Re: for those who have sunbrella material bow/cockpit covers
There are a few factors that will determine how often it needs to be waterproofed.If it is a color that needs to be cleaned then you will need to re-waterproof it when done cleaning it.Usually a dark colored true Sunbrella fabric does not need to be cleaned each year because you dont see any dirt and the fabric will stay waterproofed for years.I have Cadet gray which is a light color,so I have to clean it each year and rewaterproof it.The great thing about this fabric is that you can use bleach on it with no ill effects to get organic stains out of it including bird crap and mildew.Of course you have to rinse it very well when done.I actually used straight bleach to clean a cover once with no ill effects.Granted it was crappy bleach from the $ store so it was probably equivalent to a 50/50 solution which according to Raven mills is too concentrated .