slate floor cleaning before sealing

[Dave]

I’m getting ready to clean and seal my years-old slate shower. It’s not been maintained and is disintegrating. Does it need to dry out before sealing (how long?) or can it just be surface dry?needs

I’m getting ready to clean and seal my years-old slate shower. It’s not been maintained and is disintegrating. Does it need to dry out before sealing (how long?) or can it just be surface dry?

Needs to be fully dry.

 

[ajn9000]

Appreciate this won't help with the original question - but would sealing the tiles (tops & edges) before laying help to control staining? Then seal again when laid.