Lastly, any sign of missing shingles or any other roof damage should be a red flag. You need to be aware that the shingles are there ones that act together with the other roofing materials as shields of your entire roof. It is best that you do all you can to call a roofer to come to fix the missing shingle before you can regret not doing the right thing at the right time. If you are not sure about the shingles, you had better contact a roofer to come and inspect if everything is okay. Some contractors will offer some inspection at no cost which is why you do not need to worry about that. During the inspection, a professional will be on the roof checking to see any curled edges or corners, missing shingles as well as cracks.