who are familiar with the product and experienced Prolonged exposure to UV from the sun causing in the specific construction. deterioration of the material Movement stress caused by temperature Using approved contractors gives access to trades variation from day to night people with specific skills and experience in water Weak structure of the selected material proofing for green roofs and walls. Using approved contractors can also improve access to available The physical onsite damage can be eliminated by product warranties. restricting access and work practices over the membrane once installed and also by providing a protective layer over the membrane immediately after the installation and certification. are three common methods of protecting the membrane: Protective mat Protective board or foam boards Protective concrete screed Protecting the waterproofing layer Protective mats are usually made from synthetic fibres of polyester, polypropylene or polyethylene and by its very nature are flexible, soft and porous. The mat should be between 5 to 10mm thick to provide the cushioning effect required, but in heavy use areas additional protection may be required. Protective needs to be semi-rigid, durable and As for any roof, protecting the waterproofing made from material that does not deteriorate in membrane from physical damage is one of the most water, such as 6mm cement board. Foam boards important tasks once the membrane is installed and are typically made from expanded polystyrene certified watertight. It is important that the installed (EPS) or extruded polystyrene (ExPS) 25-50mm waterproofing membrane is protected both before thick and laid loosely on the membrane. Coreflute and after the growing media and plants are or polyethylene (LDPE) sheets may also be used. installed. Foam boards may need sealing to stop water in the material. There are a few common causes of failure to the membrane such as: Protective concrete screed may be applied over the top of the membrane in a mixture of cement and sand, to a ratio of 1:3 respectively. The minimum Physical damage such as onsite construction thickness is 25mm, as any thinner will crack and activity like cuts, and penetrations from disintegrate, thus allowing damage to the working over the membrane membrane. The screed should be laid in such a
who are familiar with the product and experienced in the specific construction. Using approved contractors gives access to trades people with specific skills and experience in water proofing for green roofs and walls. Using approved contractors can also improve access to available product warranties. As for any roof, protecting the waterproofing membrane from physical damage is one of the most important tasks once the membrane is installed and certified watertight. It is important that the installed waterproofing membrane is protected both before and after the growing media and plants are installed. There are a few common causes of failure to the membrane such as: Physical damage such as onsite construction activity like cuts, and penetrations from working over the membrane Prolonged exposure to UV from the sun causing deterioration of the material Movement stress caused by temperature variation from day to night Weak structure of the selected material The physical onsite damage can be eliminated by restricting access and work practices over the membrane once installed and also by providing a protective layer over the membrane immediately after the installation and certification. are three common methods of protecting the membrane: Protective mat Protective board or foam boards Protective concrete screed Protecting the waterproofing layer Protective mats are usually made from synthetic fibres of polyester, polypropylene or polyethylene and by its very nature are flexible, soft and porous. The mat should be between 5 to 10mm thick to provide the cushioning effect required, but in heavy use areas additional protection may be required. Protective needs to be semi-rigid, durable and made from material that does not deteriorate in water, such as 6mm cement board. Foam boards are typically made from expanded polystyrene (EPS) or extruded polystyrene (ExPS) 25-50mm thick and laid loosely on the membrane. Coreflute or polyethylene (LDPE) sheets may also be used. Foam boards may need sealing to stop water in the material. Protective concrete screed may be applied over the top of the membrane in a mixture of cement and sand, to a ratio of 1:3 respectively. The minimum thickness is 25mm, as any thinner will crack and disintegrate, thus allowing damage to the membrane. The screed should be laid in such a