• 1930s Began with a sawmill in Whonnock, BC.
• 1963 Incorporated as Yorkston Lumber Co.
• 1963 Name changed to Whonnock Lumber Co.
• 1967 Converted to a public company.
• 1967 Name changed to Whonnock Industries.
• 1976 Buy Adams Lake division
• 1979 Sauder Industries acquired a controlling interest in Interfor (later transferred to the Sauder family's Mountclair Investment Corporation holding company).
• 1988 Name changed to International Forest Products Ltd.
• 1991 Buy Hammond Division
• 1995 Buy Weldwood Operation
• 1996 Close Bay Lumber Operation
• 2000 Sell Flavelle Mill
• 2001 Buy Primex Mills
• 2001 Close Fraser Mill
• 2002 Close MacDonald Operation/Open Sumas Operation
• 2004 Close Squamish Operation
• 2005 Buy Crown Pacific Limited Partners
• 2005 Buy Floragon Forest Products Molalla Inc.
• 2005 Close Marysville and Field Operations
• 2006 Sell Saltar and MacKenzie Operations
• 2008 Buy Portac Inc.
• 2008 Close Queensborough Operations
• 2013 Buy Rayonier Wood Products Division
• 2013 Buy Keadle Lumber Enterprises Inc.
• 2014 Buy Tolleson Lumber Company
• 2014 Name changed to Interfor Corporation
• 2014 Close Forks/Beaver Operations
• 2014 Acquired properties from Simpson Lumber Company
• 2015 Buy Monticello Operation
• 2015 Close Tacoma Operation
• 2019 Close Hammond Operation
• 2020 Sell Gilchrist Operation
• 2021 Buy Summerville Operation, and Timmins and Gogama mills.
• 2022 Buy EACOM Timber - Eastern Canada Expansion
• 2022 Sell Acorn Division
• 2022 Buy Chaleur Forest Products

Interfor produces lumber for residential, commercial and industrial applications.^[4] It uses several species of wood in its products, including Douglas Fir, Western Hemlock, Western Red Cedar, Ponderosa pine, Lodgepole pine and Southern Yellow Pine. It markets European Spruce and Red Pine lumber through a sales agreement with Ilim Timber.^[5]

Interfor has sawmills in British Columbia (BC), Washington, Oregon, Georgia, South Carolina, and Arkansas.^[6] Two sawmills in the Kootenay region (Grand Forks and Castlegar); and one sawmill in the Southern Interior region near Kamloops (Adams Lake).

In the US Pacific Northwest, the company operates two sawmills in Washington state (Port Angeles and Longview) and two in Oregon (Molalla and Philomath). It operates the Cedarprime remanufacturing plant in Sumas, Washington.

In the US Southeast, the company operates seven sawmills in Georgia (Baxley, Eatonton, Meldrim, Perry, Preston, Swainsboro, and Thomaston), two in South Carolina (Georgetown and Summerville), one in Arkansas (Monticello), one in Alabama (Fayette), one in Mississippi (Bay Springs), and one in Louisiana (DeQuincy).

Interfor's woodlands and manufacturing operations have been independently certified to internationally recognized standards.^[7]

Old growth logging edit

In British Columbia's Great Bear Rainforest, Interfor is known to log the oldest and rarest cedar trees.^[8]

Manufacturing edit

All of Interfor's BC sawmills are Chain-of-Custody (CoC) certified. Chain-of-Custody (CoC) certification tracks logs from harvest through the manufacturing process. In BC, Interfor mills are independently certified to meet Program for Endorsement of Forest Certification (PEFC) and Sustainable Forestry Initiative (SFI) CoC certification requirements. Select Interfor mills meet Forest Stewardship Council® (FSC) CoC certification requirements. Interfor's Preston and Perry Mills in the United States are certified to the SFI fiber sourcing requirements.^[9]

2009 - Interfor was awarded an SFI Inc. Conservation Leadership Award for collaborative work with First Nations to ensure there is a suitable supply of monumental cedar trees to meet long-term cultural needs on British Columbia's Pacific Coast.^[10]

2007 - Interfor was a co-recipient of the World Wildlife Fund – Gift to the Earth Award to acknowledge collaborative work that led to the landmark agreements to conserve temperate rainforests in British Columbia's north and central coast regions.^[11]

Interfor has grown by more than 500% since 2002^[12] and is one of the largest lumber companies in the world.