Aquaproof

Aquaproof It is a ready-to-use, grey, single-component cementitious mortar, based on high-strength cements, selected fine-grained aggregates, special synthetic resins and organic additives, classified as type C in accordance with EN 1504-2 for the MC – IR principles. Its specially formulated composition ensures waterproofing performance even at thin thicknesses, exceptional workability and ease of application across a wide range of application methods (trowel, brush, roller, broom, spray), excellent adhesion to the substrate, superb water retention, and deep-penetrating sealing of the substrate’s capillary channels via osmotic penetration.

Instructions for use

Preparation for installation
Substrates must be non-bleeding, solid and even, yet sufficiently roughened; they must be thoroughly clean, free from oil and grease, dust, loose material and general dirt, and free from any paint film residues; they must also be adequately cured and free from significant shrinkage. In the event of efflorescence, this must be thoroughly removed from the surface by mechanical cleaning and subsequently neutralised deep down using the Antisale treatment. Surface imperfections and irregularities, such as pockets of gravel, eroded or deteriorated areas, and holes left by formwork spacers, must be repaired in advance and levelled using a suitable mortar, such as Umafix or Rinnova. The floor-to-wall joints must be concave (‘tapered’). Wet the surface to be waterproofed until completely saturated and allow any excess water to evaporate or remove it with a sponge, taking care to eliminate any surface film of water.

Product preparation
For the first coat (primer), which must always be applied with a brush, mix ‘Aquaproof’ with 25–27% clean water (equivalent to 6.25–6.75 litres per 25 kg bag) using a mechanical mixer (low-speed drill with a suitable mixing paddle) until the mixture is homogeneous and free from lumps. Leave to rest for about 10 minutes, then stir briefly and, if necessary, adjust the consistency by adding a small amount of water. To ensure good adhesion on substrates previously treated with Antisale, mix the first coat of Aquaproof with approximately 25–26% (equivalent to 6.25–6.5 litres per 25 kg bag) of a 1:3 diluted solution of Neoplast Latex (1 part by volume of Neoplast Latex to 3 parts by volume of water). On old substrates where Aquaproof may have difficulty adhering, mix the first coat with approximately 27–28% (equivalent to 6.75–7.0 litres per 25 kg bag) of a 1:2 diluted Neoplast Latex solution (1 part by volume of Neoplast Latex to 2 parts by volume of water).

Application instructions
Apply the Aquaproof mixture with a brush, taking particular care to cover any irregularities evenly and fill surface pores; special attention must be paid to corners, edges, recesses and floor-to-wall junctions. If you wish to apply subsequent coats with a trowel, mix ‘Aquaproof’ with 23–25% clean water (equivalent to 5.75–6.25 litres per 25 kg bag), using the same procedure as for preparing the mixture to be applied with a brush. In all cases, the mixture prepared in this way remains workable for approximately 40 minutes under normal conditions (at 20 °C); at higher temperatures, the workable time is reduced, whilst at lower temperatures it is extended. Subsequent coats, if applied by brush, must be laid in a criss-cross pattern to the previous coat. For application by roller or wide-bristle brush, there is no need to apply the first coat by brush, and the same amount of mixing water used for brush application may be used. For spray application, there is no need to apply the first coat with a brush; as a general guide, the same mixing water ratio used for brush, roller and wide-bristle brush application may be used, but the product must first be mixed separately with water, left to stand for the correct amount of time as described above, and then poured into the feed hopper of the rendering machine. If necessary, adjust the mixing water ratio according to the type of rendering machine and nozzle used. Apply in coats, using either a trowel, brush, roller, wide-bristle brush or spray, to a thickness of up to 1 mm, taking care to apply the product using the ‘wet-on-wet’ technique; that is, apply the next coat when the previous one has set but is not yet fully hardened. Do not exceed this thickness to avoid the risk of cracking. In the event of damp or moisture seepage, apply at least 2 coats of the product. In the case of groundwater, standing water, or water under positive or negative pressure, apply at least 3 coats. The waiting time between coats may vary significantly depending on the porosity of the substrate and environmental conditions. Generally, it is sufficient to wait 4–6 hours between coats. In the event of high temperatures and/or strong winds, to prevent the mixing water from evaporating too quickly, keep the surface damp by spraying it with a fine mist of water. If necessary, the final coat can be finished with a sponge trowel, just as with a standard skim-coat mortar. If the Aquaproof is to come into contact with very soft water (0 to 10 degrees of French hardness), please consult the Technical Department. The tools used for application can be cleaned with water before the mortar hardens; thereafter, cleaning can only be carried out by mechanical removal.

Storage

Aquaproof When stored in a dry, sheltered place in its original, unopened bags, it will keep for at least 12 months.

Warnings

• Never apply Aquaproof to gypsum substrates or to gypsum-based mortars, plasters and fillers.
• Never apply Aquaproof to plastic plasters, painted substrates, timber or asbestos cement.
• Never apply Aquaproof to flexible substrates or those subject to significant deformation. In such cases, use Flex 1K, Flex 2K or Flexistar.
• Never apply ‘Aquaproof’ at temperatures below +5 °C or above +35 °C.
• Never mix with other binders such as cement, hydraulic lime, gypsum, etc.
• Never add further water once the mix has set.
• Do not use the mixed product once it has started to set; therefore, take care to prepare only the amount of mixture required for immediate application within its workability time.
• In the case of applications on substrates characterised by high salt content and subject to negative water pressure, it will be necessary to supplement the waterproofing – to ensure the system functions correctly and durably – with the subsequent application of a restoration plaster such as WTA Plaster (see specific technical data sheet).
• For applications in contact with fresh water (French degrees 0–10 °F), please contact the technical department.