Only bought it a month ago, seems good. Only downside is that it attracts dust, still my fault, why use it in summer? But it seemed worthwhile to put only on this, then that, Oh, and that, same old story, once started. Ended up doing the house!!!!!!!!!!!!!
OK OK I'm turning into an anorak.
According to their website it should last for a year in non exposed situations, which is why I covered every screw,bolt electrical connector I could find.
At the demo in Beaulieu, they were running a small telly semi imerged in the stuff.