Hydro

Hydro is a single-component, waterproof and high-tensile polyurethane adhesive. The formulation has been specifically developed to ensure controlled post-expansion: the increase in volume (visible only when the product is not immediately compressed after extrusion) is minimised to increase density and, consequently, adhesive strength and tear resistance. It adheres strongly to concrete, polymeric materials and plastics, with the exception of polyethylene, Teflon and silicone. It offers good resistance to water, detergents, microorganisms and chemicals. The high consistency and tack of the fresh product, the dimensional stability and mechanical properties of the cured material, make ‘Hydro’ the ideal product for bonding applications, particularly in confined spaces where the weight of the assembled components prevents expansion, thereby contributing to the formation of a compact and continuous polyurethane adhesive layer.

Instructions for use

1. The substrates to be bonded must be sufficiently strong, sound, clean and free from oils, greases, dust and general dirt that could impair adhesion: if necessary, remove any loose material and carry out a general clean. Moisten the surface before application to ensure the fresh product has the necessary moisture for proper curing.
2. Shake the can for at least 15 seconds before use and repeat this after any breaks in work.
3. Position the first base element. Turn the can upside down so that the valve is facing downwards, aim the nozzle in the desired direction and press it, forming a bead approximately 3 cm in diameter along the entire upper edge, shaping it to fit snugly. Position the next riser within a few minutes and repeat the process for all elements, risers and/or covers to be laid, until the work is complete. The compression of the bead, achieved by the weight of the overlapping/adjacent elements, will create a sealing system capable of ensuring watertightness, even under pressure, up to values of around 0.5 bar. In the case of pipe connections and fittings in manholes/tanks, after positioning the pipe or duct by fitting it into the designated cavity of the manhole or tank, form a ring of adhesive approximately 3 cm in diameter around the joint itself, filling the gap between the two elements to be joined by approximately 50 per cent of the available space. The subsequent post-expansion of the adhesive will completely fill the gaps; however, given the substantial thickness of the seal, whilst it will ensure good watertightness, it will not provide an effective pressure seal. After the adhesive has formed a film on the surface, any excess can be compressed with your fingers – wearing suitable gloves – to form a more compact bead. If you do not use the entire contents of a cylinder, return it to an upright position and press the regulator for a few moments. The escaping gas will clean the valve, but the nozzle will need to be replaced before the cylinder can be reused.
4. When installing shower trays, moisten the supports and extrude the adhesive in varying quantities depending on the profile of the underside of the tray. This ensures not only a secure bond but also fills any voids and dampens the acoustic reverberation of the water. Moisten Hydro and install the shower tray, taking care to place a weight on the tray immediately and leave it there for the first few hours, or at least until the adhesive has fully set.

Storage

Store in a cool place in an upright position. Take great care to avoid storing the product horizontally, as this causes deposits to form rapidly beneath the valve, which will irreparably compromise the extrusion of the material. Hydro’ has a shelf life of at least 18 months if stored upright, in a cool place (at temperatures below 25 °C), in a dry place and in its original, unopened packaging. Observe the expiry date indicated on the cylinder.

Warnings

Do not use the product on surfaces exposed to direct sunlight. Substrates and objects that are completely saturated with water will prevent the product from adhering. If in doubt, please contact our Technical Department.

The Hydro can is a pressurised container. Protect from direct sunlight and do not expose to temperatures exceeding 50 °C. Do not pierce or burn, even after use. Do not spray onto a flame or a hot surface. Keep away from all sources of ignition, flames and sparks. Do not smoke. Do not breathe in the aerosols. Keep out of the reach of children. This product contains highly flammable components; therefore, use it only in well-ventilated areas. Particularly when using several cans in the same place, there is a risk of explosive air/propellant gas mixtures forming. Contains 4,4'-diphenylmethane diisocyanate (EEC No. 615-005-00-9). Harmful if inhaled. Irritating to the eyes, respiratory tract and skin. May cause sensitisation by inhalation and skin contact. In case of contact with the eyes, rinse immediately with plenty of water and seek medical advice. In case of skin contact, wash immediately and thoroughly with soap and water. Wear suitable protective clothing and gloves. In case of inadequate ventilation, use a suitable respirator. In the event of an accident or if you feel unwell, seek medical advice immediately (if possible, show the label to the doctor).