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  • 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.
  • GEODESMO - Κεντρική Εικόνα
    GEODESMO is a complete thermal insulating and waterproofing system that combines excellent waterproofing and protection properties of the polyurethane based membrane HYPERDESMO® with thermal insulating, soundproofing and anti-fire properties of FIBRAN geo BP 70 rock wool. GEODESMO is an easy applied system appropriate for new constructions as well as renovation project. It is a very light weight system that can be applied over several types of substrates like concrete, screeds, tiles, metallic or wooden surfaces etc.
  • Waterproofing with Hyperdesmo in only one coat? Now possible with Hyperdesmo-HAA  (Humidity Activated Accelerator) - Κεντρική Εικόνα
    The Hyperdesmo Series of one component liquid applied polyurethane membranes have been used all over the world with great success over the last 30 years. We at Alchimica are always looking for ways to simplify the application of all our products so we considered why not try to do this with our best seller? In general Hyperdesmo is a very user friendly material. It is a one component liquid applied Polyurethane which in itself is the epitome of easy application. So are there any difficulties when applying Hyperdesmo? We identified two points where application of Hyperdesmo may prove a bit challenging: 1.The 1,2 mm minimum thickness recommended has to be applied in more than one coat or else bubble formation occurs. This can be a problem when labor costs play a significant role in securing a project. Secondly, weather may prohibit the application of the second coat the next day and therefore questions may arise concerning the interlayer adhesion or even worse, residual moisture on first layer will result in substantial bubbling. 2.The curing speed of Hyperdesmo is affected by the climate. In low temperatures and/or low humidity conditions, the curing of Hyperdesmo is delayed and in extreme northern climates the application is limited to a few months per year. Can these limitations be solved without changing the end performance of Hyperdesmo? The answer is yes! By using the new product of the Hyperdesmo family, Hyperdesmo HAA! HYPERDESMO®-HAA is a unique single component polyurethane liquid membrane, based on the successful combination of the traditional, well established, Hyperdesmo and Accelerator 3000 which throughout the years has provided applicators with a solution for a fast curing, bubble free thick layer membrane. Our commitment to R&D and investment and our efforts to continuously upgrade our Chemical processing plant has allowed us to formulate a Hyperdesmo® with the Accelerator 3000 incorporated in a blocked fashion, that upon contact with humidity is released and self- accelerates the curing of the material in a similar manner as the Accelerator 3000. Due to its unique formulation, it cures rapidly to form a completely defect free membrane with excellent mechanical and elastomeric properties, as well as excellent adhesion to different surfaces. This product is ideal for use during the winter months or in climates with relatively low humidity. Furthermore, the fact that the minimum consumption can now be achieved in only one coat, reduces labor cost and eliminates previous drawbacks of the Hyperdesmo® + Accelerator system such as short working time or problems associated with using Hyperdesmo on its own in multilayer coats adhesion failure.  
  • Τι κάνει τα συστήματα στεγάνωσης της ALCHIMICA ξεχωριστά! - Κεντρική Εικόνα
    How We View Waterproofing.   Finding the most durable, economic and timesaving waterproofing system for roofs is a major challenge nowadays. Whether flat or inclined, they are subject to rain and snow. It is more serious for flat roofs since water can stagnate on the roof surface. Water resistance (as well as resistance to UV, acid rain and the daily or seasonal thermal cycle) is the main factor that determines the exterior durability of many types of coatings. It is detrimental to the durability of coatings used on flat (or low slope) roofs, where pond formation occurs. Further challenges may materialise in the form of complex roof shapes and installations such as air-conditioning units, pipe supports, antennas, solar heaters etc. During the last couple of decades, manufacturers have turned to new innovations based on high technology synthetic membranes, the so-called liquid membranes. This new school of thought has abandoned the idea that only with multi-layer systems is water-tightness guaranteed. They are based on state-of-the-art polymers (modified bitumen, PVC, EPDM, Hypalon, polyurethane) of which a thicknesses of 2mm maximum can provide long term waterproofing and protection. Furthermore, being synthetic, they are produced under strict quality guidelines and standards and, therefore, a constant and reproducible quality is ensured. As such, polyurethane liquid membranes combine low thickness application with completely seamless membrane formation, regardless of roof surface complexity. Polyurethane Liquid Membranes: Seamless Waterproofing. Polyurethane systems are applied in liquid form. They cure to yield seamless membranes with long-term flexibility. Sealing around even the most complex protrusions is easy. Application of liquid polyurethane systems is easy and economic for any type of roof surface: · 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. Does it sound too good to be true? Actually, there is a catch: Choosing the right polyurethane system! In order to have 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! 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 offers a wide range of Polyurethane Liquid Membranes which fulfil the above requirements. We have developed products which will suit any roof waterproofing need. The waterproofing products available from ALCHIMICA are tailor made to provide long term protection against all natural elements. From waterproofing 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!