The Simpson Quik Drive QDPROLDHG2 Underlayment Backerboard Attachment is a professional-grade auto-feed screw driving attachment engineered by Simpson for fastening cement board and fiber-cement board underlayment and backerboard to wood or steel substrates. Built on extensive research into fastener performance demands and real-world installation workflows, this attachment transforms repetitive fastening tasks into a streamlined, efficient process - helping crews maintain consistent quality while saving measurable time on the job.

Key Features

• Available alone or as part of the PROLDHG2 underlayment/backerboard system - gives you the flexibility to match your existing setup or build out a complete system, depending on your project needs.
• Slim profile allows driving in corners - lets you fasten in tight, confined spaces without sacrificing speed or consistency, reducing the need for awkward workarounds.
• Drives fasteners that meet ANSI standards - ensures every installation meets recognized performance benchmarks, supporting code-compliant work on professional jobsites.
• Compact body for reduced weight and easy handling - minimizes fatigue during extended use, keeping productivity high across long installation runs.

Why This Product

• Purpose-built for cement board and fiber-cement applications - this attachment is specifically designed for underlayment and backerboard fastening to wood or steel, so you get a tool matched precisely to the demands of these installations rather than a general-purpose compromise.
• Engineered to reduce installation fatigue - the compact, lightweight body combined with auto-feed screw driving technology means fewer interruptions and less physical strain during the repetitive fastening work that cement board and fiber-cement projects demand.
• Slim-profile design opens up difficult installation areas - the ability to drive fasteners in corners addresses one of the most common bottlenecks in backerboard installation, keeping your work moving without stopping to switch tools.
• Flexible purchasing options suit a range of project scales - whether you need just the attachment or the full PROLDHG2 underlayment/backerboard system, this product adapts to what your workflow actually requires.

Specifications

• Manufacturer: Simpson Strong-Tie
• MPN: QDPROLDHG2
• Material: Combination
• Country of Origin: United States
• Compatible Fasteners: Drives 1-1/4 in. to 2 in. Simpson-Strong-Tie collated CB3BLG and CB3BLGHL screws

Approved Applications

• Fastening Wood-to-Wood
• Fastening cement board and fiber-cement board underlayment/backerboard to wood or steel

Frequently Asked Questions

What types of material can the QDPROLDHG2 attachment fasten?

The QDPROLDHG2 is ideal for fastening cement board and fiber-cement board underlayment/backerboard to wood or steel substrates.

What screws are compatible with the QDPROLDHG2 attachment?

This attachment drives 1-1/4 in. to 2 in. Simpson Strong-Tie collated CB3BLG and CB3BLGHL screws.

Can the QDPROLDHG2 be used in tight spaces such as corners?

Yes. The slim profile of the QDPROLDHG2 is specifically designed to allow driving fasteners in corners where space is limited.

Is the QDPROLDHG2 available as part of a larger system?

Yes. The QDPROLDHG2 attachment is available alone or as part of the PROLDHG2 underlayment/backerboard system, offering flexibility depending on your project needs.