Wood preservation facilities, alkaline copper quaternary: chapter G, table 1

Table 1. Overview of ACQ Use in Canada

Feature Characteristics
Treated wood use limitations in Canada

Not used to treat wood that will be used in water.

Not used to treat wood used in critical infrastructures such as utility poles, pilings, railway ties or foundations.

Industrial and non-industrial use for above-ground and ground contact in the following categories:

  • Residential construction such as decks, patios, fencing, lattice panels, deck accessories, play structures, siding, plywood, sill plates
  • Recreational applications such as walkways, board walks, landscaping, docks, gazebos
  • General construction and commercial applications such as dimensional lumber, structural timbers, posts, decking
  • Agriculture and horticulture applications such as fencing, framing and building poles
  • Highway construction applications such as lumber and timbers for bridges, bridge decking, hand rails, guard rails, spacer blocks, posts

Not for infrastructure that may be in contact with drinking water, food or animal feeds (storage, production, transport…)

*Note: permitted uses and limitations of ACQ-treated wood may change over time. Refer to pesticide label for up-to-date uses.

General process of application Pressurized application (and sometimes spray application for ACQ-C; refer to the pesticide label)

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2017-09-22