I think you're right about the older shingles being tougher. My parents' house still has the original shingles from the mid-80s, and they're holding u...

Good point about the downspouts. Had a similar issue last fall with pine needles—they slipped right through the mesh guards and formed a blockage half...

That's definitely a common oversight, but honestly, I think intake ventilation issues aren't always about builders missing the mark. I've seen plenty ...