H.3 ACQ Treated

Stress Grade F8
Standard AS/NZS 2269 - 2008
Dimensions 2400 x 1200mm
Thicknesses 9 to 32mm

Austral Plywoods distributes a range of veneer treated H.3 ACQ plywood products. ACQ is a preservative treatment of pine timber, similar to CCA but free of arsenic. It offers protection against insect attack, fungi, termites and wood boring insects. The H.3 designation indicates that this product is suitable for outdoor, aboveground use.

Our H.3 ACQ treated plywood is "veneer treated" as distinct from "envelope treated".  Veneer treated is the superior method as it allows the panel to be cut yet still retain its preservative properties. Envelope treated plywood, when cut, must have the preservative re-applied to the cut edge.

Our H.3 ACQ treated plywood is also EWPAA approved, JAS-ANZ certified and complies with AS/NZS 2269. The species used is Radiata Pine from a chain of custody certified resource.

Available products include:

  • Square Edge Structural
  • T&G Flooring
  • External Cladding
  • Treated Formply

The following table shows the minimum allowable plywood thicknesses for residential flooring applications:

Minimum Allowable Thicknesses (mm)
Standard Joist Spacing's (mm)
F8
F11
F14
400
12
12
12
450
14
13
12.5
480
15
14
13
600
19.5
18.5
17
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