Use pebbles or pumice as a base layer to allow drainage to the low point of the roof. Why natural health products for chickens are about to take offĭrainage is important as excess water (not absorbed by the substrate or plants) must be able to leave the roof. However, living roofs require an additional layer of waterproofing in a material which plant roots cannot penetrate. Most existing structures such as sheds will have a waterproof roof (tin, plywood or bitumen). Small scale living roofs require four layers: If the existing roof is unable to take the extra weight, consider reinforcing it with additional supports. If you are unsure of the loading the roof can take, consult an architect or structural engineer before you do anything else. Simple lightweight living roofs weigh between 60-150 kg/m2. The plants and substrate slow runoff by absorbing water thus greatly reducing drainage flow rates.Ī living roof will cool and humidify the surrounding air and can create a beneficial microclimate within their immediate area. The immediate water run-off from a roof can be reduced by 50–90% depending on the living roof design. Large scale projects will probably require advice from specialist firms. These small-scale projects are easy so long as some general principles are followed. Words, research & design by Renee Davies, Dean of Engineering & Construction and Infrastructure at Auckland’s Unitec.Ī living roof is an attractive and an ecologically beneficial feature on garden structures such as sheds, garages, chook houses and letter boxes.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |