HIDfast for Hardwood, Cedar and Pressure-Treated Decking
HIDfast can fasten many wood decks, but each wood species behaves differently. This guide covers hardwood, cedar and pressure-treated lumber separately so you can ask the right questions. It does not make universal claims about every species or treatment formula — verify current product, decking, preservative and local building requirements before installing.
Hardwood Decking
Material movement and density
Hardwoods are dense and move with moisture changes. Dense species can resist fastener entry and may require predrilling.
Moisture and board selection
Select boards with appropriate moisture content and acclimation per the supplier. Wet hardwood shrinks; dry hardwood is harder to fasten.
Fastener selection and corrosion resistance
HIDfast 304 stainless fasteners resist corrosion in hardwood. Choose the length and gap for the board thickness and required spacing.
Splitting and test installation
Hardwoods can split if fasteners are driven without the correct setup or predrilling. Run a test board and inspect before full installation.
Spacing, ventilation and inspection
Follow the supplier's spacing and ventilation requirements. Inspect the deck periodically for fastener seating and board movement.
Cedar Decking
Material movement and density
Cedar is softer and more dimensionally stable than hardwood but still moves with moisture. It is generally forgiving for edge fastening.
Moisture and board selection
Select clear, straight boards. Acclimate cedar to jobsite moisture before installation where recommended.
Fastener selection and corrosion resistance
Cedar's tannins can stain non-stainless fasteners. HIDfast 304 stainless fasteners avoid black staining around fasteners.
Splitting and test installation
Cedar splits less than hardwood but board ends can check. Test-install a board to confirm spacing and seating.
Spacing, ventilation and inspection
Follow the supplier's spacing for seasonal movement and ensure underside ventilation. Inspect periodically.
Pressure-Treated Lumber
Material movement and density
Treated lumber is denser and wetter when new and shrinks as it dries. Movement is significant — spacing matters.
Moisture and preservative chemistry
Modern preservatives (ACQ, copper azole) are corrosive to non-stainless fasteners. HIDfast 304 stainless fasteners resist this corrosion.
Fastener selection and corrosion resistance
Use stainless HIDfast fasteners. Confirm the board thickness and required gap to select the model.
Splitting and test installation
Wet treated lumber can split at fasteners if driven near ends or with the wrong setup. Test a board and inspect.
Spacing, ventilation, code and inspection
Follow the treatment supplier's spacing and the local building code. Ventilate the underside and inspect for movement as the lumber dries.
General Wood-Deck Guidance
Verify before you build
For HIDfast hidden fasteners for wood decking, see the HIDfast hidden fasteners for wood decking page, and confirm the correct fastener model for your board.
Frequently Asked Questions
Can HIDfast be used on hardwood decks?
HIDfast can fasten some hardwoods with the correct fastener and setup, but dense species may require predrilling. Test a board first and confirm the species' requirements.
Are HIDfast fasteners stainless enough for treated lumber?
HIDfast fasteners are 304 stainless, which resists corrosion from modern treated-lumber preservatives. Confirm the fastener model for the board thickness and gap.
Will cedar stain around HIDfast fasteners?
Cedar tannins can stain non-stainless fasteners. HIDfast 304 stainless fasteners avoid that staining.
Do I need to predrill hardwood for HIDfast?
Possibly, depending on species density. Test a board; if the tool cannot seat fasteners cleanly or the board splits, follow the species' predrilling guidance.
What spacing should I use for wood decks?
Follow the board supplier's spacing and the local building code. Treated lumber shrinks as it dries, so spacing and ventilation matter.
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