There are hardly any limits to flat roof waterproofing with EVALON synthetic waterproofing membranes. The comprehensive EVALON integrated system comprising different product varieties and a wide range of accessories offers perfect solutions to any flat roof project, large or small. Of course, we will gladly assist you in finding and implementing the best solution for each individual task.
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Product variantsEvery flat roof is different. That is why we offer different varieties of the EVALON waterproofing membrane for a varied range of application, thus always providing you with exactly the right membrane featuring the properties you require. It goes without saying that, in the design phase, we will assist you selecting the most appropriate solution.
AccessoriesWe offer a comprehensive range of accessories perfectly matched to the alwitra waterproofing membranes. Allowing for quicker and easier installation and stunning results. Making good things even better in every detail!
EVALON® vs. bituminous sheetsConvinced by the many advantages of the material, we have developed the first synthetic waterproofing membrane: faster installation, increased service-life and forward-looking flat roofs. alwitra waterproofing membranes do not contain any herbicides, in case you want to install a green roof. And you don't need a fire guard, either. Reading the signs of the time, together we can set the path for the future.
The installation instructions show the quick and easy handling and laying of EVALON waterproofing membranes on the roof. They detail the professional installation and provide many useful practical tips and tricks. Well prepared for flat roof waterproofing!
Product brochuresEVALON constitutes a product family and an integrated system offering a wide range of options for fast, accurate and professional flat roof waterproofing. Our brochures provide detailed and practical information on the individual products. Download them here and discover the opportunities...
An integrated systemA comprehensive sophisticated waterproofing system extending from one roof edge to the other, including all accessories and all services. So, when the work starts on the roof, everything is at hand, allowing for extremely quick, accurate and safe installation. No compromises, no flaws. It's fun, it pays off, and it gives you a comfortable feeling of security.
“United on top.” is what we believe in. We live up to this genuine commitment every single day. We are at our customers’ side, we put ourselves in their place, supplying products and services for practical use. Together with roofers, architects, designers, and distributors, we design and realize extraordinary, exceptionally durable and stunning flat roofs. Learn more about our mindset and our commitment...
When it comes to waterproofing, reliability and durability of solutions are crucial factors that may determine the long term liveability of a building project. Common problems can arise from sub-optimal waterproofing in the long term, including entrapment of moisture in flooring surfaces and volumetric loss of membranes. Significant volumetric loss, in particular, ultimately leads to the complete failure of a waterproofing membrane due to the shrinking, stretching, and tearing of membranes.
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In recent years, Plasticised PVC (PVC-P) membranes are the go-to waterproofing solution for applicators, largely due to its ease in handling and ability to be homogenously welded together using hot air. EVALON EVA-PVC waterproofing membranes take it several steps further with clear advantages over commonplace PVC-P membranes.
Liquid plasticisers play a crucial role in keeping membranes flexible, giving them the ability to conform to different surfaces. These liquid plasticisers inevitably migrate and evaporate over time, shrinking the membranes and reverting it to a brittle state. Commonplace PVC-P membranes contain approximately 40% liquid plasticisers, resulting in serious volumetric and flexibility loss when the liquid plasticisers evaporate.
It is essential for waterproofing membranes to do their job right and keep water out, regardless of their age. Over time, the loss of liquid plasticiser in PVC-P membranes cause serious problems such as cracking of membranes, rendering the waterproofing ineffective and compromising the water-tightness of the building.
Comparatively, EVALON’s unique composition mitigates these problems by drastically reducing the liquid plasticisers present in the membrane.
EVALON’s unique composition preserves its structural integrity over time by drastically reducing the liquid plasticisers present in the membrane.
EVALON is made from DuPont’s Elvaloy EVA (Ethyl Vinyl Acetate) terpolymers, solid elasticisers which serve as substitutes for liquid plasticisers. With an approximate 92% solid composition, there is lesser liquid plasticiser present in EVALON membranes. This results in an equally flexible, durable, and strong membrane that does not lose significant volume and flexibility to plasticiser migration. EVALON’s durability has earned a 30-year durability certification from the British Board of Agrément, as well as meeting the German FLL requirements for root resistance.
As a bonus over PVC-P membranes, EVALON membranes are available in lighter colours, allowing for more aesthetically pleasing rooftops. PVC-P membranes are generally produced in dark colours, due to light colour pigments being susceptible to migration together with the liquid plasticisers. Comparatively, with EVALON’s high solid composition, the rate of colour pigment migration is greatly reduced.
As an added advantage over regular PVC membranes, EVALON’s EVA-PVC composition makes it compatible with bitumen and polystyrene. EVA terpolymer and PVC forms an exceptionally stable alloy, allowing it to be used in areas where regular PVC-P membranes are not compatible. This opens up new avenues of installation scenarios, making EVALON membranes an immensely flexible waterproofing membrane for your building needs. With over 160,000,000m2 of EVALON membranes already installed worldwide, and over 2,000,000m2 on iconic landmarks in Singapore, EVALON is a tested and proven waterproofing solution that gives you peace of mind, no matter the weather.
Spotlight On Flat Roofs, Der Dachdeckermaister. (). West Germany.
Glück, L. Long Term Behaviour of Synthetic Roofing Membranes.
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