After roofers install a new roof, inspect the shingles for proper alignment and ensure there are no visible gaps or damage. Check the flashing around chimneys, vents, and skylights to confirm it's securely sealed. Ensure gutters are free from debris and properly installed to direct water flow. Examine the attic for any signs of leaks or moisture, indicating the roof is watertight. Look for consistent roofing material color and quality. Inspect for proper ventilation to prevent moisture buildup. Confirm the roof's edge is neatly finished with no loose materials. Lastly, review the warranty details provided by the roofer. Visit: What to check after roofers installed new roof?