What is drip-edge roof flashing, and why do I need it?
A proper drip-edge roof flashing is suppose to be installed across the roofs bottom edge by the roofer before the shingles are nailed on. It is to reach up 3″ under the edge of the shingles, and hang down an inch into the gutter. A far cry different from the small half an inch lip on those cheap steel fascia gutters, compared to the drip-edge’s 3″ reach. One of this flashings primary functions is to keep the rain water from soaking up under the roofing shingles and causing dry-rot of the plywood roof. The secondary function is to seal the gap from the roofing shingles to the gutter, so the rain water does not dribble behind the gutter. that would also cause dry-rot to the wood that the gutter is attached to. Causing gutters to come loose, and even fall down. Most home owners are familiar with seeing those large nail spikes that hold the gutters on, coming loose and sticking out. You can have them hammered back in, but the damage is done, so they will not hold tight again. The sad thing
