Calculate the necessary amount of ventilation products for an attic space. Input attic dimensions or square footage to receive results based on the NFA 1/300 rule for balanced ventilation.
Roofing Ventilation Calculator by Compagnie de Saint-Gobain




250+ iOS apps curated and reviewed
With an average user rating of 3.6★, the roofing ventilation calculator category is one of the App Store's strongest. Browse all 250+ apps we track, sorted so the most loved ones surface first.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 | Free | 3.0★ (6) | No | No | Jun 2026 | |
| 2 | Free | 4.5★ (11) | No | No | May 2026 | |
| 3 | Free | 4.3★ (6) | No | Yes | May 2026 | |
| 4 | Free | 5.0★ (1) | No | No | May 2026 | |
| 5 | Free | 4.9★ (9.6K) | No | No | Aug 2026 | |
| 6 | $4.99 | 4.0★ (1) | No | No | Aug 2026 | |
| 7 | Free | — | No | Yes | Jun 2026 | |
| 8 | $0.99 was $1.99 | — | No | No | Aug 2026 |




Calculate the necessary amount of ventilation products for an attic space. Input attic dimensions or square footage to receive results based on the NFA 1/300 rule for balanced ventilation.






Calculate the number of roof vents needed for a balanced attic ventilation system. This app helps determine intake and exhaust options, roof pitch, and soffit panel requirements. It also provides product information and tools for Whirlybird installations.

This app calculates attic ventilation requirements based on your attic space and intake ventilation net free areas. It helps design ventilation systems to meet building code limits, suggesting vent quantities and types for optimal function. It also allows you to check existing systems and plan modifications.


Calculate required whole-house ventilation rates for residential buildings based on ASHRAE 62.2-2019 standards. Input home square footage and number of bedrooms, with an option to factor in blower door test results for natural ventilation.


This app provides contractors with accurate property measurements for roofs and walls. It helps generate estimates, plan jobs, and visualize proposed improvements for clients. Access property imagery, upload your own, and annotate images for detailed planning.


This app provides quick and easy calculations for HVAC professionals and enthusiasts. It simplifies complex formulas for energy use, airflow, and duct dimensions, making them accessible on your iPhone or iPad.












Monitor and control your home's indoor air quality with intelligent ventilation. Customize comfort settings, track air quality history, and receive filter maintenance alerts for a healthier living space.


This app helps manage indoor humidity by comparing indoor and outdoor conditions. It provides personalized advice on when to ventilate your rooms to maintain optimal air quality and prevent issues like mold or respiratory discomfort.




This utility app helps HVAC engineers quickly calculate the recommended Thermaflex duct size for installations. Input project volume and friction loss to determine the optimal duct size based on established industry standards.








Calculate the heating load for simple rectangular buildings with natural air infiltration. Save calculations for future reference or email them directly from the app.

