Products & Applications


For applications such as decks, fences, playground structures, and most other residential applications, choose ACQ-treated products.

Industrial, Agricultural, and Permanent Wood Foundations (PWF)

CCA (Chromated Copper Arsenate) was once the most widely used treated wood product.  Government regulations and standards revisions in 2003 restricted its use to mostly non-residential applications.  It's still the predominant preservative in utility poles, agricultural fence posts, bridges, and other highway uses.

Permanent Wood Foundations (PWF)

Permanent Wood Foundations are engineered structures that use pressure-treated lumber and plywood as a building foundation in place of concrete.  Permanent Wood Foundations offer the economic performance of wood in locations where concrete may be expensive or unobtainable as a basement. They also provide the benefits of a dry, fully finished living space. PWF basements have been in use for over 40 years and are accepted by the major building codes.

The treating process of the treated product inspection, and construction of the permanent wood foundation are all carefully controlled processes that are standardized by the Canadian Standards Association.  CCA-treated lumber labelled for use in a permanent wood foundation is intended only for use in a foundation.  It cannot be used for decking, joists, rim boards or other applications that are not part of an engineered wood foundation.

  • 2x6 in 93” Studs and 8’ – 16’ lengths
  • 2x8 in 93” Studs and 8’ – 16’ lengths

Fire Retardants                

D-Blaze® interior fire-retardant treated lumber and plywood is best for interior applications where fire-retardant construction materials are specified or required by building codes. D-Blaze treated lumber and plywood is highly effective in controlling the spread of flame and the smoke development caused by fire. It's widely used in commercial, industrial and institutional buildings.  West Fraser's Sundre facility produces D-Blaze fire retardant plywood and lumber (on request).

Barefoot Decking

Our Barefoot Decking exterior treated wood products offer long-term protection for a wide variety of residential, commercial and agricultural construction applications. Find out more about our new colour-infused Barefoot Brown Decking, which eliminates the need for staining: Barefoot Decking products.


Treated Wood Construction Tips and Fasteners

Technical Bulletin: Fastener and connector recommendations for ACQ® pressure treated wood

  • Fasteners should be hot-dipped galvanized (ASTM A 653; G-185), Stainless Steel, or other code-approved material.
  • Do not use aluminum in direct contact with pressure treated wood.
  • Before you begin screwing the deck surface down, lay your West Fraser Barefoot Decking with the best face exposed. Try to ensure that any edge knots are turned down.
  • Place screws no closer than 3/4" to the edge of the board.
  • When placing screws near the end of the board, ALWAYS drill a pilot hole about three-quarters the diameter of the screw. Try to put the screw a minimum of 1" back from the end of the board. It helps reduce splitting, which occurs with weathering.

Maintenance Schedule

  • Although no maintenance is required during the first year, a high-quality semi-transparent stain or water repellent will help protect the wood from weathering. To ensure the wood is dry, wait six weeks after installation and five days after rain; follow the stain manufacturer's instructions. Every two-three years, it's recommended you clean the deck's surface with a deck brightener product to revitalize the appearance of your decking.  Then, apply a fresh coat of semi-transparent stain or water repellent after the deck has dried.