ᐅ Sealing a flush shower tray on a solid wood or dowel wood subfloor

Hello,

could someone briefly explain how a flush shower tray is sealed on a solid wood ceiling or a dowel wood ceiling? The shower tray itself is sealed against the wall using sealing tapes and liquid waterproofing. But how is the area beneath the shower tray sealed in case water penetrates downwards? With concrete ceilings, the floor is coated with liquid waterproofing and the drain is sealed with sealing tapes (is that correct?). But what special considerations apply to a wooden ceiling? Many thanks

We had a floor insert installed, including a drain channel and a siphon. It was as large as the shower area, and tiles were then laid over it.

I’m not thinking of a tiled shower, but rather a shower tray that is very shallow and almost flush with the floor. It usually stands on feet or something similar, and waterproofing underneath the tray is necessary as a precaution.

world-e schrieb:
But how is the area beneath the shower tray sealed in case water seeps downward? For concrete ceilings, the floor is sealed with liquid membrane

No, nothing was sealed there.
Our shower tray is mounted on a frame; if water happens to reach this frame at the edge of the tray, it is directed to the drain through an additional outlet. For example, you can look up Kaldewei ESR II. Otherwise, it’s a standard installation with a connection to the trap and the drain pipe.