The answer to 'architectural shingles worn out' is that architectural shingles typically last 20-30 years, but can wear out prematurely due to factors like weather exposure, poor installation, or lack of maintenance. Common signs of worn-out architectural shingles include curling, cracking, missing granules, and leaks. To address this, you'll likely need to replace the entire roof, which is best done by a professional roofer.
Attempting to DIY roof repairs on architectural shingles can be risky and may void the manufacturer's warranty. It's generally recommended to have a licensed, experienced roofer inspect the roof and provide an estimate for full replacement if the shingles are significantly worn out.