Canadian preservative-treated wood is manufactured to CSA standards. To ensure that the specified degree of protection will be provided by a product, it should bear a quality assurance grade stamp (see example below). The stamp indicates that the product meets standards for retention and penetration, and that wood moisture content at the time of treatment was conducive to acceptance of chemical preservative.
General Guidelines for Preservative-Treated Wood
- Use preservative-treated wood for damp conditions especially in proximity to the ground and where insect attack is a risk.
- Minimize the field cuts after pressure-treatment. Apply two coats of preservative-treatment to protect field cuts.
- Verify that the chemical retention specified for a project is delivered to the jobsite.
Wood Preservation, Candian Institute of Treated Wood, 1990
Treated Wood Guidlines, Canadian Institute of Treated Wood, 1990
Waterborne Wood Preservatives, Canadian Institute of Treated Wood, 1990
Wood Design Manual, Canadian Wood Council, 1997
American Wood Protection Association
Canadian CCA Consumer Awareness Program
Pest Management Regulatory Agency--Health Canada
Wood Preservation Canada