The type of damage a roof sustains is typically caused by moisture or weather. Seasonal changes play a role in the deterioration of roofing materials, and the roof begins aging immediately after it is installed.

Weather Damage and Fatigue Water Damage

Water damage is the most common cause of roof problems. Research has shown that an inadequately ventilated roof area prevents air movement, which increases the moisture content in the air. Moisture causes corrosion, deterioration of insulation materials, and expansion and contraction of the wooden support structure, which impairs the performance of shingles or other roofing materials. The resulting gaps cause the roof to leak, which results in more damage.

Extreme weather incidents such as severe storms, high winds and heavy rain can dislodge shingles, but even everyday weather has a negative effect on a roof. Summer sunshine reflected off the roof can cause the roof’s temperature to rise, and the arrival of a cold front or a thunderstorm causes it to drop rapidly. The shock of such expansion and contraction places a strain on the support structure as well as the cladding, causing fatigue and deterioration.