Ventilation
The biggest cause of roof failure we see.
Roof Ventilation Analysis in Oklahoma
Proper ventilation is one of the most overlooked factors in roof performance.
Most roofing problems are not caused by shingles alone.
Improper ventilation can lead to heat buildup, trapped moisture, and reduced roof lifespan—often without visible signs from the ground. Many homes are built or re-roofed without properly addressing airflow, which can create long-term issues even with a newly installed roof.
At Redhawk Roofing & Restoration, we evaluate ventilation as part of a complete roofing system to help ensure your roof performs the way it should.
WHY VENTILATION MATTERS
A properly balanced ventilation system allows air to flow through the attic space, helping regulate temperature and moisture levels.
When ventilation is not functioning correctly, it can contribute to:
- Excessive attic heat
- Moisture buildup
- Premature aging of roofing materials
- Reduced overall system performance
Ventilation is not always obvious, which is why it is often overlooked during inspections and replacements.
COMMON ISSUES WE SEE
Many homes we evaluate have ventilation-related issues that were never addressed during construction or previous roof replacements.
Some of the most common include:
Insufficient intake or exhaust ventilation
More often than not roof systems may not have adequate intake or exhaust ventilation. This means the system may not be allowing enough air to properly enter or exit the attic space.
When ventilation is insufficient, it can contribute to heat buildup, trapped moisture, and increased stress on roofing material. Over time this can impact overall roof performance and longevity.
These observations help identify areas where ventilation may be beneficial to support a more effective roof system.
Blocked or restricted airflow
We often identify areas where airflow may be blocked or restricted within the attic or ventilation pathways. This can occur due to insulation covering intake vents (very common), obstructed soffits, debris, or other limitations that prevent proper air movement.
Imbalanced intake and exhaust
Our evaluations often identify an imbalance between intake and exhaust ventilation. For a ventilation system to function properly, air must be able to enter and exit the attic in a balanced manner.
When intake and exhaust are not properly aligned, the system cannot move air effectively. This can lead to reduced airflow, heat buildup, moisture concerns, and overall decreased performance of the roofing system.
Correcting this imbalance helps support proper airflow and allows the ventilation system to function as intended.
Unless a vapor barrier is present we always aim for a 50:50 balance based on the 1:150 rule meaning that 1 square foot of ventilation for every 150 square foot of attic space. (60/40 is acceptable)
Incorrect vent types or placement
Aside from imbalance by far the most common issue we see during evaluations is the type of vents used or their placement within the roofing system may not be optimal. Ventilation components need to be properly selected and positioned to allow air to move effectively through the attic.
Using incompatible vent types or placing vents in ineffective locations can limit airflow, disrupt system balance, and reduce overall performance. In some cases, this can also cause one part of the system to work against another.
Addressing vent type and placement helps ensure the ventilation system functions as intended and supports long-term roof performance.