• Polyurethane Liquid Waterproofing membranes
    The need of waterproofing and protection of constructions for a better future and living conditions has led to new innovations and the use of high state-of-art synthetic polyurethane polymers, the so-called liquid membranes. Polyurethane waterproofing membranes are liquid applied systems that offer decisive advantages particularly where seamless systems are desired; either structurally or aesthetically, and for geometrically complicated connections with ventilation outlets or upturns. These systems cure to yield seamless membranes with long-term flexibility while sealing around even in the most complex protrusions becomes easy. Advantages of Polyurethane liquid waterproofing membranes: · 2 mm coat thickness in 2-3 layers at most. · no significant load increase on lightweight decks and roofs. · UV resistant, no coat protection required. · easy to repair, even locally. · long term maintenance is quick and low cost. Membrane removal will not be necessary, whatever the kind of maintenance. · application on top of existing waterproofing systems is possible. All these benefits make it sound too good to be true but there is a catch: It is critical to success the right choice of material selection from the various alternatives in the market. Therefore, for effective waterproofing, the polyurethane liquid membrane must have the following attributes: · Impermeabillity. Obviously, zero water penetration is required. · Flexibility. They must withstand the normal movements of building structures (e.g. distortion, contortion, earthquake activity etc.). · Durability. They must be able to retain their integrity for long periods of time. · Breathability (sometimes required). Membranes must be able to breathe so that moisture vapours from building interiors and substrates can escape freely. · Humidity barrier (sometimes required). Essential in hot and humid climates. · Resistance. The membrane must withstand environmental and climatic conditions. Not all polyurethane membranes on the market satisfy these criteria! Especially, in the construction industry the importance of applying advanced durable solutions is crucial. At the end, a good polyurethane coating will display the following: · Zero water swelling rate and high retention of tensile strength, hardness and elasticity under prolonged exposure to harsh climatic conditions (UV, wetness, heat, ozone etc.) · Constant adhesion to the substrate when periodically exposed to harsh climatic conditions. · Superior performance in an environment which combines all possible climatic conditions. ALCHIMICA revolutionized the waterproofing technologies globally, being the game changer in global waterproofing technologies. We have shifted the focus worldwide from multi-layer systems, traditionally thought to guarantee water-tightness, to new systems based on advanced technology liquid membranes. We offer a wide range of Polyurethane Liquid Membranes which fulfil the above requirements. The waterproofing products available from ALCHIMICA are tailor made to provide long term protection against all natural elements. From roof waterproofing to below grade walls and foundations to highways and bridges or simple under-tile roof waterproofing of residences, the bottom line is one: ALCHIMICA is the only provider you need!
  • bba hyperdesmo
    Applied in thousands of projects in more than a hundred countries all over the world, the HYPERDESMO® System has set the standard in liquid applied waterproofing for more than 35 years under the certification of EOTA, achieving a CE mark for an expected working life of 25 years. Today, HYPERDESMO®’s superior quality, exceptional performance and ever-growing market presence have led to another milestone in its journey, the BBA Certification. Catering to the needs and standards of the UK market, the HYPERDESMO® System has now obtained the certification of the British Board of Agrément No.18/5567   HYPERDESMO® SYSTEM BBA ACCREDITED WATERPROOFING LEADERSHIP  
    ALCHIMICA introduces a single component liquid applied polyurethane/polyurea waterproofing membrane that receives an ETAG 033 CE mark for bridge decks.   HYPERDESMO®-300 has been specially designed, based on the long standing and successful technology of HYPERDESMO® System, to comply with the new requirements of ETAG 033 EU protocol for “Liquid applied Bridge Deck waterproofing kits”. It is a single component liquid applied polyurethane/polyurea waterproofing membrane  certified according to ETAG 033 that holds a CE Mark assuming an intended working life of 25 years. HYPERDESMO®-300 displays excellent elongation and crack bridging properties at a wide range of extremely high or low temperatures.It has excellent mechanical and chemical resistance properties and can withstand petrochemicals and salts that commonly attack bridge decks. Its thixotropic behavior allows for application on sloped and even vertical substrates, and assures complete seamless and homogenous covering of uneven concrete surfaces usually encountered on bridge decks. HYPERDESMO®-300 is recommended for both new and existing bridge waterproofing applications. No special machinery is required for professional applications. Designed to resist a shock temperature of 220°C, HYPERDESMO®-300 has exceptional compatibility with asphalt overlays without requiring an adhesion layer. Due to its high tensile and tear strength, it is able to withstand traffic stresses of heavy asphalt application machinery.   Available in roller and spray grade Consumption +/- 2.5 kg/m2 Total coat thickness +/- 2.0 mm   ​Clich here to see product's details
  • Alchimica laboratory
    To meet its increasing R&D needs, ALCHIMICA renovated its advanced technology laboratory in Egaleo (Athens, Greece), which now expands on a surface of 300 square meters.



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