A protected membrane roof (PMR) is a roof where warm protection or another material is situated over the waterproofing film. Current green roofs are a sort of ensured film roof. flat roof repairs advancement has been made conceivable by the formation of waterproofing layer materials that are lenient toward supporting a heap and the making of warm protection that isn’t effectively harmed by water. Often, inflexible boards made of expelled polystyrene are utilized in PMR development. The central advantage of PMR configuration is that the covering shields the waterproofing layer from warm stun, bright light and mechanical harm. One likely burden of secured film roof development is the requirement for primary solidarity to help the heaviness of counterweight that keeps wind from moving unbending froth boards or the heaviness of plants and development media for a green roof. Notwithstanding, when flat roofs are developed in mild environments, the need to help snow load makes extra underlying strength a typical thought regardless.
Green flat roof :
Grass or turf roofs have been around since the Viking times if not far prior and make for an enlivening and tough roof covering. Green roofs have been made by keeping dirt or other development media on flat roofs and cultivating them or permitting them to self-seed as nature follows all the way through. Upkeep as straightforward investigation and evacuation of bigger establishing plants permits these roofs to be fruitful in that they give an amazing covering and UV light boundary for the roof waterproofing