Roof valleys, if not installed correctly are one of the most leak prone areas on the roof. Because roof valleys function as a drain on the roof, they receive as disporportionate volume of water every time it rains. When a valley begins to leak it's very difficult to surgically address the leak. The best way to find and stop the roof leak is to start over. And that's what we've done here Montgomery's Old Cloverdale neighborhood. We removed all old roofing material down to the original wood deck. Then installed a layer of GAF Storm Guard underlayment and 20' valley flashing. Instead of going back with an open metal valley, we installed a closed metal valley system. This prevents future leaks with wind-driven rains. Then, we installed architectural shingles to match the existing roofing material.
Billy Guyette - Montgomery native - roofing specialist