Replacing a roof could take anywhere from a few days to 2 or more weeks. Roofing experts estimate that the life of your new roof will be cut by as much as 20% if it is installed on top of the existing roof. To check for roof damage, walk around the foundation of your home regularly and look for pieces of broken shingles on the ground. To determine whether a roof is leaking, you can check the attic for signs of moisture on the ceiling, holes, or musty smells. Roofing made out of wood shakes commonly last for 14 to 20 years if they are properly taken care of. This infographic has been brought to you by DVR Roofing. Their progressive approach to roofing business always results in an exceptional roofing experience for their clients and an outstanding finished product.