A roof can represent 10-25% of the cost of a building, 90% of improper installation procedures are covered from view upon completion of work and defects are not identified until leaks or other problems occur at a later date, which brings us to the fact that roof failures feature high in construction litigation. Bottom-line doing the job right the first time is the way to go!
The most common deficiencies found in metal roof inspection are:
(1) Fastener back out
(2) Panel damage
(4) Seam defects
(5) Missing or damaged fasteners