Rated, in Rated Sheathing, basically means that it’s a conformance stamp that the material is up to the APA’s specifications for sheathing. Each sheet should have a stamp on it with compliance info.
It's already "treated;" however , if you do not cover it with shingles or at lease paint, it won't last long. Please be aware: Pressure-treated lumber can take weeks or even months to dry. Once the wood absorbs water on the surface, it's read for paint. ... Our experts recommend priming with a latex primer and a compatible exterior latex paint, also known as water-based paint. We recommend you avoid oil-based paint.Sep 3, 2019 Five Star Painting › blog › painting-... Painting Pressure-Treated Wood | September 2019 - Five Star Painting
Yes, it would work but the Kerdi Board installation video shows it being attached to the framing studs or using it as a wall its self. Here's the link: https://www.schluter.com/schluter-us/en_US/Membranes/Waterproofing-(KERDI)/Schluter®-KERDI/p/KERDI
no but it gave me quite the rash on my nards
bridge ehh? you need a permit. Im calling code enforcement.
that depends on how much water it is exposed to. As with all PT lumber it is not intended to be contentiously wet. Example it was used as underlayment for an outdoor bar top it worked great for several years until the grout stared to crack and allow water to get to the ply then it started to determinate and destroyed the tile top.
I have cut & past this from the EPA about this and other boards treated this way . "Pressure-treated wood should not be burned under any circumstances. The fumes can be toxic and the ash is very toxic. Do not use pressure-treated wood for making cutting boards, or for any food preparation surface.Do not chip it for use as mulch . Do not bring treated wood to a compost site . " Older wood had arsenic it , I don't know what is used to treat this wood but the all the different ways they treat wood are nasty if burned . hope this helps .
marine plywood would be my choice