Claims made for the long-term adhesion, UV and salt spray resistance of Plascoat's PPA 571 thermoplastic construction coating have been upheld in the toughest of 12-year tests in Spain. The pictures on the left show an early example coated in 1990. It is the Pasarela Pealonal de Anorga, a 25-metre local authority footbridge over a railway line near the Northern coastal town of San Sebastian. The authorities originally wanted the coating to stop vandals carving their names on the structure but in the event it has proven to be an excellent test site for PPA 571. It has of course been subjected to a salty atmosphere in sun and rain over 12 years.  The green structure was coated in PPA 571 whilst the red handrails were originally polyester coated. You can see that the PPA 571 coating still looks "like new" whilst the handrails have had to be repainted three times. In addition here is an area that was deliberately uncoated. You can see that after 12 years by the sea there is no under-film corrosion or blistering.
   The Northern Spanish experience supports earlier performance data from sites around the world, including the harsh environment of the Arizona desert. There PPA 571 has overcome a chronic leakage problem on a ferric cure line in the copper leaching operation of the Cyprus Miami Mining Corporation. The pipes and couplings have to contend with the internal corrosive effect of a cure solution containing sulphuric acid and chlorides as well as external environmental extremes including temperatures in excess of 40 °C.
PPA 571 Data Sheet PPA 571 ES Data Sheet
Independent report for insurance-based guarantee
for PPA 571ES coated items | 
