Mastic Asphalt provides protection for a wide range of construction applications and offers total waterproofing integrity for roofing and tanking applications. While it is one of the worlds most traditional construction materials it has continued to be developed with the times and even in todays fasttrack building industry polymer modified mastic asphalt remains the choice for many designers and specifiers.ShieldFLEX should be installed by trained operatives who have undertaken the mastic asphalt industrys extensive training programme which lasts for a minimum of three years to NVQ Level three or equivalent. As such, polymer modified mastic asphalt should only be installed by specialist installers.Mastic asphalt is a traditional material for a whole range of construction applications, both new build and refurbishment, applications where a smooth, seamless, durable surface is required.It offers total waterproofing integrity for roofing and tanking. It also acts as a tough working surface in flooring and paving applications.Mastic asphalt is one of the worlds most traditional construction materials and has continued to develop with the times, even in todays hi-tech building industry.The product comprises suitably graded limestone aggregates bound together with an asphaltic cement (primarily refined bitumens) to produce a dense, voidless material. It cannot be compacted, and is spread by means of a hand float, rather than rolled.Todays modern mastic asphalt contains highly advanced polymer formulations, pioneered by manufacturers like Permanite in the 1980s.