Roofing Ventilation Calculator
by Compagnie de Saint-Gobain more by this developer →
#334,924 of 719,896 by ratings on Apple · #15,459 of 45,378 in Business
First seen by this census 09/05/2026 — the store does not publish a creation date
Last updated 06/03/2026
Tracked since 09/05/2026
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Category: Business
Description
The Ventilation Calculator from CertainTeed is the ideal tool for quickly determining the amount of ventilation products needed to outfit an attic space with proper balanced ventilation. Simply enter the length and width of the attic space or the overall square footage of the space and the Ventilation Calculator produces results based upon the NFA 1/300 rule.
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Growth
Change in ratings, scaled to each window from the real gap between crawls. A window needs a full period of history before it reports anything.
| Per | Growth | Growth % | Actual change | Measured over |
|---|---|---|---|---|
| day | Not enough history yet | |||
| week | 0 | — | 0 | 9.2 days |
| month | Not enough history yet | |||
| year | Not enough history yet | |||
History
Tracking since 09/05/2026. History accumulates as changes are observed — check back soon.