- Self-adhesive peel and stick — adheres directly to plywood, OSB, fibre cement, CLT and SIP substrates
- Eliminates mechanical fixing — no staples, caps or straps required; faster installation
- Highly water resistant — seamless self-sealing laps provide superior weathertightness
- Fire retardant — complies with NZBC C/AS2–C/AS6 surface finish requirements
- Dual-use — approved for both roof and wall solid-substrate applications
Ventia Iron Black is a peel-and-stick self-adhesive roof and wall underlay for direct application to solid substrates including plywood, OSB, fibre cement and mass timber construction. It provides a seamless, watertight layer without the need for mechanical fixing.