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.

Can galvanized nails be used on pressure treated wood?

For most applications, however, best nails for pressure treated lumber are either hot dipped galvanized nails and bolts. For screws we recommend using ones that have a protective coating that is designed for use with pressure treated lumber. one example would be Outlaw fasteners.

What else must be considered when using ACQ treated lumber?

However, ACQ treated lumber is more corrosive to metal, so the right fastener is key to a safe, long lasting deck, fence or other outdoor project. When nails are exposed to ACQ, a chemical reaction occurs, which accelerates the corrosion rate of the fastener.

When should you not use galvanized nails?

(The preservatives incorporate salts that react with the zinc.) Also, never use galvanized nails with copper flashing. In the presence of a little moisture, the two metals set up a battery-like galvanic reaction that corrodes the metals quickly.

What are hot dipped galvanized nails used for?

Hot-dip galvanized nails are appropriate for any kind of mild-to-corrosive environment and provide long-term corrosion protection. Electroplated (electro-galvanized) nails have a very thin zinc coating and are therefore appropriate for interior applications.

Do you need galvanized nails for treated wood?

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. Furthermore, they specify that the fasteners meet the ASTM A-153 specification for hot-dipped galvanizing.

Can I use galvanized screws in treated lumber?

The treated wood industry specifies or recommends stainless steel and hot-dip galvanized products for use with pressure treated wood.

Is ACQ pressure treated wood safe?

Is Pressure-Treated Wood Safe? Yes, pressure-treated wood is safe for use in everything from raised garden beds to children’s playhouses. Before 2003, pressure-treated lumber was often treated with chromated copper arsenate (CCA), a preservative containing some amount of poisonous arsenic.

Can you burn ACQ treated wood?

Waterborne preservatives are the common alternative to CCA for treating wood and are widely used in the building industry. The waterborne preservative ammoniacal copper quaternary, or ACQ, eliminates the arsenic but is still considered as a pesticide and cannot be burned.

What should I put between treated wood and metal?

To prevent treated lumber from attacking flashing and fasteners, you’ll need to make sure they’re made with a harder metal than copper. Hot-dip galvanized or triple-zinc coated metals are great options. And remember: Because of its lower copper content, CA-C is a more user-friendly treatment material.

Are all galvanized nails hot-dipped?

But “hot-galvanized” nails are not dipped and do not offer the same performance as do hot-dipped nails. Hot-galvanized nails are coated by sprinkling zinc chips on cold steel nails in a barrel, then rotating the hot barrel in a furnace to melt and distribute the zinc.

Is hot-dipped galvanized the same as exterior galvanized?

The key difference between galvanized and hot dip galvanized is that most galvanized materials have a smooth and sharp finishing, whereas hot sip galvanized structures have a rough finishing. Galvanization is a process of preventing metal surfaces from corrosion.

Are galvanized nails good for outdoor use?

Yes. Galvanized nails are mainly used outdoors (though they are used indoors as well) when protection is needed to make the nails resilient to rusting.

Are galvanized nails required for framing?

Interior framing nails have a vinyl coating to make them easier to drive. They are known as vinyl sinkers. When doing exterior framing, framers use galvanized nails, which are rust resistant. Framers have occasion to use nails of other sizes.

What type of nails should be used for outdoor use?

Nails intended for outdoor use are often galvanized or “hot-dipped” with a coating of zinc to improve their weather-resistance. ​Stainless steel is also used for outdoor applications, though stainless steel nails are considerably more expensive than zinc-plated nails.

Can you use zinc coated screws in pressure treated wood?

We do not recommend electro-galvanized screws (also called clear-zinc coated) for exterior applications. They will corrode quickly in contact with the elements. Mechanically galvanized screws are generally suitable for decks and other outdoor projects made of pressure-treated lumber.

Can galvanized steel be used with treated lumber?

Hot-dip galvanized or stainless steel fasteners, anchors and hardware are recommended by the Preservative Treated Wood Industry for use with treated wood.

Will pressure treated wood corrode metal?

ACQ treated lumber is reportedly more corrosive to steel and coated steel than CCA treated lumber 3. This has raised concerns regarding the corrosion of Structural Galvanized Steel Sheets typically used in bracketry or similar hardware, Architectural Steel Sheets used in roofing and siding product, and fasteners.

Can you put metal on treated wood?

Pressure treated wood does not work well with metal. The reaction to the chemicals in the wood and copper which is a dissimilar metal cause the metal to rust. It is recommended that you always use untreated pine or spruce stringers to attach the metal to.

Are stainless steel screws OK for treated lumber?

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.