Cornerboards
One-piece cellular PVC profiles for outside corners. Choose the face width and finish that complement the siding and the scale of the home.
Architectural inspiration; shown to illustrate exterior detailing.
One profile. Both faces.
Novex Cornerboards combine both faces in one profile, bringing a consistent edge to the transition between siding elevations.
Compare face widths, lengths and finishes before choosing the profile for a wall corner, bay or dormer.
- One-piece outside corner profile
- Smooth outer edges
- One profile for both faces of the corner
- Cellular PVC for exterior trim applications
- Matte-white finish with selected woodgrain options
- Same look and feel as Novex Trim
- Outside wall corners
- Bays & bump-outs
- Dormers
- Garages & outbuildings
Sizes & availability.
One-piece Cornerboards
5/4 · 1″ thick| Nominal | Actual | 10′ | 20′ | Finish |
|---|---|---|---|---|
| 5/4 × 4″ × 4″ | 1″ × 3½″ × 3½″ | Smooth & Woodgrain | ||
| 5/4 × 6″ × 6″ | 1″ × 5½″ × 5½″ | Smooth & Woodgrain | ||
| 5/4 × 8″ × 8″ | 1″ × 7¼″ × 7¼″ | — | Smooth only |
Faces are measured on each side of the corner. The 8″ × 8″ profile is available in the smooth finish only.
Choose your finish.
Compare smooth and woodgrain finishes in matte white. Options vary by product and size; ask about samples before selecting.
Smooth
A smooth, semi-matte white surface for a clean exterior finish.
Woodgrain
An embossed woodgrain surface for a textured exterior finish.
Installation and care.
Request the current installation and care instructions for your product. Review dimensions, substrate, fasteners and finish requirements before work begins.
Before installation
Confirm the dimensions, substrate and application before work begins. Request the current installation instructions for your product, and review local building requirements with your installer.
Fastening and joints
Use the product's installation instructions to determine fasteners, spacing and joint details for the application. Ask our team for the relevant documentation before choosing a fastening system.
Choosing a finish
Compare the smooth and woodgrain options available for your chosen size. If you plan to paint, confirm the coating and color requirements in the product and paint manufacturer's guidance.
Care and maintenance
Follow the product's care instructions. Ask for guidance before using a cleaning chemical, abrasive tool or pressure washer on a finished surface.
Related products.
Start with the right materials.
Share your plans, dimensions or material list. Ask our team about product options, quantities, pricing and availability.