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EVALON vs PVC-P : Which Is Better for Waterproofing?

14 Feb 2020 by Elmich

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.

EVALON vs PVC-P : Which Is Better for Waterproofing?

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.

Differences in Composition

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 vs PVC-P : Which Is Better for Waterproofing?

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.

Availability of Colours

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.

EVALON vs PVC-P : Which Is Better for Waterproofing?

Compatibility with Surfaces

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.

Further Readings:

Spotlight On Flat Roofs, Der Dachdeckermaister. (1986). West Germany.

Glück, L. Long Term Behaviour of Synthetic Roofing Membranes. 

Loh, A. What Waterproofing – An Architects’ Viewpoint.

OVERVIEWEstablished in 1985, Elmich Pte Ltd is the leading provider of state-of-the-art and ecologically-minded urban landscaping, waterproofing, drainage, green roofs and stormwater management solutions to developers, contractors, and architects around the world.Headquartered in Singapore with international offices in Australia, Germany, Malaysia, Switzerland and the United States, Elmich works closely with its network of partners in more than 30 countries across 6 continents.Having over 33 years of experience, Elmich prides itself as a professional, responsible and eco-sensitive company with sound management and quality practices certified under ISO 9001:2015 (Quality Management), ISO 14001:2015 (Environmental Management) and SS ISO 22301:2012 (Business Continuity Management).Elmich products meet international sustainability standards and the highest certification from the Singapore Green Building Council for Energy Efficiency, Water Efficiency, Resource Efficiency, Health & Environmental Protection and Other Green Features.Elmich products have been successfully used in numerous ‘green building’ certified award-winning projects worldwide.At Elmich, everyone is driven by one singular passion: enhancing lives for you and future generations.OUR VISIONProviding sustainable building solutions to create cities, where urban meets nature.OUR MISSIONProducts: Our mission is to deliver environmentally safe, innovative, and cost-effective urban greening solutions to our customers worldwide.People: We strive to continuously upgrade our skills, knowledge, and technology, and provide our customers with excellent products, knowledge, and technical expertise on everything related to urban landscaping, waterproofing, and drainage systems.Processes: We are committed to improving both internal and external processes in every aspect of our business, from research and development and product development to supply chain management and strengthening of partnerships with our suppliers and partners.Planet: We are conscious and proud of our unique role in co-creating a sustainable planet. We apply sound environment principles in everything we do, including the use of recycled or recyclable plastics for Elmich green walls and roofs.OUR VALUESOur corporate values guide our behaviours and drive our actions.This forms our foundation where we live by these values to foster a sense of unity and purpose towards successTEAMWORKINTEGRITYPROFESSIONALISMEXCELLENCEINNOVATON


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