What is F17 plywood used for in Australia?
F17 is the most commonly specified structural grade for concrete formwork in Australia. The rating indicates a characteristic bending strength of 17 MPa, providing sufficient stiffness for wall, column, and slab forming when studs or walers are spaced at 400–600 mm. F17 formply is also used for structural flooring, bracing panels, and any heavy-duty structural application where 17 MPa bending performance is the minimum specified requirement.
What is the difference between F17 and AS/NZS 6669 formply?
F17 refers to the structural stress grade (bending strength 17 MPa) under AS 1720.1. AS/NZS 6669 is the formwork-specific standard governing bond quality, veneer grades, and face finish. Formply marked 'F17 AS/NZS 6669 Type A' meets both the structural performance requirement and the formwork-specific Type A boil-proof bond. F17 panels without the AS/NZS 6669 designation are structural-grade plywood — they may lack the WBP bond class required for wet concrete contact.
Can I use Vietnamese film-faced plywood for concrete forming in Australia?
Yes, on most Australian private commercial projects. Vietnamese film-faced plywood made to EN 636-3 with WBP phenolic adhesive is widely accepted by Australian engineers as equivalent in performance to AS/NZS 6669 Type A formply. For government projects with explicit AS/NZS 6669 marking requirements, confirm with the project engineer before substituting. Request the supplier's Declaration of Performance or NATA-accredited test report to support your compliance documentation.
What thickness formwork plywood do I need for a standard wall pour in Australia?
17 mm domestic formply or the 18 mm metric import equivalent is the standard specification for wall forming at 400–600 mm stud spacing. For pours with concrete head exceeding 3 m, or heavy foundation walls with high lateral pressure, specify 21–25 mm at F22 grade or equivalent. Always verify stud spacing calculations against the panel's bending stiffness data for high-pressure pours.
How much does formwork plywood cost in Australia?
Domestic F17 AS/NZS 6669 formply typically costs A$65–100 per sheet (2400 x 1200 mm, 17 mm) through trade distributors; Bunnings Trade stocks it at A$75–95. Film-faced phenolic panels imported direct from Vietnam range from A$40–80 per sheet depending on grade and film weight for full-container orders. At 20+ reuse cycles, imported film-faced panels deliver 30–60% lower cost per pour than domestic formply on volume projects.
