AH 752

Substrate type
Concrete substrates, basement and foundation masonry walls (fully pointed), cement and cement-lime plasters, cement screed.

Substrate preparation
The substrate must be sound, free from dirt and substances which may impair adhesion. New plaster work and concrete should be set and seasoned. Old, loose, brittle and peeling material of poor adhesion should be removed. Any chipped areas should be patched with ALPOL AZ 130 quick setting mortar or ALPOL AZ 135 levelling mortar. At least 3 hours prior to application of the compound, treat the substrate with ALPOL AG 707 silicate-polymer primer. Corners, at the contact points between walls and walls and bottom, which are particularly exposed to stress, should be strengthened with ALPOL tapes and corner beads with their edges embedded in ALPOL AH 752 mortar. Floor drains and pipe culverts should be sealed with appropriate ALPOL sealing sleeves with their edges embedded in ALPOL AH 752 mortar. Degrease, remove rust and apply corrosion protection to metallic components.

Instructions for use
To prepare ALPOL AH 752 flexible two-component sealing compound, pour the liquid component into a container and add powdered component while simultaneously stirring using low-speed electric drill with a basket mixer, until homogeneous mix is obtained (mixing time around 3-4 minutes.) Allow 5 minutes and mix again. The collective package contains components in a ready-to-mix proportion. To reach a sludge consistency, up to 3% water may be added while applying the first coat. Apply at least two coats of the compound. Apply the first sludgy coat with a brush or a masonry brush, while intensively rubbing the sealing compound into the substrate at the same time. Use a stainless steel float to apply the second and the following coats of the compound having the consistency of putty. Remember to apply the following coats after the previous one has set, i.e. after around 6 hours. To avoid shrinkage cracks, do not apply more mortar than 2 kg/m2 at a time. Depending on particular use, the total thickness of the waterproofing coat after drying should be between 2 and 3 mm. Spraying units can be used to apply the mortar on large areas. The coat can be subjected to load after the time given in the “Technical data” table. It is recommended to bond ceramic cladding on terraces, balconies and other horizontal surfaces with ALPOL AK 516 quick-setting liquefied thin-layer or ALPOL AK 517 quick-setting liquefied medium-layer or with the following flexible adhesives: ALPOL AK 512, ALPOL AK 513, ALPOL AK 514, ALPOL AK 515 or ALPOL AK 518.

Tools
Mixer or low-speed electric drill, basket mixer, stainless steel float, putty knife or trowel, masonry brush, spraying unit, scaled container.

Working conditions
Work in ambient temperatures between +5°C and +25°C. Do not add any agents to the compound, except for the recommended amount of water. Protect freshly applied compound from excessive drying and moisture.

Storage
In original, not damaged, tightly closed containers in dry rooms, in temperature between +5°C and +30°C – shelf life 12 months from production date. Protect the product from freezing.

Notes
The specifications and instructions for use are given for the temperature of (23±2)°C and relative air humidity of (55±5)%. The workability and drying time may alter in different conditions. Wear safety goggles. In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. Protect your skin. Use protective clothing and gloves. Keep away from children. Use water for cleaning tools. The manufacturer accepts no responsibility for damage caused by unskilful or inappropriate use of the product.

General recommendations
Work according to building practice, observing manufacturer’s instructions as well as health & safety standards and regulations.