Hi, I recently bought a Mira flight safe tray 1000x800 mm that needs to be raised. Are Mira riser kits sturdy or wooden frames are considered to be more solid?
Riser kit is fine, probably better. It will give you better access later down the road when you need to service the trap/pipework.
If the kit screws in even better, if it glues they're a pain to lay down while keeping them in place and adjust.