attaching hanging hardware, and/or canvas floater frames, to wedi board panels can be a bit tricky. lynn moor, at mosaicsmalti.com, sells hanging hardware washers for wedi panels, which are an option for hanging. she also recommends gluing canvas floater frames directly, and permanently, to the wedi panel to work around the fact that you cannot screw into the wedi board to attach the frame.

if you are looking for another way to attach hanging hardware, and/or a floater frame to your wedi panel, i will share with you what i have done. i don't like the idea of permanently attaching the floater frame, and i have not tried the washers yet. click on the thumbnails to see a different way, which involves epoxying wood supports to the back of the wedi panel, that you can then screw into to attach the frame and/or hanging hardware. i also epoxy the hanging hardware to the wood, in addition to screwing,

for larger pieces, i would probably use thicker wood, or back the entire panel with a thicker wood backing board.