If you’re looking for roof installing information, you’ve come to the right place. But first, let me tell you a little story that teaches an important lesson…
About 15 years ago I was working for a small roofing contractor in Cape Coral, Florida. The boss had sent our crew out to tear off a roof that had two layers of shingles on it. That’s wasn’t unusual, but he said this roof was just eight years old!
How could a 30-year roof fail in just eight years?
As I pulled into the driveway, I noticed the roof slope was somewhat low. The minimum slope for asphalt shingles is 2:12. This roof was 3:12, so it was “legal” but not ideal. That can be a problem when combined with other factors, like the one I found on this roof…
While climbing the ladder I noticed a classic mistake made by a poorly-trained (and long-gone) roofer. He had installed the second layer of shingles without “nesting” them. Nesting is a technique in which the top edge of the new shingle butts up against the bottom edge of the old shingle. It’s a simple, but essential detail that lets the second layer lay nice and flat.
If it’s NOT done like that, you end up with a little “dip” on every row of shingles. Those dips can trap water if the roof slope is on the low side, like this one was. Then it’s just a matter of time. The water gets under the shingles to the seams and fasteners, causing leaks all over the place.
The lesson here is: Whether you install the roof yourself or pay somebody else to do it, it needs to get done right. Take the time to learn these little roof installing details that make such a big difference. Doing so will save you thousands of dollars in needless repairs and premature reroofing.