![]() ![]() By doing so, the heated air warms the greenhouse glass so the snow melts upon contact. With that information you can discuss all of your options with your greenhouse supplier.īackground information for this article was provided by Arcadia Glasshouse. Glass-glazed greenhouses The most common method for melting snow in high-tech glass-glazed greenhouses is to open the energy curtains, which allows the heat to rise to the peaks of the greenhouse before snowfall. A quick trip to your local building department will give you all the information you’ll need for snow and wind load requirements. Small hobby greenhouses are suitable for some applications but should not be considered a permanent structure and certainly shouldn’t be expected to withstand heavy snow loads or strong gusts of wind. ![]() If you are in the market for a greenhouse that will handle heavy snow and wind loads and last a lifetime, you should seriously consider a greenhouse with extruded aluminum framing. The scissor truss design not only adds strength but also, because it eliminates the need for cross ties, allows for additional head room in the greenhouse. Many of the newer greenhouses are utilizing sophisticated engineering designs, like the scissor truss. Some of the older greenhouses use heavy cross ties to meet higher snow load requirements. In locations where snow loads or wind loads exceed the norm, additional bracing or advanced technological designs can be used to create additional strength. Greenhouses built with quality extruded frames will not only be able to meet the wind and snow load requirements but will also be considered a truly permanent structure that is designed to last a lifetime. Generally speaking, greenhouses need to withstand 30 pounds of snow per square foot (an equivalent of about four feet of snow) and wind gusts up to 105 MPH to meet most of the code requirements throughout the United States. These greenhouses are designed to be a more permanent structure. Higher quality greenhouses with extruded aluminum framing will most likely meet local building code requirements. Growers who are looking for a more permanent structure should look for greenhouses that utilize extruded aluminum framing instead of stamped aluminum framing. Most hobby greenhouses are not designed to last a lifetime and will quickly degrade. ![]() Small hobby greenhouses with a stamped aluminum construction generally will not require building permits but will rarely meet the requirements for snow or wind loads. With this information you can go back to the greenhouse supplier or builder to see which greenhouse design will meet those requirements. Regardless of the type of greenhouse you plan to have (stand alone or attached) it is very important to check and see what the building code requirements will be. The very first thing a gardener should do before constructing or purchasing a greenhouse is to check with the local building department (where building codes are issued) and see what the snow and wind load requirements are for his or her geographical location. ![]()
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