Mr. Bharat Aggarwal
What Houzz contributors are saying:
Toughened glass This type of glass is highly resistant to weather conditions and is used to cover large spans to achieve a seamless look. Each glass piece can be manufactured to a maximum width of 20 feet and a maximum height of 12 feet. In case of damage it breaks into very small fragments that are less harmful than the sharp shards produced by standard glass. Toughened glass finds wide applications in structural glazing, partitions, frameless doors and so on.Pro tip: Ensure that the glass is cut to proper size and all the holes are drilled (for frame-less doors) before it is toughened. Note that no modification is possible after production of the glass piece.
1. Check the load-bearing capacity of the roof slabThe first step is to determine if your roof slab is strong enough to handle the load of a terrace garden, including the weight of the soil, waterproofing systems, plants and seating. Sunil de Sousa recommends consulting a professional to accurately analyse your structural system and determine the right location for your rooftop garden. This will depend on the location of your load-bearing walls and columns. In some instances, such as in the case of a cantilevered roof, the slab can support less weight.2. Essential pre-treatmentsIn any terrace garden, care must be taken to plan drainage points and prevent stagnation of water. Water stagnation and seepage can cause cracks in the roof slab and long-term structural damage. To prevent this, de Sousa says that the roof slab should be first treated with a layer of screed concrete (a thin layer of cement and sand or fine aggregate that makes a smooth, level surface for further treatments) and then waterproofed with a chemical compound like bitumen. If one is using planter boxes, these compounds can be applied to them before filling them with soil. For proper, efficient drainage, de Sousa recommends using a layer of PVC drainage cells, topped with a layer of geotextile fabric (a synthetic, absorbent gardening fabric). The soil is then poured on top of these two layers.See more terrace garden designs from around the world