Plywood Load Capacity Calculator for Roofing
Here's a detailed table on Plywood Load Capacity for Roofing, covering everything you need to know:
| Plywood Thickness (inches) | Span Rating (inches OC) | Live Load (psf) | Dead Load (psf) | Common Uses |
|---|---|---|---|---|
| 1/4" (6mm) | 16" | 10 | 5 | Temporary sheathing, underlayment |
| 3/8" (9.5mm) | 16" | 20 | 10 | Light-duty roofing (shingles, felt) |
| 1/2" (12.7mm) | 24" | 30 | 15 | Standard residential roofing |
| 5/8" (15.9mm) | 24"-32" | 40 | 20 | Heavy residential/commercial roofing |
| 3/4" (19mm) | 32" | 50 | 25 | Commercial/heavy snow load areas |
| 7/8" (22.2mm) | 48" | 60 | 30 | Structural roofing for extreme loads |
Additional Notes:
- Span Rating: Defines how far apart the roof supports (rafters or trusses) can be.
- Live Load (psf): Weight of snow, wind, and temporary loads.
- Dead Load (psf): Weight of the roofing material itself.
- Code Compliance: Always check local building codes as load requirements vary.
- Material Type: Plywood can be CDX (construction-grade), OSB (oriented strand board), or marine plywood depending on exposure to moisture.