UpCodes logo
Go To Full Code Chapter
For roof replacement on an existing building with insulation entirely above the deck and where the roof slope is less than two units vertical in 12 units horizontal (16-percent slope), the insulation shall conform to the energy conservation requirements for insulation entirely above deck in the International Energy Conservation Code.
Exception: 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, proper roof flashing heights, the maximum thickness of insulation compatible with the available space and existing uses shall be installed.

Related Code Sections

1003.2.7 Existing Buildings, Roof Replacement Insulation
For roof replacement on an existing building with insulation entirely above the deck and where the roof slope is less than two units vertical in 12 ...
605.2 ENERGY CONSERVATION, EFFICIENCY AND CO2e EMISSION REDUCTION, Roof Replacement
Above-deck insulation for roof replacement on an existing building with insulation entirely above the deck and where the roof slope is less than two ...
C503.3.1 [CE] Existing Buildings, Roof Replacement
Roof replacements shall comply with Table C402.1.3 or C402.1.4 where the existing roof assembly is part of the building thermal envelope and contains ...
C503.3.1 [CE] Existing Buildings, Roof Replacement
Roof replacements shall comply with Section C402.1.3, C402.1.4, C402.1.5 or C407 where the existing roof assembly is part of the building thermal ...
Chapter 9 Roof Assemblies
requirements for roof drainage, flashing, above-deck thermal insulation, rooftop-mounted photovoltaic systems and recovering or replacing an existing ...