We made a big mistake about 6 years ago when we applied a Ronseal heavy duty decking stain to our newly errected deck. Not because there is anything wrong with the product but rather because it needs to be refreshed every other year. It's too late now to do anything other than simply continue with the refreshing business but i would like to ask if anyone out there knows of a deck stain that would last a year or two longer before having to be refreshed.