Greenhouses need to be designed to not only capture solar energy but also adequately ventilate extra heat if temps get too hot.
You should always make sure you have adequate vents in the roof of your greenhouse as heat rises and you want that heat to flee.
Greenhouse roof vents work really well because they are located where hot air gathers naturally at the peak of the roof.
If vents in the roof aren’t possible, make sure to at least have a windowpane to two you can open.
Ideally you would like to have cross ventilation therefore two windows upon two sides of the greenhouse work greatest.
However you should not leave the vents or windows open at nighttime as you’ll lose any kind of heat gain and cool your greenhouse an excessive amount of.
And that means you close the vents or windows during the night and what occurs another morning: you forget! Now your greenhouse overheats and if you’re unlucky, you lose some plants.
Or you forget to close the vents at nighttime as well as your plant life suffer if the night time is too cool.
More information concerning Greenhouse Auto Vent could be found below.