Cleaning Stained Deck Joist Clean Solution?

Originally Posted by slickshift How long from Stain The Joists to Install The Deck Boards? How long from Install The Deck Boards to Big Rain? What kind of composite deck boards? What kind of fasteners?

Hi Plazaman I've been thinking about this and I'm only guessing but the rain storm may have little to do with the problem.Could it be that this streaking has to do with the joists weathering between the old boards.Then when it was painted bleeding through to show as streaks on the joist.You said the same thing happened on the dark joists but not as prominent this could be for the very same reason.The fact that you can't wipe it off says to me that it is bleeding.I've seen timber left in the weather and then painted and the stains bleeding through.So how to tell what it is and this is just an idea paint a section on 2 joists and cover over the boards on one(a sheet of plastic or something similar).Leave them the same amount of time it took you to notice the streaks in the first place and come back and take a look.If both joists are streaked then its bleeding if both are clear then another coat of paint is the answer,if the covered one is clear and the other one streaked then the problem is with the boards.If it is bleeding from the joist there are people better qualified here than me with paints to give you an answer to that.Any way good luck I hope you crack it man,It would be interesting to know what the out come was.Good luck Billy.