If the surface is properly fixed it can be used together with bi-axial glass cloths and the repair can be very powerful. The wooden roofs as well have a great sturdiness of about 30 many years and even more. This is just the suggestion of the iceberg when it comes to flat roofs. https://www.alkhazana.net/2024/06/24/things-to-offer-for-flat-roof-from-a-denver-roofer/