Cracks and splits
Typically the result of hailstorms, sun-weakened material, or freezing temperatures
Bowed or buckled siding
Commonly caused by summer heat, snowmelt seeping behind the wall, or improper nailing
Separated seams or corner gaps
Allows moisture to slip behind the siding and quietly damage sheathing and framing
Patchy or mismatched color
Usually a sign that a past repair used siding from a different batch or brand
Musty smells or mildew along exterior walls
Usually means water has worked its way in and isn’t drying out
Spongy or soft-to-the-touch boards
Often signals decay underneath, a frequent issue on older homes with wood siding

