Common signs that you need roof repair consist of visible sagging, water stains on ceilings, and granule loss from tiles
https://www.hometalk.com/member/262514383/tillie1432856
Common signs that you require roof covering repair include visible sagging, water spots on ceilings, and granule loss from roof shingles. If you observe these signs, call a roof professional to examine the situation before it intensifies.