Second layer: If there is just one layer of existing roofing, it might be appropriate to just lay the next layer over the top. This will save lots of time and labor charges for the tear-off part of the task. More than two layers will end up being too heavy for the structure and a tear-off will be required.
This is the most common reason for water leakages from A/C devices and really it can be resolved by a roofing contractor but we are frequently called out to spot such situations. COOLING AND HEATING platforms normally sit about 3 feet above the roofing and the roofing system product wraps up vertically to cover the platform. The point at which the roofing material bends to go verti