Build A Cheap Greenhouse With Two Layers Of Plastic
September 23rd, 2008
If you want to build a cheap greenhouse using plastic with two layers of plastic—one inside and one outside of the glazing frame—with about an inch of space between them, this will provide excellent insulation, and cut the costs of heating your greenhouse.Some of the transparent plastic materials usually deteriorate quite rapidly and must be replaced every year or two though some new plastics being marketed are said to last up to 5 years or even longer.The corrugated types of plastic can be expensive. However, these do have a long life, never need shading, and are not damaged by hail, snow, or such pests as termites. They admit up to 85 per cent of the sun’s visible rays. They are not ideal for the real sun-loving crops—annuals, geraniums, cacti, etc.—but they are just fine for orchids, African violets, anthuriums, rex begonias, ferns, and similar plants requiring medium- to low-light intensities.
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