about 8.5 years wfp now wish i d started earlier about 22 years trad ,
i have a guy on our list customers who bought poles and di vessel from the states about 15 years ago use to buy resin direct for chemical companies, he has never gone van mount, resin only straight from tap uses 4 sacks a month, he wont change! i would say his the oldest wfp, er in uk.
i brushed shoulders seeing him a few years after i started cleaning windows using the kit thought he was completely off his trolley. how wrong i was!