Roofing in Atlanta, Georgia

Required

STATE-GOVERNED IN ITS TECHNICAL CONTENT, BUT ATLANTA WRITES TWO ROOFING RULES OF ITS OWN. Georgia's residential construction standard is the Georgia State Minimum Standard One- and Two-Family Dwelling Code, which is the 2024 International Residential Code (IRC) with Georgia Amendments (the "Georgia State Amendments to the International Residential Code (2024 Edition), Revised January 1, 2026" packet issued by the Georgia Department of Community Affairs). Per O.C.G.A. 8-2-25(a), the codes enumerated as mandatory in O.C.G.A. 8-2-20(9) have state-wide application and do not require adoption by a municipality or county; DCA's own guidance states that "Georgia law gives the enumerated codes statewide applicability, so it is not required that local governments have to adopt the mandatory codes," and that local governments must instead adopt administrative procedures in order to enforce them. A local government may adopt local amendments only where they are MORE stringent than the state minimum, only where justified by local climatic, geologic, topographic or public safety factors, and only after submitting the proposed amendment to DCA and filing the adopted amendment with the department. CITY LAYER: Atlanta's own amendments are collected in Appendix A, "Building Code Amendments," Chapter I, of Part III of the Code of Ordinances (Land Development Code). That appendix has twelve sections, 101 through 1301, and all twelve were read for this entry. Most of it is administrative - Sections 103 (Application for Permit) and 104 (Permits) are where the city's permit triggers, exemptions and fees live - but two of the twelve are substantive roofing rules that a roofer planning an Atlanta job has to know about, and neither of them comes from the IRC. (1) Section 1300, "ROOFING REFLECTANCE STANDARDS," adopted by Ordinance No. 2025-18(25-O-1310) on 6-11-25 and amended by Ordinance No. 2026-09(26-O-1154) on 3-11-26, provides at 1300.1 that "The provisions of this section shall apply to all new building construction and roof replacements." Under 1300.2(a), unless an exception applies, roof coverings over conditioned spaces on steep-slope roofs (roof slope > 2:12) must be constructed of materials that achieve "A 3-year aged solar reflectance not less than 0.21 as determined by the ANSI/CRRC S100 Standard or as certified to the City of Atlanta by the manufacturer" or "A 3-year aged solar reflectance index not less than 20" on the same basis; for low-slope roofs (roof slope ≤ 2:12) the figures are 0.70 and 85. The exceptions at 1300.2(c) cover vegetated roof areas and the equipment maintaining them, roof areas used as outdoor recreation space, roof areas holding equipment required by the International Fire Code, roof areas that are 3% or less of the building's gross floor area, and "Repairs to existing roofs that do not require full replacement of the structure's roof." Practical effect: a full Atlanta roof replacement has to use a covering that meets the reflectance figure, while a repair short of full replacement does not. (2) Section 101.8, "APPLICATION TO EXISTING BUILDINGS," subsection (h), provides that repairs and alterations not covered by the preceding paragraphs may be made with the same kind of materials as those of which the building is constructed, "but not more than twenty-five (25) percent of the roof covering of a building shall be replaced in any period of twelve (12) months unless the entire roof covering is made to conform with the requirements of this Code for new buildings." What Appendix A does NOT do is rewrite the technical roof-covering chapter: it contains no amendment to IRC Chapter 9 and no reference to R903, R905 or R908, and the Georgia Amendments packet contains no Chapter 9 amendment either, so the IRC roof-covering provisions apply in Atlanta as adopted. Appendix A also contains no adoption of the optional IRC Appendix U (Disaster Resilient Construction), which DCA adopts as a permissive code a local government may take up; whether Atlanta has adopted it by some other instrument is not established.

A PERMIT IS NEEDED FOR A SHINGLE REPLACEMENT. Section 103.4(a)(i) of Atlanta Land Development Code Appendix A exempts only "Non-structural re-roofing repairs excluding truss repairs or shingle replacement provided that upon replacement no more than three layers of shingles remain", and Section 104.2(m), item h, sets a dedicated fee: "Re-roofing of existing structures—Minimum fee .....$360.00". Starting without the permit costs more: Section 104.2(d) provides that "A fee of double the usual permit fee will be charged for all building begun without a permit. However, in no case shall the penalty portion of said fee exceed $1,000.00." Atlanta permit applications are handled by the Department of City Planning's Office of Buildings through its Zoning, Development and Permitting Services. The permit-scope provisions are Appendix A (Building Code Amendments), Chapter I, Section 103 (Application for Permit, including 103.1 "When required" and 103.4 "Work exempt from permit") and Section 104 (Permits, with the fee schedule at 104.2). Section 103.1 makes it unlawful to "alter or repair" a building "without first obtaining a building permit in conformity with Section 104, unless said structure is specifically exempted by this Code." Exterior work on a landmark or historic-district property under Chapter 20 of the zoning ordinance also needs a certificate of appropriateness once the repair valuation reaches $2,500.00.