Alumasc’s Derbigum Olivine roofing membrane is a highly effective, durable waterproofing solution which also actively purifies the air and makes a positive contribution towards reducing global warming — by neutralising CO2, the most prevalent greenhouse gas.
When rainwater comes into contact with the olivine the CO2 is washed out of the air. An irreversible chemical reaction takes place which transforms the CO2 into three environmentally-harmless substances — water, magnesium carbonate and sand. For every meter squared of the roofing membrane, 1.75kg of CO2 is neutralised.
Whilst other membranes incorporate titanium dioxide and require either sulphuric acid or chlorine gas in their production, the Olivine in Alumasc’s Derbigum Olivine surfacing is 100% naturally occurring and simply requires grinding down to the right size.
The membrane is hardwearing and is the only bituminous membrane with a 40-year BBA durability statement.
Olivine is completely UV resistant, meaning that its effectiveness is not degraded by the sun’s rays. Even with natural ageing, the active compound of the olivine will still be present when the roofing membrane itself is at the end of its lifespan.