I have been washing vinyl houses amongst other things for a couple of years now and still learning, but was wondering if I have other options for getting vinyl clean. I use a soap I get from my power wash supply company and I also mix it with SH. I have noticed on some of the houses we wash that the SH has faded the vinyl somewhat and it seems to discolor Trex decking as well. Are there other options to eliminate the use of SH but still clean the mildew and mold from the siding with out fading it?
Part two of my questions is, has anyone used a product called "Bleach Wash Finishing soap" and if so does it bring back the faded color caused by the SH?