FireApproved

Pennsylvania / Siding

Siding in Pennsylvania

Statewide Pennsylvania requires 2021 IWUIC.

For Pennsylvania siding, the requirement for Pennsylvania siding is 2021 IWUIC Class 1–2 noncombustible wall. On Pennsylvania siding, it is shown as adopted. Read the Pennsylvania siding rule, then compare 11 matched Pennsylvania siding products.

Before Pennsylvania siding work begins, review Pennsylvania siding project checks. Those Pennsylvania siding checks flag scope still to confirm. The Pennsylvania siding links keep the rule and product list together.

The rule

Adopted “Approved noncombustible materials.”

2021 IWUIC Class 1–2 noncombustible wall. The unamended 2021 IWUIC includes approved noncombustible material as an exterior-wall path in Class 1 and Class 2 construction.

Products matching Pennsylvania’s adopted requirements

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

Additional products matching the model-code floor

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

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

Additional products matching the voluntary program

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

No sourced siding product in this directory yet matches the voluntary program.

Open checks for this answer

These checks stay open because the sourced instrument leaves them to the official record, not because this page skipped them:

  • Confirmation from the building official for this project.
  • The official hazard class for the lot.
  • The official hazard or WUI map for the lot.
  • Whether this project type is in scope of the instrument.

Every sourced row for this part of the house

  • Adopted 2021 IWUIC Class 1–2 noncombustible wall — The unamended 2021 IWUIC includes approved noncombustible material as an exterior-wall path in Class 1 and Class 2 construction.
  • Model code 2018 IWUIC Class 1–2 noncombustible wall — The unamended 2018 IWUIC includes approved noncombustible material as an exterior-wall path in Class 1 and Class 2 construction.
  • Model code IWUIC Class 1–2 noncombustible wall — The unamended 2024 IWUIC model code includes approved noncombustible material as an exterior-wall path in Class 1 and Class 2 construction.
  • Model code IWUIC Class 1 wall-base protection — The unamended 2024 IWUIC model code specifies a six-inch vertical metal or noncombustible wall-base detail at ground, deck, and roof intersections for Class 1 construction.
  • Voluntary program IBHS Base six-inch wall-base protection — The current IBHS Base standard specifies at least six vertical inches of noncombustible material at the base of exterior walls.