What To Check After Roofers Installed New Roof After roofers install a new roof, it's essential to conduct a thorough inspection to ensure the job was done correctly. Check for any visible gaps or misaligned shingles that might indicate improper installation. Inspect the flashing around chimneys, vents, and skylights to ensure it’s properly sealed. Make sure all nails are secure and not protruding, as this can cause leaks. Verify that the gutters are properly aligned to direct water away from your home. Look for any debris left behind from the installation. Finally, inspect the attic for signs of water leaks or moisture buildup.