Topic 7 Landscaping of Pitched Roofs

  • There is no problem of water formation in pitched roofs, so there is no need for a drainage layer, but the soil layer where the plant roots are located is also reduced, so the vegetation layer on these roofs is low.
  • Sloping roofs are more likely to dry out the soil, as there is no accumulation of moisture, so special consideration should be given to the choice of plants.
  • The northern side would be preferable, as the relatively small amount of solar radiation received does not contribute to the evaporation of water from the soil.
  • The main problem with pitched roofs is the slipping of the ground layers.
  • Roof structures capable of absorbing shear forces must be provided.