From the Roof
Roof Penetration Leak in Lakeway, Texas
A roof penetration leak identified in Lakeway, showing exactly where water is entering and what the documentation looks like.
Updated October 12, 2026
On the Roof
What this video shows
What this shows: A penetration leak on a Lakeway roof, showing where water gets in and what the documentation looks like. It stays on the site because penetrations are where many leaks begin.
Water does not enter a roof where it appears inside the house. It enters at the highest compromised point and then travels, along the top of the underlayment, down a rafter, across the top plate, until it finds somewhere to drop, and that can be a long way from the entry. This is why finding a leak is an exercise in working uphill from the stain and why penetrations get checked first: a pipe, a vent, a flue or a fan curb is a hole cut in the roof that is only watertight because a piece of metal and a sequence of laps make it so. Sealant on top of a penetration is a repair with a service life measured in a couple of years. Correct flashing is a repair with a service life measured in decades.
Published May 2026. Flashing and Penetrations covers this subject in full, and roofing in Lakeway is the local page for this work.