Updated : 06/24/2024

Overview

Irmo, South Carolina, adopted the 2021 South Carolina Residential Code (IRC). Irmo, SC, Muni. Code § 8-32 (adoption and amendments) and S.C. Code Ann. Regs § 8-1200 through 8-1257 (adoption and amendments). Irmo, South Carolina, adopted the 2021 SC Building Code (IBC). Irmo, SC, Muni. Code § 8-31 (adoption) and S.C. Code Ann. Regs § 8-800 through 8-8120 (adoption and amendments). The State legislature did not require adoption of the 2021 International Existing Building Code (IEBC) statewide but granted local jurisdictions authority to adopt the IEBC by ordinance as needed. S.C. Code § 6-9-60. 

Helpful resources for Irmo, South Carolina include the following.

• Jurisdiction's Information Page(s):
  • Irmo, South Carolina Home Page
  • Irmo, South Carolina Planning and Zoning Department
  • Irmo, South Carolina Municipal Code
• PLRB, Ordinance and Law Coverage Discussion for South Carolina

Residential Building Code

South Carolina adopted a statewide mandatory residential code that will control. Authority for local amendments will be limited.See PLRB, South Carolina Building Codes for more information on state level codes.

Irmo adopted the 2021 IRC, locally. Note that adoptions usually come with amendments. So, it is important to review those amendments in addition to the unamended model code.

You can find a copy of the model code here.

You can find information about amendments to the model code here.

Auto Search - beta:

No results were located with the automated search.

Drip Edge

Drip Edge: Yes

Ice Barrier

Are ice barriers required for Irmo ? No
Comments:

Drip Edges

A drip edge must be provided at eaves and rake edges of asphalt shingle roofs where required by the manufacturer. S.C. Code Ann. Regs. § 8-1228.

Ice Barrier:

The adoption of the residential code included an amendment stating that ice barrier underlayment is not required at the eaves.

• Ground snow load: 10.

• Wind speed: 115 mph.

• Topographic effects: No.

• Special wind region: No.

• Wind-borne debris zone: No.

• Seismic design category: B/C.

• Weathering damage: Moderate.

• Front-line depth: 12.

• Termite: Very Heavy.

• Winter design temp: 28.

• Ice barrier underlayment required: No.

• Flood hazards: Chapter 14.

• Air freezing index: 1500.

• Mean annual temp: 64.8.

Irmo, SC, Muni. Code § 8-32 (adoption and amendments).

Comments

Irmo, South Carolina, adopted the 2021 South Carolina Residential Code (IRC). Irmo, SC, Muni. Code § 8-32 (adoption and amendments) and S.C. Code Ann. Regs § 8-1200 through 8-1257 (adoption and amendments). 

Existing Buildings

Existing buildings, meaning buildings that were built in accordance to code at the time of construction, typically merit extra consideration in a current updated code.

The state of South Carolina adopted Appendix AJ of the adopted IRC.

The State legislature did not require adoption of the 2021 International Existing Building Code (IEBC) statewide but granted local jurisdictions authority to adopt the IEBC by ordinance as needed. S.C. Code § 6-9-60. 

Commercial Building Code

Irmo adopted the 2021 IBC, locally. Note that adoptions usually come with amendments. So, it is important to review those amendments in addition to the unamended model code.

You can find a copy of the code here.You can find information about the adoption without amendment to the model code here.

Auto Search - beta:

No results were located with the automated search.

Comments

Irmo, South Carolina, adopted the 2021 SC Building Code (IBC). Irmo, SC, Muni. Code § 8-31 (adoption) and S.C. Code Ann. Regs § 8-800 through 8-8120 (adoption and amendments). 

Existing Buildings

The State legislature did not require adoption of the 2021 International Existing Building Code (IEBC) statewide but granted local jurisdictions authority to adopt the IEBC by ordinance as needed. S.C. Code § 6-9-60. 

Other Building Codes