Bituminous roofs and flashings oxidize and dry out as they age, becoming increasingly brittle until they inevitably split open from natural contraction and expansion cycles. These and other forces cause roofs to become increasingly susceptible to moisture entry as they age.

Once moisture enters the system, the roof insulation quickly deteriorates to a point where the roofing and insulation must be completely removed before the roof can be replaced. With timely intervention, it is possible to avoid the necessity of costly and disruptive roof removal.