If your roof’s going to leak, it almost always starts in the valley first. That’s where two roof planes meet and funnel rainwater into one narrow path — more volume, more force, more wear on those shingles than anywhere else up top.
Georgia code only requires a waterproof ice and water barrier in the valleys. We install it there, but we don’t stop — we run it around the entire eaves and rakes too, plus about three feet around every pipe boot, vent, and chimney, since those spots fail just as often once a seal lifts.
A finished valley on a real TTR replacement in Mableton, GAIce and water shield run along the full eave line — beyond what GA code requires
If your roof’s more than a few years old, checking the valleys is the fastest way to catch a slow leak before it turns into a ceiling stain.
