Fibreglass Waterproofing using Flexitec resin system. Combining the best elements of fibreglass with the versatility of overlay systems, no other flat roof solution performs at this level across so many applications. Pre-finished cast iron style guttering can cut costs by 30% and installation time by 60%. Extremely strong, durable and vandal resistant. Dimensionally accurate and stable. Life expectancy in excess of 40 years Cast iron is 100% recyclable