Newbie query re “water glass”

This is not actually a query pertaining to using water glass in creating a rocket stove but rather about sealing the base of an old aluminium kettle which is leaking (belonged to SWMBO’s gran).
Does anyone know if a layer of water glass poured in the kettle will cure when put onto a wood stove without water in it and when/if cured, will it stay in tact when water is added or will it dissolve?
Sorry if this is not the right place for this query but I was not sure where to post.
Cheers from Down Under.

Hi Lester;
Sounds like your trying to save grans old Kettle.  She would be pleased I'm sure.
I do not have a for sure answer about water glass , I highly suspect that it would leak again when you brought water up to boiling. I could have that wrong.
Did you know that you can get food safe epoxy?  It would work for sure.
As your down under I won't try to give you a link.  Google it up and you'll get plenty of information.

EDIT) After reading your post again it sounds like this is used for room humidity rather than tea. If so any epoxy would work no need for food safe if your not consuming from it.

Thanks Thomas. I don’t really need food safe sealer as we only use the kettle to add humidity to the room when the fire heater is going.
I checked out the epoxy but it sounds like it is more costly than I want.
I will keep looking.

Heat proof silicon is what I would go for. the type used for heating systems or oven doors. you can buy tubes of the stuff, I've fixed an oven door and car radiator with it.