Roofs are the most significant part of the buildings and are exposed to different climates. Roof proofing is one technique that acts as the barrier to various environmental changes and significantly increases the roof’s longevity. As there are different roof types like pitched, sloped, and flat, each needs special attention and proofing to last longer. The flat roofs need some expensive and heavier water proofing to prevent leakages for roofs than the sloped and pitched ones. The materials used for damping should also be explicitly chosen that meet thermal insulation and water proofing requirements. Jacob Engineers are one of the best engineering consultants in Chennai who promise to provide leak proof roofs..
One of the significant problems we consider for roof leakage is water stagnation. Hence, in this post, look out for some water proofing methods to make the roof resistant to environmental conditions.
The foremost damp proofing method is the finishing. So, most of the flat roofs in this modern age include reinforced cement concrete or RCC, except these roofs should be water-proofed by the proofing method. In many constructions, the finishing for the roof surface is made at last while laying the cement concrete. So, the finished water proofing method includes 1:4 motor proportions of the water proofing materials. There will be one part of cement with four parts of sand in volume.
Similarly, it is one of the basic requirements in flat roofs to have adequate slopes for the stagnant water to flow out. The slope should be designed so that water should drain off quickly and have a high velocity with respect to gravity. So, it is ideal to have a slope of 1 in 100 or more steeper depending on the type of proofing method effectively.
Laying concrete and flooring:
The RCC slab is left rough and layered with concrete in this method. The concrete used for the RCC slabs are brickbats lime concrete in the ratio 1:2:4 or brickbats cement concrete in the ratio 1:8:14. The engineers use materials like tiles, Indian patent stone, and terrazzo for flooring the concrete. The parapet wall and roof junction are provided with a convex joint, and the concrete is laid around with 10 cm thickness.
Similarly, adequate openings should be provided on the roof for the water to get drained off quickly. Factors to consider when choosing the right size of openings,
- Size and number of openings depend on the region’s rainfall.
- The spacing between the rainwater outlets should not be more than 6m.
- The average size of the rainwater pipes should be at least 10 cm in diameter per 30 sq.m.
Jute cloths and asphalt:
In this type of water proofing method, the first layer is filled with hot mastic asphalt on the roof surface, and a layer of jute cloth is spread over it. Then again, a layer of asphalt is placed, and the jute cloths are sandwiched between the two layers. Lead sheets are inserted at the roof and parapet wall junction.
Thus, these are the waterproofing for the roof to withstand extreme weather conditions. Jacob Engineers the outstanding structural design companies in Chennai that provides quality and structural designs for structures for longer. We even provide training on structural design engineering for the budding engineers for their future endeavours.