Hi we are in the final stages of renovating our house, we are now turning our attention to the flat roofed veranda - underneath this is a pool, which has not been used for sometime due the condition of the room it is in. The current flat roof has leaked for a number of years and we are now looking to replace it. I would welcome you suggestions about the best way to water/weather proof this area - it will be used a lot so not just a roof. I have attached a photo so you can see the scale of area I am talking about .