The answer to 'asphalt shingles sagging' is that asphalt shingles can sag due to a few common causes, including improper installation, old age, or excessive weight from accumulated debris or snow. Sagging shingles can lead to leaks, water damage, and other roofing issues if left unaddressed.
Some key signs of sagging shingles include visible dips or depressions in the roof, curling or cracking of the shingles, and water stains on the ceiling or walls inside the home. Homeowners should regularly inspect their roof for any signs of sagging or other damage, and address issues promptly to prevent further problems.