaster with ALPOL AZ 130 quick-setting mortar or ALPOL AZ 135 levelling mortar. Treat loose or absorbing substrates with ALPOL AG 700 deeppenetrating primer or, in case of highly absorptive substrates, with ALPOL AG 703 primer for absorbing substrates. Treat the substrate with ALPOL AG 701 plaster primer at least 24 hours before applying the plaster.

Instructions for use
Mix the entire contents of the bag mechanically or manually with specified amount of clean and cold water, to bring the mixture to homogeneous and required consistency. After 5 minutes, stir the prepared mix again. Spread the plaster with a steel float, and level it accordingly. Use a plastic float to make a textured finish. Use the plaster within 1 hour from mixing with water. If the mix thickens in that period of time, stir it thoroughly again without adding water. Adding too much water will prolong setting time and impair all product characteristics including adhesion and strength. Do not use dirty or rusty tools or containers. Plaster may be painted when set, after a minimum of 3–7 days since application (depending on the type of paint and weather conditions).

Tools
Mixer or low-speed electric drill, basket mixer, stainless steel float and trowel, plastic float, scaled container for dosing water, container for plaster.

Working conditions
Work in ambient temperatures between +5°C and +25°C. Do not add any other agents. Protect fresh plasterwork from excessive drying and moisture and direct sunlight. Scaffolding guards are recommended.

Storage
Store in original, unopened packages in dry place – shelf life 12 months from production date. Protect from moisture during transport and storage.

Notes
The specifications and instructions for use are given for the temperature of (20±2)°C and relative air humidity of (65±5)%. The workability may alter in different conditions. Irritating to eyes and respiratory system. Appropriate eye, respiratory system and skin protection measures should be used. Becomes alkaline after mixing with water. In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. Keep away from children. Use water to remove fresh dirt or ALPOL AI 770 cleaner to remove hardened dirt. The manufacturer accepts no responsibility for damage caused by unskilful or inappropriate use of the product.

General recommendations
Work according to building practice, observing health & safety standards and regulations as well as the instructions referring to ALPOL EKO PLUS STANDARD, ALPOL EKO PLUS PREMIUM and ALPOL TERMO STROP thermal insulation systems, as well as the Building Research Institute (ITB) instructions.