Hobby greenhouse kits and portable greenhouses come standard with free delivery and expert technical advice, so browse our selection of Hobby Greenhouses and get the one that’s 
right for you.
Open roof greenhouses give a environment for plant growth when the outdoor weather conditions is suitable and an artificial environment when it’s too hot or cool. Opening the roof over the plants increases light intensity which can help to control the growth habit, flowering and crop timing. In addition, it Gearbox For Greenhouse reduces electrical power costs as expensive fan cooling isn’t needed.
Several methods are used to open the roof. Some producers make a roof that opens by rolling up the single or double layer of flexible plastic material glazing that operates the length of the greenhouse bay. A little gear electric motor rotates a shaft that winds the plastic on to it just like a window color. A light, second framework over the structure secures the plastic-type from bellowing out during windy weather. Starting and closing the roof could be either manual or automatic. Each part of the roof could be controlled independently for flexibility in cooling.
Folding roof greenhouses work well in snowy climates as they can be tightly shut during cold weather. Most designs use standard vent hardware. Some possess panels that hinge at the gutter and open upward. Opening is nearly 100%. Others possess panels that are hinged at the ridge and one gutter and slide sideways on teflon bearings. Opening is about 85%. Most designs use rubber gasketing to seal the joints. Glazing can be cup, polycarbonate or film plastic. Some manufacturers give a movable gutter to gather rainwater when the roof is definitely partially open. Wind sensors should be set up to close the roof in stormy climate. Movable shade is generally installed with the open roof design. It reduces the heat load by reflecting the suns rays back out. The shade curtain ought to be of a porous design to allow heat to escape. In northern climates a power blanket may also be installed to reduce heat loss during the winter.
These structures consist of a steel frame, flexible glazing and cable support. Woven UV stabilized polyethylene film creates a watertight glazing. According to the cropping system, bracing of the framework could be external cables attached to deadmen, internal compression braces or trusses with cable X bracing. Flat roof designs are used where there is little rain or snow. A-roof styles shed the rain and snow to an internal gutter system. Styles which will carry up to 35 lb/sq ft snow load and 100 mph wind loads can be found. The roof opens in sections by shifting the industry leading of the curtain. One gear motor will deal with up to 50,000 sq ft of roof Heating is more challenging than in a conventional greenhouse due to the single layer plastic material and greater infiltration through gaps and cracks in the seals.
These small greenhouses offer extremely easy installation. Available in various sizes, get a mini greenhouse or a big portable greenhouse today.