5/4x6 Accoya Tongue & Groove boards combine the natural beauty of real wood with outstanding durability and long-term stability for exterior and interior applications. Designed for covered porches, ceilings, soffits, screened-in patios, and cladding projects, the tongue and groove profile creates a clean, seamless appearance with hidden fastening for a polished finished look.

Accoya wood is engineered to resist swelling, shrinking, rot, and insect damage, making it an excellent choice for humid climates, coastal environments, and low-maintenance outdoor living spaces. Its exceptional stability helps boards stay flatter and more consistent over time compared to many traditional wood products.

Features & Benefits

• Outstanding dimensional stability
• Resistant to rot, decay, and insects
• Performs exceptionally well in humid and coastal climates
• Smooth tongue and groove profile for a refined appearance
• Minimal shrinking, swelling, and warping
• Ideal for paint, stain, or natural weathering
• Sustainably sourced modified wood
• Built for long-lasting, low-maintenance performance

Common Applications

• Covered porch flooring
• Screened-in porches
• Exterior ceilings
• Soffits
• Interior accent walls
• Exterior cladding
• Balconies
• Outdoor living spaces

Available in multiple fixed lengths, random length options, and sample sizes to help accommodate projects of all sizes.