Roof ventilation: make the review part of the proposal
Direct answer: a roof replacement changes the exterior roof system, but ventilation performance depends on how intake and exhaust work together with the attic and building. A proposal should at least make clear whether ventilation is being reviewed and what changes, if any, are included.
Three questions matter
What exists?
Identify current intake and exhaust components rather than assuming the existing setup is adequate.
What changes?
The proposal should state whether vents are replaced, added, removed or left unchanged.
Who evaluates it?
Clarify whether ventilation review is part of the roofer's scope or requires another building professional.
Why this belongs in quote comparison
Two proposals can both say “new roof” while handling ventilation differently. Before comparing totals, ask whether ventilation components and review are included, excluded or assumed adequate.
Check ventilation in the Quote CheckerFAQ
Does adding more roof vents automatically improve ventilation?
No. Ventilation is a system question, not a simple count of vents. Intake, exhaust and building conditions need to work together.
Should ventilation be discussed before signing?
Yes, at least enough to know whether the proposal includes a review or assumes the existing configuration will remain.
Related decisions
Quote Checker · Complete roof scope · Flashing scope · Before you sign
HomeQuoteCheck does not calculate code-required ventilation or diagnose moisture conditions for a specific building.