The answer to 'architectural shingles curling shingles' is that curling shingles are a common issue that can be caused by a variety of factors. Curling is often due to improper installation, poor ventilation in the attic, or exposure to extreme temperatures and weather conditions. Symptoms include shingles that cup, curl, or lose their flat appearance.
In many cases, curling shingles can be repaired or replaced by a professional roofer. However, some minor curling may be fixable through DIY methods like re-nailing or applying roof sealant. If the curling is severe or widespread, it's best to call in a roofing expert to assess the situation and recommend the best solution.