Disposal of old conventional materials can be difficult and costly. The use of prepainted metal can often solve this problem. Non combustibility should offer protection from external hazards such as wind-blown sparks or lightning when properly grounded. Wind Resistance Properly installed prepainted metal roofs should not need periodic repair or replacement due to wind damage or storms. Water Absorption Properly installed prepainted metal roofs do not absorb water or moisture.
Water can damage most other roofing materials by rotting, cracking, or in the freeze-thaw cycling.
Sound Deadening Rain noise on a metal roof is not a factor when installed over a flat deck and insulation. The color of a prepainted metal roof may be changed to coordinate with new color schemes of siding and trim. Repainting can also lengthen the life cycle of a metal roof. Many other materials may require replacement and costly disposal. Energy Efficient Consider the radiant heat reflectance of light colored metal in warm climates, resulting in savings in cooling costs.