Greenhouses need to be designed to not merely capture solar technology but also adequately ventilate excess heat if temperatures get too hot.
You should always be sure you have sufficient 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 heat gathers naturally at the peak of the roof.
If vents in the roof aren’t possible, make sure to at least have a home window 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 shouldn’t leave the vents or windows open at nighttime as you’ll lose any heat gain and cool your greenhouse an excessive amount of.
Which means you close the vents or windows at night and what occurs the next morning: you forget! Today your greenhouse overheats and if you’re unlucky, you lose some plants.
Or you forget to close the vents at nighttime and your vegetation suffer if the night is too cool.
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