What if we could use all our roofs to put our waste to a better use?



Using today's waste to prevent global waste forever. With our circular and sustainable waterproofing building materials we are on a mission to change the world for the better. Our current product is Leadax flashing and in 2020 we will introduce Leadax roofing. The raw material of our products is polyvinyl butyral (PVB), which is used in laminated glass, such as safety glass in car windows. By using this raw material we not only want to reduce the >1 billion kg's of waste it represents, but we also aim to create products which are better and more sustainable than its counterparts. At the end of our products' life-cycle they can be recycled and reused as Leadax again. In short, we are closing the loop.


Where are we now?


In 2017 we introduced our first solution to the market. Leadax flashing replaces toxic lead on roofs, which is unfortunately still being used in construction. Our flashing material offers a number of benefits over using lead, and can be used and processed the same way. The applications include chimneys, cavity walls and valleys, among others.


However, even when all the lead in the world would be replaced by Leadax – the new lead, there still would be 95% of the PVB waste pile left. And that's only in Europe. Therefore we will introduce circular flat roofing to the market, which also uses the PVB waste as its raw material. Currently the product is in its last testing phase and almost ready for introduction.


Where are we going?


With our circular and sustainable waterproofing building materials, such Leadax lead replacement and Leadax roofing, we are on a mission to change the world for the better. We use waste as raw material, create affordable and scalable products and at the end of our products’ lifecycle they can be recycled and reused as Leadax again.


100% PVB waste as raw material
Polyvinyl butyral (PVB) is the plastic foil between safety glass which could not be reused, until now. There is an abundance of PVB waste available worldwide. In Europe alone, this pile of waste weighs in at more than 1.5 billion kilograms (each year!). For comparison: This is the weight of 150 Eiffel towers. Besides that, current products for waterproofing buildings are not sustainable, have a large carbon footprint and are (often) toxic. To be aligned with Sustainable Development Goals of the United Nations in creating a sustainable environment, this problem has to be solved.


Track record
With Leadax – the new lead we are targeting a $1 bn market worldwide. Currently, we are selling in 15 countries already. In the second half of this 2020, Leadax introduces flat roofing from the same waste material as the flashing product. The volume (and therefore impact) of the flat roofing market will even be much bigger than the lead and lead replacement market. The flat roofing market has an annual volume of $ 20 bn, mostly filled in by virgin raw materials.


Impact of Leadax Circular Roofing
When we introduce Leadax roofing, we expect a large reduction of CO2 emissions, an increase of autonomy of resources and local technology and a decrease in large amounts of PVB waste.



Using today's waste to prevent global waste forever.