Similar to other materials flat roofs with asphalt expand and contract with changes in temperature and weather.
Signs flat roof needs replacing.
Keep an eye on your rooftop to make sure its in ship shape especially after heavy storms.
Adhesion failure bubbling and blistering.
This results from an adhesion failure in the roof and the bubble can fill up with trapped air or water.
If your roof regularly develops pools of water you should consider having it replaced.
7 signs you need a new roof start inside.
When left unchecked this expansion and contraction will cause the flashing to pull away from the corners and edges of the roof leading to moisture getting trapped and leaks appearing on your ceiling.
Call a roofer for replacement.
The largest issue with flat roofs is pooling.
If caught early enough this problem may be repairable.
Another defect that you can notice without needing to be an expert in flat roofing is blistering and bubbling.
Extensive pooling of water.
It means that that roof has been damaged beyond the point of no return.
With time the roofing materials lose their elasticity causing cracks and bubbles on the roof s surface.
If you have a tar and rock covered roof and the wind has blown off the tar paper and exposed the undercoat of the roofing you should also probably replace your roof.
If you find torn places in the moisture barrier and you have leakages coming into your home through the ceiling it is a sign that you need to replace the roof.