JLC contributor Mark Parlee recently inspected a home in Iowa with major roofing issues. He found a range of reasons why the roof had given out, leaving the house leaky and wet.
All of the leaks stemmed from poor attention to detail when the shingles were being installed and flashed, he said.
These problems included the following:
- No plumbing vent boots had been installed. Instead, these penetrations had been “black jacked”—asphalt roof cement had simply been smeared around the bases of the vent pipes.