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Pennsylvania / Roofing

Roofing in Pennsylvania

Statewide Pennsylvania requires 2021 IWUIC.

The rule

Adopted “a Class A rating when tested in accordance with ASTM E108 or UL 790”

2021 IWUIC Class 1–2 Class A roof. The unamended 2021 IWUIC specifies a Class A tested roof assembly for Class 1 and Class 2 ignition-resistant construction.

Products matching Pennsylvania’s adopted requirements

Adopted Product matches below are limited to roofing and trace to the named requirement.

Additional products matching the model-code floor

Model code Product matches below are limited to roofing and trace to the named requirement.

No sourced roofing product in this directory yet matches the model-code floor.

Additional products matching the voluntary program

Voluntary program Product matches below are limited to roofing and trace to the named requirement.

Every sourced row for this part of the house

  • Adopted 2021 IWUIC Class 1–2 Class A roof — The unamended 2021 IWUIC specifies a Class A tested roof assembly for Class 1 and Class 2 ignition-resistant construction.
  • Adopted 2021 IWUIC Class 3 Class B roof — The unamended 2021 IWUIC specifies a Class B-or-better tested roof assembly for Class 3 ignition-resistant construction.
  • Adopted 2021 IWUIC roof-profile eave closure — The unamended 2021 IWUIC requires profile spaces at roof eave ends to block flame and ember entry or use the named cap-sheet path.
  • Adopted 2021 IWUIC valley flashing — The unamended 2021 IWUIC specifies No. 26 galvanized corrosion-resistant metal valley flashing over a named full-width cap-sheet detail.
  • Model code 2018 IWUIC Class 1 Class A roof — The unamended 2018 IWUIC specifies a Class A tested roof assembly for Class 1 ignition-resistant construction.
  • Model code 2018 IWUIC Class 2 Class B roof — The unamended 2018 IWUIC specifies a Class B-or-better tested roof assembly for Class 2 ignition-resistant construction.
  • Model code 2018 IWUIC Class 3 Class C roof — The unamended 2018 IWUIC specifies a Class C-or-better tested roof assembly for Class 3 ignition-resistant construction.
  • Model code 2018 IWUIC roof-profile eave closure — The unamended 2018 IWUIC requires profile spaces at roof eave ends to block flame and ember entry or use the named cap-sheet path.
  • Model code 2018 IWUIC valley flashing — The unamended 2018 IWUIC specifies No. 26 galvanized corrosion-resistant metal valley flashing over a named full-width cap-sheet detail.
  • Model code IWUIC Class 1–2 Class A roof — The unamended 2024 IWUIC model code specifies a Class A tested roof assembly for Class 1 and Class 2 ignition-resistant construction.
  • Model code IWUIC Class 3 Class B roof — The unamended 2024 IWUIC model code specifies a Class B-or-better tested roof assembly for Class 3 ignition-resistant construction.
  • Model code IWUIC roof-profile eave closure — The unamended 2024 IWUIC model code requires profile spaces at roof eave ends to block flame and ember entry or use the named cap-sheet path.
  • Model code IWUIC valley flashing — The unamended 2024 IWUIC model code specifies No. 26 galvanized corrosion-resistant metal valley flashing over a named full-width cap-sheet detail.
  • Voluntary program IBHS Base Class A roof covering — The current IBHS Base standard specifies a Class A roof covering tested to ASTM E108 or UL 790.