The answer to 'what causes roof replacement' is that roofs typically need to be replaced every 20-30 years due to normal wear and tear from weather, age, and damage. As roofing materials like shingles, tiles, or metal panels age, they become worn, cracked, and less effective at protecting your home. Factors like severe storms, heavy snow or ice buildup, and even tree branches can also cause significant damage that requires a full roof replacement.
Replacing your roof is an important investment to protect your home, prevent leaks, and maintain its value. It's generally recommended to have a professional roofing contractor inspect your roof every 5-10 years to assess its condition and provide guidance on when a replacement may be needed.