This homeowner in College Park was having their HVAC system fully replaced, which meant new penetrations through the roof for the vent pipes. Any time something new goes through a roof, the flashing around it is what decides whether it leaks.
We installed new pipe flashing around each penetration — a 3″ PVC boot and base sized specifically for HVAC vent piping — bedded into the shingle course so water sheds over the top of the flange rather than running against it. Done properly, the shingles above carry water across the flange and away; done badly, the penetration becomes a slow leak that shows up inside months later.
Pipe boots are one of the most common leak sources we find on otherwise sound roofs. The rubber collar perishes and cracks with UV exposure long before the shingles reach the end of their life, so a roof can be in good condition overall and still leak at a vent.
We Replaced This Roof Four Years Ago
We installed this roof four years ago, so while we were on site we carried out a complimentary roof inspection at no charge — checking the overall condition of the roof system, the other penetrations, flashing details, and ventilation.
We also handled a few minor repairs while we were up there. No charge for those either.
We stand behind our workmanship. When we install a roof, we expect to still be the people you call about it years later — and that means showing up when something changes on your roof, not just when there’s an invoice attached.
What we did
- New pipe flashing on all new HVAC roof penetrations
- 3″ PVC pipe boots sized for HVAC vent piping
- Watertight seal bedded into the shingle course
- Complimentary full roof inspection
- Minor repairs completed at no charge
Had new HVAC, solar, or anything else installed through your roof? Get the penetrations checked. Call (301) 674-4460 for a free inspection across College Park and Prince George’s County.
Project Gallery
