The standard option is hot dipped galvanized nails which provide more corrosion resistance than electro galvanized or hot galvanized materials.
Best nails for pressure treated lumber.
Perhaps the usage of screws nails or dowels with wood glue or thicker adhesive recommended for pressure treated lumber would result in a better bond.
But stainless steel fasteners can cost five to 10 times more than similar galvanized fasteners.
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Cedar and redwood fences.
The manufacturers of acq ca acza and cca and the treated wood industry are all recommending hot dipped galvanized nails and stainless steel nails and screws with their treated wood products.
For screws we recommend using ones that have a protective coating that is designed for use with pressure treated lumber.
For projects and constructions that will be outdoors or exposed to chemicals found in pressure treated wood hot dipped galvanized nails should be used instead.
Look for the code g185 on the hardware packaging for your nails.
Corrosion resistant stainless steel screws nails and bolts in grades 304 and 305 can be used for copper treated wood in most areas while grade 316 should be used in coastal areas.
Many pressure treated lumber manufacturers recommend using only stainless steel or hot dipped galvanized nails screws bolts anchors and connectors when working with the material.
The wood treatment industry recognizes the corrosive nature of acq in relation to fastening systems and recommends hot dipped galvanized or stainless steel nails be used.
For most applications however best nails for pressure treated lumber are either hot dipped galvanized nails and bolts.
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The most reliable material for pressure treated wood is stainless steel.
If it isn t kiln dried before and after treatment then you can expect warping and shrinking making face gluing as a sole means of adhering the two boards not optimal.
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Furthermore they specify that the fasteners meet the astm a 153 specification for hot dipped galvanizing.