IGNOU MMPN 3 2026 - Describe the materials used in the application of wate

Question

Describe the materials used in the application of water proofing layers on thatched roofs. Also comment on the expected costs justifying its viability.

09 Feb 2026

Answer :

Word Count : 481

The materials used in the application of waterproofing layers on thatched roofs are essential to protect the structure from water ingress, which can lead to deterioration over time. Traditionally, thatched roofs are made from natural materials like straw, reed, or palm fronds, which are prone to absorbing water, thus compromising their longevity. To enhance the durability of these roofs, a variety of waterproofing materials are employed. One common material used for waterproofing is bituminous membrane. This is a thick, tar-like substance that is spread over the thatch or installed as a layer between the thatch and roofing structure. Bituminous membranes provide a durable, flexible layer that can resist water penetration. It is especially useful in areas with heavy rainfall or high humidity. Another popular option

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