How to Choose the Right Pressure Treated Deck Boards

Building or replacing a deck can be an exciting project. But choosing the right materials is key to ensuring your deck will stand the test of time and look great for years to come. Pressure treated deck boards are a popular choice thanks to their durability, affordability, and natural wood appearance.

But not all pressure treated deck boards are created equal. The type of wood, level of chemical treatment, cost, aesthetic, and performance can vary. Here's what you need to know to select the best option for your deck build or refresh.

Common Wood Types Used for Pressure Treated Deck Boards

Pressure treated wood utilizes chemical preservatives to help resist rot, decay, and insect damage. The four most common types of wood used for residential deck boards are:

Southern Yellow Pine

Southern yellow pine refers to several pine species native to the southern United States. It offers a blend of strength, affordability, and aesthetics. The wood has a mix of yellow and brown heartwood with a straight grain pattern. Pine is a softwood that needs pressure treating since it has low natural decay and insect resistance.

Pine is the most widely available and economical choice for decking. It can be used in longer lengths up to 20 feet. Pine does contain knots and is moderately durable. It requires more frequent staining or sealing than heartwoods like cedar and redwood.

Redwood

Redwood comes from the coast redwood tree native to California. It is valued for its beauty and natural decay resistance. This softwood has a distinctive reddish-pink hue and straight grain. Redwood is moderately priced but doesn't require as much maintenance as non-resistant woods once treated.

Redwood contains tannins that help protect against insects and moisture. It has good dimensional stability so it resists checking, cupping, and warping. Redwood is a great option for coastal climates thanks to its water resistance. It can be used in boards up to 24 feet long.

Western Red Cedar

Western red cedar comes from the giant arborvitae tree in the Pacific Northwest. It is cherished for its natural weather-resistance and attractive grain patterns. This aromatic softwood has a reddish-brown tone. It's lightweight yet strong.

Cedar is naturally decay-resistant but pressure treating enhances that. It has oils that act as natural pesticides. Cedar is easy to stain which allows customizing the look. It does require more frequent staining than redwood. It can span up to 18 feet in length without support.

Composite Decking

Composite deck boards blend recycled plastic, wood fibers, and bonding agents to create a unique decking material. The result is a durable, splinter-free board that looks like natural wood but requires less maintenance.

Composites resist moisture, fading, and pests thanks to their synthetic composition. But they can get hot underfoot in direct sunlight. Composite boards span a maximum of 12 to 16 feet unsupported. They are more expensive than wood upfront but have a longer lifespan.

Benefits of Choosing Pressure Treated Deck Boards

Why choose pressure treated decking over exotic hardwoods or alternatives? Here are some of the key advantages:

• Resists rot, decay, and insect damage thanks to chemical preservatives
• Cost effective compared to hardwoods like ipe or tigerwood
• Easy for DIY installation with common tools
• Available in a variety of wood species to suit your aesthetic
• Can be easily painted, stained, or left natural
• Sustainably sourced wood from managed forests
• Can span longer distances between supports
• Compatible with common deck fasteners and hardware

The pressure treatment process allows beautiful but non-durable woods to be used for decking projects. Treatment enhances the lifespan and weather-resistance of the wood, reducing long-term maintenance needs.

Key Considerations When Selecting Deck Boards

Keep the following factors in mind when evaluating pressure treated deck board options:

Appropriate Level of Chemical Treatment

Treatment levels indicate the expected end use conditions for the wood. Above ground (AG) is for decking elevated off the ground. Ground contact (GC) has extra preservative retention for wood touching soil.

Choose the right treatment level for your specific project. Don't over-treat, as the chemicals do have some environmental impacts. Opt for the least treatment suitable for proper performance.

Cost Per Linear or Square Foot

Pressure treated pine is typically the most affordable deck board option. Cedar and redwood cost moderately more. Composite decking is often 2-3 times the price but has lifespan advantages.

Calculate total installed cost, not just board cost. Labor will be similar for wood options. Compare to your budget and expected return on enjoyment.

Desired Visual Appeal

Redwood has a rich reddish-pink hue. Cedar weathers to an elegant silvery-gray patina. Pressure treated pine offers a mix of yellows and browns. Composites mimic wood looks. Choose a species aligned with your aesthetic.

Also consider grain patterns, knots, and color consistency. Some premium boards have tighter knot standards for a cleaner appearance.

Regional Climate Conditions

Wet, humid climates demand wood with extra moisture protection, such as pressure treated pine or cedar. Arid regions need UV resistance, where redwood excels. Select boards suited for your local environment.

Deck Traffic and Usage

Decks off kitchens or in high foot traffic areas need durable boards that resist scratching and pitting. For lower use, softer woods work. Factor in furniture, accessories, and wear when selecting boards.

How to Select the Best Pressure Treated Deck Boards

Follow these tips to choose ideal decking boards for your project:

Determine Your Budget Limit

Research material costs for different deck boards in the sizes you need. Get quotes for treated pine, cedar, redwood, and composite ranges. Labor costs will be comparable for any material. Compare to your total budget.

Evaluate Maintenance Requirements

Some wood decking needs frequent sealing, oiling, or staining. Composites require little routine maintenance. Consider long-term costs tradeoffs, not just upfront pricing.

Choose Wood Species and Visual Characteristics

Select a wood or composite that achieves the look you want. Also decide on board features like square edge or grooved. Grooved boards provide a cleaner, more consistent appearance.

Calculate Required Square Footage

Measure your exact deck dimensions and add 5-10% extra for material waste and errors. Multiply by the square footage per board to determine total boards needed. Order the right amount.

Pick Appropriate Level of Preservative Treatment

Choose the treatment level suitable for your situation - above ground or ground contact. Don't over-treat, as the chemicals have environmental impacts.

Buy quality boards from reputable manufacturers and distributors. Get guidance selecting the ideal boards for your specific project.

Choosing pressure treated decking requires research, planning, and careful decision-making. But the investment pays dividends for decades in an incredible, lasting outdoor living space you and your family will enjoy. Be sure to check local building codes before starting your deck project.