Japanese Cedar (Sugi) [1 Inch] [T&G]

Japanese Cedar (Sugi) tongue-and-groove boards are the go-to for any project that needs a tight, clean surface and natural durability — indoors or out. The interlocking profile installs fast and stays beautiful for decades.

Reversible profile — two looks, one board

Each board is milled with a flush face on one side and a V-groove face on the other. Install flush for a modern, seamless wall; flip it for the classic V-groove shadow line. 

Best for

• Sauna walls and ceilings (low resin, handles heat and humidity without off-gassing)
• Exterior siding and cladding (naturally rot- and insect-resistant, no treatment needed)
• Raised planter boxes and garden beds (safe for edible gardens, holds up to constant moisture)
• Interior feature walls, porch ceilings, and soffits
• Cabin and cottage interiors

Sugi's natural oils make it one of the most durable softwoods available — resistant to rot, moisture, and insects without any chemical treatment. The fine aromatic grain and warm tone look as good on the outside of a house as they do lining a sauna. Available in 1×4, 1×6, and 1×8 profiles, 6 to 12 feet.

Buying from William's Cedar

Free pickup at our Surrey yard (4748 152 St). Inspect every board before you load — hand back anything you don't love, no questions, no fees. Need delivery across BC? Text 778-322-4587 for a freight quote. Speccing a sauna, siding project, or planter build? Book a free 15-minute consultation.