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The provisions of Chapter 5 [RE] of the International Energy Conservation Code are adopted by reference and shall apply with the following modifications:
1. R501.4 Compliance. Revise to read:
R501.4 [Reserved].
2. [Reserved].
3. R502.1.1.2 Heating and cooling systems. Revise to read:
R502.1.1.2 Heating and cooling systems. New heating, cooling and duct systems that are part of the addition shall comply with Sections R403.1, R403.2, R403.3, R403.5 and R403.6.
Exception: Where ducts from an existing heating and cooling system are extended to an addition, the new and existing duct systems shall not be required to be tested in accordance with Section R403.3.3. New duct systems shall be sealed in accordance with Section R403.3.2.
4. R503.1.1 Building envelope. Revise to read:
R503.1.1 Building envelope. Building envelope assemblies that are part of the alteration shall comply with Section R402.1.2 or R402.1.4, Section 402.1.6, Sections R402.2.1 through R402.2.12, R402.3.1, R402.3.2, R402.4.3 and R402.4.4.
Exceptions: The following alterations need not comply with the requirements for new construction provided the energy use of the building is not increased:
1. Storm windows installed over existing fenestration.
2. Existing ceiling, wall or floor cavities exposed during construction provided that these cavities are filled with, insulation.
3. Construction where the existing roof, wall or floor cavity is not exposed.
4. Roof recover.
Exception: Compliance with the urban heat island provisions in Section 402.1.6 shall be required.
5. Roofs without insulation in the cavity and where the sheathing or insulation is exposed during reroofing shall be insulated either above or below the sheathing.
6. For roof replacement on existing buildings with a roof slope of less than 2 units vertical in 12 units horizontal (2:12), and where the roof covering insulation remains, and where the required R-value cannot be provided due to thickness limitations presented by existing rooftop conditions (including heating, ventilating and air-conditioning equipment, low door or glazing heights, parapet heights, weep holes, and roof flashing heights not meeting the manufacturer's specifications), the maximum thickness of insulation compatible with the available space and existing uses shall be installed. Insulation used shall be minimum R-5 per inch. In areas where flashing may be terminated a minimum of 8 inches above the roof covering (including required insulation) insulation shall be a minimum of R-30.
7. R-value for roof assemblies with tapered insulation above deck with slope greater than 1/8 units vertical in 12 units horizontal (1/8:12) shall average R-30.
8. Surface-applied window film installed on existing single pane fenestration assemblies to reduce solar heat gain provided the code does not require the glazing or fenestration assembly to be replaced.
5. R503.1.2 Heating and cooling systems. Revise to read:
R503.1.2 Heating and cooling systems. New heating, cooling and duct systems that are part of the alteration shall comply with Sections R403.1, R403.2, R403.3 andR403.6.
Exception: Where ducts from an existing heating and cooling system are extended, the new and existing duct systems shall not be required to be tested in accordance with Section S403.3.3. Altered duct systems shall be sealed in accordance with Section R403.3.2.
6. R504.2 Application. Revise to read:
R504.2 Application. For the purposes of this code, the following shall be considered repairs:
1. Glass-only replacements in an existing sash and frame.
2. Roof repairs.
3. Insulation with new roof covering for roof slopes less than 2 units vertical in 12 units horizontal (2:12) inches only in areas where the tapered insulation is used above an existing roof covering to create slope between drains or upslope from obstructions to water flow.
4. Repairs where only the bulb and/or ballast within the existing luminaires in a space are replaced provided that the replacement does not increase the installed interior lighting power.
(Added Coun. J. 9-14-16, p. 31143, § 1; Amend Coun. J. 3-29-17, p. 45477, § 11)