Cooling down summer conservatory heat?

Frank99

Paint starting to crack on conservatory wall that has hot sun through the roof on it regular, i have heard about cooling tinted films being effective, i just want to protect the walls from the green house effect heat, don't know if roof blinds are any good, any good ideas for keeping conservatory cool in summer?

Owain_Moneysaver

Ceiling vents at the highest point. 
Reflective film will have some effect.
Blinds won't, as they're internal, and the solar heat has already passed through the glass before it hits the blind. 

TELLIT01

Blinds might reduce the effect of direct sunlight on the walls, and some are also reflective and could have some, limited effect on internal temperature.  Roof vents are the most effective method of preventing overheating.