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TimberTech Decking · Material Planning

Face-Fastening TimberTech Decking: Questions for Your Installer

When planning a TimberTech decking project, one of the key decisions affecting both aesthetics and performance is the fastening method. While hidden clip systems offer a seamless surface, face-fastening provides a robust connection directly through the board into the joist. This guide focuses on the considerations for face-fastening TimberTech decking, detailing approved screw types, pilot hole requirements, and plug systems to help you achieve a secure and visually appealing deck.

Understanding the specific requirements for face-fastening is crucial because TimberTech decking materials, whether capped composite or full PVC, behave differently than traditional wood. Using the correct fasteners and techniques helps maintain the board's integrity and ensures the longevity of your deck. This guide provides practical advice for project planners and installers, ensuring the right approach is taken from the outset.

TimberTech deck with light boards, outdoor seating and a black perimeter railing
TimberTech project reference; appearance varies by collection and finish.

Why Choose Face-Fastening for TimberTech Decking?

Face-fastening involves driving screws directly through the face of the deck board into the underlying joist. This method offers a strong mechanical connection, which can be advantageous in certain situations. For example, face-fastening is often recommended for the perimeter boards of a deck, for stair treads, or in areas where additional stability is desired. It can also be a practical choice for complex deck designs where hidden fasteners might be difficult to implement consistently.

While hidden fasteners provide a smooth, unblemished surface, face-fastening, when done correctly, can offer a distinct visual appeal, especially when using color-matched or contrasting fasteners and plugs. It also allows for easier removal and replacement of individual boards if needed in the future, compared to some hidden fastening systems. The key is to select the right components and follow manufacturer guidelines precisely.

Approved Fasteners for TimberTech Decking

TimberTech decking requires specific fasteners designed to work with its capped composite and PVC materials. Generic deck screws may not provide adequate hold, can cause mushrooming, or may not be compatible with the material's expansion and contraction properties. It is essential to use only approved fasteners.

For face-fastening, TimberTech typically recommends specific screw and plug systems. These systems are engineered to create a clean, finished look while providing a strong, lasting connection. The screws are often made from corrosion-resistant materials and feature specific thread patterns and head designs to prevent damage to the decking material. Always consult the most current TimberTech installation guide for the exact screw specifications for your chosen product line (Azek, Pro, or Edge).

The Importance of Pilot Holes

Drilling pilot holes is a critical step when face-fastening TimberTech decking, especially for PVC boards like TimberTech Azek. Pilot holes prevent splitting or cracking of the decking material, particularly near board ends or edges. They also help ensure the screw drives in cleanly and sits flush with the surface, or allows for proper countersinking if using a plug system.

The size of the pilot hole is crucial and will vary depending on the specific screw and decking material. Too small a pilot hole can still lead to cracking, while too large a hole can compromise the screw's holding power. For plug systems, the pilot hole often includes a countersink feature to accommodate the screw head and the plug itself. Always refer to the fastener manufacturer's instructions for the precise pilot hole diameter and depth.

Integrating Plug Systems for a Finished Look

To achieve a more refined appearance with face-fastened TimberTech decking, plug systems are widely used. These systems typically involve screws with a specific drive head that allows a matching plug made from the same decking material to be inserted over the screw head, effectively concealing it. This creates a nearly invisible fastener, blending seamlessly with the board's surface and grain.

Plug systems usually come with a specialized driver bit that countersinks the screw to the correct depth, creating a cavity for the plug. The plugs are then glued into place, providing a durable and aesthetic finish. When planning your project, account for the additional time and precision required for plug installation. This method offers the strength of face-fastening with the clean look often associated with hidden fasteners.

Worked Example: Face-Fastening a Small Deck Section

For this section, you decide to face-fasten for maximum stability and a uniform appearance with plugs.

First, you'll need to calculate the number of boards. A 4-foot width translates to approximately 48 inches / 5.5 inches per board = 8.7 boards. You would purchase 9 full boards. For the 10-foot length, you'll use 10-foot boards. Each board will cross multiple joists.

You would need to purchase a screw and plug kit designed for TimberTech Azek Vintage Collection, ensuring the color matches. The installation would involve pre-drilling pilot holes with the specialized countersinking bit, driving the screws, and then inserting and gluing the color-matched plugs. Always follow the specific instructions provided with the chosen fastener and plug system for exact pilot hole depth and plug adhesive application.

Before you order

  • Identify the specific TimberTech decking line (Azek, Pro, or Edge) to be used.
  • Confirm the manufacturer's approved face-fastening screws and plug systems for that line.
  • Determine if pilot holes are required for your chosen product and fastener, and note the precise drill bit size.
  • Decide on the aesthetic: visible screw heads or concealed with plugs.
  • Calculate the quantity of screws and plugs needed based on board width, joist spacing, and project dimensions.
  • Review the latest TimberTech installation guide for any updates on face-fastening techniques or product compatibility.
  • Consider the impact of face-fastening on warranty terms, if any.

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

Can I use any deck screw for face-fastening TimberTech decking?

No, it is crucial to use only TimberTech-approved face-fastening screws and systems. Generic screws may not be compatible with the material composition, can cause damage like splitting or mushrooming, and may not provide the necessary long-term hold or corrosion resistance. Always refer to the specific product's installation guide for approved fasteners.

Are pilot holes always necessary when face-fastening TimberTech decking?

While some composite materials may allow for self-tapping screws without pilot holes, it is generally recommended, and often required, to drill pilot holes when face-fastening TimberTech decking, especially for PVC lines like Azek. Pilot holes prevent material damage and ensure a clean, secure installation. Always check the specific fastener instructions and TimberTech installation guide for your product.

How do I ensure the face-fasteners blend in with the deck boards?

To achieve a seamless look, use a color-matched screw and plug system specifically designed for TimberTech decking. These systems provide plugs made from the same material as your deck boards, which are inserted over the countersunk screw heads. This conceals the fasteners, creating a clean and uniform surface appearance.

Request a Material Quote for Your TimberTech Decking Project

Ready to plan your deck? Contact us with your project dimensions, desired TimberTech profile, and ZIP code to get a material quote. We can confirm current availability and service options for your face-fastening needs.

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