City of Baltimore
Baltimore City Code

Section 302. Fire-Resistant Construction

302.1 Exterior walls. {As in IRC}

302.1.1 Porch roofs – Abutting.

In new construction, renovation, or replacement of a porch roof that abuts another porch roof fire-retardant-treated wood sheathing shall be installed.

302.2 to 302.14 {As in IRC}