How to Install HIDfast Hidden Deck Fasteners

Required Tools and Materials

• HIDfast pneumatic decking gun and hammer tool
• Correct HIDfast fastener model for the board (175-count box)
• Grooved-board attachment (required for pre-grooved decking)
• Air compressor, hose and fittings sized to the tool's requirements
• Pneumatic tool oil
• Safety glasses and hearing protection
• Framing square, tape measure, chalk line

Personal Protective Equipment

Pre-Installation Checks

1. 1Confirm framing is square, joists are on consistent spacing, and framing is structurally sound.
2. 2Confirm the decking product, thickness and profile, and that HIDfast is approved for it.
3. 3Confirm the selected fastener length and gap match the board and required spacing.
4. 4Verify the compressor, hose and fittings meet the tool's air-supply requirements.
5. 5Inspect the tool, fasteners and (if used) grooved-board attachment for damage.

Deck Framing and Board Preparation

Square framing and consistent joist spacing are essential — the system fastens at each joist, so joist layout drives fastener count and alignment. Prep boards to length, sort for defects, and stage them so installation flows without stopping.

Selecting the Correct HIDfast Fastener

Match the fastener to the board thickness and the required gap. Review the model comparison if unsure, and confirm compatibility for the exact decking product.

Setting Up the Pneumatic Tool

1. 1Add a few drops of pneumatic tool oil to the air inlet.
2. 2Connect the air hose and confirm pressure is within the tool's specified range.
3. 3Cycle the tool once into a safe direction to confirm it fires cleanly.
4. 4If using pre-grooved boards, install the grooved-board attachment and confirm height registration off the joist.

Loading Collated Fasteners

Disconnect the air supply before loading. Load the collated strip per the tool's instructions, confirm the feed pawl engages, and reconnect air. Use only the correct HIDfast fastener model — the wrong collation can cause jams or misfires.

Positioning the Tool Correctly

Seat the tool against the board edge and joist so the fastener enters at the designed angle and depth. Consistent positioning is what produces consistent depth and spacing. The tool sets the board gap automatically through the fastener's gap dimension.

Driving the Fasteners

1. 1Position the tool firmly against the board and joist.
2. 2Fire once per board per joist.
3. 3Advance to the next joist and repeat.
4. 4Visually confirm each fastener is driven to the correct depth and the board is pulled snug to the joist.

Maintaining Consistent Board Spacing

The fastener gap sets board spacing, but board bow, crown and temperature can affect it. Push boards snug before fastening and check spacing periodically with a gap gauge.

First and Final Boards

The first board establishes alignment — take time to set it straight and square. The final board and any board against a wall or obstacle may need a different approach because the tool may not fit; plan the last few boards before you reach them.

Perimeter, Stairs and Obstacles

Perimeter boards, stair treads, posts and skirting often require face fastening or alternate fastening where the tool cannot reach. Plan transitions and use matching corrosion-resistant face fasteners where needed.

Final Quality-Control Checklist

Common Installation Mistakes

• Using the wrong fastener model for the board
• Incorrect air pressure causing inconsistent depth
• Poor tool positioning causing angled or proud fasteners
• Skipping the grooved-board attachment on pre-grooved decking
• Forcing a jammed tool instead of stopping to clear it safely

When to Stop and Consult

Stop if the tool jams repeatedly, fires inconsistently, or drives fasteners to inconsistent depth. Consult the manufacturer's documentation or request service. Continuing to force a malfunctioning tool risks injury and damage. For tools and hidden deck fasteners, review the HIDfast tools and hidden deck fasteners page.

Printable Project Checklist