I recently re-did my whole house flooring (carpet in bedrooms, tile everywhere else) and have some extra materials that I would like to save in case a tile chips/carpet needs repaired. My garage is already pretty full of camping gear/tools/cars and these are things I plan to rarely (if ever) access, which is why I want to store them in the attic.
My attic is unfinished (single story house) with engineered 2x4 trusses and blown-in insulation. Location is desert south west, so no snow loads to account for. My understanding is that the bottom chord of 2x4 trusses isn't designed to hold anything more than drywall/insulation/light fixtures, so my thought was that I would lay some OSB right on top of an interior wall so that the wall is what bears the weight rather than the bottom chord. I'm thinking we are talking probably 200lbs of carpet and tile, I was going to get some 7/16 OSB.
Is this a bad idea?