Gutters should be pitched properly, fastened securely and free of debris. Downspouts should be in good operating condition and should distribute water away from the foundation. During the interior inspection, be especially alert for water stains on ceilings or wall, around fireplaces or chimneys, and in the general area of roof junctions. Many roof defects are discovered during a careful interior inspection. One of the greatest enemies of roof covering is heat.
Excessive heat is usually a product of a poorly ventilated attic.
Good attic ventilation is important to all roof coverings, as well as roof framing and sheathing. Be alert to restricted or insufficient attic ventilation, and report any deficiencies. Attics should be inspected with a good flashlight and a lot of diligence. Keep in mind that roof leaks tend to occur in typical and predictable areas. The most common leak is in a valley.