The easiest & most reliable way to avoid this is to set up automated greenhouse vent openers.
The last thing you want to have happen is for your plants to perish because they actually were cooked.
The sun is a powerful source of energy and a small greenhouse can reach blistering temperatures in just a few hours.
After all that is how they are designed. To capture solar energy.
greenhouses have lightweight roof vents and could require a more powerful vent opener to maintain them closed or prevent them getting impressed – check before you get.
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If you have a greenhouse, you know how quickly it can heat up on a sunny day, even in winter.
You can make sure your greenhouse ventilation is continually regulated during hot summer months, whether you’re at home or not, by installing an automated vent opener. It includes a wax that expands when heated, opening the vent. When the temperature falls, the wax agreements and the vent closes.