FireApproved

Pennsylvania / Decking

Decking in Pennsylvania

Statewide Pennsylvania requires 2021 IWUIC.

The rule

Adopted “Approved noncombustible materials.”

2021 IWUIC Class 1–2 noncombustible deck. The unamended 2021 IWUIC includes approved noncombustible materials as one path for attached unenclosed accessory structures and projections such as decks.

Products matching Pennsylvania’s adopted requirements

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

No sourced decking product in this directory yet matches Pennsylvania’s adopted requirements.

Additional products matching the model-code floor

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

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

Additional products matching the voluntary program

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

Every sourced row for this part of the house

  • Adopted 2021 IWUIC Class 1–2 noncombustible deck — The unamended 2021 IWUIC includes approved noncombustible materials as one path for attached unenclosed accessory structures and projections such as decks.
  • Model code 2018 IWUIC Class 1–2 noncombustible deck — The unamended 2018 IWUIC includes approved noncombustible materials as one path for attached unenclosed accessory structures and projections such as decks.
  • Model code IWUIC Class 1–2 noncombustible deck — The unamended 2024 IWUIC model code includes approved noncombustible materials as one path for attached unenclosed accessory structures and projections such as decks.
  • Voluntary program IBHS Base under-deck mesh — The 2025 IBHS Base standard specifies perimeter enclosure mesh for decks whose walking surface is four feet or less above ground.
  • Voluntary program IBHS Plus solid deck surface — The current IBHS Plus retrofit path specifies a solid noncombustible deck walking surface with no gaps.