High green walls ("Vertical Greening") appear in stark contrast to a small wall trellis. Often they are desired for ecological reasons or even requested and ordered. Precise design, stable growing structures as well as continuous care are especially important in this concept of greening, or else your vision and reality will not be in harmony . The following aspects of high greening are highlighted, for more examples, see 'Bauhaus style', 'growing walls', balconies and posts.
High facade gardens can be created with or without a support system. In the first case it's about a big effect with little effort. Self clinging climbers like Ivy and Boston Ivy are a logical choice. To avoid structural damage, many builders resort to climbing plants that are "tamed" by trellises. Whether taming and the forming of plants really takes place depends on its maintenance. Following plants are suitable: Annuals, Hops, Akebia, Dutchman's Pipe and wild vines. Vigorous twiners such as Wisteria, Fleece vine and Bittersweet need lots of maintenance. If unkempt these plants accumulate masses of dead and dry foliage that, when close to windows, can be a fire load. In case of wet foliage freezing over these plant masses can be a heavy load spreading across the entire surface endangering the stability of the system or support. In case of doubt, forego vigorous climbing (twining) plants.
Besides the usual loads that cable tension, weight, etc., produce, plants are, after growing up 8 m in height, a wind catcher and a special "burden" to take under consideration when they lie at the buildings upper corners. Instead of using plastic dowels here metal metric dowels or adherence would apply. Particularly at risk are again strong growing plants with thick foliage rolls that are not trimmed regularly and offer a great surface for wind to strike.
Vandalism is to be expected if greening is done in problem civic areas or hard to supervise and control areas. Therefore, FassadenGrün primarily recommends cable system of the heavy and massive construction. In addition, to prevent the possible stepping and weight support of vandals -'ladder effect', use horizontal ropes or other trellis elements only from an altitude of approximately 1.80 or better 2.50 meters as described for the cable system 4030. If necessary, the Solitairy plants are then "guided" with sharp bamboo sticks.
High greening structures made of metal should be attached to the lightning protection system of a house or building, if such exists and this is necessary. This is all the more the case if: • the metal greening structure is massive and rises up until roof height • Is on a building which is exposed to lightning strikes • Is located in a building that towers over others, or otherwise is exposed to lightning and is made of combustible materials such as wood. For the elegant trellises of FassadenGrün - as also the case with awnings, mailboxes, booms, signs and Sims covers of sheet metal - will not need a lightning rod. If in doubt, ask an expert or specialist planners.
Private home developers and contractors are advised well to do without a high vertical green up when in case of any doubts. If professional planning, statics calculation, and all subsequent costs are ensured, however, nothing stands in the way such greening work!