Do we need a manual roof opening vent for new conservatory?

[Berrie]

We are planning a 4x5m room and it will cost £320.
What about the argon filled glass?

You need roof vents

I have 5 in a room 3x7m

Not sure about argon tbh

We don't' have one although conservatory is only 2.5x4

Just ltos of side windows

You can't keep crayons in there or they melt

You would need trickle vents - supplier should be up to speed

We have one roof vent in our 4x4 conservatory and top openers on all the windows. And a roof fan/light combo thing. It still gets boiling hot in there. We would have two roof openers if we did it again. As the heat rises it cools the room far far more quickly and effectively than the top openers on the windows. Definitely worth the money.

we have one (3.5m 3.5m). It stays permanently open from about May to September.

Thanks everyone, we are going to have it.
Might not have any floor for ages though!
Any thoughts on flooring...all I know is that I don't want hard tiles.