Hello everyone, I see many of you discuss turf, garden, lawn building and installation here, and I like the idea artificial grass is very useful for houses, patios, and small gardens. I am curious about the underlying structure and support under turf, especially if it is installed on roof, deck, or concrete base. I sometimes work in building industry and run expert drywall estimating services , so I know the importance of correct measurements, foundation, and structure stability. I think similar careful estimating is useful when installing turf over surfaces where structure and load matter, like rooftop lawns or deck areas. I want to know if anyone here has experience installing turf on non-ground surfaces and how you checked the structure or base weight capacity, what kind of support or waterproofing you used to avoid moisture or damage, and how you evaluated cost for materials and installation. Any advice, articles, or experience shared will be very helpful.