Planning Cut Ends and Field Cuts with NewTechWood Outdoor Surfaces

Understanding NewTechWood Material and Cut Edges

NewTechWood products are wood-plastic composites, engineered for low-maintenance exterior surfaces. This composition means that the material behaves differently from solid wood when cut. While solid wood may be sealed or stained on cut ends, composite materials often require a different approach to maintain their aesthetic and protect the internal structure from environmental factors.

The exposed core of a composite plank, revealed by a field cut, can have a different appearance than the finished surface. Therefore, decisions about how to conceal or finish these cuts are integral to the design and longevity of the installation.

The Importance of Planned Cuts and Finishes

Every project involving linear materials like NewTechWood will inevitably have cuts. These can be factory-aligned ends, or field cuts made on site to fit specific dimensions or around architectural features.

Planning for these cuts involves more than just measuring. It includes deciding how the cut edges will be concealed, trimmed, or otherwise treated to integrate seamlessly into the design. Unfinished cut ends, particularly in visible areas, can detract from the intended aesthetic of a wood-look composite surface. Proper planning ensures a consistent and professional appearance across the entire project.

Options for Finishing Cut Ends

Several strategies can be employed to manage cut ends and field cuts with NewTechWood Outdoor Surfaces:

Trim Pieces: The most common and recommended method is to use coordinating trim pieces. NewTechWood systems often include various trim profiles such as corner trims, starter strips, and end caps that are designed to conceal exposed cut edges. These trims provide a clean, finished look and help protect the composite core.

Mitered Corners: For outside corners, mitering the planks at 45 degrees can create a visually continuous joint. While this method conceals the cut end from the face, it still exposes the cut edge along the mitered seam. This approach requires precise cuts and alignment.

Butt Joints with Flashing: In certain applications, particularly for vertical siding, a butt joint might be used where a plank meets a vertical trim or another architectural element. In such cases, proper flashing or a backing material behind the joint is crucial to manage water and maintain the integrity of the wall assembly.

Concealed Locations: Where possible, design the layout so that cut ends fall into less visible areas, such as behind other architectural features, under eaves, or at the base of a wall where they are covered by ground-level landscaping or flashing. This minimizes the need for elaborate finishing of every single cut.

Worked Example: Cladding a Feature Wall with NewTechWood

Consider a hypothetical feature wall, 10 feet wide and 8 feet tall, to be clad horizontally with NewTechWood composite profiles. Assume the profiles are 6 inches wide and come in standard 16-foot lengths.

1. Material Calculation: The 8-foot height requires 16 courses (8 feet / 0.5 feet per course = 16 courses). Each course is 10 feet long. If using 16-foot planks, you can get one 10-foot section and one 6-foot offcut from each plank. The 6-foot offcut is usable for other parts of the project or for starting subsequent courses if a staggered pattern is desired. For a 10-foot width, you will need 10 linear feet per course.

2. End Treatment Strategy: For this example, let's assume the wall has inside corners where the NewTechWood meets an adjacent wall, and outside corners where it turns a corner. For the inside corners, the NewTechWood planks will butt into the perpendicular wall, and the cut ends will be covered by a coordinating trim piece or caulk line. For the outside corner, a NewTechWood outside corner trim piece will be used. This trim covers both cut ends of the planks meeting at the corner.

3. Field Cuts: For the 10-foot width, each 16-foot plank will be cut to 10 feet. This results in a 6-foot offcut. These offcuts can be utilized to start other courses, minimizing waste, especially if a staggered installation pattern is chosen. For example, if you start one course with a 10-foot piece, the next course could start with a 6-foot piece (from the offcut) and then a 4-foot piece (cut from a new plank or another offcut) to complete the 10-foot length, followed by another 6-foot piece.

4. Waste Management: By carefully planning the sequence of cuts and utilizing offcuts, you can optimize material usage. Always factor in a percentage for waste (typically 5-10%) when ordering, especially for complex layouts or when precise cuts are critical.

Tools and Techniques for Clean Cuts

Achieving clean, precise cuts is vital for a professional finish, regardless of whether the cut end will be concealed or exposed:

Saw Blades: Use a sharp, fine-tooth carbide-tipped saw blade designed for composite materials or non-ferrous metals. A dull blade can cause chipping, fraying, or melting of the composite material.

Support: Ensure the NewTechWood plank is fully supported during cutting to prevent vibration and splintering. Use sawhorses or a stable workbench.

Safety: Always wear appropriate personal protective equipment, including safety glasses, hearing protection, and gloves.

Test Cuts: If possible, make a test cut on a scrap piece of material to fine-tune your saw settings and technique before cutting primary planks.

Planning for Coastal and Winter Climates

In coastal environments, moisture and salt exposure can be a concern. While NewTechWood is designed for exterior use, ensuring all cut ends are properly sealed or covered with trim pieces helps prevent moisture ingress into the composite core. This is particularly important where driving rain or sea spray is prevalent.

For winter climates, freeze-thaw cycles can put stress on materials. Well-executed trim details and proper installation methods that allow for drainage and prevent water trapping are crucial. Exposed, unfinished cut ends could potentially be more susceptible to moisture-related issues over time in these conditions. Confirming the specific NewTechWood product line's suitability for extreme conditions with your Lumber Plus representative is advisable.

Before you order

• Identify all locations where planks will be cut.
• Determine if cut ends will be exposed or concealed.
• Select appropriate trim pieces (corner trims, end caps) for exposed cuts.
• Plan cutting sequences to maximize material utilization and minimize waste.
• Ensure you have the correct saw blades and tools for clean cuts.
• Consider climate-specific challenges (e.g., coastal moisture, freeze-thaw) and how end treatments address them.
• Verify the availability of coordinating trim pieces with your Lumber Plus representative.
• Factor in a waste percentage for your material order.

Confirm installation details, approved uses and warranty terms in the current instructions for the exact product and profile. Your installer should verify the substrate, structure and applicable project requirements.

Questions to help you decide

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