Printable Attic Ventilation Worksheet
This one-page attic ventilation worksheet is for roofers, builders, inspectors, and homeowners planning attic airflow. It includes fields for attic length, attic width, floor area, ratio options of 1/150 or 1/300, total NFA required in square feet and square inches, intake share, intake NFA required, exhaust NFA required, intake product and NFA, exhaust product and NFA, intake quantity, and exhaust quantity.
Free printable · PDF
- 1 page
- US Letter — choose “Fit to page” for A4
- PDF, 49 KB
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Enter the attic dimensions first, then choose the ratio and fill in the required ventilation amounts. Use the product lines to match the intake and exhaust products you plan to install, then record the quantities needed for the job.
Good for
- Calculate attic ventilation needs
- Plan intake and exhaust balance
- Compare vent product NFA
Tip: Print one copy for each attic section so you can total ventilation by area.
4 files · PDF, DOCX, XLSX
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This sheet plus 3 more in one download, with the editable Word and Excel files. Attic ventilation worksheet, Excel vent calculator with product NFA inputs, attic inspection checklist and a roof project log.
$5.00 USD, one-time 4 files · about $1.25 each
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