We have a traditional Derbyshire Longhouse that is rendered and after having it fully painted only a few years ago, at great expense, it was terrible to see the north facing elevation going green with algae. Some 'google' investigation lead us to S&E and whilst I was rather sceptical that the proposed soft wash would work, Scott was keen to convince us otherwise. He was very helpful and was happy to provide pictures of previous successes. We gave it a go and the results were fantastic. It was returned to a newly painted house! At the same time the service was excellent, nice folks, came on time, very tidy. We'll be using Scott again next spring for decking and perhaps front elevation depending on condition. Would recommend.