Find Sheathing Code Requirements in OneClick Code

Access detailed sheathing specifications, including span, load, and fastening, for accurate estimates and code compliance.

OneClick Code reports now include comprehensive sheathing code requirements, providing users with the precise specifications needed for accurate estimates and code compliance. This feature offers best practice guidance, going beyond minimum requirements to help contractors, adjusters, and property owners determine if existing sheathing can be retained or needs replacement.  This article details the included codes and how they ensure site-specific accuracy.

What Sheathing Codes Are Now Included?

1. IRC Table R503.2.1(1)

This table provides crucial specifications for wood structural panels used in roof and subfloor sheathing:

• Allowable spans and loads

• Minimum sheathing thickness

• Maximum support spacing

• Edge support requirements

2. APA Table 33

This table supplements IRC guidelines by covering:

• Live load capacities exceeding the IRC’s 40 psf limit

• Guidelines for APA-rated sheathing and APA-rated Sturd-I-Floor, particularly when the strength axis is perpendicular to supports

3. IRC R905.2.1 – Asphalt Shingle Fastening

This section requires that asphalt shingles be fastened to solidly sheathed decks for durability and code compliance.

4. IRC R908.2 – Structural and Construction Loads

This code mandates that roof structures must be capable of supporting:

• The roofing system

• Material loads

• Construction equipment loads expected during installation

5. Site-Specific Considerations

Local environmental conditions play a significant role in determining sheathing requirements. Our code reports now account for:

• Elevation

• Snow load

This ensures your sheathing recommendations are tailored to the actual demands of the location.