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LET THE SUN SHINE IN!GLASS GREEN HOUSEDepending on what sort of green house you decide to build, building a green house can be expensive. The materials you use determine much of that expense, a glass green house, a polycarbonate green house, the size of the green house, and the eventual uses are all factors in determining cost. A glass green house is the most common green house around. Glass allows in the greatest amount of natural light, however, it also loses more heat in the colder months than any other material. You can insulate the glass against this heat loss with plastic, allowing for an air pocket between the plastic sheeting and the glass. This will reduce the heat loss of your glass green house by up to 20%. There are a variety of framing options for your glass green house and the structure is fairly universal between wood, metal, or plastic frames. All of them are designed to sit on foundations of varying sorts with a floor installed which makes climate control easier, as well as a more comfortable working environment. Your glass green house needs special handling depending on the time of year. As mentioned earlier, in the colder months plastic insulation will be needed to reduce heat loss. In the summer, when the weather is hot, a whitewash on the glass will prevent the suns rays from becoming too intense and damaging the plants and seedlings. With a glass green house you will need to think about the months when the weather is the hottest. Running Hot And Cold Heaters are designed to keep your glass green house at a constant temperature by use of a thermostat. Electric powered heaters are the most common, as heaters using propane or heating oil would have to be properly vented to avoid damaging the plants. Conversely, venting is required during the hottest months to avoid “cooking” the plants in high heat. Another of fact for a glass green house is it should be facing east to west so that it may accumulate the greatest amount of sun during the winter months. Also consider the prevailing direction of the wind. If it is primarily from the west, you will want to have the door facing to the east to avoid a sudden burst of cold air on the plants when you enter your glass green house. There are roof vents available that require no electricity, which is beneficial if your glass green house is far away from your power supply. As heat in the greenhouse builds up, the canister of the vent causes an arm to move, opening the vent. As the temperature drops, the vent will close. The roof style of your glass green house is another consideration as it should be slanted enough to avoid snow build-up and allow for proper run off of rain. |
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