When to repair or replace?
In most cases, replacing the roof can be an expensive affair. So, most property owners try to increase the life of a damaged flat roof by continually repairing the surface. However, this option can ultimately cost more in the long run due to increased staff attention and damage caused to interiors and structural systems.
According to the NRCA/ARM, a manual roof replacement is advised when the roof has exceeded its service life and shows evidence of advanced deterioration like wet insulation, or various leaks of a serious nature seen in the roof membrane. Replacement, instead of restoring the old roof with a new membrane, is also essential when the existing roof membrane proves to be an improper substrate for a new roof covering.