Go Green - Go Lead
Lead is a natural material which is highly recycled and can be reused due to the longevity of the material especially when compared with its synthetically produced petrochemical made alternatives i.e. Sarnafill, Asphalt and GRP Fibreglass ect.
Even the recycling process of lead is more environmentally friendly as less heat is needed and there is no need for any to go to waste. Today's alternative materials can fail after 10-15 years and because of the way they are manufactured and their need for early replacement - they have both a negative cost and environmental impact.