AK 532

Substrate type
Cement, cement-lime and lime plasters. Walls made of ceramic and silicate bricks and blocks, cellular concrete blocks and others, concrete surfaces, Styrofoam layer in thermal insulation systems.

Substrate preparation
For bonding EPS boards
The substrate should be clean, dry, stable and sound. New plaster work and concrete should be set and cured. Remove loose, cracked and brittle plaster and widen the cracks. Patch small pits with ALPOL AZ 130 quick setting or ALPOL AZ 135 levelling mortar, apply ALPOL AT 310 plaster on larger surfaces. Remove contamination and peeling paint from sound plasterwork. Dedust the surfaces. Treat loose substrates with ALPOL AG 700 deep-penetrating primer. If necessary, to reduce the substrate absorption use ALPOL AG 703 or ALPOL AG 708 primer.

For embedding mesh in EPS
Styrofoam surface should be dry, clean, stable and sound. Any gaps between boards should be filled with Styrofoam strips cut to size. Grind the surface with a metal grater or hand sander

Instructions for use
Stir the bag contents manually or mechanically with specified amount of cold and fresh water to reach a homogeneous and required consistency. Allow 5 minutes and stir the prepared mix again. Use the adhesive within 1 hour from mixing with water. If the adhesive thickens in that period of time, stir it thoroughly without adding water. Adding too much water impairs all characteristics: adhesion, tensile strength and setting time.

Bonding EPS boards:
Apply spots with a trowel onto the EPS board and around its edges, or spread a thin layer with a notched trowel. Press the boards slightly against the wall. Board position can be adjusted within 10 minutes after bonding. Bond the boards within max. 20 minutes from spreading adhesive on the substrate. Fixing with the use of mechanical fasteners can be performed after at least 1 day, whereas the mesh can be embedded after 3 days after bonding the boards.

Embedding mesh:
Apply the adhesive with a trowel onto bonded boards and spread it with a notched trowel. Then, apply the mesh and press it with a plain side of the float into the adhesive layer so that the mesh is no longer visible. Apply another adhesive coat if necessary. Once the
adhesive dries, any possible surface irregularities should be patched again or ground with sand paper. After the adhesive is fully dry (minimum 2 days), appropriate ALPOL plaster primer can be applied. The decorative plaster can be applied no sooner than 3 days after embedding the mesh in adhesive.

Tools
Mixer or low-speed electric drill, basket mixer, notched trowel, float, trowel, container for the adhesive.

Working conditions
Work in ambient temperatures between +5°C and +30°C. Do not add any other agents to the adhesive. Protect freshly applied adhesive work from excessive drying and moisture.

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 (60±5)%. The workability may alter in different conditions. Becomes alkaline after mixing with water. Irritating to eyes and respiratory system. Appropriate eye, respiratory system and skin protection measures should be used. 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
Always follow good building practices, observing health & safety standards and regulations. Refer to the application manuals for ALPOL insulation systems, ITB instructions or indications provided in this data sheet for details on bonding insulation boards and insulating walls.