This 50-pack of specialist screws is the primary fixing solution for securing Sunlite Two-Part Joiner Bases or SUNGLAZE Bases to timber rafters and purlins.

The defining characteristic of this fastener is its wafer head design. When installing the base tracks for two-part glazing systems, it is essential that the screw head does not protrude. A bulky screw head can prevent the polycarbonate sheets from seating correctly or obstruct the top cap from snapping into place. The wide, flat “wafer” profile of this screw provides a massive clamping surface to hold the aluminium or plastic base firmly against the timber, while remaining slim enough to allow for an interference-free assembly of the upper components.

Each screw is finished with a Class 3 (C3) galvanised coating, specifically tested for the British climate. This provides robust protection against corrosion in urban and industrial environments, ensuring that the structural integrity of your roof is not compromised by rust. At 35mm in length, these 10-gauge screws provide the ideal balance of deep timber penetration and lateral strength required for residential carports, gazebos, and pergolas.

Key Features and Benefits

Ultra-Flush Wafer Head: Distributes load over a wider area without the bulk, ensuring top caps and sheets fit perfectly.
C3 Weather Protection: High-performance coating prevents premature rusting in outdoor applications.
Timber-Specific Thread: Designed to bite into pressure-treated softwoods and construction-grade hardwoods without stripping.
Interference-Free Glazing: Eliminates “pivot points” or bumps under the sheets, which is critical for maintaining a watertight seal.
High Pull-out Resistance: The 35mm length ensures a secure anchor point into the structural timber below.