Roof penetrations to coordinate before installation

Dekoven Roofing

November 13, 2026

Plumbing vents, equipment curbs and other openings need coordinated locations and details. Last-minute changes can affect both the schedule and roof scope.

Keep a drawing that marks each roof opening and identify which trade confirms the final location. Verify field changes before the roofing detail is built so the work can be coordinated while access is available.

Contact Dekoven Roofing with the current plans and the project schedule to discuss a roofing bid.

Penetrations are leak points

Every vent, pipe, chimney, skylight and curb passes through the roof and needs flashing designed for it.

Coordinate before installation

  • Plumbing vents and exhaust fans.
  • Chimneys and flues.
  • Skylights.
  • Mechanical units and curbs.
  • Solar or antenna mounts.

Who decides locations

The designer, builder and trades should settle locations before roofing so flashing can be done properly instead of retrofitted. Late changes often mean cutting into finished roofing.

Ask

Which penetrations are included in the roofing scope? Who supplies curbs and boots?

Frequently asked questions

Can penetrations be added later?

Yes, but plan the flashing and ask who is responsible.

Who supplies curbs?

Confirm in the scope.

Are vents a common leak source?

They can be if flashed poorly.

Related: Ask about a roofing bid

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