ADOPTS WITH AMENDMENTS:

International Existing Building Code 2015 (IEBC 2015)

Heads up: There are no amended sections in this chapter.
Level 1 alterations as described in Section 503 shall comply with the requirements of this chapter. Level 1 alterations to historic buildings shall comply with this chapter, except as modified in Chapter 12.
An existing building or portion thereof shall not be altered such that the building becomes less safe than its existing condition.
Exception: Where the current level of safety or sanitation is proposed to be reduced, the portion altered shall conform to the requirements of the International Building Code.
In flood hazard areas, alterations that constitute substantial improvement shall require that the building comply with Section 1612 of the International Building Code, or Section R322 of the International Residential Code, as applicable.
All newly installed interior wall and ceiling finishes shall comply with Chapter 8 of the International Building Code.
New interior floor finish, including new carpeting used as an interior floor finish material, shall comply with Section 804 of the International Building Code.
All newly installed interior trim materials shall comply with Section 806 of the International Building Code.
In Group R-2 or R-3 buildings containing dwelling units and one- and two-family dwellings and townhouses regulated by the International Residential Code, window opening control devices complying with ASTM F 2090 shall be installed where an existing window is replaced and where all of the following apply to the replacement window:
  1. The window is operable;
  2. The window replacement includes replacement of the sash and the frame;
  3. One of the following applies:
    1. In Group R-2 or R-3 buildings containing dwelling units, the top of the sill of the window opening is at a height less than 36 inches (915 mm) above the finished floor; or
    2. In one- and two-family dwellings and town-houses regulated by the International Residential Code, the top sill of the window opening is at a height less than 24 inches (610 mm) above the finished floor;
  4. The window will permit openings that will allow passage of a 4-inch-diameter (102 mm) sphere when the window is in its largest opened position; and
  5. The vertical distance from the top of the sill of the window opening to the finished grade or other surface below, on the exterior of the building, is greater than 72 inches (1829 mm).
The window opening control device, after operation to release the control device allowing the window to fully open, shall not reduce the minimum net clear opening area of the window unit to less than the area required by the International Building Code.
Exceptions:
  1. Operable windows where the top of the sill of the window opening is located more than 75 feet (22 860 mm) above the finished grade or other surface below, on the exterior of the room, space or building, and that are provided with window fall prevention devices that comply with ASTM F 2006.
  2. Operable windows with openings that are provided with window fall prevention devices that comply with ASTM F 2090.

702.5 Emergency Escape and Rescue Openings

AMENDMENT
This section has been amended at the state or city level.
Where windows are required to provide emergency escape and rescue openings in Group E classrooms, Group R-2 and R-3 occupancies and one- and two-family dwellings and townhouses regulated by the International Residential Code, replacement windows shall be exempt from the requirements of Sections 1030.2, 1030.3 and 1030.5 of the International Building Code and Sections R310.2.1, R310.2.2 and R310.2.3 of the International Residential Code accordingly, provided the replacement window:

Is the manufacturer's largest standard size window that will fit within the existing frame or existing rough opening.

The replacement window shall be permitted to be of the same operating style as the existing window or a style that provides for an equal or greater window opening area than the existing window.

Window opening control devices complying with ASTM F 2090 shall be permitted for use on windows required to provide emergency escape and rescue openings.
All new work shall comply with the materials and methods requirements in the International Building Code, International Energy Conservation Code, International Mechanical Code, and International Plumbing Code, as applicable, that specify material standards, detail of installation and connection, joints, penetrations, and continuity of any element, component, or system in the building.
The following sections of the International Fuel Gas Code shall constitute the fuel gas materials and methods requirements for Level 1 alterations.
  1. All of Chapter 3, entitled "General Regulations," except Sections 303.7 and 306.
  2. All of Chapter 4, entitled "Gas Piping Installations," except Sections 401.8 and 402.3.
    1. Sections 401.8 and 402.3 shall apply when the work being performed increases the load on the system such that the existing pipe does not meet the size required by code. Existing systems that are modified shall not require resizing as long as the load on the system is not increased and the system length is not increased even if the altered system does not meet code minimums.
  3. All of Chapter 5, entitled "Chimneys and Vents."
  4. All of Chapter 6, entitled "Specific Appliances."

703.1 General

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Alterations shall be done in a manner that maintains the level of fire protection that exists.

703.2 Smoke and Carbon Monoxide Alarms

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Smoke and carbon monoxide alarms shall be provided and installed in accordance with Section 804.4.

704.1 General

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Alterations shall be done in a manner that maintains the level of protection that exists for the means of egress.

Section 705 Accessibility

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(Relocated to Section 806).

705.1 General

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705.1.1 Entrances

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705.1.2 Elevators

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705.1.3 Platform Lifts

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705.1.4 Ramps

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705.1.5 Dining Areas

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705.1.6 Jury Boxes and Witness Stands

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705.1.7 Accessible Dwelling or Sleeping Units

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705.1.8 Type A Dwelling or Sleeping Units

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705.1.9 Toilet Rooms

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705.1.10 Dressing, Fitting and Locker Rooms

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705.1.11 Fuel Dispensers

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705.1.12 Thresholds

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705.1.13 Extent of Application

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705.1.14 Amusement Rides

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705.2 Alterations Affecting an Area Containing a Primary Function

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706.1 General

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Materials and methods of application used for recovering or replacing an existing roof covering shall comply with the requirements of Chapter 15 of the International Building Code.

Exceptions:
  1. Reroofing shall not be required to meet the minimum design slope requirement of one-quarter unit vertical in 12 units horizontal (2-percent slope) in Section 1507 of the International Building Code for roofs that provide positive roof drainage.
  2. Reroofing for buildings in the primary or secondary fire district shall follow the provisions of Appendix D of the North Carolina Building Code.
Structural roof components shall be capable of supporting the roof-covering system and the material and equipment loads that will be encountered during installation of the system.
New roof coverings shall not be installed without first removing all existing layers of roof coverings down to the roof deck where any of the following conditions occur:
  1. Where the existing roof or roof covering is water soaked or has deteriorated to the point that the existing roof or roof covering is not adequate as a base for additional roofing.
  2. Where the existing roof covering is wood shake, slate, clay, cement or asbestos-cement tile.
  3. Where the existing roof has two or more applications of any type of roof covering.
Exceptions:
  1. Complete and separate roofing systems, such as standing-seam metal roof systems, that are designed to transmit the roof loads directly to the building's structural system and that do not rely on existing roofs and roof coverings for support, shall not require the removal of existing roof coverings.
  2. Metal panel, metal shingle and concrete and clay tile roof coverings shall be permitted to be installed over existing wood shake roofs when applied in accordance with Section 706.4.
  3. The application of a new protective coating over an existing spray polyurethane foam roofing system shall be permitted without tear-off of existing roof coverings.
  4. Where the existing roof assembly includes an ice barrier membrane that is adhered to the roof deck, the existing ice barrier membrane shall be permitted to remain in place and covered with an additional layer of ice barrier membrane in accordance with Section 1507 of the International Building Code.
Where the application of a new roof covering over wood shingle or shake roofs creates a combustible concealed space, the entire existing surface shall be covered with gypsum board, mineral fiber, glass fiber or other approved materials securely fastened in place.
Existing slate, clay or cement tile shall be permitted for reinstallation, except that damaged, cracked or broken slate or tile shall not be reinstalled. Existing vent flashing, metal edgings, drain outlets, collars and metal counterflashings shall not be reinstalled where rusted, damaged or deteriorated. Aggregate surfacing materials shall not be reinstalled.
Flashings shall be reconstructed in accordance with approved manufacturer's installation instructions. Metal flashing to which bituminous materials are to be adhered shall be primed prior to installation.
Where alteration work includes replacement of equipment that is supported by the building or where a reroofing permit is required, the provisions of this section shall apply.

707.2 Addition or Replacement of Roofing or Replacement of Equipment

AMENDMENT
This section has been amended at the state or city level.
Where addition or replacement of roofing or replacement of equipment results in additional dead loads, structural components supporting such reroofing or equipment shall comply with the gravity load requirements of the International Building Code.
Exceptions:
  1. Structural elements where the additional dead load from the roofing or equipment does not increase the force in the element by more than 10 percent.
  2. Buildings constructed in accordance with the International Residential Code or the conventional light-frame construction methods of the International Building Code and where the dead load from the roofing or equipment is not increased by more than 5 percent.
  3. Addition of a second layer of roof covering weighing 3 pounds per square foot (0.1437 kN/m2) or less over an existing, single layer of roof covering.

707.3 Additional Requirements for Reroof Permits

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707.3.1 Bracing for Unreinforced Masonry Bearing Wall Parapets

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707.3.2 Roof Diaphragms Resisting Wind Loads in High-Wind Regions

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Level 1 alterations to existing buildings or structures are permitted without requiring the entire building or structure to comply with the energy requirements of the International Energy Conservation Code or International Residential Code. The alterations shall conform to the energy requirements of the International Energy Conservation Code or International Residential Code as they relate to new construction only.

708.1.1 Building Envelope

AMENDMENT
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Building envelope assemblies that are part of the alteration shall comply with Section R402.1.2 or R402.1.4, Sections R402.2.1 through R402.2.15, R402.3.1, R402.3.2, R402.4.3 and R402.4.6 of the North Carolina Energy Conservation Code for residential buildings and Section C402 of the North Carolina Energy Conservation Code for commercial buildings.

Exceptions:

The following alterations to conditioned spaces need not comply with the requirements for new construction:
  1. Storm windows installed over existing fenestration.
  2. Existing ceiling, wall or floor cavities exposed during construction provided that these cavities are insulated. Roof systems requiring air space for ventilation shall retain the ventilation space required.
  3. Construction where the existing roof, wall or floor cavity is not exposed.
  4. Roof recover and roof replacement such that the existing building or structure is no less conforming to the provisions of this code than the existing building or structure was prior to the alteration.
  5. Surface-applied window film installed on existing single pane fenestration assemblies to reduce solar heat gain.
  6. Air barriers shall not be required for roof recover and roof replacement where the alterations or renovations to the building do not include alterations, renovations or repairs to the remainder of the building envelope.
  7. Alterations that replace less than 50 percent of the luminaires in a space, provided that such alterations do not increase the installed interior lighting power.
  8. For commercial buildings, replacement of existing doors that separate conditioned space from the exterior shall not require the installation of a vestibule or revolving door, provided, however, that an existing vestibule that separates a conditioned space from the exterior shall not be removed.

708.1.1.1 Replacement Fenestration

AMENDMENT
This section has been amended at the state or city level.
Where an entire existing fenestration unit is replaced with a new fenestration product, including frame, sash and glazing, the replacement fenestration unit shall meet the applicable requirements for U-factor and SHGC in Table R402.1.2 of the North Carolina Energy Conservation Code for residential buildings and Table C402.4 of the North Carolina Energy Conservation Code for commercial buildings.

Exceptions:
  1. Alterations that replace less than 50 percent of entire fenestration units may be replaced with like or better fenestration units to match existing fenestration assemblies.
  2. An area-weighted average of the U-factor of replacement fenestration products being installed in the building for each fenestration product category listed in Table C402.4 of the North Carolina Energy Conservation Code shall be permitted to satisfy the U-factor requirements for each fenestration product category listed in Table C402.4 of the North Carolina Energy Conservation Code. Individual fenestration products from different product categories listed in Table C402.4 of the North Carolina Energy Conservation Code shall not be combined in calculating the areaweighted average U-factor.
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