Ventia Iron & Ventia Metal Roof Underlays

Appraisal number 1136
Issued
Last updated 8 Apr 2026
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Description

Ventia Iron Roof Underlay is a synthetic building underlay for use under roof claddings. The product consists of a micro-porous water-resistant polypropylene film laminated between two layers of spun bonded polypropylene and is coloured grey.

Ventia Metal Roof Underlay comprises a polymer drainage mat adhered to the Ventia Iron Roof Underlay for use under profiled metal roof cladding.

Consenting instructions

Always refer to the Appraisal in full and the technical literature.

Appraisal holder details

E Built NZ Ltd

warehouse
1B/89 Ellice Road, Wairau Valley, Auckland 0629
phone_enabled 09 916 6750