# Envelope

Part ID: 9.06d · Layer 9 (Building shell, site & construction) · child of 9.06

Roofing, wall panels, insulation, and other building envelope systems that enclose and weatherproof the shell.

## Companies

| Company | Role | Confidence | Ownership | Ticker | Note |
|---|---|---|---|---|---|
| BlueScope/Butler | manufacturer | inferred | public | BSL.AX |  |
| Carlisle | manufacturer | inferred | public | CSL |  |
| Holcim | manufacturer | inferred | public | HOLN.SW |  |
| Kingspan | manufacturer | inferred | public | KRX.IR |  |
| Nucor | manufacturer | inferred | public | NUE | Insulated Panel |
| Owens Corning | manufacturer | inferred | public | OC |  |

Confidence tags: disclosed = company/filing statement; reported = trade press or partner list; inferred = taxonomy lead.