Exterior Mounting Blocks
Available in Woodgrain and Smooth finishes, SturdiMount® exterior mounting blocks provide a durable, water-resistant mounting surface for lights, vents, electrical boxes, and other exterior fixtures. Made from maintenance-free cellular PVC with built-in water management, SturdiMount delivers a clean, professional finish that complements today's most popular siding materials.
Disclaimer: Colors shown online and in printed materials may vary from actual colors. Please review color fan decks or real product samples before making a final color selection.
About SturdiMount Exterior Mounting Blocks
Built for Today's Most Popular Siding Materials
SturdiMount® Exterior Mount Blocks provide a durable, finished mounting surface for exterior fixtures and accessories while helping protect against moisture intrusion. Available in both Smooth and Woodgrain finishes, SturdiMount is designed to complement today's most popular siding materials, including fiber cement, engineered wood, hardboard, cedar, composite siding, brick, stone, and stucco.
Crafted from tough cellular PVC and engineered for both new construction and remodeling projects, SturdiMount creates a cleaner, more professional-looking installation for lights, vents, electrical boxes, water spigots, and more. The new Woodgrain finish delivers the same trusted performance with a textured appearance designed to blend naturally with woodgrain siding profiles
Strength, Protection, and a Professional Finish
SturdiMount products are engineered to deliver long-lasting durability and dependable performance in demanding exterior applications.
- Available in both Smooth and Woodgrain finishes
- Pre-assembled design for easier installation
- Integrated water management system helps reduce the risk of moisture intrusion
- Durable cellular PVC construction for long-term performance
- Nail fin designed for incorporation into water-resistive barrier systems
- Built-in head flashing helps improve water diversion
- Won't split, crack, warp, or twist
- Resistant to chalking and fading
- Won't experience moisture cycling like wood products
- Creates a strong, stable mounting surface for exterior fixtures and accessories
- Compatible with new construction and retrofit applications
This combination of durability, water management, and finish options helps contractors achieve a cleaner, more seamless installation across a wide range of siding types.
Paintable to Match Your Project
SturdiMount products may be painted to coordinate with virtually any exterior color palette.
For best results, use a 100% acrylic exterior paint or a paint specifically formulated for cellular PVC and plastic surfaces. Always follow the paint manufacturer's recommendations for surface preparation, priming, and application.
Because SturdiMount is manufactured from cellular PVC, it resists moisture-related movement, helping paint maintain its appearance longer than many traditional wood-based alternatives.
New Woodgrain Finish for Realistic Texture
SturdiMount Woodgrain combines the strength and rigidity contractors trust with a realistic woodgrain texture designed to blend naturally with engineered wood, fiber cement, hardboard, and natural wood siding products. The result is a stronger mount with a more cohesive, professional-looking appearance that complements today's most popular siding styles.
Resource Library
Explore our library of educational resources—including product literature, installation guidelines, technical documents, and more—to help guide every stage of your project.
FAQs
SturdiMount blocks are specifically designed for use with fiber cement, engineered wood, real wood, cedar, and composite lap siding. Made from durable cellular PVC, they won’t chalk or fade over time. Their clean, finished appearance enhances curb appeal, while their rugged construction ensures compatibility with a variety of siding materials, offering beauty and long-term performance in one solution.
SturdiMount® blocks are now available in both Smooth and Woodgrain finishes. Both options provide the same heavy-duty strength, durability, cellular PVC construction, and integrated water management performance. The difference is appearance. The new Woodgrain finish features a realistic textured surface designed to blend naturally with engineered wood, fiber cement, hardboard, cedar, and other woodgrain siding products, helping create a cleaner, more seamless finished installation.
SturdiMount® blocks are manufactured from durable cellular PVC and are designed to resist splitting, cracking, warping, twisting, chalking, and fading. Unlike wood products, they do not experience moisture cycling, helping maintain long-term performance and appearance while providing a low-maintenance solution for exterior mounting applications.
Engineered for efficiency, SturdiMount blocks come pre-flashed and pre-assembled, helping crews install them in seconds. This design provides consistent job site quality, regardless of who’s doing the work. The built-in water management system helps protect against moisture intrusion, preserving the integrity of the exterior and reducing the risk of callbacks or repairs.
Yes. SturdiMount® blocks are designed for use in both new construction and retrofit applications. They create a strong, stable mounting surface for a variety of exterior fixtures and accessories, including light fixtures, electrical boxes, dryer vents, water spigots, and HVAC components. Their versatile design makes them compatible with a wide range of siding materials, helping contractors achieve a professional-looking installation across many project types.
