How to Install Accoya® High-Performance Wood Siding
Get a step-by-step installation guide tailored to your Accoya® siding project.
Where will the siding be installed?
Application Location
Exterior
Outdoor installation on building exterior
Interior
Indoor wall covering or accent
Complete Accoya Siding Installation Guide
Accoya is a popular choice for siding applications, valued for its natural beauty and durability. With a Janka hardness of 1,100 lbf and density of 32 lbs/ft³, it offers good performance for residential and commercial projects. Proper installation is essential to maximize the 50+ years expected lifespan.
Janka Hardness
1,100 lbf
Density
32 lbs/ft³
Expected Lifespan
50+ years
Origin
New Zealand (modified)
Step 1: Acclimation & Storage
Stack Accoya siding boards with spacers for 3-7 days on-site. Keep covered but ventilated.
Step 2: Wall Preparation
Install weather-resistant barrier (WRB) with 6" overlaps. Flash all windows, doors, and penetrations. Install drip edges and starter strips. Consider a rainscreen air gap for premium performance.
Step 3: Board Layout & Starter Course
Establish a level baseline. Calculate course spacing and exposure. Snap chalk lines for each course. Install first course starting at bottom with minimum 6-8" clearance above grade.
Step 4: Fastening
Use stainless steel nails or screws for maximum corrosion resistance. Ring-shank nails provide excellent hold. Pre-drill near board ends to prevent splitting. Never nail through overlapping sections.
Step 5: Cutting & End-Sealing
Cut with a sharp carbide blade. Seal all cut ends and back-prime boards before installation for best results. Apply end-grain sealer to exposed end grain.
Step 6: Finishing
Accoya siding can be painted, stained, or left to weather naturally depending on the desired look. High-quality exterior coatings will last longer on properly prepared wood.
Step 7: Ongoing Maintenance
Inspect annually for damage. Clean 1-2 times per year. Maintain caulk and flashing. Refinish or repaint according to your chosen coating system's schedule.
Required Tools
- Circular or miter saw
- Nail gun or hammer
- Drill
- Level
- Caulk gun
Materials Needed
- Accoya siding boards
- Stainless steel nails/screws
- Weather-resistant barrier
- Flashing
- End grain sealer