Decking Materials

Pressure Treated Lumber

Material Type: Pressure-treated

What You Need to Know: Pine preserved with chromated copper arsenate (CCA) has been phased out by the EPA. Alternative treatments use copper azole (CBA) or alkaline copper quatenary (ACQ).

Other Considerations: Lumber is more insect- and fungus-resistant when chemicals are forced into the pressure treated wood. Requires yearly maintenance.

Durability/Maintenance: Decks can last up to 30 years with diligent upkeep. Wash at least once a year using deck wash or a power washer, and finish with a preservative sealer.

Cost: $1.20-$2 per square foot, uninstalled. Prices vary by grade, region, and season.