Are there any options for something like this? My house has a courtyard/air well and I am initially thinking of tiling it up and putting a glass ceiling over it to make a place for my two pet dogs.

However, am kinda worried that this will make it unbearably hot during the afternoons. Will using perspex or tempered glass make any difference?

Or would I require a retractable non transparent ceiling to go on top of the glass? Is there even such an option available economically?

Thanks.