we have several smaller and and some of the larger greenhouses at work are shaded with aluminet or some cheaper version of it. all shading is inside, a motor opens and closes the curtain material. some of the houses have aluminet on one side and black cloth on the other (for controlling the time duration of light at certain times of year) and others have just black cloth (installed before aluminet or aluminet/black cloth was made). the houses that have shading cloth or black cloth are much hotter than the houses with aluminet. the curtains are pulled open and closed between two sets of plastic line which hold the curtain in place, and are fixed on one side to each rafter. for the smaller greenhouses that have a triangular roof shape the curtain follows a triangular shape (resting on the curtain strings) while the larger houses with opening roofs rest flat on curtain strings. you can get hand cranks to manually open and close the curtains, but even if you have a small house it's a lot easier if you have a curtain motor. if air is drawn up through the roof for convective or forced air cooling, you need to leave the curtain open around 20% so that the air can vent out properly. aluminet reflects the light and you will get some upper rafter heating, but you would have that with the light coming in anyhow and if you didn't have air movement way up in the roof then heat would pool; it's much better to have the heat up on top than heating your benches, floor and plants because they all have more mass to collect and store that heat; a few rafters above aluminet cover does get very hot but doesn't have alot of mass to hold very much total warmth. greenhouse can be fairly 'bright' using aluminet than shade, so that generally light is getting through; but important thing to consider is that if your plants were so warm from very bright light, then photosynthesis has already stopped long ago, so having the shading from aluminet isn't really going to hurt plant growth. the aluminum strands will 'rust' a little over time, so they won't be quite so shiny, so that may help keep your neighbors and the aliens flying above from being quite so botheredI can't say which would be better for outside shading: aluminet or % shading since the shading cloth would be outside and the heat probably wouldn't collect and bother things inside to a great degree but if I had a greenhouse that I needed to shade/cool I'd be looking long and hard to find a way to use aluminet over anything else (it's also lightweight material so not heavy for the structure to hold or to manipulate by hand, which is why you need strings on bottom and top to keep it from wafting around between the rafters in a breeze)
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Just got - not installed yet until I can make the time. Just draped/laid pulled over and resting on top of my waterproof heavy duty outdoor wooded kitchen/barn roof tarp. Obviously we all know for roofing; we want ventilation air space between layers. N other words: We all know for ROOFING ; we install this AT LEAST 1 foot higher than our tarp roof, but 5 feet higher idealy. As the more separation, the FARTHER AWAY the damaging heat u v rays are from the roof keeping the roof cooler. This temporary quickly thrown pulled over way shown here is NOT INSTALLED YET PROPERLY AT ALL; yet it instantly deleted the painful dangerous part of the HEAT under my roof proving to me:: Once I get it properly installed; it's gonna 100% match it's marketing words. N other words: This is an ideal solution for our death prevention toolbox. It works. My interest is "electric grid deletion survival" and this is a must for emergency home kit like mosquito spray and water purifying tablets. I'm using Paracord for eyelets to tree's and obviously 1 fat 5/8 rope for roof truss makes tarp roofs mirror image angles as like house roofs. As ur aware there's tons of levels of shade; and tons of shade worldwide is not shade humans/animals can survival under. This products brilliant, directly engaging whether u & i heatstroke die or live. And discomfort level's. ALL above is my particular tarp materials application. But how can standardized shingle house roofing be any different? Attic's without exhaust fans EMERGENCY need this product laid on & over shingles ASAP. But how long lasting is this product I &#; wonder? So I got it 2 put above my roof like u c with sum mobile homes- layard roofs. I've found two higher performance than this one but nothing takes away from this one because REFLECTIVE is game changing must have for professional shade. If I can get a year out of it B4 rotting I'm satisfied cause look what this invention does. This is minimum requirement in Power Line's Broken event living outside. Average Shade will get u heatstroke killed now.
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