You need to know when your roof needs repair and when to hire roof replacement contractors. Here are some clues that your roof might be getting old. Roof shingles look like they have bubbles or are missing bits. Video Source That can happen if the roof isn’t getting enough air. If your shingles are easy to break, that’s not a good sign. Moss likes to grow on roofs, but it’s not a good friend for your roof. It can get the shingles all wet and rotten – chimneys can leak. If your fireplace remains idle you might want to take…