Most slopes roofs nowadays have shingles on them. Over a period of time those shingles start to lose their life. After the roof starts to age, certain things will start to happen throughout this process. The shingles will start to lose granules, then the shingles will start to shrink and crack. Through this process, sometimes the seals start to pop and the shingles will blow off during high winds, which is very common in shingle roofs. What we do is repair the missing shingles, cracked shingles or leaking valleys.